diff options
Diffstat (limited to 'tools/perf/util')
80 files changed, 10078 insertions, 4607 deletions
diff --git a/tools/perf/util/PERF-VERSION-GEN b/tools/perf/util/PERF-VERSION-GEN index 54552a00a117..97d76562a1a0 100755 --- a/tools/perf/util/PERF-VERSION-GEN +++ b/tools/perf/util/PERF-VERSION-GEN @@ -1,17 +1,17 @@ #!/bin/sh -GVF=PERF-VERSION-FILE -DEF_VER=v0.0.2.PERF +if [ $# -eq 1 ] ; then + OUTPUT=$1 +fi + +GVF=${OUTPUT}PERF-VERSION-FILE LF=' ' -# First see if there is a version file (included in release tarballs), -# then try git-describe, then default. -if test -f version -then - VN=$(cat version) || VN="$DEF_VER" -elif test -d .git -o -f .git && +# First check if there is a .git to get the version from git describe +# otherwise try to get the version from the kernel makefile +if test -d ../../.git -o -f ../../.git && VN=$(git describe --abbrev=4 HEAD 2>/dev/null) && case "$VN" in *$LF*) (exit 1) ;; @@ -23,7 +23,12 @@ elif test -d .git -o -f .git && then VN=$(echo "$VN" | sed -e 's/-/./g'); else - VN="$DEF_VER" + eval `grep '^VERSION\s*=' ../../Makefile|tr -d ' '` + eval `grep '^PATCHLEVEL\s*=' ../../Makefile|tr -d ' '` + eval `grep '^SUBLEVEL\s*=' ../../Makefile|tr -d ' '` + eval `grep '^EXTRAVERSION\s*=' ../../Makefile|tr -d ' '` + + VN="${VERSION}.${PATCHLEVEL}.${SUBLEVEL}${EXTRAVERSION}" fi VN=$(expr "$VN" : v*'\(.*\)') diff --git a/tools/perf/util/abspath.c b/tools/perf/util/abspath.c index a791dd467261..0e76affe9c36 100644 --- a/tools/perf/util/abspath.c +++ b/tools/perf/util/abspath.c @@ -1,86 +1,5 @@ #include "cache.h" -/* - * Do not use this for inspecting *tracked* content. When path is a - * symlink to a directory, we do not want to say it is a directory when - * dealing with tracked content in the working tree. - */ -static int is_directory(const char *path) -{ - struct stat st; - return (!stat(path, &st) && S_ISDIR(st.st_mode)); -} - -/* We allow "recursive" symbolic links. Only within reason, though. */ -#define MAXDEPTH 5 - -const char *make_absolute_path(const char *path) -{ - static char bufs[2][PATH_MAX + 1], *buf = bufs[0], *next_buf = bufs[1]; - char cwd[1024] = ""; - int buf_index = 1, len; - - int depth = MAXDEPTH; - char *last_elem = NULL; - struct stat st; - - if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX) - die ("Too long path: %.*s", 60, path); - - while (depth--) { - if (!is_directory(buf)) { - char *last_slash = strrchr(buf, '/'); - if (last_slash) { - *last_slash = '\0'; - last_elem = xstrdup(last_slash + 1); - } else { - last_elem = xstrdup(buf); - *buf = '\0'; - } - } - - if (*buf) { - if (!*cwd && !getcwd(cwd, sizeof(cwd))) - die ("Could not get current working directory"); - - if (chdir(buf)) - die ("Could not switch to '%s'", buf); - } - if (!getcwd(buf, PATH_MAX)) - die ("Could not get current working directory"); - - if (last_elem) { - len = strlen(buf); - - if (len + strlen(last_elem) + 2 > PATH_MAX) - die ("Too long path name: '%s/%s'", - buf, last_elem); - buf[len] = '/'; - strcpy(buf + len + 1, last_elem); - free(last_elem); - last_elem = NULL; - } - - if (!lstat(buf, &st) && S_ISLNK(st.st_mode)) { - len = readlink(buf, next_buf, PATH_MAX); - if (len < 0) - die ("Invalid symlink: %s", buf); - if (PATH_MAX <= len) - die("symbolic link too long: %s", buf); - next_buf[len] = '\0'; - buf = next_buf; - buf_index = 1 - buf_index; - next_buf = bufs[buf_index]; - } else - break; - } - - if (*cwd && chdir(cwd)) - die ("Could not change back to '%s'", cwd); - - return buf; -} - static const char *get_pwd_cwd(void) { static char cwd[PATH_MAX + 1]; diff --git a/tools/perf/util/bitmap.c b/tools/perf/util/bitmap.c new file mode 100644 index 000000000000..5e230acae1e9 --- /dev/null +++ b/tools/perf/util/bitmap.c @@ -0,0 +1,21 @@ +/* + * From lib/bitmap.c + * Helper functions for bitmap.h. + * + * This source code is licensed under the GNU General Public License, + * Version 2. See the file COPYING for more details. + */ +#include <linux/bitmap.h> + +int __bitmap_weight(const unsigned long *bitmap, int bits) +{ + int k, w = 0, lim = bits/BITS_PER_LONG; + + for (k = 0; k < lim; k++) + w += hweight_long(bitmap[k]); + + if (bits % BITS_PER_LONG) + w += hweight_long(bitmap[k] & BITMAP_LAST_WORD_MASK(bits)); + + return w; +} diff --git a/tools/perf/util/build-id.c b/tools/perf/util/build-id.c new file mode 100644 index 000000000000..70c5cf87d020 --- /dev/null +++ b/tools/perf/util/build-id.c @@ -0,0 +1,61 @@ +/* + * build-id.c + * + * build-id support + * + * Copyright (C) 2009, 2010 Red Hat Inc. + * Copyright (C) 2009, 2010 Arnaldo Carvalho de Melo <acme@redhat.com> + */ +#include "util.h" +#include <stdio.h> +#include "build-id.h" +#include "event.h" +#include "symbol.h" +#include <linux/kernel.h> + +static int build_id__mark_dso_hit(event_t *event, struct perf_session *session) +{ + struct addr_location al; + u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; + struct thread *thread = perf_session__findnew(session, event->ip.pid); + + if (thread == NULL) { + pr_err("problem processing %d event, skipping it.\n", + event->header.type); + return -1; + } + + thread__find_addr_map(thread, session, cpumode, MAP__FUNCTION, + event->ip.pid, event->ip.ip, &al); + + if (al.map != NULL) + al.map->dso->hit = 1; + + return 0; +} + +struct perf_event_ops build_id__mark_dso_hit_ops = { + .sample = build_id__mark_dso_hit, + .mmap = event__process_mmap, + .fork = event__process_task, +}; + +char *dso__build_id_filename(struct dso *self, char *bf, size_t size) +{ + char build_id_hex[BUILD_ID_SIZE * 2 + 1]; + const char *home; + + if (!self->has_build_id) + return NULL; + + build_id__sprintf(self->build_id, sizeof(self->build_id), build_id_hex); + home = getenv("HOME"); + if (bf == NULL) { + if (asprintf(&bf, "%s/%s/.build-id/%.2s/%s", home, + DEBUG_CACHE_DIR, build_id_hex, build_id_hex + 2) < 0) + return NULL; + } else + snprintf(bf, size, "%s/%s/.build-id/%.2s/%s", home, + DEBUG_CACHE_DIR, build_id_hex, build_id_hex + 2); + return bf; +} diff --git a/tools/perf/util/build-id.h b/tools/perf/util/build-id.h new file mode 100644 index 000000000000..5dafb00eaa06 --- /dev/null +++ b/tools/perf/util/build-id.h @@ -0,0 +1,10 @@ +#ifndef PERF_BUILD_ID_H_ +#define PERF_BUILD_ID_H_ 1 + +#include "session.h" + +extern struct perf_event_ops build_id__mark_dso_hit_ops; + +char *dso__build_id_filename(struct dso *self, char *bf, size_t size); + +#endif diff --git a/tools/perf/util/cache.h b/tools/perf/util/cache.h index 918eb376abe3..65fe664fddf6 100644 --- a/tools/perf/util/cache.h +++ b/tools/perf/util/cache.h @@ -1,6 +1,7 @@ #ifndef __PERF_CACHE_H #define __PERF_CACHE_H +#include <stdbool.h> #include "util.h" #include "strbuf.h" #include "../perf.h" @@ -12,56 +13,16 @@ #define PERF_DIR_ENVIRONMENT "PERF_DIR" #define PERF_WORK_TREE_ENVIRONMENT "PERF_WORK_TREE" -#define DEFAULT_PERF_DIR_ENVIRONMENT ".perf" -#define DB_ENVIRONMENT "PERF_OBJECT_DIRECTORY" -#define INDEX_ENVIRONMENT "PERF_INDEX_FILE" -#define GRAFT_ENVIRONMENT "PERF_GRAFT_FILE" -#define TEMPLATE_DIR_ENVIRONMENT "PERF_TEMPLATE_DIR" -#define CONFIG_ENVIRONMENT "PERF_CONFIG" #define EXEC_PATH_ENVIRONMENT "PERF_EXEC_PATH" -#define CEILING_DIRECTORIES_ENVIRONMENT "PERF_CEILING_DIRECTORIES" -#define PERFATTRIBUTES_FILE ".perfattributes" -#define INFOATTRIBUTES_FILE "info/attributes" -#define ATTRIBUTE_MACRO_PREFIX "[attr]" +#define DEFAULT_PERF_DIR_ENVIRONMENT ".perf" #define PERF_DEBUGFS_ENVIRONMENT "PERF_DEBUGFS_DIR" typedef int (*config_fn_t)(const char *, const char *, void *); extern int perf_default_config(const char *, const char *, void *); -extern int perf_config_from_file(config_fn_t fn, const char *, void *); extern int perf_config(config_fn_t fn, void *); -extern int perf_parse_ulong(const char *, unsigned long *); extern int perf_config_int(const char *, const char *); -extern unsigned long perf_config_ulong(const char *, const char *); -extern int perf_config_bool_or_int(const char *, const char *, int *); extern int perf_config_bool(const char *, const char *); -extern int perf_config_string(const char **, const char *, const char *); -extern int perf_config_set(const char *, const char *); -extern int perf_config_set_multivar(const char *, const char *, const char *, int); -extern int perf_config_rename_section(const char *, const char *); -extern const char *perf_etc_perfconfig(void); -extern int check_repository_format_version(const char *var, const char *value, void *cb); -extern int perf_config_system(void); -extern int perf_config_global(void); extern int config_error_nonbool(const char *); -extern const char *config_exclusive_filename; - -#define MAX_PERFNAME (1000) -extern char perf_default_email[MAX_PERFNAME]; -extern char perf_default_name[MAX_PERFNAME]; -extern int user_ident_explicitly_given; - -extern const char *perf_log_output_encoding; -extern const char *perf_mailmap_file; - -/* IO helper functions */ -extern void maybe_flush_or_die(FILE *, const char *); -extern int copy_fd(int ifd, int ofd); -extern int copy_file(const char *dst, const char *src, int mode); -extern ssize_t write_in_full(int fd, const void *buf, size_t count); -extern void write_or_die(int fd, const void *buf, size_t count); -extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg); -extern int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg); -extern void fsync_or_die(int fd, const char *); /* pager.c */ extern void setup_pager(void); @@ -69,8 +30,18 @@ extern const char *pager_program; extern int pager_in_use(void); extern int pager_use_color; -extern const char *editor_program; -extern const char *excludes_file; +extern int use_browser; + +#ifdef NO_NEWT_SUPPORT +static inline void setup_browser(void) +{ + setup_pager(); +} +static inline void exit_browser(bool wait_for_ok __used) {} +#else +void setup_browser(void); +void exit_browser(bool wait_for_ok); +#endif char *alias_lookup(const char *alias); int split_cmdline(char *cmdline, const char ***argv); @@ -101,22 +72,12 @@ static inline int is_absolute_path(const char *path) return path[0] == '/'; } -const char *make_absolute_path(const char *path); const char *make_nonrelative_path(const char *path); -const char *make_relative_path(const char *abs, const char *base); -int normalize_path_copy(char *dst, const char *src); -int longest_ancestor_length(const char *path, const char *prefix_list); char *strip_path_suffix(const char *path, const char *suffix); extern char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2))); extern char *perf_path(const char *fmt, ...) __attribute__((format (printf, 1, 2))); -/* perf_mkstemp() - create tmp file honoring TMPDIR variable */ -extern int perf_mkstemp(char *path, size_t len, const char *template); -extern char *mksnpath(char *buf, size_t n, const char *fmt, ...) - __attribute__((format (printf, 3, 4))); -extern char *perf_snpath(char *buf, size_t n, const char *fmt, ...) - __attribute__((format (printf, 3, 4))); extern char *perf_pathdup(const char *fmt, ...) __attribute__((format (printf, 1, 2))); diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c index b3b71258272a..52c777e451ed 100644 --- a/tools/perf/util/callchain.c +++ b/tools/perf/util/callchain.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 2009, Frederic Weisbecker <fweisbec@gmail.com> + * Copyright (C) 2009-2010, Frederic Weisbecker <fweisbec@gmail.com> * * Handle the callchains from the stream in an ad-hoc radix tree and then * sort them in an rbtree. @@ -15,8 +15,16 @@ #include <errno.h> #include <math.h> +#include "util.h" #include "callchain.h" +bool ip_callchain__valid(struct ip_callchain *chain, event_t *event) +{ + unsigned int chain_size = event->header.size; + chain_size -= (unsigned long)&event->ip.__more_data - (unsigned long)event; + return chain->nr * sizeof(u64) <= chain_size; +} + #define chain_for_each_child(child, parent) \ list_for_each_entry(child, &parent->children, brothers) @@ -160,7 +168,7 @@ create_child(struct callchain_node *parent, bool inherit_children) { struct callchain_node *new; - new = malloc(sizeof(*new)); + new = zalloc(sizeof(*new)); if (!new) { perror("not enough memory to create child for code path tree"); return NULL; @@ -183,25 +191,36 @@ create_child(struct callchain_node *parent, bool inherit_children) return new; } + +struct resolved_ip { + u64 ip; + struct map_symbol ms; +}; + +struct resolved_chain { + u64 nr; + struct resolved_ip ips[0]; +}; + + /* * Fill the node with callchain values */ static void -fill_node(struct callchain_node *node, struct ip_callchain *chain, - int start, struct symbol **syms) +fill_node(struct callchain_node *node, struct resolved_chain *chain, int start) { unsigned int i; for (i = start; i < chain->nr; i++) { struct callchain_list *call; - call = malloc(sizeof(*call)); + call = zalloc(sizeof(*call)); if (!call) { perror("not enough memory for the code path tree"); return; } - call->ip = chain->ips[i]; - call->sym = syms[i]; + call->ip = chain->ips[i].ip; + call->ms = chain->ips[i].ms; list_add_tail(&call->list, &node->val); } node->val_nr = chain->nr - start; @@ -210,16 +229,16 @@ fill_node(struct callchain_node *node, struct ip_callchain *chain, } static void -add_child(struct callchain_node *parent, struct ip_callchain *chain, - int start, struct symbol **syms) +add_child(struct callchain_node *parent, struct resolved_chain *chain, + int start, u64 period) { struct callchain_node *new; new = create_child(parent, false); - fill_node(new, chain, start, syms); + fill_node(new, chain, start); new->children_hit = 0; - new->hit = 1; + new->hit = period; } /* @@ -228,9 +247,9 @@ add_child(struct callchain_node *parent, struct ip_callchain *chain, * Then create another child to host the given callchain of new branch */ static void -split_add_child(struct callchain_node *parent, struct ip_callchain *chain, +split_add_child(struct callchain_node *parent, struct resolved_chain *chain, struct callchain_list *to_split, int idx_parents, int idx_local, - struct symbol **syms) + u64 period) { struct callchain_node *new; struct list_head *old_tail; @@ -257,40 +276,41 @@ split_add_child(struct callchain_node *parent, struct ip_callchain *chain, /* create a new child for the new branch if any */ if (idx_total < chain->nr) { parent->hit = 0; - add_child(parent, chain, idx_total, syms); - parent->children_hit++; + add_child(parent, chain, idx_total, period); + parent->children_hit += period; } else { - parent->hit = 1; + parent->hit = period; } } static int -__append_chain(struct callchain_node *root, struct ip_callchain *chain, - unsigned int start, struct symbol **syms); +__append_chain(struct callchain_node *root, struct resolved_chain *chain, + unsigned int start, u64 period); static void -__append_chain_children(struct callchain_node *root, struct ip_callchain *chain, - struct symbol **syms, unsigned int start) +__append_chain_children(struct callchain_node *root, + struct resolved_chain *chain, + unsigned int start, u64 period) { struct callchain_node *rnode; /* lookup in childrens */ chain_for_each_child(rnode, root) { - unsigned int ret = __append_chain(rnode, chain, start, syms); + unsigned int ret = __append_chain(rnode, chain, start, period); if (!ret) goto inc_children_hit; } /* nothing in children, add to the current node */ - add_child(root, chain, start, syms); + add_child(root, chain, start, period); inc_children_hit: - root->children_hit++; + root->children_hit += period; } static int -__append_chain(struct callchain_node *root, struct ip_callchain *chain, - unsigned int start, struct symbol **syms) +__append_chain(struct callchain_node *root, struct resolved_chain *chain, + unsigned int start, u64 period) { struct callchain_list *cnode; unsigned int i = start; @@ -302,13 +322,19 @@ __append_chain(struct callchain_node *root, struct ip_callchain *chain, * anywhere inside a function. */ list_for_each_entry(cnode, &root->val, list) { + struct symbol *sym; + if (i == chain->nr) break; - if (cnode->sym && syms[i]) { - if (cnode->sym->start != syms[i]->start) + + sym = chain->ips[i].ms.sym; + + if (cnode->ms.sym && sym) { + if (cnode->ms.sym->start != sym->start) break; - } else if (cnode->ip != chain->ips[i]) + } else if (cnode->ip != chain->ips[i].ip) break; + if (!found) found = true; i++; @@ -320,26 +346,61 @@ __append_chain(struct callchain_node *root, struct ip_callchain *chain, /* we match only a part of the node. Split it and add the new chain */ if (i - start < root->val_nr) { - split_add_child(root, chain, cnode, start, i - start, syms); + split_add_child(root, chain, cnode, start, i - start, period); return 0; } /* we match 100% of the path, increment the hit */ if (i - start == root->val_nr && i == chain->nr) { - root->hit++; + root->hit += period; return 0; } /* We match the node and still have a part remaining */ - __append_chain_children(root, chain, syms, i); + __append_chain_children(root, chain, i, period); return 0; } -void append_chain(struct callchain_node *root, struct ip_callchain *chain, - struct symbol **syms) +static void filter_context(struct ip_callchain *old, struct resolved_chain *new, + struct map_symbol *syms) { + int i, j = 0; + + for (i = 0; i < (int)old->nr; i++) { + if (old->ips[i] >= PERF_CONTEXT_MAX) + continue; + + new->ips[j].ip = old->ips[i]; + new->ips[j].ms = syms[i]; + j++; + } + + new->nr = j; +} + + +int append_chain(struct callchain_node *root, struct ip_callchain *chain, + struct map_symbol *syms, u64 period) +{ + struct resolved_chain *filtered; + if (!chain->nr) - return; - __append_chain_children(root, chain, syms, 0); + return 0; + + filtered = zalloc(sizeof(*filtered) + + chain->nr * sizeof(struct resolved_ip)); + if (!filtered) + return -ENOMEM; + + filter_context(chain, filtered, syms); + + if (!filtered->nr) + goto end; + + __append_chain_children(root, filtered, 0, period); +end: + free(filtered); + + return 0; } diff --git a/tools/perf/util/callchain.h b/tools/perf/util/callchain.h index ad4626de4c2b..f2e9ee164bd8 100644 --- a/tools/perf/util/callchain.h +++ b/tools/perf/util/callchain.h @@ -4,7 +4,7 @@ #include "../perf.h" #include <linux/list.h> #include <linux/rbtree.h> -#include "util.h" +#include "event.h" #include "symbol.h" enum chain_mode { @@ -33,13 +33,14 @@ typedef void (*sort_chain_func_t)(struct rb_root *, struct callchain_node *, struct callchain_param { enum chain_mode mode; + u32 print_limit; double min_percent; sort_chain_func_t sort; }; struct callchain_list { u64 ip; - struct symbol *sym; + struct map_symbol ms; struct list_head list; }; @@ -48,6 +49,9 @@ static inline void callchain_init(struct callchain_node *node) INIT_LIST_HEAD(&node->brothers); INIT_LIST_HEAD(&node->children); INIT_LIST_HEAD(&node->val); + + node->parent = NULL; + node->hit = 0; } static inline u64 cumul_hits(struct callchain_node *node) @@ -56,6 +60,8 @@ static inline u64 cumul_hits(struct callchain_node *node) } int register_callchain_param(struct callchain_param *param); -void append_chain(struct callchain_node *root, struct ip_callchain *chain, - struct symbol **syms); +int append_chain(struct callchain_node *root, struct ip_callchain *chain, + struct map_symbol *syms, u64 period); + +bool ip_callchain__valid(struct ip_callchain *chain, event_t *event); #endif /* __PERF_CALLCHAIN_H */ diff --git a/tools/perf/util/color.c b/tools/perf/util/color.c index e88bca55a599..e191eb9a667f 100644 --- a/tools/perf/util/color.c +++ b/tools/perf/util/color.c @@ -166,6 +166,31 @@ int perf_color_default_config(const char *var, const char *value, void *cb) return perf_default_config(var, value, cb); } +static int __color_vsnprintf(char *bf, size_t size, const char *color, + const char *fmt, va_list args, const char *trail) +{ + int r = 0; + + /* + * Auto-detect: + */ + if (perf_use_color_default < 0) { + if (isatty(1) || pager_in_use()) + perf_use_color_default = 1; + else + perf_use_color_default = 0; + } + + if (perf_use_color_default && *color) + r += snprintf(bf, size, "%s", color); + r += vsnprintf(bf + r, size - r, fmt, args); + if (perf_use_color_default && *color) + r += snprintf(bf + r, size - r, "%s", PERF_COLOR_RESET); + if (trail) + r += snprintf(bf + r, size - r, "%s", trail); + return r; +} + static int __color_vfprintf(FILE *fp, const char *color, const char *fmt, va_list args, const char *trail) { @@ -191,11 +216,28 @@ static int __color_vfprintf(FILE *fp, const char *color, const char *fmt, return r; } +int color_vsnprintf(char *bf, size_t size, const char *color, + const char *fmt, va_list args) +{ + return __color_vsnprintf(bf, size, color, fmt, args, NULL); +} + int color_vfprintf(FILE *fp, const char *color, const char *fmt, va_list args) { return __color_vfprintf(fp, color, fmt, args, NULL); } +int color_snprintf(char *bf, size_t size, const char *color, + const char *fmt, ...) +{ + va_list args; + int r; + + va_start(args, fmt); + r = color_vsnprintf(bf, size, color, fmt, args); + va_end(args); + return r; +} int color_fprintf(FILE *fp, const char *color, const char *fmt, ...) { @@ -274,3 +316,9 @@ int percent_color_fprintf(FILE *fp, const char *fmt, double percent) return r; } + +int percent_color_snprintf(char *bf, size_t size, const char *fmt, double percent) +{ + const char *color = get_percent_color(percent); + return color_snprintf(bf, size, color, fmt, percent); +} diff --git a/tools/perf/util/color.h b/tools/perf/util/color.h index 24e8809210bb..dea082b79602 100644 --- a/tools/perf/util/color.h +++ b/tools/perf/util/color.h @@ -32,10 +32,14 @@ int perf_color_default_config(const char *var, const char *value, void *cb); int perf_config_colorbool(const char *var, const char *value, int stdout_is_tty); void color_parse(const char *value, const char *var, char *dst); void color_parse_mem(const char *value, int len, const char *var, char *dst); +int color_vsnprintf(char *bf, size_t size, const char *color, + const char *fmt, va_list args); int color_vfprintf(FILE *fp, const char *color, const char *fmt, va_list args); int color_fprintf(FILE *fp, const char *color, const char *fmt, ...); +int color_snprintf(char *bf, size_t size, const char *color, const char *fmt, ...); int color_fprintf_ln(FILE *fp, const char *color, const char *fmt, ...); int color_fwrite_lines(FILE *fp, const char *color, size_t count, const char *buf); +int percent_color_snprintf(char *bf, size_t size, const char *fmt, double percent); int percent_color_fprintf(FILE *fp, const char *fmt, double percent); const char *get_percent_color(double percent); diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c index 8784649109ce..dabe892d0e53 100644 --- a/tools/perf/util/config.c +++ b/tools/perf/util/config.c @@ -16,7 +16,7 @@ static const char *config_file_name; static int config_linenr; static int config_file_eof; -const char *config_exclusive_filename = NULL; +static const char *config_exclusive_filename; static int get_next_char(void) { @@ -291,19 +291,6 @@ static int perf_parse_long(const char *value, long *ret) return 0; } -int perf_parse_ulong(const char *value, unsigned long *ret) -{ - if (value && *value) { - char *end; - unsigned long val = strtoul(value, &end, 0); - if (!parse_unit_factor(end, &val)) - return 0; - *ret = val; - return 1; - } - return 0; -} - static void die_bad_config(const char *name) { if (config_file_name) @@ -319,15 +306,7 @@ int perf_config_int(const char *name, const char *value) return ret; } -unsigned long perf_config_ulong(const char *name, const char *value) -{ - unsigned long ret; - if (!perf_parse_ulong(value, &ret)) - die_bad_config(name); - return ret; -} - -int perf_config_bool_or_int(const char *name, const char *value, int *is_bool) +static int perf_config_bool_or_int(const char *name, const char *value, int *is_bool) { *is_bool = 1; if (!value) @@ -348,14 +327,6 @@ int perf_config_bool(const char *name, const char *value) return !!perf_config_bool_or_int(name, value, &discard); } -int perf_config_string(const char **dest, const char *var, const char *value) -{ - if (!value) - return config_error_nonbool(var); - *dest = strdup(value); - return 0; -} - static int perf_default_core_config(const char *var __used, const char *value __used) { /* Add other config variables here and to Documentation/config.txt. */ @@ -371,7 +342,7 @@ int perf_default_config(const char *var, const char *value, void *dummy __used) return 0; } -int perf_config_from_file(config_fn_t fn, const char *filename, void *data) +static int perf_config_from_file(config_fn_t fn, const char *filename, void *data) { int ret; FILE *f = fopen(filename, "r"); @@ -389,7 +360,7 @@ int perf_config_from_file(config_fn_t fn, const char *filename, void *data) return ret; } -const char *perf_etc_perfconfig(void) +static const char *perf_etc_perfconfig(void) { static const char *system_wide; if (!system_wide) @@ -403,12 +374,12 @@ static int perf_env_bool(const char *k, int def) return v ? perf_config_bool(k, v) : def; } -int perf_config_system(void) +static int perf_config_system(void) { return !perf_env_bool("PERF_CONFIG_NOSYSTEM", 0); } -int perf_config_global(void) +static int perf_config_global(void) { return !perf_env_bool("PERF_CONFIG_NOGLOBAL", 0); } @@ -450,426 +421,6 @@ int perf_config(config_fn_t fn, void *data) } /* - * Find all the stuff for perf_config_set() below. - */ - -#define MAX_MATCHES 512 - -static struct { - int baselen; - char* key; - int do_not_match; - regex_t* value_regex; - int multi_replace; - size_t offset[MAX_MATCHES]; - enum { START, SECTION_SEEN, SECTION_END_SEEN, KEY_SEEN } state; - int seen; -} store; - -static int matches(const char* key, const char* value) -{ - return !strcmp(key, store.key) && - (store.value_regex == NULL || - (store.do_not_match ^ - !regexec(store.value_regex, value, 0, NULL, 0))); -} - -static int store_aux(const char* key, const char* value, void *cb __used) -{ - int section_len; - const char *ep; - - switch (store.state) { - case KEY_SEEN: - if (matches(key, value)) { - if (store.seen == 1 && store.multi_replace == 0) { - warning("%s has multiple values", key); - } else if (store.seen >= MAX_MATCHES) { - error("too many matches for %s", key); - return 1; - } - - store.offset[store.seen] = ftell(config_file); - store.seen++; - } - break; - case SECTION_SEEN: - /* - * What we are looking for is in store.key (both - * section and var), and its section part is baselen - * long. We found key (again, both section and var). - * We would want to know if this key is in the same - * section as what we are looking for. We already - * know we are in the same section as what should - * hold store.key. - */ - ep = strrchr(key, '.'); - section_len = ep - key; - - if ((section_len != store.baselen) || - memcmp(key, store.key, section_len+1)) { - store.state = SECTION_END_SEEN; - break; - } - - /* - * Do not increment matches: this is no match, but we - * just made sure we are in the desired section. - */ - store.offset[store.seen] = ftell(config_file); - /* fallthru */ - case SECTION_END_SEEN: - case START: - if (matches(key, value)) { - store.offset[store.seen] = ftell(config_file); - store.state = KEY_SEEN; - store.seen++; - } else { - if (strrchr(key, '.') - key == store.baselen && - !strncmp(key, store.key, store.baselen)) { - store.state = SECTION_SEEN; - store.offset[store.seen] = ftell(config_file); - } - } - default: - break; - } - return 0; -} - -static int store_write_section(int fd, const char* key) -{ - const char *dot; - int i, success; - struct strbuf sb = STRBUF_INIT; - - dot = memchr(key, '.', store.baselen); - if (dot) { - strbuf_addf(&sb, "[%.*s \"", (int)(dot - key), key); - for (i = dot - key + 1; i < store.baselen; i++) { - if (key[i] == '"' || key[i] == '\\') - strbuf_addch(&sb, '\\'); - strbuf_addch(&sb, key[i]); - } - strbuf_addstr(&sb, "\"]\n"); - } else { - strbuf_addf(&sb, "[%.*s]\n", store.baselen, key); - } - - success = (write_in_full(fd, sb.buf, sb.len) == (ssize_t)sb.len); - strbuf_release(&sb); - - return success; -} - -static int store_write_pair(int fd, const char* key, const char* value) -{ - int i, success; - int length = strlen(key + store.baselen + 1); - const char *quote = ""; - struct strbuf sb = STRBUF_INIT; - - /* - * Check to see if the value needs to be surrounded with a dq pair. - * Note that problematic characters are always backslash-quoted; this - * check is about not losing leading or trailing SP and strings that - * follow beginning-of-comment characters (i.e. ';' and '#') by the - * configuration parser. - */ - if (value[0] == ' ') - quote = "\""; - for (i = 0; value[i]; i++) - if (value[i] == ';' || value[i] == '#') - quote = "\""; - if (i && value[i - 1] == ' ') - quote = "\""; - - strbuf_addf(&sb, "\t%.*s = %s", - length, key + store.baselen + 1, quote); - - for (i = 0; value[i]; i++) - switch (value[i]) { - case '\n': - strbuf_addstr(&sb, "\\n"); - break; - case '\t': - strbuf_addstr(&sb, "\\t"); - break; - case '"': - case '\\': - strbuf_addch(&sb, '\\'); - default: - strbuf_addch(&sb, value[i]); - break; - } - strbuf_addf(&sb, "%s\n", quote); - - success = (write_in_full(fd, sb.buf, sb.len) == (ssize_t)sb.len); - strbuf_release(&sb); - - return success; -} - -static ssize_t find_beginning_of_line(const char* contents, size_t size, - size_t offset_, int* found_bracket) -{ - size_t equal_offset = size, bracket_offset = size; - ssize_t offset; - -contline: - for (offset = offset_-2; offset > 0 - && contents[offset] != '\n'; offset--) - switch (contents[offset]) { - case '=': equal_offset = offset; break; - case ']': bracket_offset = offset; break; - default: break; - } - if (offset > 0 && contents[offset-1] == '\\') { - offset_ = offset; - goto contline; - } - if (bracket_offset < equal_offset) { - *found_bracket = 1; - offset = bracket_offset+1; - } else - offset++; - - return offset; -} - -int perf_config_set(const char* key, const char* value) -{ - return perf_config_set_multivar(key, value, NULL, 0); -} - -/* - * If value==NULL, unset in (remove from) config, - * if value_regex!=NULL, disregard key/value pairs where value does not match. - * if multi_replace==0, nothing, or only one matching key/value is replaced, - * else all matching key/values (regardless how many) are removed, - * before the new pair is written. - * - * Returns 0 on success. - * - * This function does this: - * - * - it locks the config file by creating ".perf/config.lock" - * - * - it then parses the config using store_aux() as validator to find - * the position on the key/value pair to replace. If it is to be unset, - * it must be found exactly once. - * - * - the config file is mmap()ed and the part before the match (if any) is - * written to the lock file, then the changed part and the rest. - * - * - the config file is removed and the lock file rename()d to it. - * - */ -int perf_config_set_multivar(const char* key, const char* value, - const char* value_regex, int multi_replace) -{ - int i, dot; - int fd = -1, in_fd; - int ret = 0; - char* config_filename; - const char* last_dot = strrchr(key, '.'); - - if (config_exclusive_filename) - config_filename = strdup(config_exclusive_filename); - else - config_filename = perf_pathdup("config"); - - /* - * Since "key" actually contains the section name and the real - * key name separated by a dot, we have to know where the dot is. - */ - - if (last_dot == NULL) { - error("key does not contain a section: %s", key); - ret = 2; - goto out_free; - } - store.baselen = last_dot - key; - - store.multi_replace = multi_replace; - - /* - * Validate the key and while at it, lower case it for matching. - */ - store.key = malloc(strlen(key) + 1); - dot = 0; - for (i = 0; key[i]; i++) { - unsigned char c = key[i]; - if (c == '.') - dot = 1; - /* Leave the extended basename untouched.. */ - if (!dot || i > store.baselen) { - if (!iskeychar(c) || (i == store.baselen+1 && !isalpha(c))) { - error("invalid key: %s", key); - free(store.key); - ret = 1; - goto out_free; - } - c = tolower(c); - } else if (c == '\n') { - error("invalid key (newline): %s", key); - free(store.key); - ret = 1; - goto out_free; - } - store.key[i] = c; - } - store.key[i] = 0; - - /* - * If .perf/config does not exist yet, write a minimal version. - */ - in_fd = open(config_filename, O_RDONLY); - if ( in_fd < 0 ) { - free(store.key); - - if ( ENOENT != errno ) { - error("opening %s: %s", config_filename, - strerror(errno)); - ret = 3; /* same as "invalid config file" */ - goto out_free; - } - /* if nothing to unset, error out */ - if (value == NULL) { - ret = 5; - goto out_free; - } - - store.key = (char*)key; - if (!store_write_section(fd, key) || - !store_write_pair(fd, key, value)) - goto write_err_out; - } else { - struct stat st; - char *contents; - ssize_t contents_sz, copy_begin, copy_end; - int new_line = 0; - - if (value_regex == NULL) - store.value_regex = NULL; - else { - if (value_regex[0] == '!') { - store.do_not_match = 1; - value_regex++; - } else - store.do_not_match = 0; - - store.value_regex = (regex_t*)malloc(sizeof(regex_t)); - if (regcomp(store.value_regex, value_regex, - REG_EXTENDED)) { - error("invalid pattern: %s", value_regex); - free(store.value_regex); - ret = 6; - goto out_free; - } - } - - store.offset[0] = 0; - store.state = START; - store.seen = 0; - - /* - * After this, store.offset will contain the *end* offset - * of the last match, or remain at 0 if no match was found. - * As a side effect, we make sure to transform only a valid - * existing config file. - */ - if (perf_config_from_file(store_aux, config_filename, NULL)) { - error("invalid config file %s", config_filename); - free(store.key); - if (store.value_regex != NULL) { - regfree(store.value_regex); - free(store.value_regex); - } - ret = 3; - goto out_free; - } - - free(store.key); - if (store.value_regex != NULL) { - regfree(store.value_regex); - free(store.value_regex); - } - - /* if nothing to unset, or too many matches, error out */ - if ((store.seen == 0 && value == NULL) || - (store.seen > 1 && multi_replace == 0)) { - ret = 5; - goto out_free; - } - - fstat(in_fd, &st); - contents_sz = xsize_t(st.st_size); - contents = mmap(NULL, contents_sz, PROT_READ, - MAP_PRIVATE, in_fd, 0); - close(in_fd); - - if (store.seen == 0) - store.seen = 1; - - for (i = 0, copy_begin = 0; i < store.seen; i++) { - if (store.offset[i] == 0) { - store.offset[i] = copy_end = contents_sz; - } else if (store.state != KEY_SEEN) { - copy_end = store.offset[i]; - } else - copy_end = find_beginning_of_line( - contents, contents_sz, - store.offset[i]-2, &new_line); - - if (copy_end > 0 && contents[copy_end-1] != '\n') - new_line = 1; - - /* write the first part of the config */ - if (copy_end > copy_begin) { - if (write_in_full(fd, contents + copy_begin, - copy_end - copy_begin) < - copy_end - copy_begin) - goto write_err_out; - if (new_line && - write_in_full(fd, "\n", 1) != 1) - goto write_err_out; - } - copy_begin = store.offset[i]; - } - - /* write the pair (value == NULL means unset) */ - if (value != NULL) { - if (store.state == START) { - if (!store_write_section(fd, key)) - goto write_err_out; - } - if (!store_write_pair(fd, key, value)) - goto write_err_out; - } - - /* write the rest of the config */ - if (copy_begin < contents_sz) - if (write_in_full(fd, contents + copy_begin, - contents_sz - copy_begin) < - contents_sz - copy_begin) - goto write_err_out; - - munmap(contents, contents_sz); - } - - ret = 0; - -out_free: - free(config_filename); - return ret; - -write_err_out: - goto out_free; - -} - -/* * Call this to report error for your variable that should not * get a boolean value (i.e. "[my] var" means "true"). */ diff --git a/tools/perf/util/cpumap.c b/tools/perf/util/cpumap.c new file mode 100644 index 000000000000..4e01490e51e5 --- /dev/null +++ b/tools/perf/util/cpumap.c @@ -0,0 +1,59 @@ +#include "util.h" +#include "../perf.h" +#include "cpumap.h" +#include <assert.h> +#include <stdio.h> + +int cpumap[MAX_NR_CPUS]; + +static int default_cpu_map(void) +{ + int nr_cpus, i; + + nr_cpus = sysconf(_SC_NPROCESSORS_ONLN); + assert(nr_cpus <= MAX_NR_CPUS); + assert((int)nr_cpus >= 0); + + for (i = 0; i < nr_cpus; ++i) + cpumap[i] = i; + + return nr_cpus; +} + +int read_cpu_map(void) +{ + FILE *onlnf; + int nr_cpus = 0; + int n, cpu, prev; + char sep; + + onlnf = fopen("/sys/devices/system/cpu/online", "r"); + if (!onlnf) + return default_cpu_map(); + + sep = 0; + prev = -1; + for (;;) { + n = fscanf(onlnf, "%u%c", &cpu, &sep); + if (n <= 0) + break; + if (prev >= 0) { + assert(nr_cpus + cpu - prev - 1 < MAX_NR_CPUS); + while (++prev < cpu) + cpumap[nr_cpus++] = prev; + } + assert (nr_cpus < MAX_NR_CPUS); + cpumap[nr_cpus++] = cpu; + if (n == 2 && sep == '-') + prev = cpu; + else + prev = -1; + if (n == 1 || sep == '\n') + break; + } + fclose(onlnf); + if (nr_cpus > 0) + return nr_cpus; + + return default_cpu_map(); +} diff --git a/tools/perf/util/cpumap.h b/tools/perf/util/cpumap.h new file mode 100644 index 000000000000..86c78bb33098 --- /dev/null +++ b/tools/perf/util/cpumap.h @@ -0,0 +1,7 @@ +#ifndef __PERF_CPUMAP_H +#define __PERF_CPUMAP_H + +extern int read_cpu_map(void); +extern int cpumap[]; + +#endif /* __PERF_CPUMAP_H */ diff --git a/tools/perf/util/data_map.c b/tools/perf/util/data_map.c deleted file mode 100644 index b557b836de3d..000000000000 --- a/tools/perf/util/data_map.c +++ /dev/null @@ -1,252 +0,0 @@ -#include "symbol.h" -#include "util.h" -#include "debug.h" -#include "thread.h" -#include "session.h" - -static int process_event_stub(event_t *event __used, - struct perf_session *session __used) -{ - dump_printf(": unhandled!\n"); - return 0; -} - -static void perf_event_ops__fill_defaults(struct perf_event_ops *handler) -{ - if (!handler->process_sample_event) - handler->process_sample_event = process_event_stub; - if (!handler->process_mmap_event) - handler->process_mmap_event = process_event_stub; - if (!handler->process_comm_event) - handler->process_comm_event = process_event_stub; - if (!handler->process_fork_event) - handler->process_fork_event = process_event_stub; - if (!handler->process_exit_event) - handler->process_exit_event = process_event_stub; - if (!handler->process_lost_event) - handler->process_lost_event = process_event_stub; - if (!handler->process_read_event) - handler->process_read_event = process_event_stub; - if (!handler->process_throttle_event) - handler->process_throttle_event = process_event_stub; - if (!handler->process_unthrottle_event) - handler->process_unthrottle_event = process_event_stub; -} - -static const char *event__name[] = { - [0] = "TOTAL", - [PERF_RECORD_MMAP] = "MMAP", - [PERF_RECORD_LOST] = "LOST", - [PERF_RECORD_COMM] = "COMM", - [PERF_RECORD_EXIT] = "EXIT", - [PERF_RECORD_THROTTLE] = "THROTTLE", - [PERF_RECORD_UNTHROTTLE] = "UNTHROTTLE", - [PERF_RECORD_FORK] = "FORK", - [PERF_RECORD_READ] = "READ", - [PERF_RECORD_SAMPLE] = "SAMPLE", -}; - -unsigned long event__total[PERF_RECORD_MAX]; - -void event__print_totals(void) -{ - int i; - for (i = 0; i < PERF_RECORD_MAX; ++i) - pr_info("%10s events: %10ld\n", - event__name[i], event__total[i]); -} - -static int process_event(event_t *event, struct perf_session *session, - struct perf_event_ops *ops, - unsigned long offset, unsigned long head) -{ - trace_event(event); - - if (event->header.type < PERF_RECORD_MAX) { - dump_printf("%p [%p]: PERF_RECORD_%s", - (void *)(offset + head), - (void *)(long)(event->header.size), - event__name[event->header.type]); - ++event__total[0]; - ++event__total[event->header.type]; - } - - switch (event->header.type) { - case PERF_RECORD_SAMPLE: - return ops->process_sample_event(event, session); - case PERF_RECORD_MMAP: - return ops->process_mmap_event(event, session); - case PERF_RECORD_COMM: - return ops->process_comm_event(event, session); - case PERF_RECORD_FORK: - return ops->process_fork_event(event, session); - case PERF_RECORD_EXIT: - return ops->process_exit_event(event, session); - case PERF_RECORD_LOST: - return ops->process_lost_event(event, session); - case PERF_RECORD_READ: - return ops->process_read_event(event, session); - case PERF_RECORD_THROTTLE: - return ops->process_throttle_event(event, session); - case PERF_RECORD_UNTHROTTLE: - return ops->process_unthrottle_event(event, session); - default: - ops->total_unknown++; - return -1; - } -} - -int perf_header__read_build_ids(int input, u64 offset, u64 size) -{ - struct build_id_event bev; - char filename[PATH_MAX]; - u64 limit = offset + size; - int err = -1; - - while (offset < limit) { - struct dso *dso; - ssize_t len; - - if (read(input, &bev, sizeof(bev)) != sizeof(bev)) - goto out; - - len = bev.header.size - sizeof(bev); - if (read(input, filename, len) != len) - goto out; - - dso = dsos__findnew(filename); - if (dso != NULL) - dso__set_build_id(dso, &bev.build_id); - - offset += bev.header.size; - } - err = 0; -out: - return err; -} - -static struct thread *perf_session__register_idle_thread(struct perf_session *self) -{ - struct thread *thread = perf_session__findnew(self, 0); - - if (!thread || thread__set_comm(thread, "swapper")) { - pr_err("problem inserting idle task.\n"); - thread = NULL; - } - - return thread; -} - -int perf_session__process_events(struct perf_session *self, - struct perf_event_ops *ops) -{ - int err; - unsigned long head, shift; - unsigned long offset = 0; - size_t page_size; - event_t *event; - uint32_t size; - char *buf; - - if (perf_session__register_idle_thread(self) == NULL) - return -ENOMEM; - - perf_event_ops__fill_defaults(ops); - - page_size = getpagesize(); - - head = self->header.data_offset; - self->sample_type = perf_header__sample_type(&self->header); - - err = -EINVAL; - if (ops->sample_type_check && ops->sample_type_check(self) < 0) - goto out_err; - - if (!ops->full_paths) { - char bf[PATH_MAX]; - - if (getcwd(bf, sizeof(bf)) == NULL) { - err = -errno; -out_getcwd_err: - pr_err("failed to get the current directory\n"); - goto out_err; - } - self->cwd = strdup(bf); - if (self->cwd == NULL) { - err = -ENOMEM; - goto out_getcwd_err; - } - self->cwdlen = strlen(self->cwd); - } - - shift = page_size * (head / page_size); - offset += shift; - head -= shift; - -remap: - buf = mmap(NULL, page_size * self->mmap_window, PROT_READ, - MAP_SHARED, self->fd, offset); - if (buf == MAP_FAILED) { - pr_err("failed to mmap file\n"); - err = -errno; - goto out_err; - } - -more: - event = (event_t *)(buf + head); - - size = event->header.size; - if (!size) - size = 8; - - if (head + event->header.size >= page_size * self->mmap_window) { - int munmap_ret; - - shift = page_size * (head / page_size); - - munmap_ret = munmap(buf, page_size * self->mmap_window); - assert(munmap_ret == 0); - - offset += shift; - head -= shift; - goto remap; - } - - size = event->header.size; - - dump_printf("\n%p [%p]: event: %d\n", - (void *)(offset + head), - (void *)(long)event->header.size, - event->header.type); - - if (!size || process_event(event, self, ops, offset, head) < 0) { - - dump_printf("%p [%p]: skipping unknown header type: %d\n", - (void *)(offset + head), - (void *)(long)(event->header.size), - event->header.type); - - /* - * assume we lost track of the stream, check alignment, and - * increment a single u64 in the hope to catch on again 'soon'. - */ - - if (unlikely(head & 7)) - head &= ~7ULL; - - size = 8; - } - - head += size; - - if (offset + head >= self->header.data_offset + self->header.data_size) - goto done; - - if (offset + head < self->size) - goto more; - -done: - err = 0; -out_err: - return err; -} diff --git a/tools/perf/util/debug.c b/tools/perf/util/debug.c index 28d520d5a1fb..6cddff2bc970 100644 --- a/tools/perf/util/debug.c +++ b/tools/perf/util/debug.c @@ -6,12 +6,14 @@ #include <stdarg.h> #include <stdio.h> +#include "cache.h" #include "color.h" #include "event.h" #include "debug.h" +#include "util.h" int verbose = 0; -int dump_trace = 0; +bool dump_trace = false; int eprintf(int level, const char *fmt, ...) { @@ -20,7 +22,10 @@ int eprintf(int level, const char *fmt, ...) if (verbose >= level) { va_start(args, fmt); - ret = vfprintf(stderr, fmt, args); + if (use_browser > 0) + ret = browser__show_help(fmt, args); + else + ret = vfprintf(stderr, fmt, args); va_end(args); } diff --git a/tools/perf/util/debug.h b/tools/perf/util/debug.h index c6c24c522dea..047ac3324ebe 100644 --- a/tools/perf/util/debug.h +++ b/tools/perf/util/debug.h @@ -2,14 +2,38 @@ #ifndef __PERF_DEBUG_H #define __PERF_DEBUG_H +#include <stdbool.h> #include "event.h" extern int verbose; -extern int dump_trace; +extern bool dump_trace; -int eprintf(int level, - const char *fmt, ...) __attribute__((format(printf, 2, 3))); int dump_printf(const char *fmt, ...) __attribute__((format(printf, 1, 2))); void trace_event(event_t *event); +struct ui_progress; + +#ifdef NO_NEWT_SUPPORT +static inline int browser__show_help(const char *format __used, va_list ap __used) +{ + return 0; +} + +static inline struct ui_progress *ui_progress__new(const char *title __used, + u64 total __used) +{ + return (struct ui_progress *)1; +} + +static inline void ui_progress__update(struct ui_progress *self __used, + u64 curr __used) {} + +static inline void ui_progress__delete(struct ui_progress *self __used) {} +#else +int browser__show_help(const char *format, va_list ap); +struct ui_progress *ui_progress__new(const char *title, u64 total); +void ui_progress__update(struct ui_progress *self, u64 curr); +void ui_progress__delete(struct ui_progress *self); +#endif + #endif /* __PERF_DEBUG_H */ diff --git a/tools/perf/util/debugfs.c b/tools/perf/util/debugfs.c index 06b73ee02c49..a88fefc0cc0a 100644 --- a/tools/perf/util/debugfs.c +++ b/tools/perf/util/debugfs.c @@ -106,16 +106,14 @@ int debugfs_valid_entry(const char *path) return 0; } -/* mount the debugfs somewhere */ +/* mount the debugfs somewhere if it's not mounted */ -int debugfs_mount(const char *mountpoint) +char *debugfs_mount(const char *mountpoint) { - char mountcmd[128]; - /* see if it's already mounted */ if (debugfs_find_mountpoint()) { debugfs_premounted = 1; - return 0; + return debugfs_mountpoint; } /* if not mounted and no argument */ @@ -127,13 +125,14 @@ int debugfs_mount(const char *mountpoint) mountpoint = "/sys/kernel/debug"; } + if (mount(NULL, mountpoint, "debugfs", 0, NULL) < 0) + return NULL; + /* save the mountpoint */ strncpy(debugfs_mountpoint, mountpoint, sizeof(debugfs_mountpoint)); + debugfs_found = 1; - /* mount it */ - snprintf(mountcmd, sizeof(mountcmd), - "/bin/mount -t debugfs debugfs %s", mountpoint); - return system(mountcmd); + return debugfs_mountpoint; } /* umount the debugfs */ diff --git a/tools/perf/util/debugfs.h b/tools/perf/util/debugfs.h index 3cd14f9ae784..83a02879745f 100644 --- a/tools/perf/util/debugfs.h +++ b/tools/perf/util/debugfs.h @@ -15,7 +15,7 @@ extern const char *debugfs_find_mountpoint(void); extern int debugfs_valid_mountpoint(const char *debugfs); extern int debugfs_valid_entry(const char *path); -extern int debugfs_mount(const char *mountpoint); +extern char *debugfs_mount(const char *mountpoint); extern int debugfs_umount(void); extern int debugfs_write(const char *entry, const char *value); extern int debugfs_read(const char *entry, char *buffer, size_t size); diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c index bb0fd6da2d56..2fbf6a463c81 100644 --- a/tools/perf/util/event.c +++ b/tools/perf/util/event.c @@ -7,9 +7,25 @@ #include "strlist.h" #include "thread.h" +const char *event__name[] = { + [0] = "TOTAL", + [PERF_RECORD_MMAP] = "MMAP", + [PERF_RECORD_LOST] = "LOST", + [PERF_RECORD_COMM] = "COMM", + [PERF_RECORD_EXIT] = "EXIT", + [PERF_RECORD_THROTTLE] = "THROTTLE", + [PERF_RECORD_UNTHROTTLE] = "UNTHROTTLE", + [PERF_RECORD_FORK] = "FORK", + [PERF_RECORD_READ] = "READ", + [PERF_RECORD_SAMPLE] = "SAMPLE", + [PERF_RECORD_HEADER_ATTR] = "ATTR", + [PERF_RECORD_HEADER_EVENT_TYPE] = "EVENT_TYPE", + [PERF_RECORD_HEADER_TRACING_DATA] = "TRACING_DATA", + [PERF_RECORD_HEADER_BUILD_ID] = "BUILD_ID", +}; + static pid_t event__synthesize_comm(pid_t pid, int full, - int (*process)(event_t *event, - struct perf_session *session), + event__handler_t process, struct perf_session *session) { event_t ev; @@ -91,8 +107,7 @@ out_failure: } static int event__synthesize_mmap_events(pid_t pid, pid_t tgid, - int (*process)(event_t *event, - struct perf_session *session), + event__handler_t process, struct perf_session *session) { char filename[PATH_MAX]; @@ -112,7 +127,14 @@ static int event__synthesize_mmap_events(pid_t pid, pid_t tgid, while (1) { char bf[BUFSIZ], *pbf = bf; event_t ev = { - .header = { .type = PERF_RECORD_MMAP }, + .header = { + .type = PERF_RECORD_MMAP, + /* + * Just like the kernel, see __perf_event_mmap + * in kernel/perf_event.c + */ + .misc = PERF_RECORD_MISC_USER, + }, }; int n; size_t size; @@ -129,6 +151,7 @@ static int event__synthesize_mmap_events(pid_t pid, pid_t tgid, continue; pbf += n + 3; if (*pbf == 'x') { /* vm_exec */ + u64 vm_pgoff; char *execname = strchr(bf, '/'); /* Catch VDSO */ @@ -138,6 +161,14 @@ static int event__synthesize_mmap_events(pid_t pid, pid_t tgid, if (execname == NULL) continue; + pbf += 3; + n = hex2u64(pbf, &vm_pgoff); + /* pgoff is in bytes, not pages */ + if (n >= 0) + ev.mmap.pgoff = vm_pgoff << getpagesize(); + else + ev.mmap.pgoff = 0; + size = strlen(execname); execname[size - 1] = '\0'; /* Remove \n */ memcpy(ev.mmap.filename, execname, size); @@ -156,9 +187,51 @@ static int event__synthesize_mmap_events(pid_t pid, pid_t tgid, return 0; } -int event__synthesize_thread(pid_t pid, - int (*process)(event_t *event, - struct perf_session *session), +int event__synthesize_modules(event__handler_t process, + struct perf_session *session, + struct machine *machine) +{ + struct rb_node *nd; + struct map_groups *kmaps = &machine->kmaps; + u16 misc; + + /* + * kernel uses 0 for user space maps, see kernel/perf_event.c + * __perf_event_mmap + */ + if (machine__is_host(machine)) + misc = PERF_RECORD_MISC_KERNEL; + else + misc = PERF_RECORD_MISC_GUEST_KERNEL; + + for (nd = rb_first(&kmaps->maps[MAP__FUNCTION]); + nd; nd = rb_next(nd)) { + event_t ev; + size_t size; + struct map *pos = rb_entry(nd, struct map, rb_node); + + if (pos->dso->kernel) + continue; + + size = ALIGN(pos->dso->long_name_len + 1, sizeof(u64)); + memset(&ev, 0, sizeof(ev)); + ev.mmap.header.misc = misc; + ev.mmap.header.type = PERF_RECORD_MMAP; + ev.mmap.header.size = (sizeof(ev.mmap) - + (sizeof(ev.mmap.filename) - size)); + ev.mmap.start = pos->start; + ev.mmap.len = pos->end - pos->start; + ev.mmap.pid = machine->pid; + + memcpy(ev.mmap.filename, pos->dso->long_name, + pos->dso->long_name_len + 1); + process(&ev, session); + } + + return 0; +} + +int event__synthesize_thread(pid_t pid, event__handler_t process, struct perf_session *session) { pid_t tgid = event__synthesize_comm(pid, 1, process, session); @@ -167,8 +240,7 @@ int event__synthesize_thread(pid_t pid, return event__synthesize_mmap_events(pid, tgid, process, session); } -void event__synthesize_threads(int (*process)(event_t *event, - struct perf_session *session), +void event__synthesize_threads(event__handler_t process, struct perf_session *session) { DIR *proc; @@ -189,6 +261,85 @@ void event__synthesize_threads(int (*process)(event_t *event, closedir(proc); } +struct process_symbol_args { + const char *name; + u64 start; +}; + +static int find_symbol_cb(void *arg, const char *name, char type, u64 start) +{ + struct process_symbol_args *args = arg; + + /* + * Must be a function or at least an alias, as in PARISC64, where "_text" is + * an 'A' to the same address as "_stext". + */ + if (!(symbol_type__is_a(type, MAP__FUNCTION) || + type == 'A') || strcmp(name, args->name)) + return 0; + + args->start = start; + return 1; +} + +int event__synthesize_kernel_mmap(event__handler_t process, + struct perf_session *session, + struct machine *machine, + const char *symbol_name) +{ + size_t size; + const char *filename, *mmap_name; + char path[PATH_MAX]; + char name_buff[PATH_MAX]; + struct map *map; + + event_t ev = { + .header = { + .type = PERF_RECORD_MMAP, + }, + }; + /* + * We should get this from /sys/kernel/sections/.text, but till that is + * available use this, and after it is use this as a fallback for older + * kernels. + */ + struct process_symbol_args args = { .name = symbol_name, }; + + mmap_name = machine__mmap_name(machine, name_buff, sizeof(name_buff)); + if (machine__is_host(machine)) { + /* + * kernel uses PERF_RECORD_MISC_USER for user space maps, + * see kernel/perf_event.c __perf_event_mmap + */ + ev.header.misc = PERF_RECORD_MISC_KERNEL; + filename = "/proc/kallsyms"; + } else { + ev.header.misc = PERF_RECORD_MISC_GUEST_KERNEL; + if (machine__is_default_guest(machine)) + filename = (char *) symbol_conf.default_guest_kallsyms; + else { + sprintf(path, "%s/proc/kallsyms", machine->root_dir); + filename = path; + } + } + + if (kallsyms__parse(filename, &args, find_symbol_cb) <= 0) + return -ENOENT; + + map = machine->vmlinux_maps[MAP__FUNCTION]; + size = snprintf(ev.mmap.filename, sizeof(ev.mmap.filename), + "%s%s", mmap_name, symbol_name) + 1; + size = ALIGN(size, sizeof(u64)); + ev.mmap.header.size = (sizeof(ev.mmap) - + (sizeof(ev.mmap.filename) - size)); + ev.mmap.pgoff = args.start; + ev.mmap.start = map->start; + ev.mmap.len = map->end - ev.mmap.start; + ev.mmap.pid = machine->pid; + + return process(&ev, session); +} + static void thread__comm_adjust(struct thread *self) { char *comm = self->comm; @@ -219,9 +370,9 @@ static int thread__set_comm_adjust(struct thread *self, const char *comm) int event__process_comm(event_t *self, struct perf_session *session) { - struct thread *thread = perf_session__findnew(session, self->comm.pid); + struct thread *thread = perf_session__findnew(session, self->comm.tid); - dump_printf(": %s:%d\n", self->comm.comm, self->comm.pid); + dump_printf(": %s:%d\n", self->comm.comm, self->comm.tid); if (thread == NULL || thread__set_comm_adjust(thread, self->comm.comm)) { dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n"); @@ -234,46 +385,163 @@ int event__process_comm(event_t *self, struct perf_session *session) int event__process_lost(event_t *self, struct perf_session *session) { dump_printf(": id:%Ld: lost:%Ld\n", self->lost.id, self->lost.lost); - session->events_stats.lost += self->lost.lost; + session->hists.stats.total_lost += self->lost.lost; return 0; } +static void event_set_kernel_mmap_len(struct map **maps, event_t *self) +{ + maps[MAP__FUNCTION]->start = self->mmap.start; + maps[MAP__FUNCTION]->end = self->mmap.start + self->mmap.len; + /* + * Be a bit paranoid here, some perf.data file came with + * a zero sized synthesized MMAP event for the kernel. + */ + if (maps[MAP__FUNCTION]->end == 0) + maps[MAP__FUNCTION]->end = ~0UL; +} + +static int event__process_kernel_mmap(event_t *self, + struct perf_session *session) +{ + struct map *map; + char kmmap_prefix[PATH_MAX]; + struct machine *machine; + enum dso_kernel_type kernel_type; + bool is_kernel_mmap; + + machine = perf_session__findnew_machine(session, self->mmap.pid); + if (!machine) { + pr_err("Can't find id %d's machine\n", self->mmap.pid); + goto out_problem; + } + + machine__mmap_name(machine, kmmap_prefix, sizeof(kmmap_prefix)); + if (machine__is_host(machine)) + kernel_type = DSO_TYPE_KERNEL; + else + kernel_type = DSO_TYPE_GUEST_KERNEL; + + is_kernel_mmap = memcmp(self->mmap.filename, + kmmap_prefix, + strlen(kmmap_prefix)) == 0; + if (self->mmap.filename[0] == '/' || + (!is_kernel_mmap && self->mmap.filename[0] == '[')) { + + char short_module_name[1024]; + char *name, *dot; + + if (self->mmap.filename[0] == '/') { + name = strrchr(self->mmap.filename, '/'); + if (name == NULL) + goto out_problem; + + ++name; /* skip / */ + dot = strrchr(name, '.'); + if (dot == NULL) + goto out_problem; + snprintf(short_module_name, sizeof(short_module_name), + "[%.*s]", (int)(dot - name), name); + strxfrchar(short_module_name, '-', '_'); + } else + strcpy(short_module_name, self->mmap.filename); + + map = machine__new_module(machine, self->mmap.start, + self->mmap.filename); + if (map == NULL) + goto out_problem; + + name = strdup(short_module_name); + if (name == NULL) + goto out_problem; + + map->dso->short_name = name; + map->end = map->start + self->mmap.len; + } else if (is_kernel_mmap) { + const char *symbol_name = (self->mmap.filename + + strlen(kmmap_prefix)); + /* + * Should be there already, from the build-id table in + * the header. + */ + struct dso *kernel = __dsos__findnew(&machine->kernel_dsos, + kmmap_prefix); + if (kernel == NULL) + goto out_problem; + + kernel->kernel = kernel_type; + if (__machine__create_kernel_maps(machine, kernel) < 0) + goto out_problem; + + event_set_kernel_mmap_len(machine->vmlinux_maps, self); + perf_session__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps, + symbol_name, + self->mmap.pgoff); + if (machine__is_default_guest(machine)) { + /* + * preload dso of guest kernel and modules + */ + dso__load(kernel, machine->vmlinux_maps[MAP__FUNCTION], + NULL); + } + } + return 0; +out_problem: + return -1; +} + int event__process_mmap(event_t *self, struct perf_session *session) { - struct thread *thread = perf_session__findnew(session, self->mmap.pid); - struct map *map = map__new(&self->mmap, MAP__FUNCTION, - session->cwd, session->cwdlen); + struct machine *machine; + struct thread *thread; + struct map *map; + u8 cpumode = self->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; + int ret = 0; + + dump_printf(" %d/%d: [%#Lx(%#Lx) @ %#Lx]: %s\n", + self->mmap.pid, self->mmap.tid, self->mmap.start, + self->mmap.len, self->mmap.pgoff, self->mmap.filename); + + if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL || + cpumode == PERF_RECORD_MISC_KERNEL) { + ret = event__process_kernel_mmap(self, session); + if (ret < 0) + goto out_problem; + return 0; + } - dump_printf(" %d/%d: [%p(%p) @ %p]: %s\n", - self->mmap.pid, self->mmap.tid, - (void *)(long)self->mmap.start, - (void *)(long)self->mmap.len, - (void *)(long)self->mmap.pgoff, - self->mmap.filename); + machine = perf_session__find_host_machine(session); + if (machine == NULL) + goto out_problem; + thread = perf_session__findnew(session, self->mmap.pid); + map = map__new(&machine->user_dsos, self->mmap.start, + self->mmap.len, self->mmap.pgoff, + self->mmap.pid, self->mmap.filename, + MAP__FUNCTION, session->cwd, session->cwdlen); if (thread == NULL || map == NULL) - dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n"); - else - thread__insert_map(thread, map); + goto out_problem; + thread__insert_map(thread, map); + return 0; + +out_problem: + dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n"); return 0; } int event__process_task(event_t *self, struct perf_session *session) { - struct thread *thread = perf_session__findnew(session, self->fork.pid); - struct thread *parent = perf_session__findnew(session, self->fork.ppid); + struct thread *thread = perf_session__findnew(session, self->fork.tid); + struct thread *parent = perf_session__findnew(session, self->fork.ptid); dump_printf("(%d:%d):(%d:%d)\n", self->fork.pid, self->fork.tid, self->fork.ppid, self->fork.ptid); - /* - * A thread clone will have the same PID for both parent and child. - */ - if (thread == parent) - return 0; - if (self->header.type == PERF_RECORD_EXIT) + if (self->header.type == PERF_RECORD_EXIT) { + perf_session__remove_thread(session, thread); return 0; + } if (thread == NULL || parent == NULL || thread__fork(thread, parent) < 0) { @@ -284,26 +552,58 @@ int event__process_task(event_t *self, struct perf_session *session) return 0; } -void thread__find_addr_location(struct thread *self, - struct perf_session *session, u8 cpumode, - enum map_type type, u64 addr, - struct addr_location *al, - symbol_filter_t filter) +void thread__find_addr_map(struct thread *self, + struct perf_session *session, u8 cpumode, + enum map_type type, pid_t pid, u64 addr, + struct addr_location *al) { struct map_groups *mg = &self->mg; + struct machine *machine = NULL; al->thread = self; al->addr = addr; + al->cpumode = cpumode; + al->filtered = false; - if (cpumode & PERF_RECORD_MISC_KERNEL) { + if (cpumode == PERF_RECORD_MISC_KERNEL && perf_host) { al->level = 'k'; - mg = &session->kmaps; - } else if (cpumode & PERF_RECORD_MISC_USER) + machine = perf_session__find_host_machine(session); + if (machine == NULL) { + al->map = NULL; + return; + } + mg = &machine->kmaps; + } else if (cpumode == PERF_RECORD_MISC_USER && perf_host) { al->level = '.'; - else { - al->level = 'H'; + machine = perf_session__find_host_machine(session); + } else if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL && perf_guest) { + al->level = 'g'; + machine = perf_session__find_machine(session, pid); + if (machine == NULL) { + al->map = NULL; + return; + } + mg = &machine->kmaps; + } else { + /* + * 'u' means guest os user space. + * TODO: We don't support guest user space. Might support late. + */ + if (cpumode == PERF_RECORD_MISC_GUEST_USER && perf_guest) + al->level = 'u'; + else + al->level = 'H'; al->map = NULL; - al->sym = NULL; + + if ((cpumode == PERF_RECORD_MISC_GUEST_USER || + cpumode == PERF_RECORD_MISC_GUEST_KERNEL) && + !perf_guest) + al->filtered = true; + if ((cpumode == PERF_RECORD_MISC_USER || + cpumode == PERF_RECORD_MISC_KERNEL) && + !perf_host) + al->filtered = true; + return; } try_again: @@ -318,15 +618,27 @@ try_again: * "[vdso]" dso, but for now lets use the old trick of looking * in the whole kernel symbol list. */ - if ((long long)al->addr < 0 && mg != &session->kmaps) { - mg = &session->kmaps; + if ((long long)al->addr < 0 && + cpumode == PERF_RECORD_MISC_KERNEL && + machine && mg != &machine->kmaps) { + mg = &machine->kmaps; goto try_again; } - al->sym = NULL; - } else { + } else al->addr = al->map->map_ip(al->map, al->addr); - al->sym = map__find_symbol(al->map, session, al->addr, filter); - } +} + +void thread__find_addr_location(struct thread *self, + struct perf_session *session, u8 cpumode, + enum map_type type, pid_t pid, u64 addr, + struct addr_location *al, + symbol_filter_t filter) +{ + thread__find_addr_map(self, session, cpumode, type, pid, addr, al); + if (al->map != NULL) + al->sym = map__find_symbol(al->map, al->addr, filter); + else + al->sym = NULL; } static void dso__calc_col_width(struct dso *self) @@ -334,8 +646,10 @@ static void dso__calc_col_width(struct dso *self) if (!symbol_conf.col_width_list_str && !symbol_conf.field_sep && (!symbol_conf.dso_list || strlist__has_entry(symbol_conf.dso_list, self->name))) { - unsigned int slen = strlen(self->name); - if (slen > dsos__col_width) + u16 slen = self->short_name_len; + if (verbose) + slen = self->long_name_len; + if (dsos__col_width < slen) dsos__col_width = slen; } @@ -356,31 +670,55 @@ int event__preprocess_sample(const event_t *self, struct perf_session *session, goto out_filtered; dump_printf(" ... thread: %s:%d\n", thread->comm, thread->pid); + /* + * Have we already created the kernel maps for the host machine? + * + * This should have happened earlier, when we processed the kernel MMAP + * events, but for older perf.data files there was no such thing, so do + * it now. + */ + if (cpumode == PERF_RECORD_MISC_KERNEL && + session->host_machine.vmlinux_maps[MAP__FUNCTION] == NULL) + machine__create_kernel_maps(&session->host_machine); - thread__find_addr_location(thread, session, cpumode, MAP__FUNCTION, - self->ip.ip, al, filter); + thread__find_addr_map(thread, session, cpumode, MAP__FUNCTION, + self->ip.pid, self->ip.ip, al); dump_printf(" ...... dso: %s\n", al->map ? al->map->dso->long_name : al->level == 'H' ? "[hypervisor]" : "<not found>"); - /* - * We have to do this here as we may have a dso with no symbol hit that - * has a name longer than the ones with symbols sampled. - */ - if (al->map && !sort_dso.elide && !al->map->dso->slen_calculated) - dso__calc_col_width(al->map->dso); - - if (symbol_conf.dso_list && - (!al->map || !al->map->dso || - !(strlist__has_entry(symbol_conf.dso_list, al->map->dso->short_name) || - (al->map->dso->short_name != al->map->dso->long_name && - strlist__has_entry(symbol_conf.dso_list, al->map->dso->long_name))))) - goto out_filtered; + al->sym = NULL; + + if (al->map) { + if (symbol_conf.dso_list && + (!al->map || !al->map->dso || + !(strlist__has_entry(symbol_conf.dso_list, + al->map->dso->short_name) || + (al->map->dso->short_name != al->map->dso->long_name && + strlist__has_entry(symbol_conf.dso_list, + al->map->dso->long_name))))) + goto out_filtered; + /* + * We have to do this here as we may have a dso with no symbol + * hit that has a name longer than the ones with symbols + * sampled. + */ + if (!sort_dso.elide && !al->map->dso->slen_calculated) + dso__calc_col_width(al->map->dso); + + al->sym = map__find_symbol(al->map, al->addr, filter); + } else { + const unsigned int unresolved_col_width = BITS_PER_LONG / 4; + + if (dsos__col_width < unresolved_col_width && + !symbol_conf.col_width_list_str && !symbol_conf.field_sep && + !symbol_conf.dso_list) + dsos__col_width = unresolved_col_width; + } if (symbol_conf.sym_list && al->sym && !strlist__has_entry(symbol_conf.sym_list, al->sym->name)) goto out_filtered; - al->filtered = false; return 0; out_filtered: @@ -414,6 +752,7 @@ int event__parse_sample(event_t *event, u64 type, struct sample_data *data) array++; } + data->id = -1ULL; if (type & PERF_SAMPLE_ID) { data->id = *array; array++; diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h index 690a96d0467c..8577085db067 100644 --- a/tools/perf/util/event.h +++ b/tools/perf/util/event.h @@ -1,10 +1,10 @@ #ifndef __PERF_RECORD_H #define __PERF_RECORD_H +#include <limits.h> + #include "../perf.h" -#include "util.h" -#include <linux/list.h> -#include <linux/rbtree.h> +#include "map.h" /* * PERF_SAMPLE_IP | PERF_SAMPLE_TID | * @@ -68,21 +68,54 @@ struct sample_data { u64 addr; u64 id; u64 stream_id; - u32 cpu; u64 period; - struct ip_callchain *callchain; + u32 cpu; u32 raw_size; void *raw_data; + struct ip_callchain *callchain; }; #define BUILD_ID_SIZE 20 struct build_id_event { struct perf_event_header header; + pid_t pid; u8 build_id[ALIGN(BUILD_ID_SIZE, sizeof(u64))]; char filename[]; }; +enum perf_user_event_type { /* above any possible kernel type */ + PERF_RECORD_HEADER_ATTR = 64, + PERF_RECORD_HEADER_EVENT_TYPE = 65, + PERF_RECORD_HEADER_TRACING_DATA = 66, + PERF_RECORD_HEADER_BUILD_ID = 67, + PERF_RECORD_FINISHED_ROUND = 68, + PERF_RECORD_HEADER_MAX +}; + +struct attr_event { + struct perf_event_header header; + struct perf_event_attr attr; + u64 id[]; +}; + +#define MAX_EVENT_NAME 64 + +struct perf_trace_event_type { + u64 event_id; + char name[MAX_EVENT_NAME]; +}; + +struct event_type_event { + struct perf_event_header header; + struct perf_trace_event_type event_type; +}; + +struct tracing_data_event { + struct perf_event_header header; + u32 size; +}; + typedef union event_union { struct perf_event_header header; struct ip_event ip; @@ -92,83 +125,30 @@ typedef union event_union { struct lost_event lost; struct read_event read; struct sample_event sample; + struct attr_event attr; + struct event_type_event event_type; + struct tracing_data_event tracing_data; + struct build_id_event build_id; } event_t; -struct events_stats { - u64 total; - u64 lost; -}; - void event__print_totals(void); -enum map_type { - MAP__FUNCTION = 0, - MAP__VARIABLE, -}; - -#define MAP__NR_TYPES (MAP__VARIABLE + 1) - -struct map { - union { - struct rb_node rb_node; - struct list_head node; - }; - u64 start; - u64 end; - enum map_type type; - u64 pgoff; - u64 (*map_ip)(struct map *, u64); - u64 (*unmap_ip)(struct map *, u64); - struct dso *dso; -}; - -static inline u64 map__map_ip(struct map *map, u64 ip) -{ - return ip - map->start + map->pgoff; -} - -static inline u64 map__unmap_ip(struct map *map, u64 ip) -{ - return ip + map->start - map->pgoff; -} - -static inline u64 identity__map_ip(struct map *map __used, u64 ip) -{ - return ip; -} - -struct symbol; - -typedef int (*symbol_filter_t)(struct map *map, struct symbol *sym); - -void map__init(struct map *self, enum map_type type, - u64 start, u64 end, u64 pgoff, struct dso *dso); -struct map *map__new(struct mmap_event *event, enum map_type, - char *cwd, int cwdlen); -void map__delete(struct map *self); -struct map *map__clone(struct map *self); -int map__overlap(struct map *l, struct map *r); -size_t map__fprintf(struct map *self, FILE *fp); - struct perf_session; -int map__load(struct map *self, struct perf_session *session, - symbol_filter_t filter); -struct symbol *map__find_symbol(struct map *self, struct perf_session *session, - u64 addr, symbol_filter_t filter); -struct symbol *map__find_symbol_by_name(struct map *self, const char *name, - struct perf_session *session, - symbol_filter_t filter); -void map__fixup_start(struct map *self); -void map__fixup_end(struct map *self); - -int event__synthesize_thread(pid_t pid, - int (*process)(event_t *event, - struct perf_session *session), +typedef int (*event__handler_t)(event_t *event, struct perf_session *session); + +int event__synthesize_thread(pid_t pid, event__handler_t process, struct perf_session *session); -void event__synthesize_threads(int (*process)(event_t *event, - struct perf_session *session), +void event__synthesize_threads(event__handler_t process, struct perf_session *session); +int event__synthesize_kernel_mmap(event__handler_t process, + struct perf_session *session, + struct machine *machine, + const char *symbol_name); + +int event__synthesize_modules(event__handler_t process, + struct perf_session *session, + struct machine *machine); int event__process_comm(event_t *self, struct perf_session *session); int event__process_lost(event_t *self, struct perf_session *session); @@ -180,4 +160,6 @@ int event__preprocess_sample(const event_t *self, struct perf_session *session, struct addr_location *al, symbol_filter_t filter); int event__parse_sample(event_t *event, u64 type, struct sample_data *data); +extern const char *event__name[]; + #endif /* __PERF_RECORD_H */ diff --git a/tools/perf/util/exec_cmd.c b/tools/perf/util/exec_cmd.c index 2745605dba11..67eeff571568 100644 --- a/tools/perf/util/exec_cmd.c +++ b/tools/perf/util/exec_cmd.c @@ -53,8 +53,8 @@ const char *perf_extract_argv0_path(const char *argv0) slash--; if (slash >= argv0) { - argv0_path = xstrndup(argv0, slash - argv0); - return slash + 1; + argv0_path = strndup(argv0, slash - argv0); + return argv0_path ? slash + 1 : NULL; } return argv0; @@ -116,7 +116,7 @@ void setup_path(void) strbuf_release(&new_path); } -const char **prepare_perf_cmd(const char **argv) +static const char **prepare_perf_cmd(const char **argv) { int argc; const char **nargv; diff --git a/tools/perf/util/exec_cmd.h b/tools/perf/util/exec_cmd.h index 31647ac92ed1..bc4b915963f5 100644 --- a/tools/perf/util/exec_cmd.h +++ b/tools/perf/util/exec_cmd.h @@ -5,7 +5,6 @@ extern void perf_set_argv_exec_path(const char *exec_path); extern const char *perf_extract_argv0_path(const char *path); extern const char *perf_exec_path(void); extern void setup_path(void); -extern const char **prepare_perf_cmd(const char **argv); extern int execv_perf_cmd(const char **argv); /* NULL terminated */ extern int execl_perf_cmd(const char *cmd, ...); extern const char *system_path(const char *path); diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index 8a0bca55106f..1f62435f96c2 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -1,8 +1,12 @@ +#define _FILE_OFFSET_BITS 64 + #include <sys/types.h> +#include <byteswap.h> #include <unistd.h> #include <stdio.h> #include <stdlib.h> #include <linux/list.h> +#include <linux/kernel.h> #include "util.h" #include "header.h" @@ -95,34 +99,31 @@ int perf_header__add_attr(struct perf_header *self, return 0; } -#define MAX_EVENT_NAME 64 - -struct perf_trace_event_type { - u64 event_id; - char name[MAX_EVENT_NAME]; -}; - static int event_count; static struct perf_trace_event_type *events; -void perf_header__push_event(u64 id, const char *name) +int perf_header__push_event(u64 id, const char *name) { if (strlen(name) > MAX_EVENT_NAME) pr_warning("Event %s will be truncated\n", name); if (!events) { events = malloc(sizeof(struct perf_trace_event_type)); - if (!events) - die("nomem"); + if (events == NULL) + return -ENOMEM; } else { - events = realloc(events, (event_count + 1) * sizeof(struct perf_trace_event_type)); - if (!events) - die("nomem"); + struct perf_trace_event_type *nevents; + + nevents = realloc(events, (event_count + 1) * sizeof(*events)); + if (nevents == NULL) + return -ENOMEM; + events = nevents; } memset(&events[event_count], 0, sizeof(struct perf_trace_event_type)); events[event_count].event_id = id; strncpy(events[event_count].name, name, MAX_EVENT_NAME - 1); event_count++; + return 0; } char *perf_header__find_event(u64 id) @@ -169,31 +170,50 @@ static int do_write(int fd, const void *buf, size_t size) return 0; } -static int __dsos__write_buildid_table(struct list_head *head, int fd) +#define NAME_ALIGN 64 + +static int write_padded(int fd, const void *bf, size_t count, + size_t count_aligned) { -#define NAME_ALIGN 64 - struct dso *pos; static const char zero_buf[NAME_ALIGN]; + int err = do_write(fd, bf, count); + + if (!err) + err = do_write(fd, zero_buf, count_aligned - count); - list_for_each_entry(pos, head, node) { + return err; +} + +#define dsos__for_each_with_build_id(pos, head) \ + list_for_each_entry(pos, head, node) \ + if (!pos->has_build_id) \ + continue; \ + else + +static int __dsos__write_buildid_table(struct list_head *head, pid_t pid, + u16 misc, int fd) +{ + struct dso *pos; + + dsos__for_each_with_build_id(pos, head) { int err; struct build_id_event b; size_t len; - if (!pos->has_build_id) + if (!pos->hit) continue; len = pos->long_name_len + 1; len = ALIGN(len, NAME_ALIGN); memset(&b, 0, sizeof(b)); memcpy(&b.build_id, pos->build_id, sizeof(pos->build_id)); + b.pid = pid; + b.header.misc = misc; b.header.size = sizeof(b) + len; err = do_write(fd, &b, sizeof(b)); if (err < 0) return err; - err = do_write(fd, pos->long_name, pos->long_name_len + 1); - if (err < 0) - return err; - err = do_write(fd, zero_buf, len - pos->long_name_len - 1); + err = write_padded(fd, pos->long_name, + pos->long_name_len + 1, len); if (err < 0) return err; } @@ -201,23 +221,216 @@ static int __dsos__write_buildid_table(struct list_head *head, int fd) return 0; } -static int dsos__write_buildid_table(int fd) +static int machine__write_buildid_table(struct machine *self, int fd) { - int err = __dsos__write_buildid_table(&dsos__kernel, fd); + int err; + u16 kmisc = PERF_RECORD_MISC_KERNEL, + umisc = PERF_RECORD_MISC_USER; + + if (!machine__is_host(self)) { + kmisc = PERF_RECORD_MISC_GUEST_KERNEL; + umisc = PERF_RECORD_MISC_GUEST_USER; + } + + err = __dsos__write_buildid_table(&self->kernel_dsos, self->pid, + kmisc, fd); if (err == 0) - err = __dsos__write_buildid_table(&dsos__user, fd); + err = __dsos__write_buildid_table(&self->user_dsos, + self->pid, umisc, fd); + return err; +} + +static int dsos__write_buildid_table(struct perf_header *header, int fd) +{ + struct perf_session *session = container_of(header, + struct perf_session, header); + struct rb_node *nd; + int err = machine__write_buildid_table(&session->host_machine, fd); + + if (err) + return err; + + for (nd = rb_first(&session->machines); nd; nd = rb_next(nd)) { + struct machine *pos = rb_entry(nd, struct machine, rb_node); + err = machine__write_buildid_table(pos, fd); + if (err) + break; + } + return err; +} + +int build_id_cache__add_s(const char *sbuild_id, const char *debugdir, + const char *name, bool is_kallsyms) +{ + const size_t size = PATH_MAX; + char *filename = malloc(size), + *linkname = malloc(size), *targetname; + int len, err = -1; + + if (filename == NULL || linkname == NULL) + goto out_free; + + len = snprintf(filename, size, "%s%s%s", + debugdir, is_kallsyms ? "/" : "", name); + if (mkdir_p(filename, 0755)) + goto out_free; + + snprintf(filename + len, sizeof(filename) - len, "/%s", sbuild_id); + + if (access(filename, F_OK)) { + if (is_kallsyms) { + if (copyfile("/proc/kallsyms", filename)) + goto out_free; + } else if (link(name, filename) && copyfile(name, filename)) + goto out_free; + } + + len = snprintf(linkname, size, "%s/.build-id/%.2s", + debugdir, sbuild_id); + + if (access(linkname, X_OK) && mkdir_p(linkname, 0755)) + goto out_free; + + snprintf(linkname + len, size - len, "/%s", sbuild_id + 2); + targetname = filename + strlen(debugdir) - 5; + memcpy(targetname, "../..", 5); + + if (symlink(targetname, linkname) == 0) + err = 0; +out_free: + free(filename); + free(linkname); + return err; +} + +static int build_id_cache__add_b(const u8 *build_id, size_t build_id_size, + const char *name, const char *debugdir, + bool is_kallsyms) +{ + char sbuild_id[BUILD_ID_SIZE * 2 + 1]; + + build_id__sprintf(build_id, build_id_size, sbuild_id); + + return build_id_cache__add_s(sbuild_id, debugdir, name, is_kallsyms); +} + +int build_id_cache__remove_s(const char *sbuild_id, const char *debugdir) +{ + const size_t size = PATH_MAX; + char *filename = malloc(size), + *linkname = malloc(size); + int err = -1; + + if (filename == NULL || linkname == NULL) + goto out_free; + + snprintf(linkname, size, "%s/.build-id/%.2s/%s", + debugdir, sbuild_id, sbuild_id + 2); + + if (access(linkname, F_OK)) + goto out_free; + + if (readlink(linkname, filename, size) < 0) + goto out_free; + + if (unlink(linkname)) + goto out_free; + + /* + * Since the link is relative, we must make it absolute: + */ + snprintf(linkname, size, "%s/.build-id/%.2s/%s", + debugdir, sbuild_id, filename); + + if (unlink(linkname)) + goto out_free; + + err = 0; +out_free: + free(filename); + free(linkname); + return err; +} + +static int dso__cache_build_id(struct dso *self, const char *debugdir) +{ + bool is_kallsyms = self->kernel && self->long_name[0] != '/'; + + return build_id_cache__add_b(self->build_id, sizeof(self->build_id), + self->long_name, debugdir, is_kallsyms); +} + +static int __dsos__cache_build_ids(struct list_head *head, const char *debugdir) +{ + struct dso *pos; + int err = 0; + + dsos__for_each_with_build_id(pos, head) + if (dso__cache_build_id(pos, debugdir)) + err = -1; + return err; } +static int machine__cache_build_ids(struct machine *self, const char *debugdir) +{ + int ret = __dsos__cache_build_ids(&self->kernel_dsos, debugdir); + ret |= __dsos__cache_build_ids(&self->user_dsos, debugdir); + return ret; +} + +static int perf_session__cache_build_ids(struct perf_session *self) +{ + struct rb_node *nd; + int ret; + char debugdir[PATH_MAX]; + + snprintf(debugdir, sizeof(debugdir), "%s/%s", getenv("HOME"), + DEBUG_CACHE_DIR); + + if (mkdir(debugdir, 0755) != 0 && errno != EEXIST) + return -1; + + ret = machine__cache_build_ids(&self->host_machine, debugdir); + + for (nd = rb_first(&self->machines); nd; nd = rb_next(nd)) { + struct machine *pos = rb_entry(nd, struct machine, rb_node); + ret |= machine__cache_build_ids(pos, debugdir); + } + return ret ? -1 : 0; +} + +static bool machine__read_build_ids(struct machine *self, bool with_hits) +{ + bool ret = __dsos__read_build_ids(&self->kernel_dsos, with_hits); + ret |= __dsos__read_build_ids(&self->user_dsos, with_hits); + return ret; +} + +static bool perf_session__read_build_ids(struct perf_session *self, bool with_hits) +{ + struct rb_node *nd; + bool ret = machine__read_build_ids(&self->host_machine, with_hits); + + for (nd = rb_first(&self->machines); nd; nd = rb_next(nd)) { + struct machine *pos = rb_entry(nd, struct machine, rb_node); + ret |= machine__read_build_ids(pos, with_hits); + } + + return ret; +} + static int perf_header__adds_write(struct perf_header *self, int fd) { int nr_sections; + struct perf_session *session; struct perf_file_section *feat_sec; int sec_size; u64 sec_start; int idx = 0, err; - if (dsos__read_build_ids()) + session = container_of(self, struct perf_session, header); + if (perf_session__read_build_ids(session, true)) perf_header__set_feat(self, HEADER_BUILD_ID); nr_sections = bitmap_weight(self->adds_features, HEADER_FEAT_BITS); @@ -244,7 +457,6 @@ static int perf_header__adds_write(struct perf_header *self, int fd) trace_sec->size = lseek(fd, 0, SEEK_CUR) - trace_sec->offset; } - if (perf_header__has_feat(self, HEADER_BUILD_ID)) { struct perf_file_section *buildid_sec; @@ -252,12 +464,14 @@ static int perf_header__adds_write(struct perf_header *self, int fd) /* Write build-ids */ buildid_sec->offset = lseek(fd, 0, SEEK_CUR); - err = dsos__write_buildid_table(fd); + err = dsos__write_buildid_table(self, fd); if (err < 0) { pr_debug("failed to write buildid table\n"); goto out_free; } - buildid_sec->size = lseek(fd, 0, SEEK_CUR) - buildid_sec->offset; + buildid_sec->size = lseek(fd, 0, SEEK_CUR) - + buildid_sec->offset; + perf_session__cache_build_ids(session); } lseek(fd, sec_start, SEEK_SET); @@ -269,6 +483,25 @@ out_free: return err; } +int perf_header__write_pipe(int fd) +{ + struct perf_pipe_file_header f_header; + int err; + + f_header = (struct perf_pipe_file_header){ + .magic = PERF_MAGIC, + .size = sizeof(f_header), + }; + + err = do_write(fd, &f_header, sizeof(f_header)); + if (err < 0) { + pr_debug("failed to write perf pipe header\n"); + return err; + } + + return 0; +} + int perf_header__write(struct perf_header *self, int fd, bool at_exit) { struct perf_file_header f_header; @@ -278,7 +511,6 @@ int perf_header__write(struct perf_header *self, int fd, bool at_exit) lseek(fd, sizeof(f_header), SEEK_SET); - for (i = 0; i < self->attrs; i++) { attr = self->attr[i]; @@ -360,30 +592,28 @@ int perf_header__write(struct perf_header *self, int fd, bool at_exit) return 0; } -static void do_read(int fd, void *buf, size_t size) +static int perf_header__getbuffer64(struct perf_header *self, + int fd, void *buf, size_t size) { - while (size) { - int ret = read(fd, buf, size); + if (do_read(fd, buf, size) <= 0) + return -1; - if (ret < 0) - die("failed to read"); - if (ret == 0) - die("failed to read: missing data"); + if (self->needs_swap) + mem_bswap_64(buf, size); - size -= ret; - buf += ret; - } + return 0; } int perf_header__process_sections(struct perf_header *self, int fd, int (*process)(struct perf_file_section *self, + struct perf_header *ph, int feat, int fd)) { struct perf_file_section *feat_sec; int nr_sections; int sec_size; int idx = 0; - int err = 0, feat = 1; + int err = -1, feat = 1; nr_sections = bitmap_weight(self->adds_features, HEADER_FEAT_BITS); if (!nr_sections) @@ -397,33 +627,45 @@ int perf_header__process_sections(struct perf_header *self, int fd, lseek(fd, self->data_offset + self->data_size, SEEK_SET); - do_read(fd, feat_sec, sec_size); + if (perf_header__getbuffer64(self, fd, feat_sec, sec_size)) + goto out_free; + err = 0; while (idx < nr_sections && feat < HEADER_LAST_FEATURE) { if (perf_header__has_feat(self, feat)) { struct perf_file_section *sec = &feat_sec[idx++]; - err = process(sec, feat, fd); + err = process(sec, self, feat, fd); if (err < 0) break; } ++feat; } - +out_free: free(feat_sec); return err; -}; +} int perf_file_header__read(struct perf_file_header *self, struct perf_header *ph, int fd) { lseek(fd, 0, SEEK_SET); - do_read(fd, self, sizeof(*self)); - if (self->magic != PERF_MAGIC || - self->attr_size != sizeof(struct perf_file_attr)) + if (do_read(fd, self, sizeof(*self)) <= 0 || + memcmp(&self->magic, __perf_magic, sizeof(self->magic))) return -1; + if (self->attr_size != sizeof(struct perf_file_attr)) { + u64 attr_size = bswap_64(self->attr_size); + + if (attr_size != sizeof(struct perf_file_attr)) + return -1; + + mem_bswap_64(self, offsetof(struct perf_file_header, + adds_features)); + ph->needs_swap = true; + } + if (self->size != sizeof(*self)) { /* Support the previous format */ if (self->size == offsetof(typeof(*self), adds_features)) @@ -433,19 +675,118 @@ int perf_file_header__read(struct perf_file_header *self, } memcpy(&ph->adds_features, &self->adds_features, - sizeof(self->adds_features)); + sizeof(ph->adds_features)); + /* + * FIXME: hack that assumes that if we need swap the perf.data file + * may be coming from an arch with a different word-size, ergo different + * DEFINE_BITMAP format, investigate more later, but for now its mostly + * safe to assume that we have a build-id section. Trace files probably + * have several other issues in this realm anyway... + */ + if (ph->needs_swap) { + memset(&ph->adds_features, 0, sizeof(ph->adds_features)); + perf_header__set_feat(ph, HEADER_BUILD_ID); + } ph->event_offset = self->event_types.offset; - ph->event_size = self->event_types.size; - ph->data_offset = self->data.offset; + ph->event_size = self->event_types.size; + ph->data_offset = self->data.offset; ph->data_size = self->data.size; return 0; } +static int __event_process_build_id(struct build_id_event *bev, + char *filename, + struct perf_session *session) +{ + int err = -1; + struct list_head *head; + struct machine *machine; + u16 misc; + struct dso *dso; + enum dso_kernel_type dso_type; + + machine = perf_session__findnew_machine(session, bev->pid); + if (!machine) + goto out; + + misc = bev->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; + + switch (misc) { + case PERF_RECORD_MISC_KERNEL: + dso_type = DSO_TYPE_KERNEL; + head = &machine->kernel_dsos; + break; + case PERF_RECORD_MISC_GUEST_KERNEL: + dso_type = DSO_TYPE_GUEST_KERNEL; + head = &machine->kernel_dsos; + break; + case PERF_RECORD_MISC_USER: + case PERF_RECORD_MISC_GUEST_USER: + dso_type = DSO_TYPE_USER; + head = &machine->user_dsos; + break; + default: + goto out; + } + + dso = __dsos__findnew(head, filename); + if (dso != NULL) { + char sbuild_id[BUILD_ID_SIZE * 2 + 1]; + + dso__set_build_id(dso, &bev->build_id); + + if (filename[0] == '[') + dso->kernel = dso_type; + + build_id__sprintf(dso->build_id, sizeof(dso->build_id), + sbuild_id); + pr_debug("build id event received for %s: %s\n", + dso->long_name, sbuild_id); + } + + err = 0; +out: + return err; +} + +static int perf_header__read_build_ids(struct perf_header *self, + int input, u64 offset, u64 size) +{ + struct perf_session *session = container_of(self, + struct perf_session, header); + struct build_id_event bev; + char filename[PATH_MAX]; + u64 limit = offset + size; + int err = -1; + + while (offset < limit) { + ssize_t len; + + if (read(input, &bev, sizeof(bev)) != sizeof(bev)) + goto out; + + if (self->needs_swap) + perf_event_header__bswap(&bev.header); + + len = bev.header.size - sizeof(bev); + if (read(input, filename, len) != len) + goto out; + + __event_process_build_id(&bev, filename, session); + + offset += bev.header.size; + } + err = 0; +out: + return err; +} + static int perf_file_section__process(struct perf_file_section *self, + struct perf_header *ph, int feat, int fd) { - if (lseek(fd, self->offset, SEEK_SET) < 0) { + if (lseek(fd, self->offset, SEEK_SET) == (off_t)-1) { pr_debug("Failed to lseek to %Ld offset for feature %d, " "continuing...\n", self->offset, feat); return 0; @@ -453,11 +794,11 @@ static int perf_file_section__process(struct perf_file_section *self, switch (feat) { case HEADER_TRACE_INFO: - trace_report(fd); + trace_report(fd, false); break; case HEADER_BUILD_ID: - if (perf_header__read_build_ids(fd, self->offset, self->size)) + if (perf_header__read_build_ids(ph, fd, self->offset, self->size)) pr_debug("Failed to read buildids, continuing...\n"); break; default: @@ -467,13 +808,56 @@ static int perf_file_section__process(struct perf_file_section *self, return 0; } -int perf_header__read(struct perf_header *self, int fd) +static int perf_file_header__read_pipe(struct perf_pipe_file_header *self, + struct perf_header *ph, int fd, + bool repipe) { - struct perf_file_header f_header; + if (do_read(fd, self, sizeof(*self)) <= 0 || + memcmp(&self->magic, __perf_magic, sizeof(self->magic))) + return -1; + + if (repipe && do_write(STDOUT_FILENO, self, sizeof(*self)) < 0) + return -1; + + if (self->size != sizeof(*self)) { + u64 size = bswap_64(self->size); + + if (size != sizeof(*self)) + return -1; + + ph->needs_swap = true; + } + + return 0; +} + +static int perf_header__read_pipe(struct perf_session *session, int fd) +{ + struct perf_header *self = &session->header; + struct perf_pipe_file_header f_header; + + if (perf_file_header__read_pipe(&f_header, self, fd, + session->repipe) < 0) { + pr_debug("incompatible file format\n"); + return -EINVAL; + } + + session->fd = fd; + + return 0; +} + +int perf_header__read(struct perf_session *session, int fd) +{ + struct perf_header *self = &session->header; + struct perf_file_header f_header; struct perf_file_attr f_attr; u64 f_id; int nr_attrs, nr_ids, i, j; + if (session->fd_pipe) + return perf_header__read_pipe(session, fd); + if (perf_file_header__read(&f_header, self, fd) < 0) { pr_debug("incompatible file format\n"); return -EINVAL; @@ -486,7 +870,9 @@ int perf_header__read(struct perf_header *self, int fd) struct perf_header_attr *attr; off_t tmp; - do_read(fd, &f_attr, sizeof(f_attr)); + if (perf_header__getbuffer64(self, fd, &f_attr, sizeof(f_attr))) + goto out_errno; + tmp = lseek(fd, 0, SEEK_CUR); attr = perf_header_attr__new(&f_attr.attr); @@ -497,7 +883,8 @@ int perf_header__read(struct perf_header *self, int fd) lseek(fd, f_attr.ids.offset, SEEK_SET); for (j = 0; j < nr_ids; j++) { - do_read(fd, &f_id, sizeof(f_id)); + if (perf_header__getbuffer64(self, fd, &f_id, sizeof(f_id))) + goto out_errno; if (perf_header_attr__add_id(attr, f_id) < 0) { perf_header_attr__delete(attr); @@ -517,7 +904,9 @@ int perf_header__read(struct perf_header *self, int fd) events = malloc(f_header.event_types.size); if (events == NULL) return -ENOMEM; - do_read(fd, events, f_header.event_types.size); + if (perf_header__getbuffer64(self, fd, events, + f_header.event_types.size)) + goto out_errno; event_count = f_header.event_types.size / sizeof(struct perf_trace_event_type); } @@ -527,6 +916,8 @@ int perf_header__read(struct perf_header *self, int fd) self->frozen = 1; return 0; +out_errno: + return -errno; } u64 perf_header__sample_type(struct perf_header *header) @@ -551,6 +942,14 @@ perf_header__find_attr(u64 id, struct perf_header *header) { int i; + /* + * We set id to -1 if the data file doesn't contain sample + * ids. Check for this and avoid walking through the entire + * list of ids which may be large. + */ + if (id == -1ULL) + return NULL; + for (i = 0; i < header->attrs; i++) { struct perf_header_attr *attr = header->attr[i]; int j; @@ -563,3 +962,231 @@ perf_header__find_attr(u64 id, struct perf_header *header) return NULL; } + +int event__synthesize_attr(struct perf_event_attr *attr, u16 ids, u64 *id, + event__handler_t process, + struct perf_session *session) +{ + event_t *ev; + size_t size; + int err; + + size = sizeof(struct perf_event_attr); + size = ALIGN(size, sizeof(u64)); + size += sizeof(struct perf_event_header); + size += ids * sizeof(u64); + + ev = malloc(size); + + ev->attr.attr = *attr; + memcpy(ev->attr.id, id, ids * sizeof(u64)); + + ev->attr.header.type = PERF_RECORD_HEADER_ATTR; + ev->attr.header.size = size; + + err = process(ev, session); + + free(ev); + + return err; +} + +int event__synthesize_attrs(struct perf_header *self, + event__handler_t process, + struct perf_session *session) +{ + struct perf_header_attr *attr; + int i, err = 0; + + for (i = 0; i < self->attrs; i++) { + attr = self->attr[i]; + + err = event__synthesize_attr(&attr->attr, attr->ids, attr->id, + process, session); + if (err) { + pr_debug("failed to create perf header attribute\n"); + return err; + } + } + + return err; +} + +int event__process_attr(event_t *self, struct perf_session *session) +{ + struct perf_header_attr *attr; + unsigned int i, ids, n_ids; + + attr = perf_header_attr__new(&self->attr.attr); + if (attr == NULL) + return -ENOMEM; + + ids = self->header.size; + ids -= (void *)&self->attr.id - (void *)self; + n_ids = ids / sizeof(u64); + + for (i = 0; i < n_ids; i++) { + if (perf_header_attr__add_id(attr, self->attr.id[i]) < 0) { + perf_header_attr__delete(attr); + return -ENOMEM; + } + } + + if (perf_header__add_attr(&session->header, attr) < 0) { + perf_header_attr__delete(attr); + return -ENOMEM; + } + + perf_session__update_sample_type(session); + + return 0; +} + +int event__synthesize_event_type(u64 event_id, char *name, + event__handler_t process, + struct perf_session *session) +{ + event_t ev; + size_t size = 0; + int err = 0; + + memset(&ev, 0, sizeof(ev)); + + ev.event_type.event_type.event_id = event_id; + memset(ev.event_type.event_type.name, 0, MAX_EVENT_NAME); + strncpy(ev.event_type.event_type.name, name, MAX_EVENT_NAME - 1); + + ev.event_type.header.type = PERF_RECORD_HEADER_EVENT_TYPE; + size = strlen(name); + size = ALIGN(size, sizeof(u64)); + ev.event_type.header.size = sizeof(ev.event_type) - + (sizeof(ev.event_type.event_type.name) - size); + + err = process(&ev, session); + + return err; +} + +int event__synthesize_event_types(event__handler_t process, + struct perf_session *session) +{ + struct perf_trace_event_type *type; + int i, err = 0; + + for (i = 0; i < event_count; i++) { + type = &events[i]; + + err = event__synthesize_event_type(type->event_id, type->name, + process, session); + if (err) { + pr_debug("failed to create perf header event type\n"); + return err; + } + } + + return err; +} + +int event__process_event_type(event_t *self, + struct perf_session *session __unused) +{ + if (perf_header__push_event(self->event_type.event_type.event_id, + self->event_type.event_type.name) < 0) + return -ENOMEM; + + return 0; +} + +int event__synthesize_tracing_data(int fd, struct perf_event_attr *pattrs, + int nb_events, + event__handler_t process, + struct perf_session *session __unused) +{ + event_t ev; + ssize_t size = 0, aligned_size = 0, padding; + int err = 0; + + memset(&ev, 0, sizeof(ev)); + + ev.tracing_data.header.type = PERF_RECORD_HEADER_TRACING_DATA; + size = read_tracing_data_size(fd, pattrs, nb_events); + if (size <= 0) + return size; + aligned_size = ALIGN(size, sizeof(u64)); + padding = aligned_size - size; + ev.tracing_data.header.size = sizeof(ev.tracing_data); + ev.tracing_data.size = aligned_size; + + process(&ev, session); + + err = read_tracing_data(fd, pattrs, nb_events); + write_padded(fd, NULL, 0, padding); + + return aligned_size; +} + +int event__process_tracing_data(event_t *self, + struct perf_session *session) +{ + ssize_t size_read, padding, size = self->tracing_data.size; + off_t offset = lseek(session->fd, 0, SEEK_CUR); + char buf[BUFSIZ]; + + /* setup for reading amidst mmap */ + lseek(session->fd, offset + sizeof(struct tracing_data_event), + SEEK_SET); + + size_read = trace_report(session->fd, session->repipe); + + padding = ALIGN(size_read, sizeof(u64)) - size_read; + + if (read(session->fd, buf, padding) < 0) + die("reading input file"); + if (session->repipe) { + int retw = write(STDOUT_FILENO, buf, padding); + if (retw <= 0 || retw != padding) + die("repiping tracing data padding"); + } + + if (size_read + padding != size) + die("tracing data size mismatch"); + + return size_read + padding; +} + +int event__synthesize_build_id(struct dso *pos, u16 misc, + event__handler_t process, + struct machine *machine, + struct perf_session *session) +{ + event_t ev; + size_t len; + int err = 0; + + if (!pos->hit) + return err; + + memset(&ev, 0, sizeof(ev)); + + len = pos->long_name_len + 1; + len = ALIGN(len, NAME_ALIGN); + memcpy(&ev.build_id.build_id, pos->build_id, sizeof(pos->build_id)); + ev.build_id.header.type = PERF_RECORD_HEADER_BUILD_ID; + ev.build_id.header.misc = misc; + ev.build_id.pid = machine->pid; + ev.build_id.header.size = sizeof(ev.build_id) + len; + memcpy(&ev.build_id.filename, pos->long_name, pos->long_name_len); + + err = process(&ev, session); + + return err; +} + +int event__process_build_id(event_t *self, + struct perf_session *session) +{ + __event_process_build_id(&self->build_id, + self->build_id.filename, + session); + return 0; +} diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h index d118d05d3abe..402ac2454cf8 100644 --- a/tools/perf/util/header.h +++ b/tools/perf/util/header.h @@ -5,6 +5,7 @@ #include <sys/types.h> #include <stdbool.h> #include "types.h" +#include "event.h" #include <linux/bitmap.h> @@ -38,6 +39,11 @@ struct perf_file_header { DECLARE_BITMAP(adds_features, HEADER_FEAT_BITS); }; +struct perf_pipe_file_header { + u64 magic; + u64 size; +}; + struct perf_header; int perf_file_header__read(struct perf_file_header *self, @@ -46,6 +52,7 @@ int perf_file_header__read(struct perf_file_header *self, struct perf_header { int frozen; int attrs, size; + bool needs_swap; struct perf_header_attr **attr; s64 attr_offset; u64 data_offset; @@ -58,13 +65,14 @@ struct perf_header { int perf_header__init(struct perf_header *self); void perf_header__exit(struct perf_header *self); -int perf_header__read(struct perf_header *self, int fd); +int perf_header__read(struct perf_session *session, int fd); int perf_header__write(struct perf_header *self, int fd, bool at_exit); +int perf_header__write_pipe(int fd); int perf_header__add_attr(struct perf_header *self, struct perf_header_attr *attr); -void perf_header__push_event(u64 id, const char *name); +int perf_header__push_event(u64 id, const char *name); char *perf_header__find_event(u64 id); struct perf_header_attr *perf_header_attr__new(struct perf_event_attr *attr); @@ -80,6 +88,40 @@ bool perf_header__has_feat(const struct perf_header *self, int feat); int perf_header__process_sections(struct perf_header *self, int fd, int (*process)(struct perf_file_section *self, + struct perf_header *ph, int feat, int fd)); +int build_id_cache__add_s(const char *sbuild_id, const char *debugdir, + const char *name, bool is_kallsyms); +int build_id_cache__remove_s(const char *sbuild_id, const char *debugdir); + +int event__synthesize_attr(struct perf_event_attr *attr, u16 ids, u64 *id, + event__handler_t process, + struct perf_session *session); +int event__synthesize_attrs(struct perf_header *self, + event__handler_t process, + struct perf_session *session); +int event__process_attr(event_t *self, struct perf_session *session); + +int event__synthesize_event_type(u64 event_id, char *name, + event__handler_t process, + struct perf_session *session); +int event__synthesize_event_types(event__handler_t process, + struct perf_session *session); +int event__process_event_type(event_t *self, + struct perf_session *session); + +int event__synthesize_tracing_data(int fd, struct perf_event_attr *pattrs, + int nb_events, + event__handler_t process, + struct perf_session *session); +int event__process_tracing_data(event_t *self, + struct perf_session *session); + +int event__synthesize_build_id(struct dso *pos, u16 misc, + event__handler_t process, + struct machine *machine, + struct perf_session *session); +int event__process_build_id(event_t *self, struct perf_session *session); + #endif /* __PERF_HEADER_H */ diff --git a/tools/perf/util/help.c b/tools/perf/util/help.c index fbb00978b2e2..6f2975a00358 100644 --- a/tools/perf/util/help.c +++ b/tools/perf/util/help.c @@ -4,28 +4,6 @@ #include "levenshtein.h" #include "help.h" -/* most GUI terminals set COLUMNS (although some don't export it) */ -static int term_columns(void) -{ - char *col_string = getenv("COLUMNS"); - int n_cols; - - if (col_string && (n_cols = atoi(col_string)) > 0) - return n_cols; - -#ifdef TIOCGWINSZ - { - struct winsize ws; - if (!ioctl(1, TIOCGWINSZ, &ws)) { - if (ws.ws_col) - return ws.ws_col; - } - } -#endif - - return 80; -} - void add_cmdname(struct cmdnames *cmds, const char *name, size_t len) { struct cmdname *ent = malloc(sizeof(*ent) + len + 1); @@ -96,9 +74,13 @@ static void pretty_print_string_list(struct cmdnames *cmds, int longest) { int cols = 1, rows; int space = longest + 1; /* min 1 SP between words */ - int max_cols = term_columns() - 1; /* don't print *on* the edge */ + struct winsize win; + int max_cols; int i, j; + get_term_dimensions(&win); + max_cols = win.ws_col - 1; /* don't print *on* the edge */ + if (space < max_cols) cols = max_cols / space; rows = (cmds->cnt + cols - 1) / cols; @@ -324,7 +306,7 @@ const char *help_unknown_cmd(const char *cmd) main_cmds.names[0] = NULL; clean_cmdnames(&main_cmds); - fprintf(stderr, "WARNING: You called a Git program named '%s', " + fprintf(stderr, "WARNING: You called a perf program named '%s', " "which does not exist.\n" "Continuing under the assumption that you meant '%s'\n", cmd, assumed); diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c index e8daf5ca6fd2..784ee0bdda77 100644 --- a/tools/perf/util/hist.c +++ b/tools/perf/util/hist.c @@ -1,3 +1,5 @@ +#include "util.h" +#include "build-id.h" #include "hist.h" #include "session.h" #include "sort.h" @@ -8,25 +10,69 @@ struct callchain_param callchain_param = { .min_percent = 0.5 }; +static void hist_entry__add_cpumode_period(struct hist_entry *self, + unsigned int cpumode, u64 period) +{ + switch (cpumode) { + case PERF_RECORD_MISC_KERNEL: + self->period_sys += period; + break; + case PERF_RECORD_MISC_USER: + self->period_us += period; + break; + case PERF_RECORD_MISC_GUEST_KERNEL: + self->period_guest_sys += period; + break; + case PERF_RECORD_MISC_GUEST_USER: + self->period_guest_us += period; + break; + default: + break; + } +} + /* - * histogram, sorted on item, collects counts + * histogram, sorted on item, collects periods */ -struct hist_entry *__perf_session__add_hist_entry(struct perf_session *self, - struct addr_location *al, - struct symbol *sym_parent, - u64 count, bool *hit) +static struct hist_entry *hist_entry__new(struct hist_entry *template) { - struct rb_node **p = &self->hists.rb_node; + size_t callchain_size = symbol_conf.use_callchain ? sizeof(struct callchain_node) : 0; + struct hist_entry *self = malloc(sizeof(*self) + callchain_size); + + if (self != NULL) { + *self = *template; + self->nr_events = 1; + if (symbol_conf.use_callchain) + callchain_init(self->callchain); + } + + return self; +} + +static void hists__inc_nr_entries(struct hists *self, struct hist_entry *entry) +{ + if (entry->ms.sym && self->max_sym_namelen < entry->ms.sym->namelen) + self->max_sym_namelen = entry->ms.sym->namelen; + ++self->nr_entries; +} + +struct hist_entry *__hists__add_entry(struct hists *self, + struct addr_location *al, + struct symbol *sym_parent, u64 period) +{ + struct rb_node **p = &self->entries.rb_node; struct rb_node *parent = NULL; struct hist_entry *he; struct hist_entry entry = { .thread = al->thread, - .map = al->map, - .sym = al->sym, + .ms = { + .map = al->map, + .sym = al->sym, + }, .ip = al->addr, .level = al->level, - .count = count, + .period = period, .parent = sym_parent, }; int cmp; @@ -38,8 +84,9 @@ struct hist_entry *__perf_session__add_hist_entry(struct perf_session *self, cmp = hist_entry__cmp(&entry, he); if (!cmp) { - *hit = true; - return he; + he->period += period; + ++he->nr_events; + goto out; } if (cmp < 0) @@ -48,13 +95,14 @@ struct hist_entry *__perf_session__add_hist_entry(struct perf_session *self, p = &(*p)->rb_right; } - he = malloc(sizeof(*he)); + he = hist_entry__new(&entry); if (!he) return NULL; - *he = entry; rb_link_node(&he->rb_node, parent, p); - rb_insert_color(&he->rb_node, &self->hists); - *hit = false; + rb_insert_color(&he->rb_node, &self->entries); + hists__inc_nr_entries(self, he); +out: + hist_entry__add_cpumode_period(he, al->cpumode, period); return he; } @@ -65,7 +113,7 @@ hist_entry__cmp(struct hist_entry *left, struct hist_entry *right) int64_t cmp = 0; list_for_each_entry(se, &hist_entry__sort_list, list) { - cmp = se->cmp(left, right); + cmp = se->se_cmp(left, right); if (cmp) break; } @@ -82,7 +130,7 @@ hist_entry__collapse(struct hist_entry *left, struct hist_entry *right) list_for_each_entry(se, &hist_entry__sort_list, list) { int64_t (*f)(struct hist_entry *, struct hist_entry *); - f = se->collapse ?: se->cmp; + f = se->se_collapse ?: se->se_cmp; cmp = f(left, right); if (cmp) @@ -101,7 +149,7 @@ void hist_entry__free(struct hist_entry *he) * collapse the histogram */ -static void collapse__insert_entry(struct rb_root *root, struct hist_entry *he) +static bool collapse__insert_entry(struct rb_root *root, struct hist_entry *he) { struct rb_node **p = &root->rb_node; struct rb_node *parent = NULL; @@ -115,9 +163,9 @@ static void collapse__insert_entry(struct rb_root *root, struct hist_entry *he) cmp = hist_entry__collapse(iter, he); if (!cmp) { - iter->count += he->count; + iter->period += he->period; hist_entry__free(he); - return; + return false; } if (cmp < 0) @@ -128,9 +176,10 @@ static void collapse__insert_entry(struct rb_root *root, struct hist_entry *he) rb_link_node(&he->rb_node, parent, p); rb_insert_color(&he->rb_node, root); + return true; } -void perf_session__collapse_resort(struct perf_session *self) +void hists__collapse_resort(struct hists *self) { struct rb_root tmp; struct rb_node *next; @@ -140,72 +189,77 @@ void perf_session__collapse_resort(struct perf_session *self) return; tmp = RB_ROOT; - next = rb_first(&self->hists); + next = rb_first(&self->entries); + self->nr_entries = 0; + self->max_sym_namelen = 0; while (next) { n = rb_entry(next, struct hist_entry, rb_node); next = rb_next(&n->rb_node); - rb_erase(&n->rb_node, &self->hists); - collapse__insert_entry(&tmp, n); + rb_erase(&n->rb_node, &self->entries); + if (collapse__insert_entry(&tmp, n)) + hists__inc_nr_entries(self, n); } - self->hists = tmp; + self->entries = tmp; } /* - * reverse the map, sort on count. + * reverse the map, sort on period. */ -static void perf_session__insert_output_hist_entry(struct rb_root *root, - struct hist_entry *he, - u64 min_callchain_hits) +static void __hists__insert_output_entry(struct rb_root *entries, + struct hist_entry *he, + u64 min_callchain_hits) { - struct rb_node **p = &root->rb_node; + struct rb_node **p = &entries->rb_node; struct rb_node *parent = NULL; struct hist_entry *iter; if (symbol_conf.use_callchain) - callchain_param.sort(&he->sorted_chain, &he->callchain, + callchain_param.sort(&he->sorted_chain, he->callchain, min_callchain_hits, &callchain_param); while (*p != NULL) { parent = *p; iter = rb_entry(parent, struct hist_entry, rb_node); - if (he->count > iter->count) + if (he->period > iter->period) p = &(*p)->rb_left; else p = &(*p)->rb_right; } rb_link_node(&he->rb_node, parent, p); - rb_insert_color(&he->rb_node, root); + rb_insert_color(&he->rb_node, entries); } -void perf_session__output_resort(struct perf_session *self, u64 total_samples) +void hists__output_resort(struct hists *self) { struct rb_root tmp; struct rb_node *next; struct hist_entry *n; u64 min_callchain_hits; - min_callchain_hits = - total_samples * (callchain_param.min_percent / 100); + min_callchain_hits = self->stats.total_period * (callchain_param.min_percent / 100); tmp = RB_ROOT; - next = rb_first(&self->hists); + next = rb_first(&self->entries); + + self->nr_entries = 0; + self->max_sym_namelen = 0; while (next) { n = rb_entry(next, struct hist_entry, rb_node); next = rb_next(&n->rb_node); - rb_erase(&n->rb_node, &self->hists); - perf_session__insert_output_hist_entry(&tmp, n, - min_callchain_hits); + rb_erase(&n->rb_node, &self->entries); + __hists__insert_output_entry(&tmp, n, min_callchain_hits); + hists__inc_nr_entries(self, n); } - self->hists = tmp; + self->entries = tmp; } static size_t callchain__fprintf_left_margin(FILE *fp, int left_margin) @@ -237,7 +291,7 @@ static size_t ipchain__fprintf_graph_line(FILE *fp, int depth, int depth_mask, } static size_t ipchain__fprintf_graph(FILE *fp, struct callchain_list *chain, - int depth, int depth_mask, int count, + int depth, int depth_mask, int period, u64 total_samples, int hits, int left_margin) { @@ -250,7 +304,7 @@ static size_t ipchain__fprintf_graph(FILE *fp, struct callchain_list *chain, ret += fprintf(fp, "|"); else ret += fprintf(fp, " "); - if (!count && i == depth - 1) { + if (!period && i == depth - 1) { double percent; percent = hits * 100.0 / total_samples; @@ -258,8 +312,8 @@ static size_t ipchain__fprintf_graph(FILE *fp, struct callchain_list *chain, } else ret += fprintf(fp, "%s", " "); } - if (chain->sym) - ret += fprintf(fp, "%s\n", chain->sym->name); + if (chain->ms.sym) + ret += fprintf(fp, "%s\n", chain->ms.sym->name); else ret += fprintf(fp, "%p\n", (void *)(long)chain->ip); @@ -278,7 +332,7 @@ static void init_rem_hits(void) } strcpy(rem_sq_bracket->name, "[...]"); - rem_hits.sym = rem_sq_bracket; + rem_hits.ms.sym = rem_sq_bracket; } static size_t __callchain__fprintf_graph(FILE *fp, struct callchain_node *self, @@ -293,6 +347,7 @@ static size_t __callchain__fprintf_graph(FILE *fp, struct callchain_node *self, u64 remaining; size_t ret = 0; int i; + uint entries_printed = 0; if (callchain_param.mode == CHAIN_GRAPH_REL) new_total = self->children_hit; @@ -321,15 +376,13 @@ static size_t __callchain__fprintf_graph(FILE *fp, struct callchain_node *self, new_depth_mask &= ~(1 << (depth - 1)); /* - * But we keep the older depth mask for the line seperator + * But we keep the older depth mask for the line separator * to keep the level link until we reach the last child */ ret += ipchain__fprintf_graph_line(fp, depth, depth_mask, left_margin); i = 0; list_for_each_entry(chain, &child->val, list) { - if (chain->ip >= PERF_CONTEXT_MAX) - continue; ret += ipchain__fprintf_graph(fp, chain, depth, new_depth_mask, i++, new_total, @@ -341,6 +394,8 @@ static size_t __callchain__fprintf_graph(FILE *fp, struct callchain_node *self, new_depth_mask | (1 << depth), left_margin); node = next; + if (++entries_printed == callchain_param.print_limit) + break; } if (callchain_param.mode == CHAIN_GRAPH_REL && @@ -366,11 +421,9 @@ static size_t callchain__fprintf_graph(FILE *fp, struct callchain_node *self, bool printed = false; int i = 0; int ret = 0; + u32 entries_printed = 0; list_for_each_entry(chain, &self->val, list) { - if (chain->ip >= PERF_CONTEXT_MAX) - continue; - if (!i++ && sort__first_dimension == SORT_SYM) continue; @@ -385,10 +438,13 @@ static size_t callchain__fprintf_graph(FILE *fp, struct callchain_node *self, } else ret += callchain__fprintf_left_margin(fp, left_margin); - if (chain->sym) - ret += fprintf(fp, " %s\n", chain->sym->name); + if (chain->ms.sym) + ret += fprintf(fp, " %s\n", chain->ms.sym->name); else ret += fprintf(fp, " %p\n", (void *)(long)chain->ip); + + if (++entries_printed == callchain_param.print_limit) + break; } ret += __callchain__fprintf_graph(fp, self, total_samples, 1, 1, left_margin); @@ -411,8 +467,8 @@ static size_t callchain__fprintf_flat(FILE *fp, struct callchain_node *self, list_for_each_entry(chain, &self->val, list) { if (chain->ip >= PERF_CONTEXT_MAX) continue; - if (chain->sym) - ret += fprintf(fp, " %s\n", chain->sym->name); + if (chain->ms.sym) + ret += fprintf(fp, " %s\n", chain->ms.sym->name); else ret += fprintf(fp, " %p\n", (void *)(long)chain->ip); @@ -427,6 +483,7 @@ static size_t hist_entry_callchain__fprintf(FILE *fp, struct hist_entry *self, struct rb_node *rb_node; struct callchain_node *chain; size_t ret = 0; + u32 entries_printed = 0; rb_node = rb_first(&self->sorted_chain); while (rb_node) { @@ -449,55 +506,88 @@ static size_t hist_entry_callchain__fprintf(FILE *fp, struct hist_entry *self, break; } ret += fprintf(fp, "\n"); + if (++entries_printed == callchain_param.print_limit) + break; rb_node = rb_next(rb_node); } return ret; } -static size_t hist_entry__fprintf(struct hist_entry *self, - struct perf_session *session, - struct perf_session *pair_session, - bool show_displacement, - long displacement, FILE *fp) +int hist_entry__snprintf(struct hist_entry *self, char *s, size_t size, + struct hists *pair_hists, bool show_displacement, + long displacement, bool color, u64 session_total) { struct sort_entry *se; - u64 count, total; + u64 period, total, period_sys, period_us, period_guest_sys, period_guest_us; const char *sep = symbol_conf.field_sep; - size_t ret; + int ret; if (symbol_conf.exclude_other && !self->parent) return 0; - if (pair_session) { - count = self->pair ? self->pair->count : 0; - total = pair_session->events_stats.total; + if (pair_hists) { + period = self->pair ? self->pair->period : 0; + total = pair_hists->stats.total_period; + period_sys = self->pair ? self->pair->period_sys : 0; + period_us = self->pair ? self->pair->period_us : 0; + period_guest_sys = self->pair ? self->pair->period_guest_sys : 0; + period_guest_us = self->pair ? self->pair->period_guest_us : 0; } else { - count = self->count; - total = session->events_stats.total; + period = self->period; + total = session_total; + period_sys = self->period_sys; + period_us = self->period_us; + period_guest_sys = self->period_guest_sys; + period_guest_us = self->period_guest_us; } - if (total) - ret = percent_color_fprintf(fp, sep ? "%.2f" : " %6.2f%%", - (count * 100.0) / total); - else - ret = fprintf(fp, sep ? "%lld" : "%12lld ", count); + if (total) { + if (color) + ret = percent_color_snprintf(s, size, + sep ? "%.2f" : " %6.2f%%", + (period * 100.0) / total); + else + ret = snprintf(s, size, sep ? "%.2f" : " %6.2f%%", + (period * 100.0) / total); + if (symbol_conf.show_cpu_utilization) { + ret += percent_color_snprintf(s + ret, size - ret, + sep ? "%.2f" : " %6.2f%%", + (period_sys * 100.0) / total); + ret += percent_color_snprintf(s + ret, size - ret, + sep ? "%.2f" : " %6.2f%%", + (period_us * 100.0) / total); + if (perf_guest) { + ret += percent_color_snprintf(s + ret, + size - ret, + sep ? "%.2f" : " %6.2f%%", + (period_guest_sys * 100.0) / + total); + ret += percent_color_snprintf(s + ret, + size - ret, + sep ? "%.2f" : " %6.2f%%", + (period_guest_us * 100.0) / + total); + } + } + } else + ret = snprintf(s, size, sep ? "%lld" : "%12lld ", period); if (symbol_conf.show_nr_samples) { if (sep) - fprintf(fp, "%c%lld", *sep, count); + ret += snprintf(s + ret, size - ret, "%c%lld", *sep, period); else - fprintf(fp, "%11lld", count); + ret += snprintf(s + ret, size - ret, "%11lld", period); } - if (pair_session) { + if (pair_hists) { char bf[32]; double old_percent = 0, new_percent = 0, diff; if (total > 0) - old_percent = (count * 100.0) / total; - if (session->events_stats.total > 0) - new_percent = (self->count * 100.0) / session->events_stats.total; + old_percent = (period * 100.0) / total; + if (session_total > 0) + new_percent = (self->period * 100.0) / session_total; diff = new_percent - old_percent; @@ -507,9 +597,9 @@ static size_t hist_entry__fprintf(struct hist_entry *self, snprintf(bf, sizeof(bf), " "); if (sep) - ret += fprintf(fp, "%c%s", *sep, bf); + ret += snprintf(s + ret, size - ret, "%c%s", *sep, bf); else - ret += fprintf(fp, "%11.11s", bf); + ret += snprintf(s + ret, size - ret, "%11.11s", bf); if (show_displacement) { if (displacement) @@ -518,9 +608,9 @@ static size_t hist_entry__fprintf(struct hist_entry *self, snprintf(bf, sizeof(bf), " "); if (sep) - fprintf(fp, "%c%s", *sep, bf); + ret += snprintf(s + ret, size - ret, "%c%s", *sep, bf); else - fprintf(fp, "%6.6s", bf); + ret += snprintf(s + ret, size - ret, "%6.6s", bf); } } @@ -528,32 +618,48 @@ static size_t hist_entry__fprintf(struct hist_entry *self, if (se->elide) continue; - fprintf(fp, "%s", sep ?: " "); - ret += se->print(fp, self, se->width ? *se->width : 0); + ret += snprintf(s + ret, size - ret, "%s", sep ?: " "); + ret += se->se_snprintf(self, s + ret, size - ret, + se->se_width ? *se->se_width : 0); } - ret += fprintf(fp, "\n"); + return ret; +} - if (symbol_conf.use_callchain) { - int left_margin = 0; +int hist_entry__fprintf(struct hist_entry *self, struct hists *pair_hists, + bool show_displacement, long displacement, FILE *fp, + u64 session_total) +{ + char bf[512]; + int ret; - if (sort__first_dimension == SORT_COMM) { - se = list_first_entry(&hist_entry__sort_list, typeof(*se), - list); - left_margin = se->width ? *se->width : 0; - left_margin -= thread__comm_len(self->thread); - } + ret = hist_entry__snprintf(self, bf, sizeof(bf), pair_hists, + show_displacement, displacement, + true, session_total); + if (!ret) + return 0; + + return fprintf(fp, "%s\n", bf); +} + +static size_t hist_entry__fprintf_callchain(struct hist_entry *self, FILE *fp, + u64 session_total) +{ + int left_margin = 0; - hist_entry_callchain__fprintf(fp, self, session->events_stats.total, - left_margin); + if (sort__first_dimension == SORT_COMM) { + struct sort_entry *se = list_first_entry(&hist_entry__sort_list, + typeof(*se), list); + left_margin = se->se_width ? *se->se_width : 0; + left_margin -= thread__comm_len(self->thread); } - return ret; + return hist_entry_callchain__fprintf(fp, self, session_total, + left_margin); } -size_t perf_session__fprintf_hists(struct perf_session *self, - struct perf_session *pair, - bool show_displacement, FILE *fp) +size_t hists__fprintf(struct hists *self, struct hists *pair, + bool show_displacement, FILE *fp) { struct sort_entry *se; struct rb_node *nd; @@ -562,7 +668,7 @@ size_t perf_session__fprintf_hists(struct perf_session *self, long displacement = 0; unsigned int width; const char *sep = symbol_conf.field_sep; - char *col_width = symbol_conf.col_width_list_str; + const char *col_width = symbol_conf.col_width_list_str; init_rem_hits(); @@ -575,6 +681,24 @@ size_t perf_session__fprintf_hists(struct perf_session *self, fputs(" Samples ", fp); } + if (symbol_conf.show_cpu_utilization) { + if (sep) { + ret += fprintf(fp, "%csys", *sep); + ret += fprintf(fp, "%cus", *sep); + if (perf_guest) { + ret += fprintf(fp, "%cguest sys", *sep); + ret += fprintf(fp, "%cguest us", *sep); + } + } else { + ret += fprintf(fp, " sys "); + ret += fprintf(fp, " us "); + if (perf_guest) { + ret += fprintf(fp, " guest sys "); + ret += fprintf(fp, " guest us "); + } + } + } + if (pair) { if (sep) ret += fprintf(fp, "%cDelta", *sep); @@ -593,22 +717,22 @@ size_t perf_session__fprintf_hists(struct perf_session *self, if (se->elide) continue; if (sep) { - fprintf(fp, "%c%s", *sep, se->header); + fprintf(fp, "%c%s", *sep, se->se_header); continue; } - width = strlen(se->header); - if (se->width) { + width = strlen(se->se_header); + if (se->se_width) { if (symbol_conf.col_width_list_str) { if (col_width) { - *se->width = atoi(col_width); + *se->se_width = atoi(col_width); col_width = strchr(col_width, ','); if (col_width) ++col_width; } } - width = *se->width = max(*se->width, width); + width = *se->se_width = max(*se->se_width, width); } - fprintf(fp, " %*s", width, se->header); + fprintf(fp, " %*s", width, se->se_header); } fprintf(fp, "\n"); @@ -630,10 +754,10 @@ size_t perf_session__fprintf_hists(struct perf_session *self, continue; fprintf(fp, " "); - if (se->width) - width = *se->width; + if (se->se_width) + width = *se->se_width; else - width = strlen(se->header); + width = strlen(se->se_header); for (i = 0; i < width; i++) fprintf(fp, "."); } @@ -641,8 +765,9 @@ size_t perf_session__fprintf_hists(struct perf_session *self, fprintf(fp, "\n#\n"); print_entries: - for (nd = rb_first(&self->hists); nd; nd = rb_next(nd)) { + for (nd = rb_first(&self->entries); nd; nd = rb_next(nd)) { struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node); + int cnt; if (show_displacement) { if (h->pair != NULL) @@ -652,11 +777,320 @@ print_entries: displacement = 0; ++position; } - ret += hist_entry__fprintf(h, self, pair, show_displacement, - displacement, fp); + cnt = hist_entry__fprintf(h, pair, show_displacement, + displacement, fp, self->stats.total_period); + /* Ignore those that didn't match the parent filter */ + if (!cnt) + continue; + + ret += cnt; + + if (symbol_conf.use_callchain) + ret += hist_entry__fprintf_callchain(h, fp, self->stats.total_period); + + if (h->ms.map == NULL && verbose > 1) { + __map_groups__fprintf_maps(&h->thread->mg, + MAP__FUNCTION, verbose, fp); + fprintf(fp, "%.10s end\n", graph_dotted_line); + } } free(rem_sq_bracket); return ret; } + +enum hist_filter { + HIST_FILTER__DSO, + HIST_FILTER__THREAD, +}; + +void hists__filter_by_dso(struct hists *self, const struct dso *dso) +{ + struct rb_node *nd; + + self->nr_entries = self->stats.total_period = 0; + self->stats.nr_events[PERF_RECORD_SAMPLE] = 0; + self->max_sym_namelen = 0; + + for (nd = rb_first(&self->entries); nd; nd = rb_next(nd)) { + struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node); + + if (symbol_conf.exclude_other && !h->parent) + continue; + + if (dso != NULL && (h->ms.map == NULL || h->ms.map->dso != dso)) { + h->filtered |= (1 << HIST_FILTER__DSO); + continue; + } + + h->filtered &= ~(1 << HIST_FILTER__DSO); + if (!h->filtered) { + ++self->nr_entries; + self->stats.total_period += h->period; + self->stats.nr_events[PERF_RECORD_SAMPLE] += h->nr_events; + if (h->ms.sym && + self->max_sym_namelen < h->ms.sym->namelen) + self->max_sym_namelen = h->ms.sym->namelen; + } + } +} + +void hists__filter_by_thread(struct hists *self, const struct thread *thread) +{ + struct rb_node *nd; + + self->nr_entries = self->stats.total_period = 0; + self->stats.nr_events[PERF_RECORD_SAMPLE] = 0; + self->max_sym_namelen = 0; + + for (nd = rb_first(&self->entries); nd; nd = rb_next(nd)) { + struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node); + + if (thread != NULL && h->thread != thread) { + h->filtered |= (1 << HIST_FILTER__THREAD); + continue; + } + h->filtered &= ~(1 << HIST_FILTER__THREAD); + if (!h->filtered) { + ++self->nr_entries; + self->stats.total_period += h->period; + self->stats.nr_events[PERF_RECORD_SAMPLE] += h->nr_events; + if (h->ms.sym && + self->max_sym_namelen < h->ms.sym->namelen) + self->max_sym_namelen = h->ms.sym->namelen; + } + } +} + +static int symbol__alloc_hist(struct symbol *self) +{ + struct sym_priv *priv = symbol__priv(self); + const int size = (sizeof(*priv->hist) + + (self->end - self->start) * sizeof(u64)); + + priv->hist = zalloc(size); + return priv->hist == NULL ? -1 : 0; +} + +int hist_entry__inc_addr_samples(struct hist_entry *self, u64 ip) +{ + unsigned int sym_size, offset; + struct symbol *sym = self->ms.sym; + struct sym_priv *priv; + struct sym_hist *h; + + if (!sym || !self->ms.map) + return 0; + + priv = symbol__priv(sym); + if (priv->hist == NULL && symbol__alloc_hist(sym) < 0) + return -ENOMEM; + + sym_size = sym->end - sym->start; + offset = ip - sym->start; + + pr_debug3("%s: ip=%#Lx\n", __func__, self->ms.map->unmap_ip(self->ms.map, ip)); + + if (offset >= sym_size) + return 0; + + h = priv->hist; + h->sum++; + h->ip[offset]++; + + pr_debug3("%#Lx %s: period++ [ip: %#Lx, %#Lx] => %Ld\n", self->ms.sym->start, + self->ms.sym->name, ip, ip - self->ms.sym->start, h->ip[offset]); + return 0; +} + +static struct objdump_line *objdump_line__new(s64 offset, char *line) +{ + struct objdump_line *self = malloc(sizeof(*self)); + + if (self != NULL) { + self->offset = offset; + self->line = line; + } + + return self; +} + +void objdump_line__free(struct objdump_line *self) +{ + free(self->line); + free(self); +} + +static void objdump__add_line(struct list_head *head, struct objdump_line *line) +{ + list_add_tail(&line->node, head); +} + +struct objdump_line *objdump__get_next_ip_line(struct list_head *head, + struct objdump_line *pos) +{ + list_for_each_entry_continue(pos, head, node) + if (pos->offset >= 0) + return pos; + + return NULL; +} + +static int hist_entry__parse_objdump_line(struct hist_entry *self, FILE *file, + struct list_head *head) +{ + struct symbol *sym = self->ms.sym; + struct objdump_line *objdump_line; + char *line = NULL, *tmp, *tmp2, *c; + size_t line_len; + s64 line_ip, offset = -1; + + if (getline(&line, &line_len, file) < 0) + return -1; + + if (!line) + return -1; + + while (line_len != 0 && isspace(line[line_len - 1])) + line[--line_len] = '\0'; + + c = strchr(line, '\n'); + if (c) + *c = 0; + + line_ip = -1; + + /* + * Strip leading spaces: + */ + tmp = line; + while (*tmp) { + if (*tmp != ' ') + break; + tmp++; + } + + if (*tmp) { + /* + * Parse hexa addresses followed by ':' + */ + line_ip = strtoull(tmp, &tmp2, 16); + if (*tmp2 != ':' || tmp == tmp2 || tmp2[1] == '\0') + line_ip = -1; + } + + if (line_ip != -1) { + u64 start = map__rip_2objdump(self->ms.map, sym->start), + end = map__rip_2objdump(self->ms.map, sym->end); + + offset = line_ip - start; + if (offset < 0 || (u64)line_ip > end) + offset = -1; + } + + objdump_line = objdump_line__new(offset, line); + if (objdump_line == NULL) { + free(line); + return -1; + } + objdump__add_line(head, objdump_line); + + return 0; +} + +int hist_entry__annotate(struct hist_entry *self, struct list_head *head) +{ + struct symbol *sym = self->ms.sym; + struct map *map = self->ms.map; + struct dso *dso = map->dso; + char *filename = dso__build_id_filename(dso, NULL, 0); + bool free_filename = true; + char command[PATH_MAX * 2]; + FILE *file; + int err = 0; + u64 len; + + if (filename == NULL) { + if (dso->has_build_id) { + pr_err("Can't annotate %s: not enough memory\n", + sym->name); + return -ENOMEM; + } + goto fallback; + } else if (readlink(filename, command, sizeof(command)) < 0 || + strstr(command, "[kernel.kallsyms]") || + access(filename, R_OK)) { + free(filename); +fallback: + /* + * If we don't have build-ids or the build-id file isn't in the + * cache, or is just a kallsyms file, well, lets hope that this + * DSO is the same as when 'perf record' ran. + */ + filename = dso->long_name; + free_filename = false; + } + + if (dso->origin == DSO__ORIG_KERNEL) { + if (dso->annotate_warned) + goto out_free_filename; + err = -ENOENT; + dso->annotate_warned = 1; + pr_err("Can't annotate %s: No vmlinux file was found in the " + "path\n", sym->name); + goto out_free_filename; + } + + pr_debug("%s: filename=%s, sym=%s, start=%#Lx, end=%#Lx\n", __func__, + filename, sym->name, map->unmap_ip(map, sym->start), + map->unmap_ip(map, sym->end)); + + len = sym->end - sym->start; + + pr_debug("annotating [%p] %30s : [%p] %30s\n", + dso, dso->long_name, sym, sym->name); + + snprintf(command, sizeof(command), + "objdump --start-address=0x%016Lx --stop-address=0x%016Lx -dS %s|grep -v %s|expand", + map__rip_2objdump(map, sym->start), + map__rip_2objdump(map, sym->end), + filename, filename); + + pr_debug("Executing: %s\n", command); + + file = popen(command, "r"); + if (!file) + goto out_free_filename; + + while (!feof(file)) + if (hist_entry__parse_objdump_line(self, file, head) < 0) + break; + + pclose(file); +out_free_filename: + if (free_filename) + free(filename); + return err; +} + +void hists__inc_nr_events(struct hists *self, u32 type) +{ + ++self->stats.nr_events[0]; + ++self->stats.nr_events[type]; +} + +size_t hists__fprintf_nr_events(struct hists *self, FILE *fp) +{ + int i; + size_t ret = 0; + + for (i = 0; i < PERF_RECORD_HEADER_MAX; ++i) { + if (!event__name[i]) + continue; + ret += fprintf(fp, "%10s events: %10d\n", + event__name[i], self->stats.nr_events[i]); + } + + return ret; +} diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h index e5f99b24048b..83fa33a7b38b 100644 --- a/tools/perf/util/hist.h +++ b/tools/perf/util/hist.h @@ -6,22 +6,124 @@ extern struct callchain_param callchain_param; -struct perf_session; struct hist_entry; struct addr_location; struct symbol; +struct rb_root; -struct hist_entry *__perf_session__add_hist_entry(struct perf_session *self, - struct addr_location *al, - struct symbol *parent, - u64 count, bool *hit); +struct objdump_line { + struct list_head node; + s64 offset; + char *line; +}; + +void objdump_line__free(struct objdump_line *self); +struct objdump_line *objdump__get_next_ip_line(struct list_head *head, + struct objdump_line *pos); + +struct sym_hist { + u64 sum; + u64 ip[0]; +}; + +struct sym_ext { + struct rb_node node; + double percent; + char *path; +}; + +struct sym_priv { + struct sym_hist *hist; + struct sym_ext *ext; +}; + +/* + * The kernel collects the number of events it couldn't send in a stretch and + * when possible sends this number in a PERF_RECORD_LOST event. The number of + * such "chunks" of lost events is stored in .nr_events[PERF_EVENT_LOST] while + * total_lost tells exactly how many events the kernel in fact lost, i.e. it is + * the sum of all struct lost_event.lost fields reported. + * + * The total_period is needed because by default auto-freq is used, so + * multipling nr_events[PERF_EVENT_SAMPLE] by a frequency isn't possible to get + * the total number of low level events, it is necessary to to sum all struct + * sample_event.period and stash the result in total_period. + */ +struct events_stats { + u64 total_period; + u64 total_lost; + u32 nr_events[PERF_RECORD_HEADER_MAX]; + u32 nr_unknown_events; +}; + +struct hists { + struct rb_node rb_node; + struct rb_root entries; + u64 nr_entries; + struct events_stats stats; + u64 config; + u64 event_stream; + u32 type; + u32 max_sym_namelen; +}; + +struct hist_entry *__hists__add_entry(struct hists *self, + struct addr_location *al, + struct symbol *parent, u64 period); extern int64_t hist_entry__cmp(struct hist_entry *, struct hist_entry *); extern int64_t hist_entry__collapse(struct hist_entry *, struct hist_entry *); +int hist_entry__fprintf(struct hist_entry *self, struct hists *pair_hists, + bool show_displacement, long displacement, FILE *fp, + u64 total); +int hist_entry__snprintf(struct hist_entry *self, char *bf, size_t size, + struct hists *pair_hists, bool show_displacement, + long displacement, bool color, u64 total); void hist_entry__free(struct hist_entry *); -void perf_session__output_resort(struct perf_session *self, u64 total_samples); -void perf_session__collapse_resort(struct perf_session *self); -size_t perf_session__fprintf_hists(struct perf_session *self, - struct perf_session *pair, - bool show_displacement, FILE *fp); +void hists__output_resort(struct hists *self); +void hists__collapse_resort(struct hists *self); + +void hists__inc_nr_events(struct hists *self, u32 type); +size_t hists__fprintf_nr_events(struct hists *self, FILE *fp); + +size_t hists__fprintf(struct hists *self, struct hists *pair, + bool show_displacement, FILE *fp); + +int hist_entry__inc_addr_samples(struct hist_entry *self, u64 ip); +int hist_entry__annotate(struct hist_entry *self, struct list_head *head); + +void hists__filter_by_dso(struct hists *self, const struct dso *dso); +void hists__filter_by_thread(struct hists *self, const struct thread *thread); + +#ifdef NO_NEWT_SUPPORT +static inline int hists__browse(struct hists *self __used, + const char *helpline __used, + const char *ev_name __used) +{ + return 0; +} + +static inline int hists__tui_browse_tree(struct rb_root *self __used, + const char *help __used) +{ + return 0; +} + +static inline int hist_entry__tui_annotate(struct hist_entry *self __used) +{ + return 0; +} +#define KEY_LEFT -1 +#define KEY_RIGHT -2 +#else +#include <newt.h> +int hists__browse(struct hists *self, const char *helpline, + const char *ev_name); +int hist_entry__tui_annotate(struct hist_entry *self); + +#define KEY_LEFT NEWT_KEY_LEFT +#define KEY_RIGHT NEWT_KEY_RIGHT + +int hists__tui_browse_tree(struct rb_root *self, const char *help); +#endif #endif /* __PERF_HIST_H */ diff --git a/tools/perf/util/hweight.c b/tools/perf/util/hweight.c new file mode 100644 index 000000000000..5c1d0d099f0d --- /dev/null +++ b/tools/perf/util/hweight.c @@ -0,0 +1,31 @@ +#include <linux/bitops.h> + +/** + * hweightN - returns the hamming weight of a N-bit word + * @x: the word to weigh + * + * The Hamming Weight of a number is the total number of bits set in it. + */ + +unsigned int hweight32(unsigned int w) +{ + unsigned int res = w - ((w >> 1) & 0x55555555); + res = (res & 0x33333333) + ((res >> 2) & 0x33333333); + res = (res + (res >> 4)) & 0x0F0F0F0F; + res = res + (res >> 8); + return (res + (res >> 16)) & 0x000000FF; +} + +unsigned long hweight64(__u64 w) +{ +#if BITS_PER_LONG == 32 + return hweight32((unsigned int)(w >> 32)) + hweight32((unsigned int)w); +#elif BITS_PER_LONG == 64 + __u64 res = w - ((w >> 1) & 0x5555555555555555ul); + res = (res & 0x3333333333333333ul) + ((res >> 2) & 0x3333333333333333ul); + res = (res + (res >> 4)) & 0x0F0F0F0F0F0F0F0Ful; + res = res + (res >> 8); + res = res + (res >> 16); + return (res + (res >> 32)) & 0x00000000000000FFul; +#endif +} diff --git a/tools/perf/util/include/asm/bitops.h b/tools/perf/util/include/asm/bitops.h deleted file mode 100644 index 58e9817ffae0..000000000000 --- a/tools/perf/util/include/asm/bitops.h +++ /dev/null @@ -1,18 +0,0 @@ -#ifndef _PERF_ASM_BITOPS_H_ -#define _PERF_ASM_BITOPS_H_ - -#include <sys/types.h> -#include "../../types.h" -#include <linux/compiler.h> - -/* CHECKME: Not sure both always match */ -#define BITS_PER_LONG __WORDSIZE - -#include "../../../../include/asm-generic/bitops/__fls.h" -#include "../../../../include/asm-generic/bitops/fls.h" -#include "../../../../include/asm-generic/bitops/fls64.h" -#include "../../../../include/asm-generic/bitops/__ffs.h" -#include "../../../../include/asm-generic/bitops/ffz.h" -#include "../../../../include/asm-generic/bitops/hweight.h" - -#endif diff --git a/tools/perf/util/include/asm/hweight.h b/tools/perf/util/include/asm/hweight.h new file mode 100644 index 000000000000..36cf26d434a5 --- /dev/null +++ b/tools/perf/util/include/asm/hweight.h @@ -0,0 +1,8 @@ +#ifndef PERF_HWEIGHT_H +#define PERF_HWEIGHT_H + +#include <linux/types.h> +unsigned int hweight32(unsigned int w); +unsigned long hweight64(__u64 w); + +#endif /* PERF_HWEIGHT_H */ diff --git a/tools/perf/util/include/dwarf-regs.h b/tools/perf/util/include/dwarf-regs.h new file mode 100644 index 000000000000..cf6727e99c44 --- /dev/null +++ b/tools/perf/util/include/dwarf-regs.h @@ -0,0 +1,8 @@ +#ifndef _PERF_DWARF_REGS_H_ +#define _PERF_DWARF_REGS_H_ + +#ifdef DWARF_SUPPORT +const char *get_arch_regstr(unsigned int n); +#endif + +#endif diff --git a/tools/perf/util/include/linux/bitmap.h b/tools/perf/util/include/linux/bitmap.h index 94507639a8c4..eda4416efa0a 100644 --- a/tools/perf/util/include/linux/bitmap.h +++ b/tools/perf/util/include/linux/bitmap.h @@ -1,3 +1,35 @@ -#include "../../../../include/linux/bitmap.h" -#include "../../../../include/asm-generic/bitops/find.h" -#include <linux/errno.h> +#ifndef _PERF_BITOPS_H +#define _PERF_BITOPS_H + +#include <string.h> +#include <linux/bitops.h> + +int __bitmap_weight(const unsigned long *bitmap, int bits); + +#define BITMAP_LAST_WORD_MASK(nbits) \ +( \ + ((nbits) % BITS_PER_LONG) ? \ + (1UL<<((nbits) % BITS_PER_LONG))-1 : ~0UL \ +) + +#define small_const_nbits(nbits) \ + (__builtin_constant_p(nbits) && (nbits) <= BITS_PER_LONG) + +static inline void bitmap_zero(unsigned long *dst, int nbits) +{ + if (small_const_nbits(nbits)) + *dst = 0UL; + else { + int len = BITS_TO_LONGS(nbits) * sizeof(unsigned long); + memset(dst, 0, len); + } +} + +static inline int bitmap_weight(const unsigned long *src, int nbits) +{ + if (small_const_nbits(nbits)) + return hweight_long(*src & BITMAP_LAST_WORD_MASK(nbits)); + return __bitmap_weight(src, nbits); +} + +#endif /* _PERF_BITOPS_H */ diff --git a/tools/perf/util/include/linux/bitops.h b/tools/perf/util/include/linux/bitops.h index 8d63116e9435..bb4ac2e05385 100644 --- a/tools/perf/util/include/linux/bitops.h +++ b/tools/perf/util/include/linux/bitops.h @@ -1,13 +1,12 @@ #ifndef _PERF_LINUX_BITOPS_H_ #define _PERF_LINUX_BITOPS_H_ -#define __KERNEL__ +#include <linux/kernel.h> +#include <asm/hweight.h> -#define CONFIG_GENERIC_FIND_NEXT_BIT -#define CONFIG_GENERIC_FIND_FIRST_BIT -#include "../../../../include/linux/bitops.h" - -#undef __KERNEL__ +#define BITS_PER_LONG __WORDSIZE +#define BITS_PER_BYTE 8 +#define BITS_TO_LONGS(nr) DIV_ROUND_UP(nr, BITS_PER_BYTE * sizeof(long)) static inline void set_bit(int nr, unsigned long *addr) { @@ -20,10 +19,9 @@ static __always_inline int test_bit(unsigned int nr, const unsigned long *addr) (((unsigned long *)addr)[nr / BITS_PER_LONG])) != 0; } -unsigned long generic_find_next_zero_le_bit(const unsigned long *addr, unsigned - long size, unsigned long offset); - -unsigned long generic_find_next_le_bit(const unsigned long *addr, unsigned - long size, unsigned long offset); +static inline unsigned long hweight_long(unsigned long w) +{ + return sizeof(w) == 4 ? hweight32(w) : hweight64(w); +} #endif diff --git a/tools/perf/util/include/linux/compiler.h b/tools/perf/util/include/linux/compiler.h index dfb0713ed47f..791f9dd27ebf 100644 --- a/tools/perf/util/include/linux/compiler.h +++ b/tools/perf/util/include/linux/compiler.h @@ -7,4 +7,6 @@ #define __user #define __attribute_const__ +#define __used __attribute__((__unused__)) + #endif diff --git a/tools/perf/util/include/linux/hash.h b/tools/perf/util/include/linux/hash.h new file mode 100644 index 000000000000..201f57397997 --- /dev/null +++ b/tools/perf/util/include/linux/hash.h @@ -0,0 +1,5 @@ +#include "../../../../include/linux/hash.h" + +#ifndef PERF_HASH_H +#define PERF_HASH_H +#endif diff --git a/tools/perf/util/include/linux/kernel.h b/tools/perf/util/include/linux/kernel.h index 21c0274c02fa..1eb804fd3fbf 100644 --- a/tools/perf/util/include/linux/kernel.h +++ b/tools/perf/util/include/linux/kernel.h @@ -28,6 +28,8 @@ (type *)((char *)__mptr - offsetof(type, member)); }) #endif +#define BUILD_BUG_ON_ZERO(e) (sizeof(struct { int:-!!(e); })) + #ifndef max #define max(x, y) ({ \ typeof(x) _max1 = (x); \ @@ -85,21 +87,25 @@ simple_strtoul(const char *nptr, char **endptr, int base) return strtoul(nptr, endptr, base); } +int eprintf(int level, + const char *fmt, ...) __attribute__((format(printf, 2, 3))); + #ifndef pr_fmt #define pr_fmt(fmt) fmt #endif #define pr_err(fmt, ...) \ - do { fprintf(stderr, pr_fmt(fmt), ##__VA_ARGS__); } while (0) + eprintf(0, pr_fmt(fmt), ##__VA_ARGS__) #define pr_warning(fmt, ...) \ - do { fprintf(stderr, pr_fmt(fmt), ##__VA_ARGS__); } while (0) + eprintf(0, pr_fmt(fmt), ##__VA_ARGS__) #define pr_info(fmt, ...) \ - do { fprintf(stderr, pr_fmt(fmt), ##__VA_ARGS__); } while (0) + eprintf(0, pr_fmt(fmt), ##__VA_ARGS__) #define pr_debug(fmt, ...) \ eprintf(1, pr_fmt(fmt), ##__VA_ARGS__) #define pr_debugN(n, fmt, ...) \ eprintf(n, pr_fmt(fmt), ##__VA_ARGS__) #define pr_debug2(fmt, ...) pr_debugN(2, pr_fmt(fmt), ##__VA_ARGS__) #define pr_debug3(fmt, ...) pr_debugN(3, pr_fmt(fmt), ##__VA_ARGS__) +#define pr_debug4(fmt, ...) pr_debugN(4, pr_fmt(fmt), ##__VA_ARGS__) #endif diff --git a/tools/perf/util/map.c b/tools/perf/util/map.c index c4d55a0da2ea..e672f2fef65b 100644 --- a/tools/perf/util/map.c +++ b/tools/perf/util/map.c @@ -1,9 +1,16 @@ -#include "event.h" #include "symbol.h" +#include <errno.h> +#include <limits.h> #include <stdlib.h> #include <string.h> #include <stdio.h> -#include "debug.h" +#include <unistd.h> +#include "map.h" + +const char *map_type__name[MAP__NR_TYPES] = { + [MAP__FUNCTION] = "Functions", + [MAP__VARIABLE] = "Variables", +}; static inline int is_anon_memory(const char *filename) { @@ -31,15 +38,16 @@ void map__init(struct map *self, enum map_type type, self->map_ip = map__map_ip; self->unmap_ip = map__unmap_ip; RB_CLEAR_NODE(&self->rb_node); + self->groups = NULL; } -struct map *map__new(struct mmap_event *event, enum map_type type, - char *cwd, int cwdlen) +struct map *map__new(struct list_head *dsos__list, u64 start, u64 len, + u64 pgoff, u32 pid, char *filename, + enum map_type type, char *cwd, int cwdlen) { struct map *self = malloc(sizeof(*self)); if (self != NULL) { - const char *filename = event->filename; char newfilename[PATH_MAX]; struct dso *dso; int anon; @@ -57,19 +65,23 @@ struct map *map__new(struct mmap_event *event, enum map_type type, anon = is_anon_memory(filename); if (anon) { - snprintf(newfilename, sizeof(newfilename), "/tmp/perf-%d.map", event->pid); + snprintf(newfilename, sizeof(newfilename), "/tmp/perf-%d.map", pid); filename = newfilename; } - dso = dsos__findnew(filename); + dso = __dsos__findnew(dsos__list, filename); if (dso == NULL) goto out_delete; - map__init(self, type, event->start, event->start + event->len, - event->pgoff, dso); + map__init(self, type, start, start + len, pgoff, dso); - if (self->dso == vdso || anon) + if (anon) { +set_identity: self->map_ip = self->unmap_ip = identity__map_ip; + } else if (strcmp(filename, "[vdso]") == 0) { + dso__set_loaded(dso, self->type); + goto set_identity; + } } return self; out_delete: @@ -104,8 +116,7 @@ void map__fixup_end(struct map *self) #define DSO__DELETED "(deleted)" -int map__load(struct map *self, struct perf_session *session, - symbol_filter_t filter) +int map__load(struct map *self, symbol_filter_t filter) { const char *name = self->dso->long_name; int nr; @@ -113,7 +124,7 @@ int map__load(struct map *self, struct perf_session *session, if (dso__loaded(self->dso, self->type)) return 0; - nr = dso__load(self->dso, self, session, filter); + nr = dso__load(self->dso, self, filter); if (nr < 0) { if (self->dso->has_build_id) { char sbuild_id[BUILD_ID_SIZE * 2 + 1]; @@ -144,24 +155,29 @@ int map__load(struct map *self, struct perf_session *session, return -1; } + /* + * Only applies to the kernel, as its symtabs aren't relative like the + * module ones. + */ + if (self->dso->kernel) + map__reloc_vmlinux(self); return 0; } -struct symbol *map__find_symbol(struct map *self, struct perf_session *session, - u64 addr, symbol_filter_t filter) +struct symbol *map__find_symbol(struct map *self, u64 addr, + symbol_filter_t filter) { - if (map__load(self, session, filter) < 0) + if (map__load(self, filter) < 0) return NULL; return dso__find_symbol(self->dso, self->type, addr); } struct symbol *map__find_symbol_by_name(struct map *self, const char *name, - struct perf_session *session, symbol_filter_t filter) { - if (map__load(self, session, filter) < 0) + if (map__load(self, filter) < 0) return NULL; if (!dso__sorted_by_name(self->dso, self->type)) @@ -201,3 +217,412 @@ size_t map__fprintf(struct map *self, FILE *fp) return fprintf(fp, " %Lx-%Lx %Lx %s\n", self->start, self->end, self->pgoff, self->dso->name); } + +/* + * objdump wants/reports absolute IPs for ET_EXEC, and RIPs for ET_DYN. + * map->dso->adjust_symbols==1 for ET_EXEC-like cases. + */ +u64 map__rip_2objdump(struct map *map, u64 rip) +{ + u64 addr = map->dso->adjust_symbols ? + map->unmap_ip(map, rip) : /* RIP -> IP */ + rip; + return addr; +} + +u64 map__objdump_2ip(struct map *map, u64 addr) +{ + u64 ip = map->dso->adjust_symbols ? + addr : + map->unmap_ip(map, addr); /* RIP -> IP */ + return ip; +} + +void map_groups__init(struct map_groups *self) +{ + int i; + for (i = 0; i < MAP__NR_TYPES; ++i) { + self->maps[i] = RB_ROOT; + INIT_LIST_HEAD(&self->removed_maps[i]); + } + self->machine = NULL; +} + +void map_groups__flush(struct map_groups *self) +{ + int type; + + for (type = 0; type < MAP__NR_TYPES; type++) { + struct rb_root *root = &self->maps[type]; + struct rb_node *next = rb_first(root); + + while (next) { + struct map *pos = rb_entry(next, struct map, rb_node); + next = rb_next(&pos->rb_node); + rb_erase(&pos->rb_node, root); + /* + * We may have references to this map, for + * instance in some hist_entry instances, so + * just move them to a separate list. + */ + list_add_tail(&pos->node, &self->removed_maps[pos->type]); + } + } +} + +struct symbol *map_groups__find_symbol(struct map_groups *self, + enum map_type type, u64 addr, + struct map **mapp, + symbol_filter_t filter) +{ + struct map *map = map_groups__find(self, type, addr); + + if (map != NULL) { + if (mapp != NULL) + *mapp = map; + return map__find_symbol(map, map->map_ip(map, addr), filter); + } + + return NULL; +} + +struct symbol *map_groups__find_symbol_by_name(struct map_groups *self, + enum map_type type, + const char *name, + struct map **mapp, + symbol_filter_t filter) +{ + struct rb_node *nd; + + for (nd = rb_first(&self->maps[type]); nd; nd = rb_next(nd)) { + struct map *pos = rb_entry(nd, struct map, rb_node); + struct symbol *sym = map__find_symbol_by_name(pos, name, filter); + + if (sym == NULL) + continue; + if (mapp != NULL) + *mapp = pos; + return sym; + } + + return NULL; +} + +size_t __map_groups__fprintf_maps(struct map_groups *self, + enum map_type type, int verbose, FILE *fp) +{ + size_t printed = fprintf(fp, "%s:\n", map_type__name[type]); + struct rb_node *nd; + + for (nd = rb_first(&self->maps[type]); nd; nd = rb_next(nd)) { + struct map *pos = rb_entry(nd, struct map, rb_node); + printed += fprintf(fp, "Map:"); + printed += map__fprintf(pos, fp); + if (verbose > 2) { + printed += dso__fprintf(pos->dso, type, fp); + printed += fprintf(fp, "--\n"); + } + } + + return printed; +} + +size_t map_groups__fprintf_maps(struct map_groups *self, int verbose, FILE *fp) +{ + size_t printed = 0, i; + for (i = 0; i < MAP__NR_TYPES; ++i) + printed += __map_groups__fprintf_maps(self, i, verbose, fp); + return printed; +} + +static size_t __map_groups__fprintf_removed_maps(struct map_groups *self, + enum map_type type, + int verbose, FILE *fp) +{ + struct map *pos; + size_t printed = 0; + + list_for_each_entry(pos, &self->removed_maps[type], node) { + printed += fprintf(fp, "Map:"); + printed += map__fprintf(pos, fp); + if (verbose > 1) { + printed += dso__fprintf(pos->dso, type, fp); + printed += fprintf(fp, "--\n"); + } + } + return printed; +} + +static size_t map_groups__fprintf_removed_maps(struct map_groups *self, + int verbose, FILE *fp) +{ + size_t printed = 0, i; + for (i = 0; i < MAP__NR_TYPES; ++i) + printed += __map_groups__fprintf_removed_maps(self, i, verbose, fp); + return printed; +} + +size_t map_groups__fprintf(struct map_groups *self, int verbose, FILE *fp) +{ + size_t printed = map_groups__fprintf_maps(self, verbose, fp); + printed += fprintf(fp, "Removed maps:\n"); + return printed + map_groups__fprintf_removed_maps(self, verbose, fp); +} + +int map_groups__fixup_overlappings(struct map_groups *self, struct map *map, + int verbose, FILE *fp) +{ + struct rb_root *root = &self->maps[map->type]; + struct rb_node *next = rb_first(root); + + while (next) { + struct map *pos = rb_entry(next, struct map, rb_node); + next = rb_next(&pos->rb_node); + + if (!map__overlap(pos, map)) + continue; + + if (verbose >= 2) { + fputs("overlapping maps:\n", fp); + map__fprintf(map, fp); + map__fprintf(pos, fp); + } + + rb_erase(&pos->rb_node, root); + /* + * We may have references to this map, for instance in some + * hist_entry instances, so just move them to a separate + * list. + */ + list_add_tail(&pos->node, &self->removed_maps[map->type]); + /* + * Now check if we need to create new maps for areas not + * overlapped by the new map: + */ + if (map->start > pos->start) { + struct map *before = map__clone(pos); + + if (before == NULL) + return -ENOMEM; + + before->end = map->start - 1; + map_groups__insert(self, before); + if (verbose >= 2) + map__fprintf(before, fp); + } + + if (map->end < pos->end) { + struct map *after = map__clone(pos); + + if (after == NULL) + return -ENOMEM; + + after->start = map->end + 1; + map_groups__insert(self, after); + if (verbose >= 2) + map__fprintf(after, fp); + } + } + + return 0; +} + +/* + * XXX This should not really _copy_ te maps, but refcount them. + */ +int map_groups__clone(struct map_groups *self, + struct map_groups *parent, enum map_type type) +{ + struct rb_node *nd; + for (nd = rb_first(&parent->maps[type]); nd; nd = rb_next(nd)) { + struct map *map = rb_entry(nd, struct map, rb_node); + struct map *new = map__clone(map); + if (new == NULL) + return -ENOMEM; + map_groups__insert(self, new); + } + return 0; +} + +static u64 map__reloc_map_ip(struct map *map, u64 ip) +{ + return ip + (s64)map->pgoff; +} + +static u64 map__reloc_unmap_ip(struct map *map, u64 ip) +{ + return ip - (s64)map->pgoff; +} + +void map__reloc_vmlinux(struct map *self) +{ + struct kmap *kmap = map__kmap(self); + s64 reloc; + + if (!kmap->ref_reloc_sym || !kmap->ref_reloc_sym->unrelocated_addr) + return; + + reloc = (kmap->ref_reloc_sym->unrelocated_addr - + kmap->ref_reloc_sym->addr); + + if (!reloc) + return; + + self->map_ip = map__reloc_map_ip; + self->unmap_ip = map__reloc_unmap_ip; + self->pgoff = reloc; +} + +void maps__insert(struct rb_root *maps, struct map *map) +{ + struct rb_node **p = &maps->rb_node; + struct rb_node *parent = NULL; + const u64 ip = map->start; + struct map *m; + + while (*p != NULL) { + parent = *p; + m = rb_entry(parent, struct map, rb_node); + if (ip < m->start) + p = &(*p)->rb_left; + else + p = &(*p)->rb_right; + } + + rb_link_node(&map->rb_node, parent, p); + rb_insert_color(&map->rb_node, maps); +} + +struct map *maps__find(struct rb_root *maps, u64 ip) +{ + struct rb_node **p = &maps->rb_node; + struct rb_node *parent = NULL; + struct map *m; + + while (*p != NULL) { + parent = *p; + m = rb_entry(parent, struct map, rb_node); + if (ip < m->start) + p = &(*p)->rb_left; + else if (ip > m->end) + p = &(*p)->rb_right; + else + return m; + } + + return NULL; +} + +int machine__init(struct machine *self, const char *root_dir, pid_t pid) +{ + map_groups__init(&self->kmaps); + RB_CLEAR_NODE(&self->rb_node); + INIT_LIST_HEAD(&self->user_dsos); + INIT_LIST_HEAD(&self->kernel_dsos); + + self->kmaps.machine = self; + self->pid = pid; + self->root_dir = strdup(root_dir); + return self->root_dir == NULL ? -ENOMEM : 0; +} + +struct machine *machines__add(struct rb_root *self, pid_t pid, + const char *root_dir) +{ + struct rb_node **p = &self->rb_node; + struct rb_node *parent = NULL; + struct machine *pos, *machine = malloc(sizeof(*machine)); + + if (!machine) + return NULL; + + if (machine__init(machine, root_dir, pid) != 0) { + free(machine); + return NULL; + } + + while (*p != NULL) { + parent = *p; + pos = rb_entry(parent, struct machine, rb_node); + if (pid < pos->pid) + p = &(*p)->rb_left; + else + p = &(*p)->rb_right; + } + + rb_link_node(&machine->rb_node, parent, p); + rb_insert_color(&machine->rb_node, self); + + return machine; +} + +struct machine *machines__find(struct rb_root *self, pid_t pid) +{ + struct rb_node **p = &self->rb_node; + struct rb_node *parent = NULL; + struct machine *machine; + struct machine *default_machine = NULL; + + while (*p != NULL) { + parent = *p; + machine = rb_entry(parent, struct machine, rb_node); + if (pid < machine->pid) + p = &(*p)->rb_left; + else if (pid > machine->pid) + p = &(*p)->rb_right; + else + return machine; + if (!machine->pid) + default_machine = machine; + } + + return default_machine; +} + +struct machine *machines__findnew(struct rb_root *self, pid_t pid) +{ + char path[PATH_MAX]; + const char *root_dir; + struct machine *machine = machines__find(self, pid); + + if (!machine || machine->pid != pid) { + if (pid == HOST_KERNEL_ID || pid == DEFAULT_GUEST_KERNEL_ID) + root_dir = ""; + else { + if (!symbol_conf.guestmount) + goto out; + sprintf(path, "%s/%d", symbol_conf.guestmount, pid); + if (access(path, R_OK)) { + pr_err("Can't access file %s\n", path); + goto out; + } + root_dir = path; + } + machine = machines__add(self, pid, root_dir); + } + +out: + return machine; +} + +void machines__process(struct rb_root *self, machine__process_t process, void *data) +{ + struct rb_node *nd; + + for (nd = rb_first(self); nd; nd = rb_next(nd)) { + struct machine *pos = rb_entry(nd, struct machine, rb_node); + process(pos, data); + } +} + +char *machine__mmap_name(struct machine *self, char *bf, size_t size) +{ + if (machine__is_host(self)) + snprintf(bf, size, "[%s]", "kernel.kallsyms"); + else if (machine__is_default_guest(self)) + snprintf(bf, size, "[%s]", "guest.kernel.kallsyms"); + else + snprintf(bf, size, "[%s.%d]", "guest.kernel.kallsyms", self->pid); + + return bf; +} diff --git a/tools/perf/util/map.h b/tools/perf/util/map.h new file mode 100644 index 000000000000..f39134512829 --- /dev/null +++ b/tools/perf/util/map.h @@ -0,0 +1,217 @@ +#ifndef __PERF_MAP_H +#define __PERF_MAP_H + +#include <linux/compiler.h> +#include <linux/list.h> +#include <linux/rbtree.h> +#include <stdio.h> +#include <stdbool.h> +#include "types.h" + +enum map_type { + MAP__FUNCTION = 0, + MAP__VARIABLE, +}; + +#define MAP__NR_TYPES (MAP__VARIABLE + 1) + +extern const char *map_type__name[MAP__NR_TYPES]; + +struct dso; +struct ref_reloc_sym; +struct map_groups; +struct machine; + +struct map { + union { + struct rb_node rb_node; + struct list_head node; + }; + u64 start; + u64 end; + enum map_type type; + u32 priv; + u64 pgoff; + + /* ip -> dso rip */ + u64 (*map_ip)(struct map *, u64); + /* dso rip -> ip */ + u64 (*unmap_ip)(struct map *, u64); + + struct dso *dso; + struct map_groups *groups; +}; + +struct kmap { + struct ref_reloc_sym *ref_reloc_sym; + struct map_groups *kmaps; +}; + +struct map_groups { + struct rb_root maps[MAP__NR_TYPES]; + struct list_head removed_maps[MAP__NR_TYPES]; + struct machine *machine; +}; + +/* Native host kernel uses -1 as pid index in machine */ +#define HOST_KERNEL_ID (-1) +#define DEFAULT_GUEST_KERNEL_ID (0) + +struct machine { + struct rb_node rb_node; + pid_t pid; + char *root_dir; + struct list_head user_dsos; + struct list_head kernel_dsos; + struct map_groups kmaps; + struct map *vmlinux_maps[MAP__NR_TYPES]; +}; + +static inline +struct map *machine__kernel_map(struct machine *self, enum map_type type) +{ + return self->vmlinux_maps[type]; +} + +static inline struct kmap *map__kmap(struct map *self) +{ + return (struct kmap *)(self + 1); +} + +static inline u64 map__map_ip(struct map *map, u64 ip) +{ + return ip - map->start + map->pgoff; +} + +static inline u64 map__unmap_ip(struct map *map, u64 ip) +{ + return ip + map->start - map->pgoff; +} + +static inline u64 identity__map_ip(struct map *map __used, u64 ip) +{ + return ip; +} + + +/* rip/ip <-> addr suitable for passing to `objdump --start-address=` */ +u64 map__rip_2objdump(struct map *map, u64 rip); +u64 map__objdump_2ip(struct map *map, u64 addr); + +struct symbol; + +typedef int (*symbol_filter_t)(struct map *map, struct symbol *sym); + +void map__init(struct map *self, enum map_type type, + u64 start, u64 end, u64 pgoff, struct dso *dso); +struct map *map__new(struct list_head *dsos__list, u64 start, u64 len, + u64 pgoff, u32 pid, char *filename, + enum map_type type, char *cwd, int cwdlen); +void map__delete(struct map *self); +struct map *map__clone(struct map *self); +int map__overlap(struct map *l, struct map *r); +size_t map__fprintf(struct map *self, FILE *fp); + +int map__load(struct map *self, symbol_filter_t filter); +struct symbol *map__find_symbol(struct map *self, + u64 addr, symbol_filter_t filter); +struct symbol *map__find_symbol_by_name(struct map *self, const char *name, + symbol_filter_t filter); +void map__fixup_start(struct map *self); +void map__fixup_end(struct map *self); + +void map__reloc_vmlinux(struct map *self); + +size_t __map_groups__fprintf_maps(struct map_groups *self, + enum map_type type, int verbose, FILE *fp); +void maps__insert(struct rb_root *maps, struct map *map); +struct map *maps__find(struct rb_root *maps, u64 addr); +void map_groups__init(struct map_groups *self); +int map_groups__clone(struct map_groups *self, + struct map_groups *parent, enum map_type type); +size_t map_groups__fprintf(struct map_groups *self, int verbose, FILE *fp); +size_t map_groups__fprintf_maps(struct map_groups *self, int verbose, FILE *fp); + +typedef void (*machine__process_t)(struct machine *self, void *data); + +void machines__process(struct rb_root *self, machine__process_t process, void *data); +struct machine *machines__add(struct rb_root *self, pid_t pid, + const char *root_dir); +struct machine *machines__find_host(struct rb_root *self); +struct machine *machines__find(struct rb_root *self, pid_t pid); +struct machine *machines__findnew(struct rb_root *self, pid_t pid); +char *machine__mmap_name(struct machine *self, char *bf, size_t size); +int machine__init(struct machine *self, const char *root_dir, pid_t pid); + +/* + * Default guest kernel is defined by parameter --guestkallsyms + * and --guestmodules + */ +static inline bool machine__is_default_guest(struct machine *self) +{ + return self ? self->pid == DEFAULT_GUEST_KERNEL_ID : false; +} + +static inline bool machine__is_host(struct machine *self) +{ + return self ? self->pid == HOST_KERNEL_ID : false; +} + +static inline void map_groups__insert(struct map_groups *self, struct map *map) +{ + maps__insert(&self->maps[map->type], map); + map->groups = self; +} + +static inline struct map *map_groups__find(struct map_groups *self, + enum map_type type, u64 addr) +{ + return maps__find(&self->maps[type], addr); +} + +struct symbol *map_groups__find_symbol(struct map_groups *self, + enum map_type type, u64 addr, + struct map **mapp, + symbol_filter_t filter); + +struct symbol *map_groups__find_symbol_by_name(struct map_groups *self, + enum map_type type, + const char *name, + struct map **mapp, + symbol_filter_t filter); + +static inline +struct symbol *machine__find_kernel_symbol(struct machine *self, + enum map_type type, u64 addr, + struct map **mapp, + symbol_filter_t filter) +{ + return map_groups__find_symbol(&self->kmaps, type, addr, mapp, filter); +} + +static inline +struct symbol *machine__find_kernel_function(struct machine *self, u64 addr, + struct map **mapp, + symbol_filter_t filter) +{ + return machine__find_kernel_symbol(self, MAP__FUNCTION, addr, mapp, filter); +} + +static inline +struct symbol *map_groups__find_function_by_name(struct map_groups *self, + const char *name, struct map **mapp, + symbol_filter_t filter) +{ + return map_groups__find_symbol_by_name(self, MAP__FUNCTION, name, mapp, filter); +} + +int map_groups__fixup_overlappings(struct map_groups *self, struct map *map, + int verbose, FILE *fp); + +struct map *map_groups__find_by_name(struct map_groups *self, + enum map_type type, const char *name); +struct map *machine__new_module(struct machine *self, u64 start, const char *filename); + +void map_groups__flush(struct map_groups *self); + +#endif /* __PERF_MAP_H */ diff --git a/tools/perf/util/newt.c b/tools/perf/util/newt.c new file mode 100644 index 000000000000..7537ca15900b --- /dev/null +++ b/tools/perf/util/newt.c @@ -0,0 +1,1178 @@ +#define _GNU_SOURCE +#include <stdio.h> +#undef _GNU_SOURCE +/* + * slang versions <= 2.0.6 have a "#if HAVE_LONG_LONG" that breaks + * the build if it isn't defined. Use the equivalent one that glibc + * has on features.h. + */ +#include <features.h> +#ifndef HAVE_LONG_LONG +#define HAVE_LONG_LONG __GLIBC_HAVE_LONG_LONG +#endif +#include <slang.h> +#include <stdlib.h> +#include <newt.h> +#include <sys/ttydefaults.h> + +#include "cache.h" +#include "hist.h" +#include "pstack.h" +#include "session.h" +#include "sort.h" +#include "symbol.h" + +#if SLANG_VERSION < 20104 +#define slsmg_printf(msg, args...) SLsmg_printf((char *)msg, ##args) +#define slsmg_write_nstring(msg, len) SLsmg_write_nstring((char *)msg, len) +#define sltt_set_color(obj, name, fg, bg) SLtt_set_color(obj,(char *)name,\ + (char *)fg, (char *)bg) +#else +#define slsmg_printf SLsmg_printf +#define slsmg_write_nstring SLsmg_write_nstring +#define sltt_set_color SLtt_set_color +#endif + +struct ui_progress { + newtComponent form, scale; +}; + +struct ui_progress *ui_progress__new(const char *title, u64 total) +{ + struct ui_progress *self = malloc(sizeof(*self)); + + if (self != NULL) { + int cols; + + if (use_browser <= 0) + return self; + newtGetScreenSize(&cols, NULL); + cols -= 4; + newtCenteredWindow(cols, 1, title); + self->form = newtForm(NULL, NULL, 0); + if (self->form == NULL) + goto out_free_self; + self->scale = newtScale(0, 0, cols, total); + if (self->scale == NULL) + goto out_free_form; + newtFormAddComponent(self->form, self->scale); + newtRefresh(); + } + + return self; + +out_free_form: + newtFormDestroy(self->form); +out_free_self: + free(self); + return NULL; +} + +void ui_progress__update(struct ui_progress *self, u64 curr) +{ + /* + * FIXME: We should have a per UI backend way of showing progress, + * stdio will just show a percentage as NN%, etc. + */ + if (use_browser <= 0) + return; + newtScaleSet(self->scale, curr); + newtRefresh(); +} + +void ui_progress__delete(struct ui_progress *self) +{ + if (use_browser > 0) { + newtFormDestroy(self->form); + newtPopWindow(); + } + free(self); +} + +static void ui_helpline__pop(void) +{ + newtPopHelpLine(); +} + +static void ui_helpline__push(const char *msg) +{ + newtPushHelpLine(msg); +} + +static void ui_helpline__vpush(const char *fmt, va_list ap) +{ + char *s; + + if (vasprintf(&s, fmt, ap) < 0) + vfprintf(stderr, fmt, ap); + else { + ui_helpline__push(s); + free(s); + } +} + +static void ui_helpline__fpush(const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + ui_helpline__vpush(fmt, ap); + va_end(ap); +} + +static void ui_helpline__puts(const char *msg) +{ + ui_helpline__pop(); + ui_helpline__push(msg); +} + +static char browser__last_msg[1024]; + +int browser__show_help(const char *format, va_list ap) +{ + int ret; + static int backlog; + + ret = vsnprintf(browser__last_msg + backlog, + sizeof(browser__last_msg) - backlog, format, ap); + backlog += ret; + + if (browser__last_msg[backlog - 1] == '\n') { + ui_helpline__puts(browser__last_msg); + newtRefresh(); + backlog = 0; + } + + return ret; +} + +static void newt_form__set_exit_keys(newtComponent self) +{ + newtFormAddHotKey(self, NEWT_KEY_LEFT); + newtFormAddHotKey(self, NEWT_KEY_ESCAPE); + newtFormAddHotKey(self, 'Q'); + newtFormAddHotKey(self, 'q'); + newtFormAddHotKey(self, CTRL('c')); +} + +static newtComponent newt_form__new(void) +{ + newtComponent self = newtForm(NULL, NULL, 0); + if (self) + newt_form__set_exit_keys(self); + return self; +} + +static int popup_menu(int argc, char * const argv[]) +{ + struct newtExitStruct es; + int i, rc = -1, max_len = 5; + newtComponent listbox, form = newt_form__new(); + + if (form == NULL) + return -1; + + listbox = newtListbox(0, 0, argc, NEWT_FLAG_RETURNEXIT); + if (listbox == NULL) + goto out_destroy_form; + + newtFormAddComponent(form, listbox); + + for (i = 0; i < argc; ++i) { + int len = strlen(argv[i]); + if (len > max_len) + max_len = len; + if (newtListboxAddEntry(listbox, argv[i], (void *)(long)i)) + goto out_destroy_form; + } + + newtCenteredWindow(max_len, argc, NULL); + newtFormRun(form, &es); + rc = newtListboxGetCurrent(listbox) - NULL; + if (es.reason == NEWT_EXIT_HOTKEY) + rc = -1; + newtPopWindow(); +out_destroy_form: + newtFormDestroy(form); + return rc; +} + +static int ui__help_window(const char *text) +{ + struct newtExitStruct es; + newtComponent tb, form = newt_form__new(); + int rc = -1; + int max_len = 0, nr_lines = 0; + const char *t; + + if (form == NULL) + return -1; + + t = text; + while (1) { + const char *sep = strchr(t, '\n'); + int len; + + if (sep == NULL) + sep = strchr(t, '\0'); + len = sep - t; + if (max_len < len) + max_len = len; + ++nr_lines; + if (*sep == '\0') + break; + t = sep + 1; + } + + tb = newtTextbox(0, 0, max_len, nr_lines, 0); + if (tb == NULL) + goto out_destroy_form; + + newtTextboxSetText(tb, text); + newtFormAddComponent(form, tb); + newtCenteredWindow(max_len, nr_lines, NULL); + newtFormRun(form, &es); + newtPopWindow(); + rc = 0; +out_destroy_form: + newtFormDestroy(form); + return rc; +} + +static bool dialog_yesno(const char *msg) +{ + /* newtWinChoice should really be accepting const char pointers... */ + char yes[] = "Yes", no[] = "No"; + return newtWinChoice(NULL, yes, no, (char *)msg) == 1; +} + +static void ui__error_window(const char *fmt, ...) +{ + va_list ap; + + va_start(ap, fmt); + newtWinMessagev((char *)"Error", (char *)"Ok", (char *)fmt, ap); + va_end(ap); +} + +#define HE_COLORSET_TOP 50 +#define HE_COLORSET_MEDIUM 51 +#define HE_COLORSET_NORMAL 52 +#define HE_COLORSET_SELECTED 53 +#define HE_COLORSET_CODE 54 + +static int ui_browser__percent_color(double percent, bool current) +{ + if (current) + return HE_COLORSET_SELECTED; + if (percent >= MIN_RED) + return HE_COLORSET_TOP; + if (percent >= MIN_GREEN) + return HE_COLORSET_MEDIUM; + return HE_COLORSET_NORMAL; +} + +struct ui_browser { + newtComponent form, sb; + u64 index, first_visible_entry_idx; + void *first_visible_entry, *entries; + u16 top, left, width, height; + void *priv; + u32 nr_entries; +}; + +static void ui_browser__refresh_dimensions(struct ui_browser *self) +{ + int cols, rows; + newtGetScreenSize(&cols, &rows); + + if (self->width > cols - 4) + self->width = cols - 4; + self->height = rows - 5; + if (self->height > self->nr_entries) + self->height = self->nr_entries; + self->top = (rows - self->height) / 2; + self->left = (cols - self->width) / 2; +} + +static void ui_browser__reset_index(struct ui_browser *self) +{ + self->index = self->first_visible_entry_idx = 0; + self->first_visible_entry = NULL; +} + +static int objdump_line__show(struct objdump_line *self, struct list_head *head, + int width, struct hist_entry *he, int len, + bool current_entry) +{ + if (self->offset != -1) { + struct symbol *sym = he->ms.sym; + unsigned int hits = 0; + double percent = 0.0; + int color; + struct sym_priv *priv = symbol__priv(sym); + struct sym_ext *sym_ext = priv->ext; + struct sym_hist *h = priv->hist; + s64 offset = self->offset; + struct objdump_line *next = objdump__get_next_ip_line(head, self); + + while (offset < (s64)len && + (next == NULL || offset < next->offset)) { + if (sym_ext) { + percent += sym_ext[offset].percent; + } else + hits += h->ip[offset]; + + ++offset; + } + + if (sym_ext == NULL && h->sum) + percent = 100.0 * hits / h->sum; + + color = ui_browser__percent_color(percent, current_entry); + SLsmg_set_color(color); + slsmg_printf(" %7.2f ", percent); + if (!current_entry) + SLsmg_set_color(HE_COLORSET_CODE); + } else { + int color = ui_browser__percent_color(0, current_entry); + SLsmg_set_color(color); + slsmg_write_nstring(" ", 9); + } + + SLsmg_write_char(':'); + slsmg_write_nstring(" ", 8); + if (!*self->line) + slsmg_write_nstring(" ", width - 18); + else + slsmg_write_nstring(self->line, width - 18); + + return 0; +} + +static int ui_browser__refresh_entries(struct ui_browser *self) +{ + struct objdump_line *pos; + struct list_head *head = self->entries; + struct hist_entry *he = self->priv; + int row = 0; + int len = he->ms.sym->end - he->ms.sym->start; + + if (self->first_visible_entry == NULL || self->first_visible_entry == self->entries) + self->first_visible_entry = head->next; + + pos = list_entry(self->first_visible_entry, struct objdump_line, node); + + list_for_each_entry_from(pos, head, node) { + bool current_entry = (self->first_visible_entry_idx + row) == self->index; + SLsmg_gotorc(self->top + row, self->left); + objdump_line__show(pos, head, self->width, + he, len, current_entry); + if (++row == self->height) + break; + } + + SLsmg_set_color(HE_COLORSET_NORMAL); + SLsmg_fill_region(self->top + row, self->left, + self->height - row, self->width, ' '); + + return 0; +} + +static int ui_browser__run(struct ui_browser *self, const char *title, + struct newtExitStruct *es) +{ + if (self->form) { + newtFormDestroy(self->form); + newtPopWindow(); + } + + ui_browser__refresh_dimensions(self); + newtCenteredWindow(self->width + 2, self->height, title); + self->form = newt_form__new(); + if (self->form == NULL) + return -1; + + self->sb = newtVerticalScrollbar(self->width + 1, 0, self->height, + HE_COLORSET_NORMAL, + HE_COLORSET_SELECTED); + if (self->sb == NULL) + return -1; + + newtFormAddHotKey(self->form, NEWT_KEY_UP); + newtFormAddHotKey(self->form, NEWT_KEY_DOWN); + newtFormAddHotKey(self->form, NEWT_KEY_PGUP); + newtFormAddHotKey(self->form, NEWT_KEY_PGDN); + newtFormAddHotKey(self->form, ' '); + newtFormAddHotKey(self->form, NEWT_KEY_HOME); + newtFormAddHotKey(self->form, NEWT_KEY_END); + newtFormAddHotKey(self->form, NEWT_KEY_TAB); + newtFormAddHotKey(self->form, NEWT_KEY_RIGHT); + + if (ui_browser__refresh_entries(self) < 0) + return -1; + newtFormAddComponent(self->form, self->sb); + + while (1) { + unsigned int offset; + + newtFormRun(self->form, es); + + if (es->reason != NEWT_EXIT_HOTKEY) + break; + if (is_exit_key(es->u.key)) + return es->u.key; + switch (es->u.key) { + case NEWT_KEY_DOWN: + if (self->index == self->nr_entries - 1) + break; + ++self->index; + if (self->index == self->first_visible_entry_idx + self->height) { + struct list_head *pos = self->first_visible_entry; + ++self->first_visible_entry_idx; + self->first_visible_entry = pos->next; + } + break; + case NEWT_KEY_UP: + if (self->index == 0) + break; + --self->index; + if (self->index < self->first_visible_entry_idx) { + struct list_head *pos = self->first_visible_entry; + --self->first_visible_entry_idx; + self->first_visible_entry = pos->prev; + } + break; + case NEWT_KEY_PGDN: + case ' ': + if (self->first_visible_entry_idx + self->height > self->nr_entries - 1) + break; + + offset = self->height; + if (self->index + offset > self->nr_entries - 1) + offset = self->nr_entries - 1 - self->index; + self->index += offset; + self->first_visible_entry_idx += offset; + + while (offset--) { + struct list_head *pos = self->first_visible_entry; + self->first_visible_entry = pos->next; + } + + break; + case NEWT_KEY_PGUP: + if (self->first_visible_entry_idx == 0) + break; + + if (self->first_visible_entry_idx < self->height) + offset = self->first_visible_entry_idx; + else + offset = self->height; + + self->index -= offset; + self->first_visible_entry_idx -= offset; + + while (offset--) { + struct list_head *pos = self->first_visible_entry; + self->first_visible_entry = pos->prev; + } + break; + case NEWT_KEY_HOME: + ui_browser__reset_index(self); + break; + case NEWT_KEY_END: { + struct list_head *head = self->entries; + offset = self->height - 1; + + if (offset > self->nr_entries) + offset = self->nr_entries; + + self->index = self->first_visible_entry_idx = self->nr_entries - 1 - offset; + self->first_visible_entry = head->prev; + while (offset-- != 0) { + struct list_head *pos = self->first_visible_entry; + self->first_visible_entry = pos->prev; + } + } + break; + case NEWT_KEY_RIGHT: + case NEWT_KEY_LEFT: + case NEWT_KEY_TAB: + return es->u.key; + default: + continue; + } + if (ui_browser__refresh_entries(self) < 0) + return -1; + } + return 0; +} + +/* + * When debugging newt problems it was useful to be able to "unroll" + * the calls to newtCheckBoxTreeAdd{Array,Item}, so that we can generate + * a source file with the sequence of calls to these methods, to then + * tweak the arrays to get the intended results, so I'm keeping this code + * here, may be useful again in the future. + */ +#undef NEWT_DEBUG + +static void newt_checkbox_tree__add(newtComponent tree, const char *str, + void *priv, int *indexes) +{ +#ifdef NEWT_DEBUG + /* Print the newtCheckboxTreeAddArray to tinker with its index arrays */ + int i = 0, len = 40 - strlen(str); + + fprintf(stderr, + "\tnewtCheckboxTreeAddItem(tree, %*.*s\"%s\", (void *)%p, 0, ", + len, len, " ", str, priv); + while (indexes[i] != NEWT_ARG_LAST) { + if (indexes[i] != NEWT_ARG_APPEND) + fprintf(stderr, " %d,", indexes[i]); + else + fprintf(stderr, " %s,", "NEWT_ARG_APPEND"); + ++i; + } + fprintf(stderr, " %s", " NEWT_ARG_LAST);\n"); + fflush(stderr); +#endif + newtCheckboxTreeAddArray(tree, str, priv, 0, indexes); +} + +static char *callchain_list__sym_name(struct callchain_list *self, + char *bf, size_t bfsize) +{ + if (self->ms.sym) + return self->ms.sym->name; + + snprintf(bf, bfsize, "%#Lx", self->ip); + return bf; +} + +static void __callchain__append_graph_browser(struct callchain_node *self, + newtComponent tree, u64 total, + int *indexes, int depth) +{ + struct rb_node *node; + u64 new_total, remaining; + int idx = 0; + + if (callchain_param.mode == CHAIN_GRAPH_REL) + new_total = self->children_hit; + else + new_total = total; + + remaining = new_total; + node = rb_first(&self->rb_root); + while (node) { + struct callchain_node *child = rb_entry(node, struct callchain_node, rb_node); + struct rb_node *next = rb_next(node); + u64 cumul = cumul_hits(child); + struct callchain_list *chain; + int first = true, printed = 0; + int chain_idx = -1; + remaining -= cumul; + + indexes[depth] = NEWT_ARG_APPEND; + indexes[depth + 1] = NEWT_ARG_LAST; + + list_for_each_entry(chain, &child->val, list) { + char ipstr[BITS_PER_LONG / 4 + 1], + *alloc_str = NULL; + const char *str = callchain_list__sym_name(chain, ipstr, sizeof(ipstr)); + + if (first) { + double percent = cumul * 100.0 / new_total; + + first = false; + if (asprintf(&alloc_str, "%2.2f%% %s", percent, str) < 0) + str = "Not enough memory!"; + else + str = alloc_str; + } else { + indexes[depth] = idx; + indexes[depth + 1] = NEWT_ARG_APPEND; + indexes[depth + 2] = NEWT_ARG_LAST; + ++chain_idx; + } + newt_checkbox_tree__add(tree, str, &chain->ms, indexes); + free(alloc_str); + ++printed; + } + + indexes[depth] = idx; + if (chain_idx != -1) + indexes[depth + 1] = chain_idx; + if (printed != 0) + ++idx; + __callchain__append_graph_browser(child, tree, new_total, indexes, + depth + (chain_idx != -1 ? 2 : 1)); + node = next; + } +} + +static void callchain__append_graph_browser(struct callchain_node *self, + newtComponent tree, u64 total, + int *indexes, int parent_idx) +{ + struct callchain_list *chain; + int i = 0; + + indexes[1] = NEWT_ARG_APPEND; + indexes[2] = NEWT_ARG_LAST; + + list_for_each_entry(chain, &self->val, list) { + char ipstr[BITS_PER_LONG / 4 + 1], *str; + + if (chain->ip >= PERF_CONTEXT_MAX) + continue; + + if (!i++ && sort__first_dimension == SORT_SYM) + continue; + + str = callchain_list__sym_name(chain, ipstr, sizeof(ipstr)); + newt_checkbox_tree__add(tree, str, &chain->ms, indexes); + } + + indexes[1] = parent_idx; + indexes[2] = NEWT_ARG_APPEND; + indexes[3] = NEWT_ARG_LAST; + __callchain__append_graph_browser(self, tree, total, indexes, 2); +} + +static void hist_entry__append_callchain_browser(struct hist_entry *self, + newtComponent tree, u64 total, int parent_idx) +{ + struct rb_node *rb_node; + int indexes[1024] = { [0] = parent_idx, }; + int idx = 0; + struct callchain_node *chain; + + rb_node = rb_first(&self->sorted_chain); + while (rb_node) { + chain = rb_entry(rb_node, struct callchain_node, rb_node); + switch (callchain_param.mode) { + case CHAIN_FLAT: + break; + case CHAIN_GRAPH_ABS: /* falldown */ + case CHAIN_GRAPH_REL: + callchain__append_graph_browser(chain, tree, total, indexes, idx++); + break; + case CHAIN_NONE: + default: + break; + } + rb_node = rb_next(rb_node); + } +} + +static size_t hist_entry__append_browser(struct hist_entry *self, + newtComponent tree, u64 total) +{ + char s[256]; + size_t ret; + + if (symbol_conf.exclude_other && !self->parent) + return 0; + + ret = hist_entry__snprintf(self, s, sizeof(s), NULL, + false, 0, false, total); + if (symbol_conf.use_callchain) { + int indexes[2]; + + indexes[0] = NEWT_ARG_APPEND; + indexes[1] = NEWT_ARG_LAST; + newt_checkbox_tree__add(tree, s, &self->ms, indexes); + } else + newtListboxAppendEntry(tree, s, &self->ms); + + return ret; +} + +int hist_entry__tui_annotate(struct hist_entry *self) +{ + struct ui_browser browser; + struct newtExitStruct es; + struct objdump_line *pos, *n; + LIST_HEAD(head); + int ret; + + if (self->ms.sym == NULL) + return -1; + + if (self->ms.map->dso->annotate_warned) + return -1; + + if (hist_entry__annotate(self, &head) < 0) { + ui__error_window(browser__last_msg); + return -1; + } + + ui_helpline__push("Press <- or ESC to exit"); + + memset(&browser, 0, sizeof(browser)); + browser.entries = &head; + browser.priv = self; + list_for_each_entry(pos, &head, node) { + size_t line_len = strlen(pos->line); + if (browser.width < line_len) + browser.width = line_len; + ++browser.nr_entries; + } + + browser.width += 18; /* Percentage */ + ret = ui_browser__run(&browser, self->ms.sym->name, &es); + newtFormDestroy(browser.form); + newtPopWindow(); + list_for_each_entry_safe(pos, n, &head, node) { + list_del(&pos->node); + objdump_line__free(pos); + } + ui_helpline__pop(); + return ret; +} + +static const void *newt__symbol_tree_get_current(newtComponent self) +{ + if (symbol_conf.use_callchain) + return newtCheckboxTreeGetCurrent(self); + return newtListboxGetCurrent(self); +} + +static void hist_browser__selection(newtComponent self, void *data) +{ + const struct map_symbol **symbol_ptr = data; + *symbol_ptr = newt__symbol_tree_get_current(self); +} + +struct hist_browser { + newtComponent form, tree; + const struct map_symbol *selection; +}; + +static struct hist_browser *hist_browser__new(void) +{ + struct hist_browser *self = malloc(sizeof(*self)); + + if (self != NULL) + self->form = NULL; + + return self; +} + +static void hist_browser__delete(struct hist_browser *self) +{ + newtFormDestroy(self->form); + newtPopWindow(); + free(self); +} + +static int hist_browser__populate(struct hist_browser *self, struct hists *hists, + const char *title) +{ + int max_len = 0, idx, cols, rows; + struct ui_progress *progress; + struct rb_node *nd; + u64 curr_hist = 0; + char seq[] = ".", unit; + char str[256]; + unsigned long nr_events = hists->stats.nr_events[PERF_RECORD_SAMPLE]; + + if (self->form) { + newtFormDestroy(self->form); + newtPopWindow(); + } + + nr_events = convert_unit(nr_events, &unit); + snprintf(str, sizeof(str), "Events: %lu%c ", + nr_events, unit); + newtDrawRootText(0, 0, str); + + newtGetScreenSize(NULL, &rows); + + if (symbol_conf.use_callchain) + self->tree = newtCheckboxTreeMulti(0, 0, rows - 5, seq, + NEWT_FLAG_SCROLL); + else + self->tree = newtListbox(0, 0, rows - 5, + (NEWT_FLAG_SCROLL | + NEWT_FLAG_RETURNEXIT)); + + newtComponentAddCallback(self->tree, hist_browser__selection, + &self->selection); + + progress = ui_progress__new("Adding entries to the browser...", + hists->nr_entries); + if (progress == NULL) + return -1; + + idx = 0; + for (nd = rb_first(&hists->entries); nd; nd = rb_next(nd)) { + struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node); + int len; + + if (h->filtered) + continue; + + len = hist_entry__append_browser(h, self->tree, hists->stats.total_period); + if (len > max_len) + max_len = len; + if (symbol_conf.use_callchain) + hist_entry__append_callchain_browser(h, self->tree, + hists->stats.total_period, idx++); + ++curr_hist; + if (curr_hist % 5) + ui_progress__update(progress, curr_hist); + } + + ui_progress__delete(progress); + + newtGetScreenSize(&cols, &rows); + + if (max_len > cols) + max_len = cols - 3; + + if (!symbol_conf.use_callchain) + newtListboxSetWidth(self->tree, max_len); + + newtCenteredWindow(max_len + (symbol_conf.use_callchain ? 5 : 0), + rows - 5, title); + self->form = newt_form__new(); + if (self->form == NULL) + return -1; + + newtFormAddHotKey(self->form, 'A'); + newtFormAddHotKey(self->form, 'a'); + newtFormAddHotKey(self->form, 'D'); + newtFormAddHotKey(self->form, 'd'); + newtFormAddHotKey(self->form, 'T'); + newtFormAddHotKey(self->form, 't'); + newtFormAddHotKey(self->form, '?'); + newtFormAddHotKey(self->form, 'H'); + newtFormAddHotKey(self->form, 'h'); + newtFormAddHotKey(self->form, NEWT_KEY_F1); + newtFormAddHotKey(self->form, NEWT_KEY_RIGHT); + newtFormAddHotKey(self->form, NEWT_KEY_TAB); + newtFormAddHotKey(self->form, NEWT_KEY_UNTAB); + newtFormAddComponents(self->form, self->tree, NULL); + self->selection = newt__symbol_tree_get_current(self->tree); + + return 0; +} + +static struct hist_entry *hist_browser__selected_entry(struct hist_browser *self) +{ + int *indexes; + + if (!symbol_conf.use_callchain) + goto out; + + indexes = newtCheckboxTreeFindItem(self->tree, (void *)self->selection); + if (indexes) { + bool is_hist_entry = indexes[1] == NEWT_ARG_LAST; + free(indexes); + if (is_hist_entry) + goto out; + } + return NULL; +out: + return container_of(self->selection, struct hist_entry, ms); +} + +static struct thread *hist_browser__selected_thread(struct hist_browser *self) +{ + struct hist_entry *he = hist_browser__selected_entry(self); + return he ? he->thread : NULL; +} + +static int hist_browser__title(char *bf, size_t size, const char *ev_name, + const struct dso *dso, const struct thread *thread) +{ + int printed = 0; + + if (thread) + printed += snprintf(bf + printed, size - printed, + "Thread: %s(%d)", + (thread->comm_set ? thread->comm : ""), + thread->pid); + if (dso) + printed += snprintf(bf + printed, size - printed, + "%sDSO: %s", thread ? " " : "", + dso->short_name); + return printed ?: snprintf(bf, size, "Event: %s", ev_name); +} + +int hists__browse(struct hists *self, const char *helpline, const char *ev_name) +{ + struct hist_browser *browser = hist_browser__new(); + struct pstack *fstack; + const struct thread *thread_filter = NULL; + const struct dso *dso_filter = NULL; + struct newtExitStruct es; + char msg[160]; + int key = -1; + + if (browser == NULL) + return -1; + + fstack = pstack__new(2); + if (fstack == NULL) + goto out; + + ui_helpline__push(helpline); + + hist_browser__title(msg, sizeof(msg), ev_name, + dso_filter, thread_filter); + if (hist_browser__populate(browser, self, msg) < 0) + goto out_free_stack; + + while (1) { + const struct thread *thread; + const struct dso *dso; + char *options[16]; + int nr_options = 0, choice = 0, i, + annotate = -2, zoom_dso = -2, zoom_thread = -2; + + newtFormRun(browser->form, &es); + + thread = hist_browser__selected_thread(browser); + dso = browser->selection->map ? browser->selection->map->dso : NULL; + + if (es.reason == NEWT_EXIT_HOTKEY) { + key = es.u.key; + + switch (key) { + case NEWT_KEY_F1: + goto do_help; + case NEWT_KEY_TAB: + case NEWT_KEY_UNTAB: + /* + * Exit the browser, let hists__browser_tree + * go to the next or previous + */ + goto out_free_stack; + default:; + } + + key = toupper(key); + switch (key) { + case 'A': + if (browser->selection->map == NULL && + browser->selection->map->dso->annotate_warned) + continue; + goto do_annotate; + case 'D': + goto zoom_dso; + case 'T': + goto zoom_thread; + case 'H': + case '?': +do_help: + ui__help_window("-> Zoom into DSO/Threads & Annotate current symbol\n" + "<- Zoom out\n" + "a Annotate current symbol\n" + "h/?/F1 Show this window\n" + "d Zoom into current DSO\n" + "t Zoom into current Thread\n" + "q/CTRL+C Exit browser"); + continue; + default:; + } + if (is_exit_key(key)) { + if (key == NEWT_KEY_ESCAPE) { + if (dialog_yesno("Do you really want to exit?")) + break; + else + continue; + } else + break; + } + + if (es.u.key == NEWT_KEY_LEFT) { + const void *top; + + if (pstack__empty(fstack)) + continue; + top = pstack__pop(fstack); + if (top == &dso_filter) + goto zoom_out_dso; + if (top == &thread_filter) + goto zoom_out_thread; + continue; + } + } + + if (browser->selection->sym != NULL && + !browser->selection->map->dso->annotate_warned && + asprintf(&options[nr_options], "Annotate %s", + browser->selection->sym->name) > 0) + annotate = nr_options++; + + if (thread != NULL && + asprintf(&options[nr_options], "Zoom %s %s(%d) thread", + (thread_filter ? "out of" : "into"), + (thread->comm_set ? thread->comm : ""), + thread->pid) > 0) + zoom_thread = nr_options++; + + if (dso != NULL && + asprintf(&options[nr_options], "Zoom %s %s DSO", + (dso_filter ? "out of" : "into"), + (dso->kernel ? "the Kernel" : dso->short_name)) > 0) + zoom_dso = nr_options++; + + options[nr_options++] = (char *)"Exit"; + + choice = popup_menu(nr_options, options); + + for (i = 0; i < nr_options - 1; ++i) + free(options[i]); + + if (choice == nr_options - 1) + break; + + if (choice == -1) + continue; + + if (choice == annotate) { + struct hist_entry *he; +do_annotate: + if (browser->selection->map->dso->origin == DSO__ORIG_KERNEL) { + browser->selection->map->dso->annotate_warned = 1; + ui_helpline__puts("No vmlinux file found, can't " + "annotate with just a " + "kallsyms file"); + continue; + } + + he = hist_browser__selected_entry(browser); + if (he == NULL) + continue; + + hist_entry__tui_annotate(he); + } else if (choice == zoom_dso) { +zoom_dso: + if (dso_filter) { + pstack__remove(fstack, &dso_filter); +zoom_out_dso: + ui_helpline__pop(); + dso_filter = NULL; + } else { + if (dso == NULL) + continue; + ui_helpline__fpush("To zoom out press <- or -> + \"Zoom out of %s DSO\"", + dso->kernel ? "the Kernel" : dso->short_name); + dso_filter = dso; + pstack__push(fstack, &dso_filter); + } + hists__filter_by_dso(self, dso_filter); + hist_browser__title(msg, sizeof(msg), ev_name, + dso_filter, thread_filter); + if (hist_browser__populate(browser, self, msg) < 0) + goto out; + } else if (choice == zoom_thread) { +zoom_thread: + if (thread_filter) { + pstack__remove(fstack, &thread_filter); +zoom_out_thread: + ui_helpline__pop(); + thread_filter = NULL; + } else { + ui_helpline__fpush("To zoom out press <- or -> + \"Zoom out of %s(%d) thread\"", + thread->comm_set ? thread->comm : "", + thread->pid); + thread_filter = thread; + pstack__push(fstack, &thread_filter); + } + hists__filter_by_thread(self, thread_filter); + hist_browser__title(msg, sizeof(msg), ev_name, + dso_filter, thread_filter); + if (hist_browser__populate(browser, self, msg) < 0) + goto out; + } + } +out_free_stack: + pstack__delete(fstack); +out: + hist_browser__delete(browser); + return key; +} + +int hists__tui_browse_tree(struct rb_root *self, const char *help) +{ + struct rb_node *first = rb_first(self), *nd = first, *next; + int key = 0; + + while (nd) { + struct hists *hists = rb_entry(nd, struct hists, rb_node); + const char *ev_name = __event_name(hists->type, hists->config); + + key = hists__browse(hists, help, ev_name); + + if (is_exit_key(key)) + break; + + switch (key) { + case NEWT_KEY_TAB: + next = rb_next(nd); + if (next) + nd = next; + break; + case NEWT_KEY_UNTAB: + if (nd == first) + continue; + nd = rb_prev(nd); + default: + break; + } + } + + return key; +} + +static struct newtPercentTreeColors { + const char *topColorFg, *topColorBg; + const char *mediumColorFg, *mediumColorBg; + const char *normalColorFg, *normalColorBg; + const char *selColorFg, *selColorBg; + const char *codeColorFg, *codeColorBg; +} defaultPercentTreeColors = { + "red", "lightgray", + "green", "lightgray", + "black", "lightgray", + "lightgray", "magenta", + "blue", "lightgray", +}; + +void setup_browser(void) +{ + struct newtPercentTreeColors *c = &defaultPercentTreeColors; + + if (!isatty(1) || !use_browser || dump_trace) { + use_browser = 0; + setup_pager(); + return; + } + + use_browser = 1; + newtInit(); + newtCls(); + ui_helpline__puts(" "); + sltt_set_color(HE_COLORSET_TOP, NULL, c->topColorFg, c->topColorBg); + sltt_set_color(HE_COLORSET_MEDIUM, NULL, c->mediumColorFg, c->mediumColorBg); + sltt_set_color(HE_COLORSET_NORMAL, NULL, c->normalColorFg, c->normalColorBg); + sltt_set_color(HE_COLORSET_SELECTED, NULL, c->selColorFg, c->selColorBg); + sltt_set_color(HE_COLORSET_CODE, NULL, c->codeColorFg, c->codeColorBg); +} + +void exit_browser(bool wait_for_ok) +{ + if (use_browser > 0) { + if (wait_for_ok) { + char title[] = "Fatal Error", ok[] = "Ok"; + newtWinMessage(title, ok, browser__last_msg); + } + newtFinished(); + } +} diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index e5bc0fb016b2..9bf0f402ca73 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -5,6 +5,7 @@ #include "parse-events.h" #include "exec_cmd.h" #include "string.h" +#include "symbol.h" #include "cache.h" #include "header.h" #include "debugfs.h" @@ -409,7 +410,6 @@ static enum event_result parse_single_tracepoint_event(char *sys_name, const char *evt_name, unsigned int evt_length, - char *flags, struct perf_event_attr *attr, const char **strp) { @@ -418,14 +418,6 @@ parse_single_tracepoint_event(char *sys_name, u64 id; int fd; - if (flags) { - if (!strncmp(flags, "record", strlen(flags))) { - attr->sample_type |= PERF_SAMPLE_RAW; - attr->sample_type |= PERF_SAMPLE_TIME; - attr->sample_type |= PERF_SAMPLE_CPU; - } - } - snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", debugfs_path, sys_name, evt_name); @@ -444,13 +436,21 @@ parse_single_tracepoint_event(char *sys_name, attr->type = PERF_TYPE_TRACEPOINT; *strp = evt_name + evt_length; + attr->sample_type |= PERF_SAMPLE_RAW; + attr->sample_type |= PERF_SAMPLE_TIME; + attr->sample_type |= PERF_SAMPLE_CPU; + + attr->sample_period = 1; + + return EVT_HANDLED; } /* sys + ':' + event + ':' + flags*/ #define MAX_EVOPT_LEN (MAX_EVENT_LENGTH * 2 + 2 + 128) static enum event_result -parse_subsystem_tracepoint_event(char *sys_name, char *flags) +parse_multiple_tracepoint_event(char *sys_name, const char *evt_exp, + char *flags) { char evt_path[MAXPATHLEN]; struct dirent *evt_ent; @@ -474,6 +474,9 @@ parse_subsystem_tracepoint_event(char *sys_name, char *flags) || !strcmp(evt_ent->d_name, "filter")) continue; + if (!strglobmatch(evt_ent->d_name, evt_exp)) + continue; + len = snprintf(event_opt, MAX_EVOPT_LEN, "%s:%s%s%s", sys_name, evt_ent->d_name, flags ? ":" : "", flags ?: ""); @@ -522,13 +525,13 @@ static enum event_result parse_tracepoint_event(const char **strp, if (evt_length >= MAX_EVENT_LENGTH) return EVT_FAILED; - if (!strcmp(evt_name, "*")) { + if (strpbrk(evt_name, "*?")) { *strp = evt_name + evt_length; - return parse_subsystem_tracepoint_event(sys_name, flags); + return parse_multiple_tracepoint_event(sys_name, evt_name, + flags); } else return parse_single_tracepoint_event(sys_name, evt_name, - evt_length, flags, - attr, strp); + evt_length, attr, strp); } static enum event_result @@ -685,19 +688,29 @@ static enum event_result parse_event_modifier(const char **strp, struct perf_event_attr *attr) { const char *str = *strp; - int eu = 1, ek = 1, eh = 1; + int exclude = 0; + int eu = 0, ek = 0, eh = 0, precise = 0; if (*str++ != ':') return 0; while (*str) { - if (*str == 'u') + if (*str == 'u') { + if (!exclude) + exclude = eu = ek = eh = 1; eu = 0; - else if (*str == 'k') + } else if (*str == 'k') { + if (!exclude) + exclude = eu = ek = eh = 1; ek = 0; - else if (*str == 'h') + } else if (*str == 'h') { + if (!exclude) + exclude = eu = ek = eh = 1; eh = 0; - else + } else if (*str == 'p') { + precise++; + } else break; + ++str; } if (str >= *strp + 2) { @@ -705,6 +718,7 @@ parse_event_modifier(const char **strp, struct perf_event_attr *attr) attr->exclude_user = eu; attr->exclude_kernel = ek; attr->exclude_hv = eh; + attr->precise_ip = precise; return 1; } return 0; @@ -753,11 +767,11 @@ modifier: return ret; } -static void store_event_type(const char *orgname) +static int store_event_type(const char *orgname) { char filename[PATH_MAX], *c; FILE *file; - int id; + int id, n; sprintf(filename, "%s/", debugfs_path); strncat(filename, orgname, strlen(orgname)); @@ -769,11 +783,14 @@ static void store_event_type(const char *orgname) file = fopen(filename, "r"); if (!file) - return; - if (fscanf(file, "%i", &id) < 1) - die("cannot store event ID"); + return 0; + n = fscanf(file, "%i", &id); fclose(file); - perf_header__push_event(id, orgname); + if (n < 1) { + pr_err("cannot store event ID\n"); + return -EINVAL; + } + return perf_header__push_event(id, orgname); } int parse_events(const struct option *opt __used, const char *str, int unset __used) @@ -782,7 +799,8 @@ int parse_events(const struct option *opt __used, const char *str, int unset __u enum event_result ret; if (strchr(str, ':')) - store_event_type(str); + if (store_event_type(str) < 0) + return -1; for (;;) { if (nr_counters == MAX_COUNTERS) @@ -835,11 +853,12 @@ int parse_filter(const struct option *opt __used, const char *str, } static const char * const event_type_descriptors[] = { - "", "Hardware event", "Software event", "Tracepoint event", "Hardware cache event", + "Raw hardware event descriptor", + "Hardware breakpoint", }; /* @@ -872,7 +891,7 @@ static void print_tracepoint_events(void) snprintf(evt_path, MAXPATHLEN, "%s:%s", sys_dirent.d_name, evt_dirent.d_name); printf(" %-42s [%s]\n", evt_path, - event_type_descriptors[PERF_TYPE_TRACEPOINT+1]); + event_type_descriptors[PERF_TYPE_TRACEPOINT]); } closedir(evt_dir); } @@ -892,9 +911,7 @@ void print_events(void) printf("List of pre-defined events (to be used in -e):\n"); for (i = 0; i < ARRAY_SIZE(event_symbols); i++, syms++) { - type = syms->type + 1; - if (type >= ARRAY_SIZE(event_type_descriptors)) - type = 0; + type = syms->type; if (type != prev_type) printf("\n"); @@ -919,17 +936,20 @@ void print_events(void) for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) { printf(" %-42s [%s]\n", event_cache_name(type, op, i), - event_type_descriptors[4]); + event_type_descriptors[PERF_TYPE_HW_CACHE]); } } } printf("\n"); - printf(" %-42s [raw hardware event descriptor]\n", - "rNNN"); + printf(" %-42s [%s]\n", + "rNNN (see 'perf list --help' on how to encode it)", + event_type_descriptors[PERF_TYPE_RAW]); printf("\n"); - printf(" %-42s [hardware breakpoint]\n", "mem:<addr>[:access]"); + printf(" %-42s [%s]\n", + "mem:<addr>[:access]", + event_type_descriptors[PERF_TYPE_BREAKPOINT]); printf("\n"); print_tracepoint_events(); diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h index b8c1f64bc935..fc4ab3fe877a 100644 --- a/tools/perf/util/parse-events.h +++ b/tools/perf/util/parse-events.h @@ -13,6 +13,7 @@ struct tracepoint_path { }; extern struct tracepoint_path *tracepoint_id_to_path(u64 config); +extern bool have_tracepoints(struct perf_event_attr *pattrs, int nb_events); extern int nr_counters; diff --git a/tools/perf/util/parse-options.c b/tools/perf/util/parse-options.c index efebd5b476b3..99d02aa57dbf 100644 --- a/tools/perf/util/parse-options.c +++ b/tools/perf/util/parse-options.c @@ -49,8 +49,9 @@ static int get_value(struct parse_opt_ctx_t *p, break; /* FALLTHROUGH */ case OPTION_BOOLEAN: + case OPTION_INCR: case OPTION_BIT: - case OPTION_SET_INT: + case OPTION_SET_UINT: case OPTION_SET_PTR: return opterror(opt, "takes no value", flags); case OPTION_END: @@ -58,7 +59,9 @@ static int get_value(struct parse_opt_ctx_t *p, case OPTION_GROUP: case OPTION_STRING: case OPTION_INTEGER: + case OPTION_UINTEGER: case OPTION_LONG: + case OPTION_U64: default: break; } @@ -73,11 +76,15 @@ static int get_value(struct parse_opt_ctx_t *p, return 0; case OPTION_BOOLEAN: + *(bool *)opt->value = unset ? false : true; + return 0; + + case OPTION_INCR: *(int *)opt->value = unset ? 0 : *(int *)opt->value + 1; return 0; - case OPTION_SET_INT: - *(int *)opt->value = unset ? 0 : opt->defval; + case OPTION_SET_UINT: + *(unsigned int *)opt->value = unset ? 0 : opt->defval; return 0; case OPTION_SET_PTR: @@ -120,6 +127,22 @@ static int get_value(struct parse_opt_ctx_t *p, return opterror(opt, "expects a numerical value", flags); return 0; + case OPTION_UINTEGER: + if (unset) { + *(unsigned int *)opt->value = 0; + return 0; + } + if (opt->flags & PARSE_OPT_OPTARG && !p->opt) { + *(unsigned int *)opt->value = opt->defval; + return 0; + } + if (get_arg(p, opt, flags, &arg)) + return -1; + *(unsigned int *)opt->value = strtol(arg, (char **)&s, 10); + if (*s) + return opterror(opt, "expects a numerical value", flags); + return 0; + case OPTION_LONG: if (unset) { *(long *)opt->value = 0; @@ -136,6 +159,22 @@ static int get_value(struct parse_opt_ctx_t *p, return opterror(opt, "expects a numerical value", flags); return 0; + case OPTION_U64: + if (unset) { + *(u64 *)opt->value = 0; + return 0; + } + if (opt->flags & PARSE_OPT_OPTARG && !p->opt) { + *(u64 *)opt->value = opt->defval; + return 0; + } + if (get_arg(p, opt, flags, &arg)) + return -1; + *(u64 *)opt->value = strtoull(arg, (char **)&s, 10); + if (*s) + return opterror(opt, "expects a numerical value", flags); + return 0; + case OPTION_END: case OPTION_ARGUMENT: case OPTION_GROUP: @@ -441,7 +480,10 @@ int usage_with_options_internal(const char * const *usagestr, switch (opts->type) { case OPTION_ARGUMENT: break; + case OPTION_LONG: + case OPTION_U64: case OPTION_INTEGER: + case OPTION_UINTEGER: if (opts->flags & PARSE_OPT_OPTARG) if (opts->long_name) pos += fprintf(stderr, "[=<n>]"); @@ -473,14 +515,14 @@ int usage_with_options_internal(const char * const *usagestr, pos += fprintf(stderr, " ..."); } break; - default: /* OPTION_{BIT,BOOLEAN,SET_INT,SET_PTR} */ + default: /* OPTION_{BIT,BOOLEAN,SET_UINT,SET_PTR} */ case OPTION_END: case OPTION_GROUP: case OPTION_BIT: case OPTION_BOOLEAN: - case OPTION_SET_INT: + case OPTION_INCR: + case OPTION_SET_UINT: case OPTION_SET_PTR: - case OPTION_LONG: break; } @@ -500,6 +542,7 @@ int usage_with_options_internal(const char * const *usagestr, void usage_with_options(const char * const *usagestr, const struct option *opts) { + exit_browser(false); usage_with_options_internal(usagestr, opts, 0); exit(129); } diff --git a/tools/perf/util/parse-options.h b/tools/perf/util/parse-options.h index 948805af43c2..c7d72dce54b2 100644 --- a/tools/perf/util/parse-options.h +++ b/tools/perf/util/parse-options.h @@ -1,6 +1,9 @@ #ifndef __PERF_PARSE_OPTIONS_H #define __PERF_PARSE_OPTIONS_H +#include <linux/kernel.h> +#include <stdbool.h> + enum parse_opt_type { /* special types */ OPTION_END, @@ -8,14 +11,17 @@ enum parse_opt_type { OPTION_GROUP, /* options with no arguments */ OPTION_BIT, - OPTION_BOOLEAN, /* _INCR would have been a better name */ - OPTION_SET_INT, + OPTION_BOOLEAN, + OPTION_INCR, + OPTION_SET_UINT, OPTION_SET_PTR, /* options with arguments (usually) */ OPTION_STRING, OPTION_INTEGER, OPTION_LONG, OPTION_CALLBACK, + OPTION_U64, + OPTION_UINTEGER, }; enum parse_opt_flags { @@ -73,7 +79,7 @@ typedef int parse_opt_cb(const struct option *, const char *arg, int unset); * * `defval`:: * default value to fill (*->value) with for PARSE_OPT_OPTARG. - * OPTION_{BIT,SET_INT,SET_PTR} store the {mask,integer,pointer} to put in + * OPTION_{BIT,SET_UINT,SET_PTR} store the {mask,integer,pointer} to put in * the value when met. * CALLBACKS can use it like they want. */ @@ -90,16 +96,21 @@ struct option { intptr_t defval; }; +#define check_vtype(v, type) ( BUILD_BUG_ON_ZERO(!__builtin_types_compatible_p(typeof(v), type)) + v ) + #define OPT_END() { .type = OPTION_END } #define OPT_ARGUMENT(l, h) { .type = OPTION_ARGUMENT, .long_name = (l), .help = (h) } #define OPT_GROUP(h) { .type = OPTION_GROUP, .help = (h) } -#define OPT_BIT(s, l, v, h, b) { .type = OPTION_BIT, .short_name = (s), .long_name = (l), .value = (v), .help = (h), .defval = (b) } -#define OPT_BOOLEAN(s, l, v, h) { .type = OPTION_BOOLEAN, .short_name = (s), .long_name = (l), .value = (v), .help = (h) } -#define OPT_SET_INT(s, l, v, h, i) { .type = OPTION_SET_INT, .short_name = (s), .long_name = (l), .value = (v), .help = (h), .defval = (i) } +#define OPT_BIT(s, l, v, h, b) { .type = OPTION_BIT, .short_name = (s), .long_name = (l), .value = check_vtype(v, int *), .help = (h), .defval = (b) } +#define OPT_BOOLEAN(s, l, v, h) { .type = OPTION_BOOLEAN, .short_name = (s), .long_name = (l), .value = check_vtype(v, bool *), .help = (h) } +#define OPT_INCR(s, l, v, h) { .type = OPTION_INCR, .short_name = (s), .long_name = (l), .value = check_vtype(v, int *), .help = (h) } +#define OPT_SET_UINT(s, l, v, h, i) { .type = OPTION_SET_UINT, .short_name = (s), .long_name = (l), .value = check_vtype(v, unsigned int *), .help = (h), .defval = (i) } #define OPT_SET_PTR(s, l, v, h, p) { .type = OPTION_SET_PTR, .short_name = (s), .long_name = (l), .value = (v), .help = (h), .defval = (p) } -#define OPT_INTEGER(s, l, v, h) { .type = OPTION_INTEGER, .short_name = (s), .long_name = (l), .value = (v), .help = (h) } -#define OPT_LONG(s, l, v, h) { .type = OPTION_LONG, .short_name = (s), .long_name = (l), .value = (v), .help = (h) } -#define OPT_STRING(s, l, v, a, h) { .type = OPTION_STRING, .short_name = (s), .long_name = (l), .value = (v), (a), .help = (h) } +#define OPT_INTEGER(s, l, v, h) { .type = OPTION_INTEGER, .short_name = (s), .long_name = (l), .value = check_vtype(v, int *), .help = (h) } +#define OPT_UINTEGER(s, l, v, h) { .type = OPTION_UINTEGER, .short_name = (s), .long_name = (l), .value = check_vtype(v, unsigned int *), .help = (h) } +#define OPT_LONG(s, l, v, h) { .type = OPTION_LONG, .short_name = (s), .long_name = (l), .value = check_vtype(v, long *), .help = (h) } +#define OPT_U64(s, l, v, h) { .type = OPTION_U64, .short_name = (s), .long_name = (l), .value = check_vtype(v, u64 *), .help = (h) } +#define OPT_STRING(s, l, v, a, h) { .type = OPTION_STRING, .short_name = (s), .long_name = (l), .value = check_vtype(v, const char **), (a), .help = (h) } #define OPT_DATE(s, l, v, h) \ { .type = OPTION_CALLBACK, .short_name = (s), .long_name = (l), .value = (v), .argh = "time", .help = (h), .callback = parse_opt_approxidate_cb } #define OPT_CALLBACK(s, l, v, a, h, f) \ diff --git a/tools/perf/util/path.c b/tools/perf/util/path.c index fd1f2faaade4..58a470d036dd 100644 --- a/tools/perf/util/path.c +++ b/tools/perf/util/path.c @@ -54,21 +54,6 @@ static char *cleanup_path(char *path) return path; } -char *mksnpath(char *buf, size_t n, const char *fmt, ...) -{ - va_list args; - unsigned len; - - va_start(args, fmt); - len = vsnprintf(buf, n, fmt, args); - va_end(args); - if (len >= n) { - strlcpy(buf, bad_path, n); - return buf; - } - return cleanup_path(buf); -} - static char *perf_vsnpath(char *buf, size_t n, const char *fmt, va_list args) { const char *perf_dir = get_perf_dir(); @@ -89,15 +74,6 @@ bad: return buf; } -char *perf_snpath(char *buf, size_t n, const char *fmt, ...) -{ - va_list args; - va_start(args, fmt); - (void)perf_vsnpath(buf, n, fmt, args); - va_end(args); - return buf; -} - char *perf_pathdup(const char *fmt, ...) { char path[PATH_MAX]; @@ -143,184 +119,6 @@ char *perf_path(const char *fmt, ...) return cleanup_path(pathname); } - -/* perf_mkstemp() - create tmp file honoring TMPDIR variable */ -int perf_mkstemp(char *path, size_t len, const char *template) -{ - const char *tmp; - size_t n; - - tmp = getenv("TMPDIR"); - if (!tmp) - tmp = "/tmp"; - n = snprintf(path, len, "%s/%s", tmp, template); - if (len <= n) { - errno = ENAMETOOLONG; - return -1; - } - return mkstemp(path); -} - - -const char *make_relative_path(const char *abs_path, const char *base) -{ - static char buf[PATH_MAX + 1]; - int baselen; - - if (!base) - return abs_path; - - baselen = strlen(base); - if (prefixcmp(abs_path, base)) - return abs_path; - if (abs_path[baselen] == '/') - baselen++; - else if (base[baselen - 1] != '/') - return abs_path; - - strcpy(buf, abs_path + baselen); - - return buf; -} - -/* - * It is okay if dst == src, but they should not overlap otherwise. - * - * Performs the following normalizations on src, storing the result in dst: - * - Ensures that components are separated by '/' (Windows only) - * - Squashes sequences of '/'. - * - Removes "." components. - * - Removes ".." components, and the components the precede them. - * Returns failure (non-zero) if a ".." component appears as first path - * component anytime during the normalization. Otherwise, returns success (0). - * - * Note that this function is purely textual. It does not follow symlinks, - * verify the existence of the path, or make any system calls. - */ -int normalize_path_copy(char *dst, const char *src) -{ - char *dst0; - - if (has_dos_drive_prefix(src)) { - *dst++ = *src++; - *dst++ = *src++; - } - dst0 = dst; - - if (is_dir_sep(*src)) { - *dst++ = '/'; - while (is_dir_sep(*src)) - src++; - } - - for (;;) { - char c = *src; - - /* - * A path component that begins with . could be - * special: - * (1) "." and ends -- ignore and terminate. - * (2) "./" -- ignore them, eat slash and continue. - * (3) ".." and ends -- strip one and terminate. - * (4) "../" -- strip one, eat slash and continue. - */ - if (c == '.') { - if (!src[1]) { - /* (1) */ - src++; - } else if (is_dir_sep(src[1])) { - /* (2) */ - src += 2; - while (is_dir_sep(*src)) - src++; - continue; - } else if (src[1] == '.') { - if (!src[2]) { - /* (3) */ - src += 2; - goto up_one; - } else if (is_dir_sep(src[2])) { - /* (4) */ - src += 3; - while (is_dir_sep(*src)) - src++; - goto up_one; - } - } - } - - /* copy up to the next '/', and eat all '/' */ - while ((c = *src++) != '\0' && !is_dir_sep(c)) - *dst++ = c; - if (is_dir_sep(c)) { - *dst++ = '/'; - while (is_dir_sep(c)) - c = *src++; - src--; - } else if (!c) - break; - continue; - - up_one: - /* - * dst0..dst is prefix portion, and dst[-1] is '/'; - * go up one level. - */ - dst--; /* go to trailing '/' */ - if (dst <= dst0) - return -1; - /* Windows: dst[-1] cannot be backslash anymore */ - while (dst0 < dst && dst[-1] != '/') - dst--; - } - *dst = '\0'; - return 0; -} - -/* - * path = Canonical absolute path - * prefix_list = Colon-separated list of absolute paths - * - * Determines, for each path in prefix_list, whether the "prefix" really - * is an ancestor directory of path. Returns the length of the longest - * ancestor directory, excluding any trailing slashes, or -1 if no prefix - * is an ancestor. (Note that this means 0 is returned if prefix_list is - * "/".) "/foo" is not considered an ancestor of "/foobar". Directories - * are not considered to be their own ancestors. path must be in a - * canonical form: empty components, or "." or ".." components are not - * allowed. prefix_list may be null, which is like "". - */ -int longest_ancestor_length(const char *path, const char *prefix_list) -{ - char buf[PATH_MAX+1]; - const char *ceil, *colon; - int len, max_len = -1; - - if (prefix_list == NULL || !strcmp(path, "/")) - return -1; - - for (colon = ceil = prefix_list; *colon; ceil = colon+1) { - for (colon = ceil; *colon && *colon != PATH_SEP; colon++); - len = colon - ceil; - if (len == 0 || len > PATH_MAX || !is_absolute_path(ceil)) - continue; - strlcpy(buf, ceil, len+1); - if (normalize_path_copy(buf, buf) < 0) - continue; - len = strlen(buf); - if (len > 0 && buf[len-1] == '/') - buf[--len] = '\0'; - - if (!strncmp(path, buf, len) && - path[len] == '/' && - len > max_len) { - max_len = len; - } - } - - return max_len; -} - /* strip arbitrary amount of directory separators at end of path */ static inline int chomp_trailing_dir_sep(const char *path, int len) { @@ -354,5 +152,5 @@ char *strip_path_suffix(const char *path, const char *suffix) if (path_len && !is_dir_sep(path[path_len - 1])) return NULL; - return xstrndup(path, chomp_trailing_dir_sep(path, path_len)); + return strndup(path, chomp_trailing_dir_sep(path, path_len)); } diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index 29465d440043..914c67095d96 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -33,18 +33,27 @@ #include <limits.h> #undef _GNU_SOURCE +#include "util.h" #include "event.h" #include "string.h" #include "strlist.h" #include "debug.h" -#include "parse-events.h" /* For debugfs_path */ +#include "cache.h" +#include "color.h" +#include "symbol.h" +#include "thread.h" +#include "debugfs.h" +#include "trace-event.h" /* For __unused */ #include "probe-event.h" +#include "probe-finder.h" #define MAX_CMDLEN 256 #define MAX_PROBE_ARGS 128 #define PERFPROBE_GROUP "probe" -#define semantic_error(msg ...) die("Semantic error :" msg) +bool probe_event_dry_run; /* Dry run flag */ + +#define semantic_error(msg ...) pr_err("Semantic error :" msg) /* If there is no space to write, returns -E2BIG. */ static int e_snprintf(char *str, size_t size, const char *format, ...) @@ -62,6 +71,326 @@ static int e_snprintf(char *str, size_t size, const char *format, ...) return ret; } +static char *synthesize_perf_probe_point(struct perf_probe_point *pp); +static struct machine machine; + +/* Initialize symbol maps and path of vmlinux */ +static int init_vmlinux(void) +{ + struct dso *kernel; + int ret; + + symbol_conf.sort_by_name = true; + if (symbol_conf.vmlinux_name == NULL) + symbol_conf.try_vmlinux_path = true; + else + pr_debug("Use vmlinux: %s\n", symbol_conf.vmlinux_name); + ret = symbol__init(); + if (ret < 0) { + pr_debug("Failed to init symbol map.\n"); + goto out; + } + + ret = machine__init(&machine, "/", 0); + if (ret < 0) + goto out; + + kernel = dso__new_kernel(symbol_conf.vmlinux_name); + if (kernel == NULL) + die("Failed to create kernel dso."); + + ret = __machine__create_kernel_maps(&machine, kernel); + if (ret < 0) + pr_debug("Failed to create kernel maps.\n"); + +out: + if (ret < 0) + pr_warning("Failed to init vmlinux path.\n"); + return ret; +} + +#ifdef DWARF_SUPPORT +static int open_vmlinux(void) +{ + if (map__load(machine.vmlinux_maps[MAP__FUNCTION], NULL) < 0) { + pr_debug("Failed to load kernel map.\n"); + return -EINVAL; + } + pr_debug("Try to open %s\n", machine.vmlinux_maps[MAP__FUNCTION]->dso->long_name); + return open(machine.vmlinux_maps[MAP__FUNCTION]->dso->long_name, O_RDONLY); +} + +/* Convert trace point to probe point with debuginfo */ +static int convert_to_perf_probe_point(struct kprobe_trace_point *tp, + struct perf_probe_point *pp) +{ + struct symbol *sym; + int fd, ret = -ENOENT; + + sym = map__find_symbol_by_name(machine.vmlinux_maps[MAP__FUNCTION], + tp->symbol, NULL); + if (sym) { + fd = open_vmlinux(); + if (fd >= 0) { + ret = find_perf_probe_point(fd, + sym->start + tp->offset, pp); + close(fd); + } + } + if (ret <= 0) { + pr_debug("Failed to find corresponding probes from " + "debuginfo. Use kprobe event information.\n"); + pp->function = strdup(tp->symbol); + if (pp->function == NULL) + return -ENOMEM; + pp->offset = tp->offset; + } + pp->retprobe = tp->retprobe; + + return 0; +} + +/* Try to find perf_probe_event with debuginfo */ +static int try_to_find_kprobe_trace_events(struct perf_probe_event *pev, + struct kprobe_trace_event **tevs, + int max_tevs) +{ + bool need_dwarf = perf_probe_event_need_dwarf(pev); + int fd, ntevs; + + fd = open_vmlinux(); + if (fd < 0) { + if (need_dwarf) { + pr_warning("Failed to open debuginfo file.\n"); + return fd; + } + pr_debug("Could not open vmlinux. Try to use symbols.\n"); + return 0; + } + + /* Searching trace events corresponding to probe event */ + ntevs = find_kprobe_trace_events(fd, pev, tevs, max_tevs); + close(fd); + + if (ntevs > 0) { /* Succeeded to find trace events */ + pr_debug("find %d kprobe_trace_events.\n", ntevs); + return ntevs; + } + + if (ntevs == 0) { /* No error but failed to find probe point. */ + pr_warning("Probe point '%s' not found.\n", + synthesize_perf_probe_point(&pev->point)); + return -ENOENT; + } + /* Error path : ntevs < 0 */ + pr_debug("An error occurred in debuginfo analysis (%d).\n", ntevs); + if (ntevs == -EBADF) { + pr_warning("Warning: No dwarf info found in the vmlinux - " + "please rebuild kernel with CONFIG_DEBUG_INFO=y.\n"); + if (!need_dwarf) { + pr_debug("Trying to use symbols.\nn"); + return 0; + } + } + return ntevs; +} + +#define LINEBUF_SIZE 256 +#define NR_ADDITIONAL_LINES 2 + +static int show_one_line(FILE *fp, int l, bool skip, bool show_num) +{ + char buf[LINEBUF_SIZE]; + const char *color = PERF_COLOR_BLUE; + + if (fgets(buf, LINEBUF_SIZE, fp) == NULL) + goto error; + if (!skip) { + if (show_num) + fprintf(stdout, "%7d %s", l, buf); + else + color_fprintf(stdout, color, " %s", buf); + } + + while (strlen(buf) == LINEBUF_SIZE - 1 && + buf[LINEBUF_SIZE - 2] != '\n') { + if (fgets(buf, LINEBUF_SIZE, fp) == NULL) + goto error; + if (!skip) { + if (show_num) + fprintf(stdout, "%s", buf); + else + color_fprintf(stdout, color, "%s", buf); + } + } + + return 0; +error: + if (feof(fp)) + pr_warning("Source file is shorter than expected.\n"); + else + pr_warning("File read error: %s\n", strerror(errno)); + + return -1; +} + +/* + * Show line-range always requires debuginfo to find source file and + * line number. + */ +int show_line_range(struct line_range *lr) +{ + int l = 1; + struct line_node *ln; + FILE *fp; + int fd, ret; + + /* Search a line range */ + ret = init_vmlinux(); + if (ret < 0) + return ret; + + fd = open_vmlinux(); + if (fd < 0) { + pr_warning("Failed to open debuginfo file.\n"); + return fd; + } + + ret = find_line_range(fd, lr); + close(fd); + if (ret == 0) { + pr_warning("Specified source line is not found.\n"); + return -ENOENT; + } else if (ret < 0) { + pr_warning("Debuginfo analysis failed. (%d)\n", ret); + return ret; + } + + setup_pager(); + + if (lr->function) + fprintf(stdout, "<%s:%d>\n", lr->function, + lr->start - lr->offset); + else + fprintf(stdout, "<%s:%d>\n", lr->file, lr->start); + + fp = fopen(lr->path, "r"); + if (fp == NULL) { + pr_warning("Failed to open %s: %s\n", lr->path, + strerror(errno)); + return -errno; + } + /* Skip to starting line number */ + while (l < lr->start && ret >= 0) + ret = show_one_line(fp, l++, true, false); + if (ret < 0) + goto end; + + list_for_each_entry(ln, &lr->line_list, list) { + while (ln->line > l && ret >= 0) + ret = show_one_line(fp, (l++) - lr->offset, + false, false); + if (ret >= 0) + ret = show_one_line(fp, (l++) - lr->offset, + false, true); + if (ret < 0) + goto end; + } + + if (lr->end == INT_MAX) + lr->end = l + NR_ADDITIONAL_LINES; + while (l <= lr->end && !feof(fp) && ret >= 0) + ret = show_one_line(fp, (l++) - lr->offset, false, false); +end: + fclose(fp); + return ret; +} + +#else /* !DWARF_SUPPORT */ + +static int convert_to_perf_probe_point(struct kprobe_trace_point *tp, + struct perf_probe_point *pp) +{ + pp->function = strdup(tp->symbol); + if (pp->function == NULL) + return -ENOMEM; + pp->offset = tp->offset; + pp->retprobe = tp->retprobe; + + return 0; +} + +static int try_to_find_kprobe_trace_events(struct perf_probe_event *pev, + struct kprobe_trace_event **tevs __unused, + int max_tevs __unused) +{ + if (perf_probe_event_need_dwarf(pev)) { + pr_warning("Debuginfo-analysis is not supported.\n"); + return -ENOSYS; + } + return 0; +} + +int show_line_range(struct line_range *lr __unused) +{ + pr_warning("Debuginfo-analysis is not supported.\n"); + return -ENOSYS; +} + +#endif + +int parse_line_range_desc(const char *arg, struct line_range *lr) +{ + const char *ptr; + char *tmp; + /* + * <Syntax> + * SRC:SLN[+NUM|-ELN] + * FUNC[:SLN[+NUM|-ELN]] + */ + ptr = strchr(arg, ':'); + if (ptr) { + lr->start = (int)strtoul(ptr + 1, &tmp, 0); + if (*tmp == '+') { + lr->end = lr->start + (int)strtoul(tmp + 1, &tmp, 0); + lr->end--; /* + * Adjust the number of lines here. + * If the number of lines == 1, the + * the end of line should be equal to + * the start of line. + */ + } else if (*tmp == '-') + lr->end = (int)strtoul(tmp + 1, &tmp, 0); + else + lr->end = INT_MAX; + pr_debug("Line range is %d to %d\n", lr->start, lr->end); + if (lr->start > lr->end) { + semantic_error("Start line must be smaller" + " than end line.\n"); + return -EINVAL; + } + if (*tmp != '\0') { + semantic_error("Tailing with invalid character '%d'.\n", + *tmp); + return -EINVAL; + } + tmp = strndup(arg, (ptr - arg)); + } else { + tmp = strdup(arg); + lr->end = INT_MAX; + } + + if (tmp == NULL) + return -ENOMEM; + + if (strchr(tmp, '.')) + lr->file = tmp; + else + lr->function = tmp; + + return 0; +} + /* Check the name is good for event/group */ static bool check_event_name(const char *name) { @@ -75,50 +404,66 @@ static bool check_event_name(const char *name) } /* Parse probepoint definition. */ -static void parse_perf_probe_probepoint(char *arg, struct probe_point *pp) +static int parse_perf_probe_point(char *arg, struct perf_probe_event *pev) { + struct perf_probe_point *pp = &pev->point; char *ptr, *tmp; char c, nc = 0; /* * <Syntax> - * perf probe [EVENT=]SRC:LN - * perf probe [EVENT=]FUNC[+OFFS|%return][@SRC] + * perf probe [EVENT=]SRC[:LN|;PTN] + * perf probe [EVENT=]FUNC[@SRC][+OFFS|%return|:LN|;PAT] * * TODO:Group name support */ - ptr = strchr(arg, '='); - if (ptr) { /* Event name */ + ptr = strpbrk(arg, ";=@+%"); + if (ptr && *ptr == '=') { /* Event name */ *ptr = '\0'; tmp = ptr + 1; - ptr = strchr(arg, ':'); - if (ptr) /* Group name is not supported yet. */ - semantic_error("Group name is not supported yet."); - if (!check_event_name(arg)) + if (strchr(arg, ':')) { + semantic_error("Group name is not supported yet.\n"); + return -ENOTSUP; + } + if (!check_event_name(arg)) { semantic_error("%s is bad for event name -it must " - "follow C symbol-naming rule.", arg); - pp->event = strdup(arg); + "follow C symbol-naming rule.\n", arg); + return -EINVAL; + } + pev->event = strdup(arg); + if (pev->event == NULL) + return -ENOMEM; + pev->group = NULL; arg = tmp; } - ptr = strpbrk(arg, ":+@%"); + ptr = strpbrk(arg, ";:+@%"); if (ptr) { nc = *ptr; *ptr++ = '\0'; } + tmp = strdup(arg); + if (tmp == NULL) + return -ENOMEM; + /* Check arg is function or file and copy it */ - if (strchr(arg, '.')) /* File */ - pp->file = strdup(arg); + if (strchr(tmp, '.')) /* File */ + pp->file = tmp; else /* Function */ - pp->function = strdup(arg); - DIE_IF(pp->file == NULL && pp->function == NULL); + pp->function = tmp; /* Parse other options */ while (ptr) { arg = ptr; c = nc; - ptr = strpbrk(arg, ":+@%"); + if (c == ';') { /* Lazy pattern must be the last part */ + pp->lazy_line = strdup(arg); + if (pp->lazy_line == NULL) + return -ENOMEM; + break; + } + ptr = strpbrk(arg, ";:+@%"); if (ptr) { nc = *ptr; *ptr++ = '\0'; @@ -126,258 +471,658 @@ static void parse_perf_probe_probepoint(char *arg, struct probe_point *pp) switch (c) { case ':': /* Line number */ pp->line = strtoul(arg, &tmp, 0); - if (*tmp != '\0') - semantic_error("There is non-digit charactor" - " in line number."); + if (*tmp != '\0') { + semantic_error("There is non-digit char" + " in line number.\n"); + return -EINVAL; + } break; case '+': /* Byte offset from a symbol */ pp->offset = strtoul(arg, &tmp, 0); - if (*tmp != '\0') - semantic_error("There is non-digit charactor" - " in offset."); + if (*tmp != '\0') { + semantic_error("There is non-digit character" + " in offset.\n"); + return -EINVAL; + } break; case '@': /* File name */ - if (pp->file) - semantic_error("SRC@SRC is not allowed."); + if (pp->file) { + semantic_error("SRC@SRC is not allowed.\n"); + return -EINVAL; + } pp->file = strdup(arg); - DIE_IF(pp->file == NULL); - if (ptr) - semantic_error("@SRC must be the last " - "option."); + if (pp->file == NULL) + return -ENOMEM; break; case '%': /* Probe places */ if (strcmp(arg, "return") == 0) { pp->retprobe = 1; - } else /* Others not supported yet */ - semantic_error("%%%s is not supported.", arg); + } else { /* Others not supported yet */ + semantic_error("%%%s is not supported.\n", arg); + return -ENOTSUP; + } break; - default: - DIE_IF("Program has a bug."); + default: /* Buggy case */ + pr_err("This program has a bug at %s:%d.\n", + __FILE__, __LINE__); + return -ENOTSUP; break; } } /* Exclusion check */ - if (pp->line && pp->offset) + if (pp->lazy_line && pp->line) { + semantic_error("Lazy pattern can't be used with line number."); + return -EINVAL; + } + + if (pp->lazy_line && pp->offset) { + semantic_error("Lazy pattern can't be used with offset."); + return -EINVAL; + } + + if (pp->line && pp->offset) { semantic_error("Offset can't be used with line number."); + return -EINVAL; + } - if (!pp->line && pp->file && !pp->function) - semantic_error("File always requires line number."); + if (!pp->line && !pp->lazy_line && pp->file && !pp->function) { + semantic_error("File always requires line number or " + "lazy pattern."); + return -EINVAL; + } - if (pp->offset && !pp->function) + if (pp->offset && !pp->function) { semantic_error("Offset requires an entry function."); + return -EINVAL; + } - if (pp->retprobe && !pp->function) + if (pp->retprobe && !pp->function) { semantic_error("Return probe requires an entry function."); + return -EINVAL; + } - if ((pp->offset || pp->line) && pp->retprobe) - semantic_error("Offset/Line can't be used with return probe."); + if ((pp->offset || pp->line || pp->lazy_line) && pp->retprobe) { + semantic_error("Offset/Line/Lazy pattern can't be used with " + "return probe."); + return -EINVAL; + } - pr_debug("symbol:%s file:%s line:%d offset:%d, return:%d\n", - pp->function, pp->file, pp->line, pp->offset, pp->retprobe); + pr_debug("symbol:%s file:%s line:%d offset:%lu return:%d lazy:%s\n", + pp->function, pp->file, pp->line, pp->offset, pp->retprobe, + pp->lazy_line); + return 0; } -/* Parse perf-probe event definition */ -void parse_perf_probe_event(const char *str, struct probe_point *pp, - bool *need_dwarf) +/* Parse perf-probe event argument */ +static int parse_perf_probe_arg(char *str, struct perf_probe_arg *arg) { - char **argv; - int argc, i; + char *tmp; + struct perf_probe_arg_field **fieldp; + + pr_debug("parsing arg: %s into ", str); + + tmp = strchr(str, '='); + if (tmp) { + arg->name = strndup(str, tmp - str); + if (arg->name == NULL) + return -ENOMEM; + pr_debug("name:%s ", arg->name); + str = tmp + 1; + } + + tmp = strchr(str, ':'); + if (tmp) { /* Type setting */ + *tmp = '\0'; + arg->type = strdup(tmp + 1); + if (arg->type == NULL) + return -ENOMEM; + pr_debug("type:%s ", arg->type); + } + + tmp = strpbrk(str, "-."); + if (!is_c_varname(str) || !tmp) { + /* A variable, register, symbol or special value */ + arg->var = strdup(str); + if (arg->var == NULL) + return -ENOMEM; + pr_debug("%s\n", arg->var); + return 0; + } + + /* Structure fields */ + arg->var = strndup(str, tmp - str); + if (arg->var == NULL) + return -ENOMEM; + pr_debug("%s, ", arg->var); + fieldp = &arg->field; + + do { + *fieldp = zalloc(sizeof(struct perf_probe_arg_field)); + if (*fieldp == NULL) + return -ENOMEM; + if (*tmp == '.') { + str = tmp + 1; + (*fieldp)->ref = false; + } else if (tmp[1] == '>') { + str = tmp + 2; + (*fieldp)->ref = true; + } else { + semantic_error("Argument parse error: %s\n", str); + return -EINVAL; + } - *need_dwarf = false; + tmp = strpbrk(str, "-."); + if (tmp) { + (*fieldp)->name = strndup(str, tmp - str); + if ((*fieldp)->name == NULL) + return -ENOMEM; + pr_debug("%s(%d), ", (*fieldp)->name, (*fieldp)->ref); + fieldp = &(*fieldp)->next; + } + } while (tmp); + (*fieldp)->name = strdup(str); + if ((*fieldp)->name == NULL) + return -ENOMEM; + pr_debug("%s(%d)\n", (*fieldp)->name, (*fieldp)->ref); + + /* If no name is specified, set the last field name */ + if (!arg->name) { + arg->name = strdup((*fieldp)->name); + if (arg->name == NULL) + return -ENOMEM; + } + return 0; +} - argv = argv_split(str, &argc); - if (!argv) - die("argv_split failed."); - if (argc > MAX_PROBE_ARGS + 1) - semantic_error("Too many arguments"); +/* Parse perf-probe event command */ +int parse_perf_probe_command(const char *cmd, struct perf_probe_event *pev) +{ + char **argv; + int argc, i, ret = 0; + argv = argv_split(cmd, &argc); + if (!argv) { + pr_debug("Failed to split arguments.\n"); + return -ENOMEM; + } + if (argc - 1 > MAX_PROBE_ARGS) { + semantic_error("Too many probe arguments (%d).\n", argc - 1); + ret = -ERANGE; + goto out; + } /* Parse probe point */ - parse_perf_probe_probepoint(argv[0], pp); - if (pp->file || pp->line) - *need_dwarf = true; + ret = parse_perf_probe_point(argv[0], pev); + if (ret < 0) + goto out; /* Copy arguments and ensure return probe has no C argument */ - pp->nr_args = argc - 1; - pp->args = zalloc(sizeof(char *) * pp->nr_args); - for (i = 0; i < pp->nr_args; i++) { - pp->args[i] = strdup(argv[i + 1]); - if (!pp->args[i]) - die("Failed to copy argument."); - if (is_c_varname(pp->args[i])) { - if (pp->retprobe) - semantic_error("You can't specify local" - " variable for kretprobe"); - *need_dwarf = true; + pev->nargs = argc - 1; + pev->args = zalloc(sizeof(struct perf_probe_arg) * pev->nargs); + if (pev->args == NULL) { + ret = -ENOMEM; + goto out; + } + for (i = 0; i < pev->nargs && ret >= 0; i++) { + ret = parse_perf_probe_arg(argv[i + 1], &pev->args[i]); + if (ret >= 0 && + is_c_varname(pev->args[i].var) && pev->point.retprobe) { + semantic_error("You can't specify local variable for" + " kretprobe.\n"); + ret = -EINVAL; } } - +out: argv_free(argv); + + return ret; +} + +/* Return true if this perf_probe_event requires debuginfo */ +bool perf_probe_event_need_dwarf(struct perf_probe_event *pev) +{ + int i; + + if (pev->point.file || pev->point.line || pev->point.lazy_line) + return true; + + for (i = 0; i < pev->nargs; i++) + if (is_c_varname(pev->args[i].var)) + return true; + + return false; } /* Parse kprobe_events event into struct probe_point */ -void parse_trace_kprobe_event(const char *str, struct probe_point *pp) +int parse_kprobe_trace_command(const char *cmd, struct kprobe_trace_event *tev) { + struct kprobe_trace_point *tp = &tev->point; char pr; char *p; int ret, i, argc; char **argv; - pr_debug("Parsing kprobe_events: %s\n", str); - argv = argv_split(str, &argc); - if (!argv) - die("argv_split failed."); - if (argc < 2) - semantic_error("Too less arguments."); + pr_debug("Parsing kprobe_events: %s\n", cmd); + argv = argv_split(cmd, &argc); + if (!argv) { + pr_debug("Failed to split arguments.\n"); + return -ENOMEM; + } + if (argc < 2) { + semantic_error("Too few probe arguments.\n"); + ret = -ERANGE; + goto out; + } /* Scan event and group name. */ ret = sscanf(argv[0], "%c:%a[^/ \t]/%a[^ \t]", - &pr, (float *)(void *)&pp->group, - (float *)(void *)&pp->event); - if (ret != 3) - semantic_error("Failed to parse event name: %s", argv[0]); - pr_debug("Group:%s Event:%s probe:%c\n", pp->group, pp->event, pr); + &pr, (float *)(void *)&tev->group, + (float *)(void *)&tev->event); + if (ret != 3) { + semantic_error("Failed to parse event name: %s\n", argv[0]); + ret = -EINVAL; + goto out; + } + pr_debug("Group:%s Event:%s probe:%c\n", tev->group, tev->event, pr); - pp->retprobe = (pr == 'r'); + tp->retprobe = (pr == 'r'); /* Scan function name and offset */ - ret = sscanf(argv[1], "%a[^+]+%d", (float *)(void *)&pp->function, - &pp->offset); + ret = sscanf(argv[1], "%a[^+]+%lu", (float *)(void *)&tp->symbol, + &tp->offset); if (ret == 1) - pp->offset = 0; - - /* kprobe_events doesn't have this information */ - pp->line = 0; - pp->file = NULL; + tp->offset = 0; - pp->nr_args = argc - 2; - pp->args = zalloc(sizeof(char *) * pp->nr_args); - for (i = 0; i < pp->nr_args; i++) { + tev->nargs = argc - 2; + tev->args = zalloc(sizeof(struct kprobe_trace_arg) * tev->nargs); + if (tev->args == NULL) { + ret = -ENOMEM; + goto out; + } + for (i = 0; i < tev->nargs; i++) { p = strchr(argv[i + 2], '='); if (p) /* We don't need which register is assigned. */ - *p = '\0'; - pp->args[i] = strdup(argv[i + 2]); - if (!pp->args[i]) - die("Failed to copy argument."); + *p++ = '\0'; + else + p = argv[i + 2]; + tev->args[i].name = strdup(argv[i + 2]); + /* TODO: parse regs and offset */ + tev->args[i].value = strdup(p); + if (tev->args[i].name == NULL || tev->args[i].value == NULL) { + ret = -ENOMEM; + goto out; + } } - + ret = 0; +out: argv_free(argv); + return ret; } -/* Synthesize only probe point (not argument) */ -int synthesize_perf_probe_point(struct probe_point *pp) +/* Compose only probe arg */ +int synthesize_perf_probe_arg(struct perf_probe_arg *pa, char *buf, size_t len) { - char *buf; - char offs[64] = "", line[64] = ""; + struct perf_probe_arg_field *field = pa->field; int ret; + char *tmp = buf; - pp->probes[0] = buf = zalloc(MAX_CMDLEN); - if (!buf) - die("Failed to allocate memory by zalloc."); + if (pa->name && pa->var) + ret = e_snprintf(tmp, len, "%s=%s", pa->name, pa->var); + else + ret = e_snprintf(tmp, len, "%s", pa->name ? pa->name : pa->var); + if (ret <= 0) + goto error; + tmp += ret; + len -= ret; + + while (field) { + ret = e_snprintf(tmp, len, "%s%s", field->ref ? "->" : ".", + field->name); + if (ret <= 0) + goto error; + tmp += ret; + len -= ret; + field = field->next; + } + + if (pa->type) { + ret = e_snprintf(tmp, len, ":%s", pa->type); + if (ret <= 0) + goto error; + tmp += ret; + len -= ret; + } + + return tmp - buf; +error: + pr_debug("Failed to synthesize perf probe argument: %s", + strerror(-ret)); + return ret; +} + +/* Compose only probe point (not argument) */ +static char *synthesize_perf_probe_point(struct perf_probe_point *pp) +{ + char *buf, *tmp; + char offs[32] = "", line[32] = "", file[32] = ""; + int ret, len; + + buf = zalloc(MAX_CMDLEN); + if (buf == NULL) { + ret = -ENOMEM; + goto error; + } if (pp->offset) { - ret = e_snprintf(offs, 64, "+%d", pp->offset); + ret = e_snprintf(offs, 32, "+%lu", pp->offset); if (ret <= 0) goto error; } if (pp->line) { - ret = e_snprintf(line, 64, ":%d", pp->line); + ret = e_snprintf(line, 32, ":%d", pp->line); + if (ret <= 0) + goto error; + } + if (pp->file) { + len = strlen(pp->file) - 31; + if (len < 0) + len = 0; + tmp = strchr(pp->file + len, '/'); + if (!tmp) + tmp = pp->file + len; + ret = e_snprintf(file, 32, "@%s", tmp + 1); if (ret <= 0) goto error; } if (pp->function) - ret = e_snprintf(buf, MAX_CMDLEN, "%s%s%s%s", pp->function, - offs, pp->retprobe ? "%return" : "", line); + ret = e_snprintf(buf, MAX_CMDLEN, "%s%s%s%s%s", pp->function, + offs, pp->retprobe ? "%return" : "", line, + file); else - ret = e_snprintf(buf, MAX_CMDLEN, "%s%s", pp->file, line); - if (ret <= 0) { + ret = e_snprintf(buf, MAX_CMDLEN, "%s%s", file, line); + if (ret <= 0) + goto error; + + return buf; error: - free(pp->probes[0]); - pp->probes[0] = NULL; - } - return ret; + pr_debug("Failed to synthesize perf probe point: %s", + strerror(-ret)); + if (buf) + free(buf); + return NULL; } -int synthesize_perf_probe_event(struct probe_point *pp) +#if 0 +char *synthesize_perf_probe_command(struct perf_probe_event *pev) { char *buf; int i, len, ret; - len = synthesize_perf_probe_point(pp); - if (len < 0) - return 0; + buf = synthesize_perf_probe_point(&pev->point); + if (!buf) + return NULL; - buf = pp->probes[0]; - for (i = 0; i < pp->nr_args; i++) { + len = strlen(buf); + for (i = 0; i < pev->nargs; i++) { ret = e_snprintf(&buf[len], MAX_CMDLEN - len, " %s", - pp->args[i]); - if (ret <= 0) - goto error; + pev->args[i].name); + if (ret <= 0) { + free(buf); + return NULL; + } len += ret; } - pp->found = 1; - return pp->found; -error: - free(pp->probes[0]); - pp->probes[0] = NULL; + return buf; +} +#endif + +static int __synthesize_kprobe_trace_arg_ref(struct kprobe_trace_arg_ref *ref, + char **buf, size_t *buflen, + int depth) +{ + int ret; + if (ref->next) { + depth = __synthesize_kprobe_trace_arg_ref(ref->next, buf, + buflen, depth + 1); + if (depth < 0) + goto out; + } + + ret = e_snprintf(*buf, *buflen, "%+ld(", ref->offset); + if (ret < 0) + depth = ret; + else { + *buf += ret; + *buflen -= ret; + } +out: + return depth; - return ret; } -int synthesize_trace_kprobe_event(struct probe_point *pp) +static int synthesize_kprobe_trace_arg(struct kprobe_trace_arg *arg, + char *buf, size_t buflen) { + int ret, depth = 0; + char *tmp = buf; + + /* Argument name or separator */ + if (arg->name) + ret = e_snprintf(buf, buflen, " %s=", arg->name); + else + ret = e_snprintf(buf, buflen, " "); + if (ret < 0) + return ret; + buf += ret; + buflen -= ret; + + /* Dereferencing arguments */ + if (arg->ref) { + depth = __synthesize_kprobe_trace_arg_ref(arg->ref, &buf, + &buflen, 1); + if (depth < 0) + return depth; + } + + /* Print argument value */ + ret = e_snprintf(buf, buflen, "%s", arg->value); + if (ret < 0) + return ret; + buf += ret; + buflen -= ret; + + /* Closing */ + while (depth--) { + ret = e_snprintf(buf, buflen, ")"); + if (ret < 0) + return ret; + buf += ret; + buflen -= ret; + } + /* Print argument type */ + if (arg->type) { + ret = e_snprintf(buf, buflen, ":%s", arg->type); + if (ret <= 0) + return ret; + buf += ret; + } + + return buf - tmp; +} + +char *synthesize_kprobe_trace_command(struct kprobe_trace_event *tev) +{ + struct kprobe_trace_point *tp = &tev->point; char *buf; int i, len, ret; - pp->probes[0] = buf = zalloc(MAX_CMDLEN); - if (!buf) - die("Failed to allocate memory by zalloc."); - ret = e_snprintf(buf, MAX_CMDLEN, "%s+%d", pp->function, pp->offset); - if (ret <= 0) + buf = zalloc(MAX_CMDLEN); + if (buf == NULL) + return NULL; + + len = e_snprintf(buf, MAX_CMDLEN, "%c:%s/%s %s+%lu", + tp->retprobe ? 'r' : 'p', + tev->group, tev->event, + tp->symbol, tp->offset); + if (len <= 0) goto error; - len = ret; - for (i = 0; i < pp->nr_args; i++) { - ret = e_snprintf(&buf[len], MAX_CMDLEN - len, " %s", - pp->args[i]); + for (i = 0; i < tev->nargs; i++) { + ret = synthesize_kprobe_trace_arg(&tev->args[i], buf + len, + MAX_CMDLEN - len); if (ret <= 0) goto error; len += ret; } - pp->found = 1; - return pp->found; + return buf; error: - free(pp->probes[0]); - pp->probes[0] = NULL; + free(buf); + return NULL; +} + +int convert_to_perf_probe_event(struct kprobe_trace_event *tev, + struct perf_probe_event *pev) +{ + char buf[64] = ""; + int i, ret; + + /* Convert event/group name */ + pev->event = strdup(tev->event); + pev->group = strdup(tev->group); + if (pev->event == NULL || pev->group == NULL) + return -ENOMEM; + + /* Convert trace_point to probe_point */ + ret = convert_to_perf_probe_point(&tev->point, &pev->point); + if (ret < 0) + return ret; + + /* Convert trace_arg to probe_arg */ + pev->nargs = tev->nargs; + pev->args = zalloc(sizeof(struct perf_probe_arg) * pev->nargs); + if (pev->args == NULL) + return -ENOMEM; + for (i = 0; i < tev->nargs && ret >= 0; i++) { + if (tev->args[i].name) + pev->args[i].name = strdup(tev->args[i].name); + else { + ret = synthesize_kprobe_trace_arg(&tev->args[i], + buf, 64); + pev->args[i].name = strdup(buf); + } + if (pev->args[i].name == NULL && ret >= 0) + ret = -ENOMEM; + } + + if (ret < 0) + clear_perf_probe_event(pev); return ret; } -static int open_kprobe_events(int flags, int mode) +void clear_perf_probe_event(struct perf_probe_event *pev) +{ + struct perf_probe_point *pp = &pev->point; + struct perf_probe_arg_field *field, *next; + int i; + + if (pev->event) + free(pev->event); + if (pev->group) + free(pev->group); + if (pp->file) + free(pp->file); + if (pp->function) + free(pp->function); + if (pp->lazy_line) + free(pp->lazy_line); + for (i = 0; i < pev->nargs; i++) { + if (pev->args[i].name) + free(pev->args[i].name); + if (pev->args[i].var) + free(pev->args[i].var); + if (pev->args[i].type) + free(pev->args[i].type); + field = pev->args[i].field; + while (field) { + next = field->next; + if (field->name) + free(field->name); + free(field); + field = next; + } + } + if (pev->args) + free(pev->args); + memset(pev, 0, sizeof(*pev)); +} + +void clear_kprobe_trace_event(struct kprobe_trace_event *tev) +{ + struct kprobe_trace_arg_ref *ref, *next; + int i; + + if (tev->event) + free(tev->event); + if (tev->group) + free(tev->group); + if (tev->point.symbol) + free(tev->point.symbol); + for (i = 0; i < tev->nargs; i++) { + if (tev->args[i].name) + free(tev->args[i].name); + if (tev->args[i].value) + free(tev->args[i].value); + if (tev->args[i].type) + free(tev->args[i].type); + ref = tev->args[i].ref; + while (ref) { + next = ref->next; + free(ref); + ref = next; + } + } + if (tev->args) + free(tev->args); + memset(tev, 0, sizeof(*tev)); +} + +static int open_kprobe_events(bool readwrite) { char buf[PATH_MAX]; + const char *__debugfs; int ret; - ret = e_snprintf(buf, PATH_MAX, "%s/../kprobe_events", debugfs_path); - if (ret < 0) - die("Failed to make kprobe_events path."); + __debugfs = debugfs_find_mountpoint(); + if (__debugfs == NULL) { + pr_warning("Debugfs is not mounted.\n"); + return -ENOENT; + } + + ret = e_snprintf(buf, PATH_MAX, "%stracing/kprobe_events", __debugfs); + if (ret >= 0) { + pr_debug("Opening %s write=%d\n", buf, readwrite); + if (readwrite && !probe_event_dry_run) + ret = open(buf, O_RDWR, O_APPEND); + else + ret = open(buf, O_RDONLY, 0); + } - ret = open(buf, flags, mode); if (ret < 0) { if (errno == ENOENT) - die("kprobe_events file does not exist -" - " please rebuild with CONFIG_KPROBE_TRACER."); + pr_warning("kprobe_events file does not exist - please" + " rebuild kernel with CONFIG_KPROBE_EVENT.\n"); else - die("Could not open kprobe_events file: %s", - strerror(errno)); + pr_warning("Failed to open kprobe_events file: %s\n", + strerror(errno)); } return ret; } /* Get raw string list of current kprobe_events */ -static struct strlist *get_trace_kprobe_event_rawlist(int fd) +static struct strlist *get_kprobe_trace_command_rawlist(int fd) { int ret, idx; FILE *fp; @@ -397,266 +1142,486 @@ static struct strlist *get_trace_kprobe_event_rawlist(int fd) if (p[idx] == '\n') p[idx] = '\0'; ret = strlist__add(sl, buf); - if (ret < 0) - die("strlist__add failed: %s", strerror(-ret)); + if (ret < 0) { + pr_debug("strlist__add failed: %s\n", strerror(-ret)); + strlist__delete(sl); + return NULL; + } } fclose(fp); return sl; } -/* Free and zero clear probe_point */ -static void clear_probe_point(struct probe_point *pp) -{ - int i; - - if (pp->event) - free(pp->event); - if (pp->group) - free(pp->group); - if (pp->function) - free(pp->function); - if (pp->file) - free(pp->file); - for (i = 0; i < pp->nr_args; i++) - free(pp->args[i]); - if (pp->args) - free(pp->args); - for (i = 0; i < pp->found; i++) - free(pp->probes[i]); - memset(pp, 0, sizeof(*pp)); -} - /* Show an event */ -static void show_perf_probe_event(const char *event, const char *place, - struct probe_point *pp) +static int show_perf_probe_event(struct perf_probe_event *pev) { int i, ret; char buf[128]; + char *place; + + /* Synthesize only event probe point */ + place = synthesize_perf_probe_point(&pev->point); + if (!place) + return -EINVAL; - ret = e_snprintf(buf, 128, "%s:%s", pp->group, event); + ret = e_snprintf(buf, 128, "%s:%s", pev->group, pev->event); if (ret < 0) - die("Failed to copy event: %s", strerror(-ret)); - printf(" %-40s (on %s", buf, place); + return ret; + + printf(" %-20s (on %s", buf, place); - if (pp->nr_args > 0) { + if (pev->nargs > 0) { printf(" with"); - for (i = 0; i < pp->nr_args; i++) - printf(" %s", pp->args[i]); + for (i = 0; i < pev->nargs; i++) { + ret = synthesize_perf_probe_arg(&pev->args[i], + buf, 128); + if (ret < 0) + break; + printf(" %s", buf); + } } printf(")\n"); + free(place); + return ret; } /* List up current perf-probe events */ -void show_perf_probe_events(void) +int show_perf_probe_events(void) { - int fd; - struct probe_point pp; + int fd, ret; + struct kprobe_trace_event tev; + struct perf_probe_event pev; struct strlist *rawlist; struct str_node *ent; - fd = open_kprobe_events(O_RDONLY, 0); - rawlist = get_trace_kprobe_event_rawlist(fd); + setup_pager(); + ret = init_vmlinux(); + if (ret < 0) + return ret; + + memset(&tev, 0, sizeof(tev)); + memset(&pev, 0, sizeof(pev)); + + fd = open_kprobe_events(false); + if (fd < 0) + return fd; + + rawlist = get_kprobe_trace_command_rawlist(fd); close(fd); + if (!rawlist) + return -ENOENT; strlist__for_each(ent, rawlist) { - parse_trace_kprobe_event(ent->s, &pp); - /* Synthesize only event probe point */ - synthesize_perf_probe_point(&pp); - /* Show an event */ - show_perf_probe_event(pp.event, pp.probes[0], &pp); - clear_probe_point(&pp); + ret = parse_kprobe_trace_command(ent->s, &tev); + if (ret >= 0) { + ret = convert_to_perf_probe_event(&tev, &pev); + if (ret >= 0) + ret = show_perf_probe_event(&pev); + } + clear_perf_probe_event(&pev); + clear_kprobe_trace_event(&tev); + if (ret < 0) + break; } - strlist__delete(rawlist); + + return ret; } /* Get current perf-probe event names */ -static struct strlist *get_perf_event_names(int fd, bool include_group) +static struct strlist *get_kprobe_trace_event_names(int fd, bool include_group) { char buf[128]; struct strlist *sl, *rawlist; struct str_node *ent; - struct probe_point pp; + struct kprobe_trace_event tev; + int ret = 0; - memset(&pp, 0, sizeof(pp)); - rawlist = get_trace_kprobe_event_rawlist(fd); + memset(&tev, 0, sizeof(tev)); + rawlist = get_kprobe_trace_command_rawlist(fd); sl = strlist__new(true, NULL); strlist__for_each(ent, rawlist) { - parse_trace_kprobe_event(ent->s, &pp); + ret = parse_kprobe_trace_command(ent->s, &tev); + if (ret < 0) + break; if (include_group) { - if (e_snprintf(buf, 128, "%s:%s", pp.group, - pp.event) < 0) - die("Failed to copy group:event name."); - strlist__add(sl, buf); + ret = e_snprintf(buf, 128, "%s:%s", tev.group, + tev.event); + if (ret >= 0) + ret = strlist__add(sl, buf); } else - strlist__add(sl, pp.event); - clear_probe_point(&pp); + ret = strlist__add(sl, tev.event); + clear_kprobe_trace_event(&tev); + if (ret < 0) + break; } - strlist__delete(rawlist); + if (ret < 0) { + strlist__delete(sl); + return NULL; + } return sl; } -static void write_trace_kprobe_event(int fd, const char *buf) +static int write_kprobe_trace_event(int fd, struct kprobe_trace_event *tev) { - int ret; + int ret = 0; + char *buf = synthesize_kprobe_trace_command(tev); + + if (!buf) { + pr_debug("Failed to synthesize kprobe trace event.\n"); + return -EINVAL; + } pr_debug("Writing event: %s\n", buf); - ret = write(fd, buf, strlen(buf)); - if (ret <= 0) - die("Failed to write event: %s", strerror(errno)); + if (!probe_event_dry_run) { + ret = write(fd, buf, strlen(buf)); + if (ret <= 0) + pr_warning("Failed to write event: %s\n", + strerror(errno)); + } + free(buf); + return ret; } -static void get_new_event_name(char *buf, size_t len, const char *base, - struct strlist *namelist, bool allow_suffix) +static int get_new_event_name(char *buf, size_t len, const char *base, + struct strlist *namelist, bool allow_suffix) { int i, ret; /* Try no suffix */ ret = e_snprintf(buf, len, "%s", base); - if (ret < 0) - die("snprintf() failed: %s", strerror(-ret)); + if (ret < 0) { + pr_debug("snprintf() failed: %s\n", strerror(-ret)); + return ret; + } if (!strlist__has_entry(namelist, buf)) - return; + return 0; if (!allow_suffix) { pr_warning("Error: event \"%s\" already exists. " "(Use -f to force duplicates.)\n", base); - die("Can't add new event."); + return -EEXIST; } /* Try to add suffix */ for (i = 1; i < MAX_EVENT_INDEX; i++) { ret = e_snprintf(buf, len, "%s_%d", base, i); - if (ret < 0) - die("snprintf() failed: %s", strerror(-ret)); + if (ret < 0) { + pr_debug("snprintf() failed: %s\n", strerror(-ret)); + return ret; + } if (!strlist__has_entry(namelist, buf)) break; } - if (i == MAX_EVENT_INDEX) - die("Too many events are on the same function."); + if (i == MAX_EVENT_INDEX) { + pr_warning("Too many events are on the same function.\n"); + ret = -ERANGE; + } + + return ret; } -void add_trace_kprobe_events(struct probe_point *probes, int nr_probes, - bool force_add) +static int __add_kprobe_trace_events(struct perf_probe_event *pev, + struct kprobe_trace_event *tevs, + int ntevs, bool allow_suffix) { - int i, j, fd; - struct probe_point *pp; - char buf[MAX_CMDLEN]; - char event[64]; + int i, fd, ret; + struct kprobe_trace_event *tev = NULL; + char buf[64]; + const char *event, *group; struct strlist *namelist; - bool allow_suffix; - fd = open_kprobe_events(O_RDWR, O_APPEND); + fd = open_kprobe_events(true); + if (fd < 0) + return fd; /* Get current event names */ - namelist = get_perf_event_names(fd, false); - - for (j = 0; j < nr_probes; j++) { - pp = probes + j; - if (!pp->event) - pp->event = strdup(pp->function); - if (!pp->group) - pp->group = strdup(PERFPROBE_GROUP); - DIE_IF(!pp->event || !pp->group); - /* If force_add is true, suffix search is allowed */ - allow_suffix = force_add; - for (i = 0; i < pp->found; i++) { - /* Get an unused new event name */ - get_new_event_name(event, 64, pp->event, namelist, - allow_suffix); - snprintf(buf, MAX_CMDLEN, "%c:%s/%s %s\n", - pp->retprobe ? 'r' : 'p', - pp->group, event, - pp->probes[i]); - write_trace_kprobe_event(fd, buf); - printf("Added new event:\n"); - /* Get the first parameter (probe-point) */ - sscanf(pp->probes[i], "%s", buf); - show_perf_probe_event(event, buf, pp); - /* Add added event name to namelist */ - strlist__add(namelist, event); - /* - * Probes after the first probe which comes from same - * user input are always allowed to add suffix, because - * there might be several addresses corresponding to - * one code line. - */ - allow_suffix = true; + namelist = get_kprobe_trace_event_names(fd, false); + if (!namelist) { + pr_debug("Failed to get current event list.\n"); + return -EIO; + } + + ret = 0; + printf("Add new event%s\n", (ntevs > 1) ? "s:" : ":"); + for (i = 0; i < ntevs; i++) { + tev = &tevs[i]; + if (pev->event) + event = pev->event; + else + if (pev->point.function) + event = pev->point.function; + else + event = tev->point.symbol; + if (pev->group) + group = pev->group; + else + group = PERFPROBE_GROUP; + + /* Get an unused new event name */ + ret = get_new_event_name(buf, 64, event, + namelist, allow_suffix); + if (ret < 0) + break; + event = buf; + + tev->event = strdup(event); + tev->group = strdup(group); + if (tev->event == NULL || tev->group == NULL) { + ret = -ENOMEM; + break; } + ret = write_kprobe_trace_event(fd, tev); + if (ret < 0) + break; + /* Add added event name to namelist */ + strlist__add(namelist, event); + + /* Trick here - save current event/group */ + event = pev->event; + group = pev->group; + pev->event = tev->event; + pev->group = tev->group; + show_perf_probe_event(pev); + /* Trick here - restore current event/group */ + pev->event = (char *)event; + pev->group = (char *)group; + + /* + * Probes after the first probe which comes from same + * user input are always allowed to add suffix, because + * there might be several addresses corresponding to + * one code line. + */ + allow_suffix = true; + } + + if (ret >= 0) { + /* Show how to use the event. */ + printf("\nYou can now use it on all perf tools, such as:\n\n"); + printf("\tperf record -e %s:%s -aR sleep 1\n\n", tev->group, + tev->event); } - /* Show how to use the event. */ - printf("\nYou can now use it on all perf tools, such as:\n\n"); - printf("\tperf record -e %s:%s -a sleep 1\n\n", PERFPROBE_GROUP, event); strlist__delete(namelist); close(fd); + return ret; } -static void __del_trace_kprobe_event(int fd, struct str_node *ent) +static int convert_to_kprobe_trace_events(struct perf_probe_event *pev, + struct kprobe_trace_event **tevs, + int max_tevs) +{ + struct symbol *sym; + int ret = 0, i; + struct kprobe_trace_event *tev; + + /* Convert perf_probe_event with debuginfo */ + ret = try_to_find_kprobe_trace_events(pev, tevs, max_tevs); + if (ret != 0) + return ret; + + /* Allocate trace event buffer */ + tev = *tevs = zalloc(sizeof(struct kprobe_trace_event)); + if (tev == NULL) + return -ENOMEM; + + /* Copy parameters */ + tev->point.symbol = strdup(pev->point.function); + if (tev->point.symbol == NULL) { + ret = -ENOMEM; + goto error; + } + tev->point.offset = pev->point.offset; + tev->nargs = pev->nargs; + if (tev->nargs) { + tev->args = zalloc(sizeof(struct kprobe_trace_arg) + * tev->nargs); + if (tev->args == NULL) { + ret = -ENOMEM; + goto error; + } + for (i = 0; i < tev->nargs; i++) { + if (pev->args[i].name) { + tev->args[i].name = strdup(pev->args[i].name); + if (tev->args[i].name == NULL) { + ret = -ENOMEM; + goto error; + } + } + tev->args[i].value = strdup(pev->args[i].var); + if (tev->args[i].value == NULL) { + ret = -ENOMEM; + goto error; + } + if (pev->args[i].type) { + tev->args[i].type = strdup(pev->args[i].type); + if (tev->args[i].type == NULL) { + ret = -ENOMEM; + goto error; + } + } + } + } + + /* Currently just checking function name from symbol map */ + sym = map__find_symbol_by_name(machine.vmlinux_maps[MAP__FUNCTION], + tev->point.symbol, NULL); + if (!sym) { + pr_warning("Kernel symbol \'%s\' not found.\n", + tev->point.symbol); + ret = -ENOENT; + goto error; + } + + return 1; +error: + clear_kprobe_trace_event(tev); + free(tev); + *tevs = NULL; + return ret; +} + +struct __event_package { + struct perf_probe_event *pev; + struct kprobe_trace_event *tevs; + int ntevs; +}; + +int add_perf_probe_events(struct perf_probe_event *pevs, int npevs, + bool force_add, int max_tevs) +{ + int i, j, ret; + struct __event_package *pkgs; + + pkgs = zalloc(sizeof(struct __event_package) * npevs); + if (pkgs == NULL) + return -ENOMEM; + + /* Init vmlinux path */ + ret = init_vmlinux(); + if (ret < 0) + return ret; + + /* Loop 1: convert all events */ + for (i = 0; i < npevs; i++) { + pkgs[i].pev = &pevs[i]; + /* Convert with or without debuginfo */ + ret = convert_to_kprobe_trace_events(pkgs[i].pev, + &pkgs[i].tevs, max_tevs); + if (ret < 0) + goto end; + pkgs[i].ntevs = ret; + } + + /* Loop 2: add all events */ + for (i = 0; i < npevs && ret >= 0; i++) + ret = __add_kprobe_trace_events(pkgs[i].pev, pkgs[i].tevs, + pkgs[i].ntevs, force_add); +end: + /* Loop 3: cleanup trace events */ + for (i = 0; i < npevs; i++) + for (j = 0; j < pkgs[i].ntevs; j++) + clear_kprobe_trace_event(&pkgs[i].tevs[j]); + + return ret; +} + +static int __del_trace_kprobe_event(int fd, struct str_node *ent) { char *p; char buf[128]; + int ret; /* Convert from perf-probe event to trace-kprobe event */ - if (e_snprintf(buf, 128, "-:%s", ent->s) < 0) - die("Failed to copy event."); + ret = e_snprintf(buf, 128, "-:%s", ent->s); + if (ret < 0) + goto error; + p = strchr(buf + 2, ':'); - if (!p) - die("Internal error: %s should have ':' but not.", ent->s); + if (!p) { + pr_debug("Internal error: %s should have ':' but not.\n", + ent->s); + ret = -ENOTSUP; + goto error; + } *p = '/'; - write_trace_kprobe_event(fd, buf); + pr_debug("Writing event: %s\n", buf); + ret = write(fd, buf, strlen(buf)); + if (ret < 0) + goto error; + printf("Remove event: %s\n", ent->s); + return 0; +error: + pr_warning("Failed to delete event: %s\n", strerror(-ret)); + return ret; } -static void del_trace_kprobe_event(int fd, const char *group, - const char *event, struct strlist *namelist) +static int del_trace_kprobe_event(int fd, const char *group, + const char *event, struct strlist *namelist) { char buf[128]; struct str_node *ent, *n; - int found = 0; + int found = 0, ret = 0; - if (e_snprintf(buf, 128, "%s:%s", group, event) < 0) - die("Failed to copy event."); + ret = e_snprintf(buf, 128, "%s:%s", group, event); + if (ret < 0) { + pr_err("Failed to copy event."); + return ret; + } if (strpbrk(buf, "*?")) { /* Glob-exp */ strlist__for_each_safe(ent, n, namelist) if (strglobmatch(ent->s, buf)) { found++; - __del_trace_kprobe_event(fd, ent); + ret = __del_trace_kprobe_event(fd, ent); + if (ret < 0) + break; strlist__remove(namelist, ent); } } else { ent = strlist__find(namelist, buf); if (ent) { found++; - __del_trace_kprobe_event(fd, ent); - strlist__remove(namelist, ent); + ret = __del_trace_kprobe_event(fd, ent); + if (ret >= 0) + strlist__remove(namelist, ent); } } - if (found == 0) - pr_info("Info: event \"%s\" does not exist, could not remove it.\n", buf); + if (found == 0 && ret >= 0) + pr_info("Info: Event \"%s\" does not exist.\n", buf); + + return ret; } -void del_trace_kprobe_events(struct strlist *dellist) +int del_perf_probe_events(struct strlist *dellist) { - int fd; + int fd, ret = 0; const char *group, *event; char *p, *str; struct str_node *ent; struct strlist *namelist; - fd = open_kprobe_events(O_RDWR, O_APPEND); + fd = open_kprobe_events(true); + if (fd < 0) + return fd; + /* Get current event names */ - namelist = get_perf_event_names(fd, true); + namelist = get_kprobe_trace_event_names(fd, true); + if (namelist == NULL) + return -EINVAL; strlist__for_each(ent, dellist) { str = strdup(ent->s); - if (!str) - die("Failed to copy event."); + if (str == NULL) { + ret = -ENOMEM; + break; + } pr_debug("Parsing: %s\n", str); p = strchr(str, ':'); if (p) { @@ -668,10 +1633,14 @@ void del_trace_kprobe_events(struct strlist *dellist) event = str; } pr_debug("Group: %s, Event: %s\n", group, event); - del_trace_kprobe_event(fd, group, event, namelist); + ret = del_trace_kprobe_event(fd, group, event, namelist); free(str); + if (ret < 0) + break; } strlist__delete(namelist); close(fd); + + return ret; } diff --git a/tools/perf/util/probe-event.h b/tools/perf/util/probe-event.h index 7f1d499118c0..e9db1a214ca4 100644 --- a/tools/perf/util/probe-event.h +++ b/tools/perf/util/probe-event.h @@ -2,19 +2,125 @@ #define _PROBE_EVENT_H #include <stdbool.h> -#include "probe-finder.h" #include "strlist.h" -extern void parse_perf_probe_event(const char *str, struct probe_point *pp, - bool *need_dwarf); -extern int synthesize_perf_probe_point(struct probe_point *pp); -extern int synthesize_perf_probe_event(struct probe_point *pp); -extern void parse_trace_kprobe_event(const char *str, struct probe_point *pp); -extern int synthesize_trace_kprobe_event(struct probe_point *pp); -extern void add_trace_kprobe_events(struct probe_point *probes, int nr_probes, - bool force_add); -extern void del_trace_kprobe_events(struct strlist *dellist); -extern void show_perf_probe_events(void); +extern bool probe_event_dry_run; + +/* kprobe-tracer tracing point */ +struct kprobe_trace_point { + char *symbol; /* Base symbol */ + unsigned long offset; /* Offset from symbol */ + bool retprobe; /* Return probe flag */ +}; + +/* kprobe-tracer tracing argument referencing offset */ +struct kprobe_trace_arg_ref { + struct kprobe_trace_arg_ref *next; /* Next reference */ + long offset; /* Offset value */ +}; + +/* kprobe-tracer tracing argument */ +struct kprobe_trace_arg { + char *name; /* Argument name */ + char *value; /* Base value */ + char *type; /* Type name */ + struct kprobe_trace_arg_ref *ref; /* Referencing offset */ +}; + +/* kprobe-tracer tracing event (point + arg) */ +struct kprobe_trace_event { + char *event; /* Event name */ + char *group; /* Group name */ + struct kprobe_trace_point point; /* Trace point */ + int nargs; /* Number of args */ + struct kprobe_trace_arg *args; /* Arguments */ +}; + +/* Perf probe probing point */ +struct perf_probe_point { + char *file; /* File path */ + char *function; /* Function name */ + int line; /* Line number */ + bool retprobe; /* Return probe flag */ + char *lazy_line; /* Lazy matching pattern */ + unsigned long offset; /* Offset from function entry */ +}; + +/* Perf probe probing argument field chain */ +struct perf_probe_arg_field { + struct perf_probe_arg_field *next; /* Next field */ + char *name; /* Name of the field */ + bool ref; /* Referencing flag */ +}; + +/* Perf probe probing argument */ +struct perf_probe_arg { + char *name; /* Argument name */ + char *var; /* Variable name */ + char *type; /* Type name */ + struct perf_probe_arg_field *field; /* Structure fields */ +}; + +/* Perf probe probing event (point + arg) */ +struct perf_probe_event { + char *event; /* Event name */ + char *group; /* Group name */ + struct perf_probe_point point; /* Probe point */ + int nargs; /* Number of arguments */ + struct perf_probe_arg *args; /* Arguments */ +}; + + +/* Line number container */ +struct line_node { + struct list_head list; + int line; +}; + +/* Line range */ +struct line_range { + char *file; /* File name */ + char *function; /* Function name */ + int start; /* Start line number */ + int end; /* End line number */ + int offset; /* Start line offset */ + char *path; /* Real path name */ + struct list_head line_list; /* Visible lines */ +}; + +/* Command string to events */ +extern int parse_perf_probe_command(const char *cmd, + struct perf_probe_event *pev); +extern int parse_kprobe_trace_command(const char *cmd, + struct kprobe_trace_event *tev); + +/* Events to command string */ +extern char *synthesize_perf_probe_command(struct perf_probe_event *pev); +extern char *synthesize_kprobe_trace_command(struct kprobe_trace_event *tev); +extern int synthesize_perf_probe_arg(struct perf_probe_arg *pa, char *buf, + size_t len); + +/* Check the perf_probe_event needs debuginfo */ +extern bool perf_probe_event_need_dwarf(struct perf_probe_event *pev); + +/* Convert from kprobe_trace_event to perf_probe_event */ +extern int convert_to_perf_probe_event(struct kprobe_trace_event *tev, + struct perf_probe_event *pev); + +/* Release event contents */ +extern void clear_perf_probe_event(struct perf_probe_event *pev); +extern void clear_kprobe_trace_event(struct kprobe_trace_event *tev); + +/* Command string to line-range */ +extern int parse_line_range_desc(const char *cmd, struct line_range *lr); + + +extern int add_perf_probe_events(struct perf_probe_event *pevs, int npevs, + bool force_add, int max_probe_points); +extern int del_perf_probe_events(struct strlist *dellist); +extern int show_perf_probe_events(void); +extern int show_line_range(struct line_range *lr); + /* Maximum index number of event-name postfix */ #define MAX_EVENT_INDEX 1024 diff --git a/tools/perf/util/probe-finder.c b/tools/perf/util/probe-finder.c index 4b852c0d16a5..d964cb199c67 100644 --- a/tools/perf/util/probe-finder.c +++ b/tools/perf/util/probe-finder.c @@ -31,72 +31,16 @@ #include <string.h> #include <stdarg.h> #include <ctype.h> +#include <dwarf-regs.h> +#include "string.h" #include "event.h" #include "debug.h" #include "util.h" #include "probe-finder.h" - -/* Dwarf_Die Linkage to parent Die */ -struct die_link { - struct die_link *parent; /* Parent die */ - Dwarf_Die die; /* Current die */ -}; - -static Dwarf_Debug __dw_debug; -static Dwarf_Error __dw_error; - -/* - * Generic dwarf analysis helpers - */ - -#define X86_32_MAX_REGS 8 -const char *x86_32_regs_table[X86_32_MAX_REGS] = { - "%ax", - "%cx", - "%dx", - "%bx", - "$stack", /* Stack address instead of %sp */ - "%bp", - "%si", - "%di", -}; - -#define X86_64_MAX_REGS 16 -const char *x86_64_regs_table[X86_64_MAX_REGS] = { - "%ax", - "%dx", - "%cx", - "%bx", - "%si", - "%di", - "%bp", - "%sp", - "%r8", - "%r9", - "%r10", - "%r11", - "%r12", - "%r13", - "%r14", - "%r15", -}; - -/* TODO: switching by dwarf address size */ -#ifdef __x86_64__ -#define ARCH_MAX_REGS X86_64_MAX_REGS -#define arch_regs_table x86_64_regs_table -#else -#define ARCH_MAX_REGS X86_32_MAX_REGS -#define arch_regs_table x86_32_regs_table -#endif - -/* Return architecture dependent register string (for kprobe-tracer) */ -static const char *get_arch_regstr(unsigned int n) -{ - return (n <= ARCH_MAX_REGS) ? arch_regs_table[n] : NULL; -} +/* Kprobe tracer basic type is up to u64 */ +#define MAX_BASIC_TYPE_BITS 64 /* * Compare the tail of two strings. @@ -113,256 +57,299 @@ static int strtailcmp(const char *s1, const char *s2) return 0; } -/* Find the fileno of the target file. */ -static Dwarf_Unsigned cu_find_fileno(Dwarf_Die cu_die, const char *fname) +/* Line number list operations */ + +/* Add a line to line number list */ +static int line_list__add_line(struct list_head *head, int line) +{ + struct line_node *ln; + struct list_head *p; + + /* Reverse search, because new line will be the last one */ + list_for_each_entry_reverse(ln, head, list) { + if (ln->line < line) { + p = &ln->list; + goto found; + } else if (ln->line == line) /* Already exist */ + return 1; + } + /* List is empty, or the smallest entry */ + p = head; +found: + pr_debug("line list: add a line %u\n", line); + ln = zalloc(sizeof(struct line_node)); + if (ln == NULL) + return -ENOMEM; + ln->line = line; + INIT_LIST_HEAD(&ln->list); + list_add(&ln->list, p); + return 0; +} + +/* Check if the line in line number list */ +static int line_list__has_line(struct list_head *head, int line) +{ + struct line_node *ln; + + /* Reverse search, because new line will be the last one */ + list_for_each_entry(ln, head, list) + if (ln->line == line) + return 1; + + return 0; +} + +/* Init line number list */ +static void line_list__init(struct list_head *head) +{ + INIT_LIST_HEAD(head); +} + +/* Free line number list */ +static void line_list__free(struct list_head *head) +{ + struct line_node *ln; + while (!list_empty(head)) { + ln = list_first_entry(head, struct line_node, list); + list_del(&ln->list); + free(ln); + } +} + +/* Dwarf wrappers */ + +/* Find the realpath of the target file. */ +static const char *cu_find_realpath(Dwarf_Die *cu_die, const char *fname) { - Dwarf_Signed cnt, i; - Dwarf_Unsigned found = 0; - char **srcs; + Dwarf_Files *files; + size_t nfiles, i; + const char *src = NULL; int ret; if (!fname) - return 0; + return NULL; - ret = dwarf_srcfiles(cu_die, &srcs, &cnt, &__dw_error); - if (ret == DW_DLV_OK) { - for (i = 0; i < cnt && !found; i++) { - if (strtailcmp(srcs[i], fname) == 0) - found = i + 1; - dwarf_dealloc(__dw_debug, srcs[i], DW_DLA_STRING); - } - for (; i < cnt; i++) - dwarf_dealloc(__dw_debug, srcs[i], DW_DLA_STRING); - dwarf_dealloc(__dw_debug, srcs, DW_DLA_LIST); + ret = dwarf_getsrcfiles(cu_die, &files, &nfiles); + if (ret != 0) + return NULL; + + for (i = 0; i < nfiles; i++) { + src = dwarf_filesrc(files, i, NULL, NULL); + if (strtailcmp(src, fname) == 0) + break; } - if (found) - pr_debug("found fno: %d\n", (int)found); - return found; + if (i == nfiles) + return NULL; + return src; } /* Compare diename and tname */ -static int die_compare_name(Dwarf_Die dw_die, const char *tname) +static bool die_compare_name(Dwarf_Die *dw_die, const char *tname) { - char *name; - int ret; - ret = dwarf_diename(dw_die, &name, &__dw_error); - DIE_IF(ret == DW_DLV_ERROR); - if (ret == DW_DLV_OK) { - ret = strcmp(tname, name); - dwarf_dealloc(__dw_debug, name, DW_DLA_STRING); - } else - ret = -1; - return ret; + const char *name; + name = dwarf_diename(dw_die); + return name ? strcmp(tname, name) : -1; } -/* Check the address is in the subprogram(function). */ -static int die_within_subprogram(Dwarf_Die sp_die, Dwarf_Addr addr, - Dwarf_Signed *offs) +/* Get type die, but skip qualifiers and typedef */ +static Dwarf_Die *die_get_real_type(Dwarf_Die *vr_die, Dwarf_Die *die_mem) { - Dwarf_Addr lopc, hipc; - int ret; - - /* TODO: check ranges */ - ret = dwarf_lowpc(sp_die, &lopc, &__dw_error); - DIE_IF(ret == DW_DLV_ERROR); - if (ret == DW_DLV_NO_ENTRY) - return 0; - ret = dwarf_highpc(sp_die, &hipc, &__dw_error); - DIE_IF(ret != DW_DLV_OK); - if (lopc <= addr && addr < hipc) { - *offs = addr - lopc; - return 1; - } else - return 0; + Dwarf_Attribute attr; + int tag; + + do { + if (dwarf_attr(vr_die, DW_AT_type, &attr) == NULL || + dwarf_formref_die(&attr, die_mem) == NULL) + return NULL; + + tag = dwarf_tag(die_mem); + vr_die = die_mem; + } while (tag == DW_TAG_const_type || + tag == DW_TAG_restrict_type || + tag == DW_TAG_volatile_type || + tag == DW_TAG_shared_type || + tag == DW_TAG_typedef); + + return die_mem; } -/* Check the die is inlined function */ -static Dwarf_Bool die_inlined_subprogram(Dwarf_Die dw_die) +static bool die_is_signed_type(Dwarf_Die *tp_die) { - /* TODO: check strictly */ - Dwarf_Bool inl; - int ret; + Dwarf_Attribute attr; + Dwarf_Word ret; + + if (dwarf_attr(tp_die, DW_AT_encoding, &attr) == NULL || + dwarf_formudata(&attr, &ret) != 0) + return false; - ret = dwarf_hasattr(dw_die, DW_AT_inline, &inl, &__dw_error); - DIE_IF(ret == DW_DLV_ERROR); - return inl; + return (ret == DW_ATE_signed_char || ret == DW_ATE_signed || + ret == DW_ATE_signed_fixed); } -/* Get the offset of abstruct_origin */ -static Dwarf_Off die_get_abstract_origin(Dwarf_Die dw_die) +static int die_get_byte_size(Dwarf_Die *tp_die) { Dwarf_Attribute attr; - Dwarf_Off cu_offs; - int ret; + Dwarf_Word ret; + + if (dwarf_attr(tp_die, DW_AT_byte_size, &attr) == NULL || + dwarf_formudata(&attr, &ret) != 0) + return 0; - ret = dwarf_attr(dw_die, DW_AT_abstract_origin, &attr, &__dw_error); - DIE_IF(ret != DW_DLV_OK); - ret = dwarf_formref(attr, &cu_offs, &__dw_error); - DIE_IF(ret != DW_DLV_OK); - dwarf_dealloc(__dw_debug, attr, DW_DLA_ATTR); - return cu_offs; + return (int)ret; } -/* Get entry pc(or low pc, 1st entry of ranges) of the die */ -static Dwarf_Addr die_get_entrypc(Dwarf_Die dw_die) +/* Get data_member_location offset */ +static int die_get_data_member_location(Dwarf_Die *mb_die, Dwarf_Word *offs) { Dwarf_Attribute attr; - Dwarf_Addr addr; - Dwarf_Off offs; - Dwarf_Ranges *ranges; - Dwarf_Signed cnt; + Dwarf_Op *expr; + size_t nexpr; int ret; - /* Try to get entry pc */ - ret = dwarf_attr(dw_die, DW_AT_entry_pc, &attr, &__dw_error); - DIE_IF(ret == DW_DLV_ERROR); - if (ret == DW_DLV_OK) { - ret = dwarf_formaddr(attr, &addr, &__dw_error); - DIE_IF(ret != DW_DLV_OK); - dwarf_dealloc(__dw_debug, attr, DW_DLA_ATTR); - return addr; - } - - /* Try to get low pc */ - ret = dwarf_lowpc(dw_die, &addr, &__dw_error); - DIE_IF(ret == DW_DLV_ERROR); - if (ret == DW_DLV_OK) - return addr; - - /* Try to get ranges */ - ret = dwarf_attr(dw_die, DW_AT_ranges, &attr, &__dw_error); - DIE_IF(ret != DW_DLV_OK); - ret = dwarf_formref(attr, &offs, &__dw_error); - DIE_IF(ret != DW_DLV_OK); - ret = dwarf_get_ranges(__dw_debug, offs, &ranges, &cnt, NULL, - &__dw_error); - DIE_IF(ret != DW_DLV_OK); - addr = ranges[0].dwr_addr1; - dwarf_ranges_dealloc(__dw_debug, ranges, cnt); - return addr; + if (dwarf_attr(mb_die, DW_AT_data_member_location, &attr) == NULL) + return -ENOENT; + + if (dwarf_formudata(&attr, offs) != 0) { + /* DW_AT_data_member_location should be DW_OP_plus_uconst */ + ret = dwarf_getlocation(&attr, &expr, &nexpr); + if (ret < 0 || nexpr == 0) + return -ENOENT; + + if (expr[0].atom != DW_OP_plus_uconst || nexpr != 1) { + pr_debug("Unable to get offset:Unexpected OP %x (%zd)\n", + expr[0].atom, nexpr); + return -ENOTSUP; + } + *offs = (Dwarf_Word)expr[0].number; + } + return 0; } -/* - * Search a Die from Die tree. - * Note: cur_link->die should be deallocated in this function. - */ -static int __search_die_tree(struct die_link *cur_link, - int (*die_cb)(struct die_link *, void *), - void *data) +/* Return values for die_find callbacks */ +enum { + DIE_FIND_CB_FOUND = 0, /* End of Search */ + DIE_FIND_CB_CHILD = 1, /* Search only children */ + DIE_FIND_CB_SIBLING = 2, /* Search only siblings */ + DIE_FIND_CB_CONTINUE = 3, /* Search children and siblings */ +}; + +/* Search a child die */ +static Dwarf_Die *die_find_child(Dwarf_Die *rt_die, + int (*callback)(Dwarf_Die *, void *), + void *data, Dwarf_Die *die_mem) { - Dwarf_Die new_die; - struct die_link new_link; + Dwarf_Die child_die; int ret; - if (!die_cb) - return 0; + ret = dwarf_child(rt_die, die_mem); + if (ret != 0) + return NULL; + + do { + ret = callback(die_mem, data); + if (ret == DIE_FIND_CB_FOUND) + return die_mem; - /* Check current die */ - while (!(ret = die_cb(cur_link, data))) { - /* Check child die */ - ret = dwarf_child(cur_link->die, &new_die, &__dw_error); - DIE_IF(ret == DW_DLV_ERROR); - if (ret == DW_DLV_OK) { - new_link.parent = cur_link; - new_link.die = new_die; - ret = __search_die_tree(&new_link, die_cb, data); - if (ret) - break; + if ((ret & DIE_FIND_CB_CHILD) && + die_find_child(die_mem, callback, data, &child_die)) { + memcpy(die_mem, &child_die, sizeof(Dwarf_Die)); + return die_mem; } + } while ((ret & DIE_FIND_CB_SIBLING) && + dwarf_siblingof(die_mem, die_mem) == 0); - /* Move to next sibling */ - ret = dwarf_siblingof(__dw_debug, cur_link->die, &new_die, - &__dw_error); - DIE_IF(ret == DW_DLV_ERROR); - dwarf_dealloc(__dw_debug, cur_link->die, DW_DLA_DIE); - cur_link->die = new_die; - if (ret == DW_DLV_NO_ENTRY) - return 0; - } - dwarf_dealloc(__dw_debug, cur_link->die, DW_DLA_DIE); - return ret; + return NULL; } -/* Search a die in its children's die tree */ -static int search_die_from_children(Dwarf_Die parent_die, - int (*die_cb)(struct die_link *, void *), - void *data) +struct __addr_die_search_param { + Dwarf_Addr addr; + Dwarf_Die *die_mem; +}; + +static int __die_search_func_cb(Dwarf_Die *fn_die, void *data) { - struct die_link new_link; - int ret; + struct __addr_die_search_param *ad = data; - new_link.parent = NULL; - ret = dwarf_child(parent_die, &new_link.die, &__dw_error); - DIE_IF(ret == DW_DLV_ERROR); - if (ret == DW_DLV_OK) - return __search_die_tree(&new_link, die_cb, data); + if (dwarf_tag(fn_die) == DW_TAG_subprogram && + dwarf_haspc(fn_die, ad->addr)) { + memcpy(ad->die_mem, fn_die, sizeof(Dwarf_Die)); + return DWARF_CB_ABORT; + } + return DWARF_CB_OK; +} + +/* Search a real subprogram including this line, */ +static Dwarf_Die *die_find_real_subprogram(Dwarf_Die *cu_die, Dwarf_Addr addr, + Dwarf_Die *die_mem) +{ + struct __addr_die_search_param ad; + ad.addr = addr; + ad.die_mem = die_mem; + /* dwarf_getscopes can't find subprogram. */ + if (!dwarf_getfuncs(cu_die, __die_search_func_cb, &ad, 0)) + return NULL; else - return 0; + return die_mem; } -/* Find a locdesc corresponding to the address */ -static int attr_get_locdesc(Dwarf_Attribute attr, Dwarf_Locdesc *desc, - Dwarf_Addr addr) +/* die_find callback for inline function search */ +static int __die_find_inline_cb(Dwarf_Die *die_mem, void *data) { - Dwarf_Signed lcnt; - Dwarf_Locdesc **llbuf; - int ret, i; + Dwarf_Addr *addr = data; - ret = dwarf_loclist_n(attr, &llbuf, &lcnt, &__dw_error); - DIE_IF(ret != DW_DLV_OK); - ret = DW_DLV_NO_ENTRY; - for (i = 0; i < lcnt; ++i) { - if (llbuf[i]->ld_lopc <= addr && - llbuf[i]->ld_hipc > addr) { - memcpy(desc, llbuf[i], sizeof(Dwarf_Locdesc)); - desc->ld_s = - malloc(sizeof(Dwarf_Loc) * llbuf[i]->ld_cents); - DIE_IF(desc->ld_s == NULL); - memcpy(desc->ld_s, llbuf[i]->ld_s, - sizeof(Dwarf_Loc) * llbuf[i]->ld_cents); - ret = DW_DLV_OK; - break; - } - dwarf_dealloc(__dw_debug, llbuf[i]->ld_s, DW_DLA_LOC_BLOCK); - dwarf_dealloc(__dw_debug, llbuf[i], DW_DLA_LOCDESC); - } - /* Releasing loop */ - for (; i < lcnt; ++i) { - dwarf_dealloc(__dw_debug, llbuf[i]->ld_s, DW_DLA_LOC_BLOCK); - dwarf_dealloc(__dw_debug, llbuf[i], DW_DLA_LOCDESC); - } - dwarf_dealloc(__dw_debug, llbuf, DW_DLA_LIST); - return ret; + if (dwarf_tag(die_mem) == DW_TAG_inlined_subroutine && + dwarf_haspc(die_mem, *addr)) + return DIE_FIND_CB_FOUND; + + return DIE_FIND_CB_CONTINUE; } -/* Get decl_file attribute value (file number) */ -static Dwarf_Unsigned die_get_decl_file(Dwarf_Die sp_die) +/* Similar to dwarf_getfuncs, but returns inlined_subroutine if exists. */ +static Dwarf_Die *die_find_inlinefunc(Dwarf_Die *sp_die, Dwarf_Addr addr, + Dwarf_Die *die_mem) { - Dwarf_Attribute attr; - Dwarf_Unsigned fno; - int ret; + return die_find_child(sp_die, __die_find_inline_cb, &addr, die_mem); +} - ret = dwarf_attr(sp_die, DW_AT_decl_file, &attr, &__dw_error); - DIE_IF(ret != DW_DLV_OK); - dwarf_formudata(attr, &fno, &__dw_error); - DIE_IF(ret != DW_DLV_OK); - dwarf_dealloc(__dw_debug, attr, DW_DLA_ATTR); - return fno; +static int __die_find_variable_cb(Dwarf_Die *die_mem, void *data) +{ + const char *name = data; + int tag; + + tag = dwarf_tag(die_mem); + if ((tag == DW_TAG_formal_parameter || + tag == DW_TAG_variable) && + (die_compare_name(die_mem, name) == 0)) + return DIE_FIND_CB_FOUND; + + return DIE_FIND_CB_CONTINUE; } -/* Get decl_line attribute value (line number) */ -static Dwarf_Unsigned die_get_decl_line(Dwarf_Die sp_die) +/* Find a variable called 'name' */ +static Dwarf_Die *die_find_variable(Dwarf_Die *sp_die, const char *name, + Dwarf_Die *die_mem) { - Dwarf_Attribute attr; - Dwarf_Unsigned lno; - int ret; + return die_find_child(sp_die, __die_find_variable_cb, (void *)name, + die_mem); +} + +static int __die_find_member_cb(Dwarf_Die *die_mem, void *data) +{ + const char *name = data; - ret = dwarf_attr(sp_die, DW_AT_decl_line, &attr, &__dw_error); - DIE_IF(ret != DW_DLV_OK); - dwarf_formudata(attr, &lno, &__dw_error); - DIE_IF(ret != DW_DLV_OK); - dwarf_dealloc(__dw_debug, attr, DW_DLA_ATTR); - return lno; + if ((dwarf_tag(die_mem) == DW_TAG_member) && + (die_compare_name(die_mem, name) == 0)) + return DIE_FIND_CB_FOUND; + + return DIE_FIND_CB_SIBLING; +} + +/* Find a member called 'name' */ +static Dwarf_Die *die_find_member(Dwarf_Die *st_die, const char *name, + Dwarf_Die *die_mem) +{ + return die_find_child(st_die, __die_find_member_cb, (void *)name, + die_mem); } /* @@ -370,361 +357,950 @@ static Dwarf_Unsigned die_get_decl_line(Dwarf_Die sp_die) */ /* Show a location */ -static void show_location(Dwarf_Loc *loc, struct probe_finder *pf) +static int convert_location(Dwarf_Op *op, struct probe_finder *pf) { - Dwarf_Small op; - Dwarf_Unsigned regn; - Dwarf_Signed offs; - int deref = 0, ret; + unsigned int regn; + Dwarf_Word offs = 0; + bool ref = false; const char *regs; - - op = loc->lr_atom; + struct kprobe_trace_arg *tvar = pf->tvar; /* If this is based on frame buffer, set the offset */ - if (op == DW_OP_fbreg) { - deref = 1; - offs = (Dwarf_Signed)loc->lr_number; - op = pf->fbloc.ld_s[0].lr_atom; - loc = &pf->fbloc.ld_s[0]; - } else - offs = 0; - - if (op >= DW_OP_breg0 && op <= DW_OP_breg31) { - regn = op - DW_OP_breg0; - offs += (Dwarf_Signed)loc->lr_number; - deref = 1; - } else if (op >= DW_OP_reg0 && op <= DW_OP_reg31) { - regn = op - DW_OP_reg0; - } else if (op == DW_OP_bregx) { - regn = loc->lr_number; - offs += (Dwarf_Signed)loc->lr_number2; - deref = 1; - } else if (op == DW_OP_regx) { - regn = loc->lr_number; - } else - die("Dwarf_OP %d is not supported.\n", op); + if (op->atom == DW_OP_fbreg) { + if (pf->fb_ops == NULL) { + pr_warning("The attribute of frame base is not " + "supported.\n"); + return -ENOTSUP; + } + ref = true; + offs = op->number; + op = &pf->fb_ops[0]; + } + + if (op->atom >= DW_OP_breg0 && op->atom <= DW_OP_breg31) { + regn = op->atom - DW_OP_breg0; + offs += op->number; + ref = true; + } else if (op->atom >= DW_OP_reg0 && op->atom <= DW_OP_reg31) { + regn = op->atom - DW_OP_reg0; + } else if (op->atom == DW_OP_bregx) { + regn = op->number; + offs += op->number2; + ref = true; + } else if (op->atom == DW_OP_regx) { + regn = op->number; + } else { + pr_warning("DW_OP %x is not supported.\n", op->atom); + return -ENOTSUP; + } regs = get_arch_regstr(regn); - if (!regs) - die("%lld exceeds max register number.\n", regn); + if (!regs) { + pr_warning("Mapping for DWARF register number %u missing on this architecture.", regn); + return -ERANGE; + } - if (deref) - ret = snprintf(pf->buf, pf->len, - " %s=%+lld(%s)", pf->var, offs, regs); - else - ret = snprintf(pf->buf, pf->len, " %s=%s", pf->var, regs); - DIE_IF(ret < 0); - DIE_IF(ret >= pf->len); + tvar->value = strdup(regs); + if (tvar->value == NULL) + return -ENOMEM; + + if (ref) { + tvar->ref = zalloc(sizeof(struct kprobe_trace_arg_ref)); + if (tvar->ref == NULL) + return -ENOMEM; + tvar->ref->offset = (long)offs; + } + return 0; } -/* Show a variables in kprobe event format */ -static void show_variable(Dwarf_Die vr_die, struct probe_finder *pf) +static int convert_variable_type(Dwarf_Die *vr_die, + struct kprobe_trace_arg *targ) { - Dwarf_Attribute attr; - Dwarf_Locdesc ld; + Dwarf_Die type; + char buf[16]; int ret; - ret = dwarf_attr(vr_die, DW_AT_location, &attr, &__dw_error); - if (ret != DW_DLV_OK) - goto error; - ret = attr_get_locdesc(attr, &ld, (pf->addr - pf->cu_base)); - if (ret != DW_DLV_OK) - goto error; - /* TODO? */ - DIE_IF(ld.ld_cents != 1); - show_location(&ld.ld_s[0], pf); - free(ld.ld_s); - dwarf_dealloc(__dw_debug, attr, DW_DLA_ATTR); - return ; -error: - die("Failed to find the location of %s at this address.\n" - " Perhaps, it has been optimized out.\n", pf->var); -} + if (die_get_real_type(vr_die, &type) == NULL) { + pr_warning("Failed to get a type information of %s.\n", + dwarf_diename(vr_die)); + return -ENOENT; + } -static int variable_callback(struct die_link *dlink, void *data) -{ - struct probe_finder *pf = (struct probe_finder *)data; - Dwarf_Half tag; - int ret; + ret = die_get_byte_size(&type) * 8; + if (ret) { + /* Check the bitwidth */ + if (ret > MAX_BASIC_TYPE_BITS) { + pr_info("%s exceeds max-bitwidth." + " Cut down to %d bits.\n", + dwarf_diename(&type), MAX_BASIC_TYPE_BITS); + ret = MAX_BASIC_TYPE_BITS; + } - ret = dwarf_tag(dlink->die, &tag, &__dw_error); - DIE_IF(ret == DW_DLV_ERROR); - if ((tag == DW_TAG_formal_parameter || - tag == DW_TAG_variable) && - (die_compare_name(dlink->die, pf->var) == 0)) { - show_variable(dlink->die, pf); - return 1; + ret = snprintf(buf, 16, "%c%d", + die_is_signed_type(&type) ? 's' : 'u', ret); + if (ret < 0 || ret >= 16) { + if (ret >= 16) + ret = -E2BIG; + pr_warning("Failed to convert variable type: %s\n", + strerror(-ret)); + return ret; + } + targ->type = strdup(buf); + if (targ->type == NULL) + return -ENOMEM; } - /* TODO: Support struct members and arrays */ return 0; } -/* Find a variable in a subprogram die */ -static void find_variable(Dwarf_Die sp_die, struct probe_finder *pf) +static int convert_variable_fields(Dwarf_Die *vr_die, const char *varname, + struct perf_probe_arg_field *field, + struct kprobe_trace_arg_ref **ref_ptr, + Dwarf_Die *die_mem) { + struct kprobe_trace_arg_ref *ref = *ref_ptr; + Dwarf_Die type; + Dwarf_Word offs; int ret; - if (!is_c_varname(pf->var)) { - /* Output raw parameters */ - ret = snprintf(pf->buf, pf->len, " %s", pf->var); - DIE_IF(ret < 0); - DIE_IF(ret >= pf->len); - return ; + pr_debug("converting %s in %s\n", field->name, varname); + if (die_get_real_type(vr_die, &type) == NULL) { + pr_warning("Failed to get the type of %s.\n", varname); + return -ENOENT; } - pr_debug("Searching '%s' variable in context.\n", pf->var); - /* Search child die for local variables and parameters. */ - ret = search_die_from_children(sp_die, variable_callback, pf); - if (!ret) - die("Failed to find '%s' in this function.\n", pf->var); + /* Check the pointer and dereference */ + if (dwarf_tag(&type) == DW_TAG_pointer_type) { + if (!field->ref) { + pr_err("Semantic error: %s must be referred by '->'\n", + field->name); + return -EINVAL; + } + /* Get the type pointed by this pointer */ + if (die_get_real_type(&type, &type) == NULL) { + pr_warning("Failed to get the type of %s.\n", varname); + return -ENOENT; + } + /* Verify it is a data structure */ + if (dwarf_tag(&type) != DW_TAG_structure_type) { + pr_warning("%s is not a data structure.\n", varname); + return -EINVAL; + } + + ref = zalloc(sizeof(struct kprobe_trace_arg_ref)); + if (ref == NULL) + return -ENOMEM; + if (*ref_ptr) + (*ref_ptr)->next = ref; + else + *ref_ptr = ref; + } else { + /* Verify it is a data structure */ + if (dwarf_tag(&type) != DW_TAG_structure_type) { + pr_warning("%s is not a data structure.\n", varname); + return -EINVAL; + } + if (field->ref) { + pr_err("Semantic error: %s must be referred by '.'\n", + field->name); + return -EINVAL; + } + if (!ref) { + pr_warning("Structure on a register is not " + "supported yet.\n"); + return -ENOTSUP; + } + } + + if (die_find_member(&type, field->name, die_mem) == NULL) { + pr_warning("%s(tyep:%s) has no member %s.\n", varname, + dwarf_diename(&type), field->name); + return -EINVAL; + } + + /* Get the offset of the field */ + ret = die_get_data_member_location(die_mem, &offs); + if (ret < 0) { + pr_warning("Failed to get the offset of %s.\n", field->name); + return ret; + } + ref->offset += (long)offs; + + /* Converting next field */ + if (field->next) + return convert_variable_fields(die_mem, field->name, + field->next, &ref, die_mem); + else + return 0; } -/* Get a frame base on the address */ -static void get_current_frame_base(Dwarf_Die sp_die, struct probe_finder *pf) +/* Show a variables in kprobe event format */ +static int convert_variable(Dwarf_Die *vr_die, struct probe_finder *pf) { Dwarf_Attribute attr; + Dwarf_Die die_mem; + Dwarf_Op *expr; + size_t nexpr; int ret; - ret = dwarf_attr(sp_die, DW_AT_frame_base, &attr, &__dw_error); - DIE_IF(ret != DW_DLV_OK); - ret = attr_get_locdesc(attr, &pf->fbloc, (pf->addr - pf->cu_base)); - DIE_IF(ret != DW_DLV_OK); - dwarf_dealloc(__dw_debug, attr, DW_DLA_ATTR); + if (dwarf_attr(vr_die, DW_AT_location, &attr) == NULL) + goto error; + /* TODO: handle more than 1 exprs */ + ret = dwarf_getlocation_addr(&attr, pf->addr, &expr, &nexpr, 1); + if (ret <= 0 || nexpr == 0) + goto error; + + ret = convert_location(expr, pf); + if (ret == 0 && pf->pvar->field) { + ret = convert_variable_fields(vr_die, pf->pvar->var, + pf->pvar->field, &pf->tvar->ref, + &die_mem); + vr_die = &die_mem; + } + if (ret == 0) { + if (pf->pvar->type) { + pf->tvar->type = strdup(pf->pvar->type); + if (pf->tvar->type == NULL) + ret = -ENOMEM; + } else + ret = convert_variable_type(vr_die, pf->tvar); + } + /* *expr will be cached in libdw. Don't free it. */ + return ret; +error: + /* TODO: Support const_value */ + pr_err("Failed to find the location of %s at this address.\n" + " Perhaps, it has been optimized out.\n", pf->pvar->var); + return -ENOENT; } -static void free_current_frame_base(struct probe_finder *pf) +/* Find a variable in a subprogram die */ +static int find_variable(Dwarf_Die *sp_die, struct probe_finder *pf) { - free(pf->fbloc.ld_s); - memset(&pf->fbloc, 0, sizeof(Dwarf_Locdesc)); + Dwarf_Die vr_die; + char buf[32], *ptr; + int ret; + + /* TODO: Support arrays */ + if (pf->pvar->name) + pf->tvar->name = strdup(pf->pvar->name); + else { + ret = synthesize_perf_probe_arg(pf->pvar, buf, 32); + if (ret < 0) + return ret; + ptr = strchr(buf, ':'); /* Change type separator to _ */ + if (ptr) + *ptr = '_'; + pf->tvar->name = strdup(buf); + } + if (pf->tvar->name == NULL) + return -ENOMEM; + + if (!is_c_varname(pf->pvar->var)) { + /* Copy raw parameters */ + pf->tvar->value = strdup(pf->pvar->var); + if (pf->tvar->value == NULL) + return -ENOMEM; + else + return 0; + } + + pr_debug("Searching '%s' variable in context.\n", + pf->pvar->var); + /* Search child die for local variables and parameters. */ + if (!die_find_variable(sp_die, pf->pvar->var, &vr_die)) { + pr_warning("Failed to find '%s' in this function.\n", + pf->pvar->var); + return -ENOENT; + } + return convert_variable(&vr_die, pf); } /* Show a probe point to output buffer */ -static void show_probepoint(Dwarf_Die sp_die, Dwarf_Signed offs, - struct probe_finder *pf) -{ - struct probe_point *pp = pf->pp; - char *name; - char tmp[MAX_PROBE_BUFFER]; - int ret, i, len; - - /* Output name of probe point */ - ret = dwarf_diename(sp_die, &name, &__dw_error); - DIE_IF(ret == DW_DLV_ERROR); - if (ret == DW_DLV_OK) { - ret = snprintf(tmp, MAX_PROBE_BUFFER, "%s+%u", name, - (unsigned int)offs); - /* Copy the function name if possible */ - if (!pp->function) { - pp->function = strdup(name); - pp->offset = offs; +static int convert_probe_point(Dwarf_Die *sp_die, struct probe_finder *pf) +{ + struct kprobe_trace_event *tev; + Dwarf_Addr eaddr; + Dwarf_Die die_mem; + const char *name; + int ret, i; + Dwarf_Attribute fb_attr; + size_t nops; + + if (pf->ntevs == pf->max_tevs) { + pr_warning("Too many( > %d) probe point found.\n", + pf->max_tevs); + return -ERANGE; + } + tev = &pf->tevs[pf->ntevs++]; + + /* If no real subprogram, find a real one */ + if (!sp_die || dwarf_tag(sp_die) != DW_TAG_subprogram) { + sp_die = die_find_real_subprogram(&pf->cu_die, + pf->addr, &die_mem); + if (!sp_die) { + pr_warning("Failed to find probe point in any " + "functions.\n"); + return -ENOENT; } - dwarf_dealloc(__dw_debug, name, DW_DLA_STRING); - } else { + } + + /* Copy the name of probe point */ + name = dwarf_diename(sp_die); + if (name) { + if (dwarf_entrypc(sp_die, &eaddr) != 0) { + pr_warning("Failed to get entry pc of %s\n", + dwarf_diename(sp_die)); + return -ENOENT; + } + tev->point.symbol = strdup(name); + if (tev->point.symbol == NULL) + return -ENOMEM; + tev->point.offset = (unsigned long)(pf->addr - eaddr); + } else /* This function has no name. */ - ret = snprintf(tmp, MAX_PROBE_BUFFER, "0x%llx", pf->addr); - if (!pp->function) { - /* TODO: Use _stext */ - pp->function = strdup(""); - pp->offset = (int)pf->addr; + tev->point.offset = (unsigned long)pf->addr; + + pr_debug("Probe point found: %s+%lu\n", tev->point.symbol, + tev->point.offset); + + /* Get the frame base attribute/ops */ + dwarf_attr(sp_die, DW_AT_frame_base, &fb_attr); + ret = dwarf_getlocation_addr(&fb_attr, pf->addr, &pf->fb_ops, &nops, 1); + if (ret <= 0 || nops == 0) { + pf->fb_ops = NULL; +#if _ELFUTILS_PREREQ(0, 142) + } else if (nops == 1 && pf->fb_ops[0].atom == DW_OP_call_frame_cfa && + pf->cfi != NULL) { + Dwarf_Frame *frame; + if (dwarf_cfi_addrframe(pf->cfi, pf->addr, &frame) != 0 || + dwarf_frame_cfa(frame, &pf->fb_ops, &nops) != 0) { + pr_warning("Failed to get CFA on 0x%jx\n", + (uintmax_t)pf->addr); + return -ENOENT; } +#endif } - DIE_IF(ret < 0); - DIE_IF(ret >= MAX_PROBE_BUFFER); - len = ret; - pr_debug("Probe point found: %s\n", tmp); /* Find each argument */ - get_current_frame_base(sp_die, pf); - for (i = 0; i < pp->nr_args; i++) { - pf->var = pp->args[i]; - pf->buf = &tmp[len]; - pf->len = MAX_PROBE_BUFFER - len; - find_variable(sp_die, pf); - len += strlen(pf->buf); + tev->nargs = pf->pev->nargs; + tev->args = zalloc(sizeof(struct kprobe_trace_arg) * tev->nargs); + if (tev->args == NULL) + return -ENOMEM; + for (i = 0; i < pf->pev->nargs; i++) { + pf->pvar = &pf->pev->args[i]; + pf->tvar = &tev->args[i]; + ret = find_variable(sp_die, pf); + if (ret != 0) + return ret; } - free_current_frame_base(pf); - pp->probes[pp->found] = strdup(tmp); - pp->found++; + /* *pf->fb_ops will be cached in libdw. Don't free it. */ + pf->fb_ops = NULL; + return 0; } -static int probeaddr_callback(struct die_link *dlink, void *data) +/* Find probe point from its line number */ +static int find_probe_point_by_line(struct probe_finder *pf) { - struct probe_finder *pf = (struct probe_finder *)data; - Dwarf_Half tag; - Dwarf_Signed offs; - int ret; + Dwarf_Lines *lines; + Dwarf_Line *line; + size_t nlines, i; + Dwarf_Addr addr; + int lineno; + int ret = 0; - ret = dwarf_tag(dlink->die, &tag, &__dw_error); - DIE_IF(ret == DW_DLV_ERROR); - /* Check the address is in this subprogram */ - if (tag == DW_TAG_subprogram && - die_within_subprogram(dlink->die, pf->addr, &offs)) { - show_probepoint(dlink->die, offs, pf); - return 1; + if (dwarf_getsrclines(&pf->cu_die, &lines, &nlines) != 0) { + pr_warning("No source lines found in this CU.\n"); + return -ENOENT; } - return 0; + + for (i = 0; i < nlines && ret == 0; i++) { + line = dwarf_onesrcline(lines, i); + if (dwarf_lineno(line, &lineno) != 0 || + lineno != pf->lno) + continue; + + /* TODO: Get fileno from line, but how? */ + if (strtailcmp(dwarf_linesrc(line, NULL, NULL), pf->fname) != 0) + continue; + + if (dwarf_lineaddr(line, &addr) != 0) { + pr_warning("Failed to get the address of the line.\n"); + return -ENOENT; + } + pr_debug("Probe line found: line[%d]:%d addr:0x%jx\n", + (int)i, lineno, (uintmax_t)addr); + pf->addr = addr; + + ret = convert_probe_point(NULL, pf); + /* Continuing, because target line might be inlined. */ + } + return ret; } -/* Find probe point from its line number */ -static void find_by_line(struct probe_finder *pf) +/* Find lines which match lazy pattern */ +static int find_lazy_match_lines(struct list_head *head, + const char *fname, const char *pat) { - Dwarf_Signed cnt, i, clm; - Dwarf_Line *lines; - Dwarf_Unsigned lineno = 0; + char *fbuf, *p1, *p2; + int fd, line, nlines = -1; + struct stat st; + + fd = open(fname, O_RDONLY); + if (fd < 0) { + pr_warning("Failed to open %s: %s\n", fname, strerror(-fd)); + return -errno; + } + + if (fstat(fd, &st) < 0) { + pr_warning("Failed to get the size of %s: %s\n", + fname, strerror(errno)); + nlines = -errno; + goto out_close; + } + + nlines = -ENOMEM; + fbuf = malloc(st.st_size + 2); + if (fbuf == NULL) + goto out_close; + if (read(fd, fbuf, st.st_size) < 0) { + pr_warning("Failed to read %s: %s\n", fname, strerror(errno)); + nlines = -errno; + goto out_free_fbuf; + } + fbuf[st.st_size] = '\n'; /* Dummy line */ + fbuf[st.st_size + 1] = '\0'; + p1 = fbuf; + line = 1; + nlines = 0; + while ((p2 = strchr(p1, '\n')) != NULL) { + *p2 = '\0'; + if (strlazymatch(p1, pat)) { + line_list__add_line(head, line); + nlines++; + } + line++; + p1 = p2 + 1; + } +out_free_fbuf: + free(fbuf); +out_close: + close(fd); + return nlines; +} + +/* Find probe points from lazy pattern */ +static int find_probe_point_lazy(Dwarf_Die *sp_die, struct probe_finder *pf) +{ + Dwarf_Lines *lines; + Dwarf_Line *line; + size_t nlines, i; Dwarf_Addr addr; - Dwarf_Unsigned fno; - int ret; + Dwarf_Die die_mem; + int lineno; + int ret = 0; + + if (list_empty(&pf->lcache)) { + /* Matching lazy line pattern */ + ret = find_lazy_match_lines(&pf->lcache, pf->fname, + pf->pev->point.lazy_line); + if (ret == 0) { + pr_debug("No matched lines found in %s.\n", pf->fname); + return 0; + } else if (ret < 0) + return ret; + } - ret = dwarf_srclines(pf->cu_die, &lines, &cnt, &__dw_error); - DIE_IF(ret != DW_DLV_OK); + if (dwarf_getsrclines(&pf->cu_die, &lines, &nlines) != 0) { + pr_warning("No source lines found in this CU.\n"); + return -ENOENT; + } - for (i = 0; i < cnt; i++) { - ret = dwarf_line_srcfileno(lines[i], &fno, &__dw_error); - DIE_IF(ret != DW_DLV_OK); - if (fno != pf->fno) + for (i = 0; i < nlines && ret >= 0; i++) { + line = dwarf_onesrcline(lines, i); + + if (dwarf_lineno(line, &lineno) != 0 || + !line_list__has_line(&pf->lcache, lineno)) continue; - ret = dwarf_lineno(lines[i], &lineno, &__dw_error); - DIE_IF(ret != DW_DLV_OK); - if (lineno != pf->lno) + /* TODO: Get fileno from line, but how? */ + if (strtailcmp(dwarf_linesrc(line, NULL, NULL), pf->fname) != 0) continue; - ret = dwarf_lineoff(lines[i], &clm, &__dw_error); - DIE_IF(ret != DW_DLV_OK); + if (dwarf_lineaddr(line, &addr) != 0) { + pr_debug("Failed to get the address of line %d.\n", + lineno); + continue; + } + if (sp_die) { + /* Address filtering 1: does sp_die include addr? */ + if (!dwarf_haspc(sp_die, addr)) + continue; + /* Address filtering 2: No child include addr? */ + if (die_find_inlinefunc(sp_die, addr, &die_mem)) + continue; + } - ret = dwarf_lineaddr(lines[i], &addr, &__dw_error); - DIE_IF(ret != DW_DLV_OK); - pr_debug("Probe line found: line[%d]:%u,%d addr:0x%llx\n", - (int)i, (unsigned)lineno, (int)clm, addr); + pr_debug("Probe line found: line[%d]:%d addr:0x%llx\n", + (int)i, lineno, (unsigned long long)addr); pf->addr = addr; - /* Search a real subprogram including this line, */ - ret = search_die_from_children(pf->cu_die, - probeaddr_callback, pf); - if (ret == 0) - die("Probe point is not found in subprograms.\n"); + + ret = convert_probe_point(sp_die, pf); /* Continuing, because target line might be inlined. */ } - dwarf_srclines_dealloc(__dw_debug, lines, cnt); + /* TODO: deallocate lines, but how? */ + return ret; } -/* Search function from function name */ -static int probefunc_callback(struct die_link *dlink, void *data) +/* Callback parameter with return value */ +struct dwarf_callback_param { + void *data; + int retval; +}; + +static int probe_point_inline_cb(Dwarf_Die *in_die, void *data) { - struct probe_finder *pf = (struct probe_finder *)data; - struct probe_point *pp = pf->pp; - struct die_link *lk; - Dwarf_Signed offs; - Dwarf_Half tag; - int ret; + struct dwarf_callback_param *param = data; + struct probe_finder *pf = param->data; + struct perf_probe_point *pp = &pf->pev->point; + Dwarf_Addr addr; - ret = dwarf_tag(dlink->die, &tag, &__dw_error); - DIE_IF(ret == DW_DLV_ERROR); - if (tag == DW_TAG_subprogram) { - if (die_compare_name(dlink->die, pp->function) == 0) { - if (pp->line) { /* Function relative line */ - pf->fno = die_get_decl_file(dlink->die); - pf->lno = die_get_decl_line(dlink->die) - + pp->line; - find_by_line(pf); - return 1; - } - if (die_inlined_subprogram(dlink->die)) { - /* Inlined function, save it. */ - ret = dwarf_die_CU_offset(dlink->die, - &pf->inl_offs, - &__dw_error); - DIE_IF(ret != DW_DLV_OK); - pr_debug("inline definition offset %lld\n", - pf->inl_offs); - return 0; /* Continue to search */ + if (pp->lazy_line) + param->retval = find_probe_point_lazy(in_die, pf); + else { + /* Get probe address */ + if (dwarf_entrypc(in_die, &addr) != 0) { + pr_warning("Failed to get entry pc of %s.\n", + dwarf_diename(in_die)); + param->retval = -ENOENT; + return DWARF_CB_ABORT; + } + pf->addr = addr; + pf->addr += pp->offset; + pr_debug("found inline addr: 0x%jx\n", + (uintmax_t)pf->addr); + + param->retval = convert_probe_point(in_die, pf); + if (param->retval < 0) + return DWARF_CB_ABORT; + } + + return DWARF_CB_OK; +} + +/* Search function from function name */ +static int probe_point_search_cb(Dwarf_Die *sp_die, void *data) +{ + struct dwarf_callback_param *param = data; + struct probe_finder *pf = param->data; + struct perf_probe_point *pp = &pf->pev->point; + + /* Check tag and diename */ + if (dwarf_tag(sp_die) != DW_TAG_subprogram || + die_compare_name(sp_die, pp->function) != 0) + return DWARF_CB_OK; + + pf->fname = dwarf_decl_file(sp_die); + if (pp->line) { /* Function relative line */ + dwarf_decl_line(sp_die, &pf->lno); + pf->lno += pp->line; + param->retval = find_probe_point_by_line(pf); + } else if (!dwarf_func_inline(sp_die)) { + /* Real function */ + if (pp->lazy_line) + param->retval = find_probe_point_lazy(sp_die, pf); + else { + if (dwarf_entrypc(sp_die, &pf->addr) != 0) { + pr_warning("Failed to get entry pc of %s.\n", + dwarf_diename(sp_die)); + param->retval = -ENOENT; + return DWARF_CB_ABORT; } - /* Get probe address */ - pf->addr = die_get_entrypc(dlink->die); pf->addr += pp->offset; /* TODO: Check the address in this function */ - show_probepoint(dlink->die, pp->offset, pf); - return 1; /* Exit; no same symbol in this CU. */ + param->retval = convert_probe_point(sp_die, pf); } - } else if (tag == DW_TAG_inlined_subroutine && pf->inl_offs) { - if (die_get_abstract_origin(dlink->die) == pf->inl_offs) { - /* Get probe address */ - pf->addr = die_get_entrypc(dlink->die); - pf->addr += pp->offset; - pr_debug("found inline addr: 0x%llx\n", pf->addr); - /* Inlined function. Get a real subprogram */ - for (lk = dlink->parent; lk != NULL; lk = lk->parent) { - tag = 0; - dwarf_tag(lk->die, &tag, &__dw_error); - DIE_IF(ret == DW_DLV_ERROR); - if (tag == DW_TAG_subprogram && - !die_inlined_subprogram(lk->die)) - goto found; + } else { + struct dwarf_callback_param _param = {.data = (void *)pf, + .retval = 0}; + /* Inlined function: search instances */ + dwarf_func_inline_instances(sp_die, probe_point_inline_cb, + &_param); + param->retval = _param.retval; + } + + return DWARF_CB_ABORT; /* Exit; no same symbol in this CU. */ +} + +static int find_probe_point_by_func(struct probe_finder *pf) +{ + struct dwarf_callback_param _param = {.data = (void *)pf, + .retval = 0}; + dwarf_getfuncs(&pf->cu_die, probe_point_search_cb, &_param, 0); + return _param.retval; +} + +/* Find kprobe_trace_events specified by perf_probe_event from debuginfo */ +int find_kprobe_trace_events(int fd, struct perf_probe_event *pev, + struct kprobe_trace_event **tevs, int max_tevs) +{ + struct probe_finder pf = {.pev = pev, .max_tevs = max_tevs}; + struct perf_probe_point *pp = &pev->point; + Dwarf_Off off, noff; + size_t cuhl; + Dwarf_Die *diep; + Dwarf *dbg; + int ret = 0; + + pf.tevs = zalloc(sizeof(struct kprobe_trace_event) * max_tevs); + if (pf.tevs == NULL) + return -ENOMEM; + *tevs = pf.tevs; + pf.ntevs = 0; + + dbg = dwarf_begin(fd, DWARF_C_READ); + if (!dbg) { + pr_warning("No dwarf info found in the vmlinux - " + "please rebuild with CONFIG_DEBUG_INFO=y.\n"); + free(pf.tevs); + *tevs = NULL; + return -EBADF; + } + +#if _ELFUTILS_PREREQ(0, 142) + /* Get the call frame information from this dwarf */ + pf.cfi = dwarf_getcfi(dbg); +#endif + + off = 0; + line_list__init(&pf.lcache); + /* Loop on CUs (Compilation Unit) */ + while (!dwarf_nextcu(dbg, off, &noff, &cuhl, NULL, NULL, NULL) && + ret >= 0) { + /* Get the DIE(Debugging Information Entry) of this CU */ + diep = dwarf_offdie(dbg, off + cuhl, &pf.cu_die); + if (!diep) + continue; + + /* Check if target file is included. */ + if (pp->file) + pf.fname = cu_find_realpath(&pf.cu_die, pp->file); + else + pf.fname = NULL; + + if (!pp->file || pf.fname) { + if (pp->function) + ret = find_probe_point_by_func(&pf); + else if (pp->lazy_line) + ret = find_probe_point_lazy(NULL, &pf); + else { + pf.lno = pp->line; + ret = find_probe_point_by_line(&pf); } - die("Failed to find real subprogram.\n"); + } + off = noff; + } + line_list__free(&pf.lcache); + dwarf_end(dbg); + + return (ret < 0) ? ret : pf.ntevs; +} + +/* Reverse search */ +int find_perf_probe_point(int fd, unsigned long addr, + struct perf_probe_point *ppt) +{ + Dwarf_Die cudie, spdie, indie; + Dwarf *dbg; + Dwarf_Line *line; + Dwarf_Addr laddr, eaddr; + const char *tmp; + int lineno, ret = 0; + bool found = false; + + dbg = dwarf_begin(fd, DWARF_C_READ); + if (!dbg) + return -EBADF; + + /* Find cu die */ + if (!dwarf_addrdie(dbg, (Dwarf_Addr)addr, &cudie)) { + ret = -EINVAL; + goto end; + } + + /* Find a corresponding line */ + line = dwarf_getsrc_die(&cudie, (Dwarf_Addr)addr); + if (line) { + if (dwarf_lineaddr(line, &laddr) == 0 && + (Dwarf_Addr)addr == laddr && + dwarf_lineno(line, &lineno) == 0) { + tmp = dwarf_linesrc(line, NULL, NULL); + if (tmp) { + ppt->line = lineno; + ppt->file = strdup(tmp); + if (ppt->file == NULL) { + ret = -ENOMEM; + goto end; + } + found = true; + } + } + } + + /* Find a corresponding function */ + if (die_find_real_subprogram(&cudie, (Dwarf_Addr)addr, &spdie)) { + tmp = dwarf_diename(&spdie); + if (!tmp || dwarf_entrypc(&spdie, &eaddr) != 0) + goto end; + + if (ppt->line) { + if (die_find_inlinefunc(&spdie, (Dwarf_Addr)addr, + &indie)) { + /* addr in an inline function */ + tmp = dwarf_diename(&indie); + if (!tmp) + goto end; + ret = dwarf_decl_line(&indie, &lineno); + } else { + if (eaddr == addr) { /* Function entry */ + lineno = ppt->line; + ret = 0; + } else + ret = dwarf_decl_line(&spdie, &lineno); + } + if (ret == 0) { + /* Make a relative line number */ + ppt->line -= lineno; + goto found; + } + } + /* We don't have a line number, let's use offset */ + ppt->offset = addr - (unsigned long)eaddr; found: - /* Get offset from subprogram */ - ret = die_within_subprogram(lk->die, pf->addr, &offs); - DIE_IF(!ret); - show_probepoint(lk->die, offs, pf); - /* Continue to search */ + ppt->function = strdup(tmp); + if (ppt->function == NULL) { + ret = -ENOMEM; + goto end; } + found = true; } - return 0; + +end: + dwarf_end(dbg); + if (ret >= 0) + ret = found ? 1 : 0; + return ret; +} + +/* Add a line and store the src path */ +static int line_range_add_line(const char *src, unsigned int lineno, + struct line_range *lr) +{ + /* Copy real path */ + if (!lr->path) { + lr->path = strdup(src); + if (lr->path == NULL) + return -ENOMEM; + } + return line_list__add_line(&lr->line_list, lineno); } -static void find_by_func(struct probe_finder *pf) +/* Search function declaration lines */ +static int line_range_funcdecl_cb(Dwarf_Die *sp_die, void *data) { - search_die_from_children(pf->cu_die, probefunc_callback, pf); + struct dwarf_callback_param *param = data; + struct line_finder *lf = param->data; + const char *src; + int lineno; + + src = dwarf_decl_file(sp_die); + if (src && strtailcmp(src, lf->fname) != 0) + return DWARF_CB_OK; + + if (dwarf_decl_line(sp_die, &lineno) != 0 || + (lf->lno_s > lineno || lf->lno_e < lineno)) + return DWARF_CB_OK; + + param->retval = line_range_add_line(src, lineno, lf->lr); + if (param->retval < 0) + return DWARF_CB_ABORT; + return DWARF_CB_OK; } -/* Find a probe point */ -int find_probepoint(int fd, struct probe_point *pp) +static int find_line_range_func_decl_lines(struct line_finder *lf) { - Dwarf_Half addr_size = 0; - Dwarf_Unsigned next_cuh = 0; - int cu_number = 0, ret; - struct probe_finder pf = {.pp = pp}; + struct dwarf_callback_param param = {.data = (void *)lf, .retval = 0}; + dwarf_getfuncs(&lf->cu_die, line_range_funcdecl_cb, ¶m, 0); + return param.retval; +} + +/* Find line range from its line number */ +static int find_line_range_by_line(Dwarf_Die *sp_die, struct line_finder *lf) +{ + Dwarf_Lines *lines; + Dwarf_Line *line; + size_t nlines, i; + Dwarf_Addr addr; + int lineno, ret = 0; + const char *src; + Dwarf_Die die_mem; - ret = dwarf_init(fd, DW_DLC_READ, 0, 0, &__dw_debug, &__dw_error); - if (ret != DW_DLV_OK) + line_list__init(&lf->lr->line_list); + if (dwarf_getsrclines(&lf->cu_die, &lines, &nlines) != 0) { + pr_warning("No source lines found in this CU.\n"); return -ENOENT; + } + + /* Search probable lines on lines list */ + for (i = 0; i < nlines; i++) { + line = dwarf_onesrcline(lines, i); + if (dwarf_lineno(line, &lineno) != 0 || + (lf->lno_s > lineno || lf->lno_e < lineno)) + continue; + + if (sp_die) { + /* Address filtering 1: does sp_die include addr? */ + if (dwarf_lineaddr(line, &addr) != 0 || + !dwarf_haspc(sp_die, addr)) + continue; + + /* Address filtering 2: No child include addr? */ + if (die_find_inlinefunc(sp_die, addr, &die_mem)) + continue; + } + + /* TODO: Get fileno from line, but how? */ + src = dwarf_linesrc(line, NULL, NULL); + if (strtailcmp(src, lf->fname) != 0) + continue; + + ret = line_range_add_line(src, lineno, lf->lr); + if (ret < 0) + return ret; + } + + /* + * Dwarf lines doesn't include function declarations. We have to + * check functions list or given function. + */ + if (sp_die) { + src = dwarf_decl_file(sp_die); + if (src && dwarf_decl_line(sp_die, &lineno) == 0 && + (lf->lno_s <= lineno && lf->lno_e >= lineno)) + ret = line_range_add_line(src, lineno, lf->lr); + } else + ret = find_line_range_func_decl_lines(lf); + + /* Update status */ + if (ret >= 0) + if (!list_empty(&lf->lr->line_list)) + ret = lf->found = 1; + else + ret = 0; /* Lines are not found */ + else { + free(lf->lr->path); + lf->lr->path = NULL; + } + return ret; +} - pp->found = 0; - while (++cu_number) { - /* Search CU (Compilation Unit) */ - ret = dwarf_next_cu_header(__dw_debug, NULL, NULL, NULL, - &addr_size, &next_cuh, &__dw_error); - DIE_IF(ret == DW_DLV_ERROR); - if (ret == DW_DLV_NO_ENTRY) +static int line_range_inline_cb(Dwarf_Die *in_die, void *data) +{ + struct dwarf_callback_param *param = data; + + param->retval = find_line_range_by_line(in_die, param->data); + return DWARF_CB_ABORT; /* No need to find other instances */ +} + +/* Search function from function name */ +static int line_range_search_cb(Dwarf_Die *sp_die, void *data) +{ + struct dwarf_callback_param *param = data; + struct line_finder *lf = param->data; + struct line_range *lr = lf->lr; + + if (dwarf_tag(sp_die) == DW_TAG_subprogram && + die_compare_name(sp_die, lr->function) == 0) { + lf->fname = dwarf_decl_file(sp_die); + dwarf_decl_line(sp_die, &lr->offset); + pr_debug("fname: %s, lineno:%d\n", lf->fname, lr->offset); + lf->lno_s = lr->offset + lr->start; + if (lf->lno_s < 0) /* Overflow */ + lf->lno_s = INT_MAX; + lf->lno_e = lr->offset + lr->end; + if (lf->lno_e < 0) /* Overflow */ + lf->lno_e = INT_MAX; + pr_debug("New line range: %d to %d\n", lf->lno_s, lf->lno_e); + lr->start = lf->lno_s; + lr->end = lf->lno_e; + if (dwarf_func_inline(sp_die)) { + struct dwarf_callback_param _param; + _param.data = (void *)lf; + _param.retval = 0; + dwarf_func_inline_instances(sp_die, + line_range_inline_cb, + &_param); + param->retval = _param.retval; + } else + param->retval = find_line_range_by_line(sp_die, lf); + return DWARF_CB_ABORT; + } + return DWARF_CB_OK; +} + +static int find_line_range_by_func(struct line_finder *lf) +{ + struct dwarf_callback_param param = {.data = (void *)lf, .retval = 0}; + dwarf_getfuncs(&lf->cu_die, line_range_search_cb, ¶m, 0); + return param.retval; +} + +int find_line_range(int fd, struct line_range *lr) +{ + struct line_finder lf = {.lr = lr, .found = 0}; + int ret = 0; + Dwarf_Off off = 0, noff; + size_t cuhl; + Dwarf_Die *diep; + Dwarf *dbg; + + dbg = dwarf_begin(fd, DWARF_C_READ); + if (!dbg) { + pr_warning("No dwarf info found in the vmlinux - " + "please rebuild with CONFIG_DEBUG_INFO=y.\n"); + return -EBADF; + } + + /* Loop on CUs (Compilation Unit) */ + while (!lf.found && ret >= 0) { + if (dwarf_nextcu(dbg, off, &noff, &cuhl, NULL, NULL, NULL) != 0) break; /* Get the DIE(Debugging Information Entry) of this CU */ - ret = dwarf_siblingof(__dw_debug, 0, &pf.cu_die, &__dw_error); - DIE_IF(ret != DW_DLV_OK); + diep = dwarf_offdie(dbg, off + cuhl, &lf.cu_die); + if (!diep) + continue; /* Check if target file is included. */ - if (pp->file) - pf.fno = cu_find_fileno(pf.cu_die, pp->file); - - if (!pp->file || pf.fno) { - /* Save CU base address (for frame_base) */ - ret = dwarf_lowpc(pf.cu_die, &pf.cu_base, &__dw_error); - DIE_IF(ret == DW_DLV_ERROR); - if (ret == DW_DLV_NO_ENTRY) - pf.cu_base = 0; - if (pp->function) - find_by_func(&pf); + if (lr->file) + lf.fname = cu_find_realpath(&lf.cu_die, lr->file); + else + lf.fname = 0; + + if (!lr->file || lf.fname) { + if (lr->function) + ret = find_line_range_by_func(&lf); else { - pf.lno = pp->line; - find_by_line(&pf); + lf.lno_s = lr->start; + lf.lno_e = lr->end; + ret = find_line_range_by_line(NULL, &lf); } } - dwarf_dealloc(__dw_debug, pf.cu_die, DW_DLA_DIE); + off = noff; } - ret = dwarf_finish(__dw_debug, &__dw_error); - DIE_IF(ret != DW_DLV_OK); + pr_debug("path: %lx\n", (unsigned long)lr->path); + dwarf_end(dbg); - return pp->found; + return (ret < 0) ? ret : lf.found; } diff --git a/tools/perf/util/probe-finder.h b/tools/perf/util/probe-finder.h index a4086aaddb73..e1f61dcd18ff 100644 --- a/tools/perf/util/probe-finder.h +++ b/tools/perf/util/probe-finder.h @@ -1,6 +1,10 @@ #ifndef _PROBE_FINDER_H #define _PROBE_FINDER_H +#include <stdbool.h> +#include "util.h" +#include "probe-event.h" + #define MAX_PATH_LEN 256 #define MAX_PROBE_BUFFER 1024 #define MAX_PROBES 128 @@ -11,55 +15,54 @@ static inline int is_c_varname(const char *name) return isalpha(name[0]) || name[0] == '_'; } -struct probe_point { - char *event; /* Event name */ - char *group; /* Event group */ - - /* Inputs */ - char *file; /* File name */ - int line; /* Line number */ +#ifdef DWARF_SUPPORT +/* Find kprobe_trace_events specified by perf_probe_event from debuginfo */ +extern int find_kprobe_trace_events(int fd, struct perf_probe_event *pev, + struct kprobe_trace_event **tevs, + int max_tevs); - char *function; /* Function name */ - int offset; /* Offset bytes */ +/* Find a perf_probe_point from debuginfo */ +extern int find_perf_probe_point(int fd, unsigned long addr, + struct perf_probe_point *ppt); - int nr_args; /* Number of arguments */ - char **args; /* Arguments */ - - int retprobe; /* Return probe */ - - /* Output */ - int found; /* Number of found probe points */ - char *probes[MAX_PROBES]; /* Output buffers (will be allocated)*/ -}; - -#ifndef NO_LIBDWARF -extern int find_probepoint(int fd, struct probe_point *pp); - -/* Workaround for undefined _MIPS_SZLONG bug in libdwarf.h: */ -#ifndef _MIPS_SZLONG -# define _MIPS_SZLONG 0 -#endif +extern int find_line_range(int fd, struct line_range *lr); #include <dwarf.h> -#include <libdwarf.h> +#include <libdw.h> +#include <version.h> struct probe_finder { - struct probe_point *pp; /* Target probe point */ + struct perf_probe_event *pev; /* Target probe event */ + struct kprobe_trace_event *tevs; /* Result trace events */ + int ntevs; /* Number of trace events */ + int max_tevs; /* Max number of trace events */ /* For function searching */ - Dwarf_Addr addr; /* Address */ - Dwarf_Unsigned fno; /* File number */ - Dwarf_Unsigned lno; /* Line number */ - Dwarf_Off inl_offs; /* Inline offset */ - Dwarf_Die cu_die; /* Current CU */ + int lno; /* Line number */ + Dwarf_Addr addr; /* Address */ + const char *fname; /* Real file name */ + Dwarf_Die cu_die; /* Current CU */ + struct list_head lcache; /* Line cache for lazy match */ /* For variable searching */ - Dwarf_Addr cu_base; /* Current CU base address */ - Dwarf_Locdesc fbloc; /* Location of Current Frame Base */ - const char *var; /* Current variable name */ - char *buf; /* Current output buffer */ - int len; /* Length of output buffer */ +#if _ELFUTILS_PREREQ(0, 142) + Dwarf_CFI *cfi; /* Call Frame Information */ +#endif + Dwarf_Op *fb_ops; /* Frame base attribute */ + struct perf_probe_arg *pvar; /* Current target variable */ + struct kprobe_trace_arg *tvar; /* Current result variable */ +}; + +struct line_finder { + struct line_range *lr; /* Target line range */ + + const char *fname; /* File name */ + int lno_s; /* Start line number */ + int lno_e; /* End line number */ + Dwarf_Die cu_die; /* Current CU */ + int found; }; -#endif /* NO_LIBDWARF */ + +#endif /* DWARF_SUPPORT */ #endif /*_PROBE_FINDER_H */ diff --git a/tools/perf/util/pstack.c b/tools/perf/util/pstack.c new file mode 100644 index 000000000000..13d36faf64eb --- /dev/null +++ b/tools/perf/util/pstack.c @@ -0,0 +1,75 @@ +/* + * Simple pointer stack + * + * (c) 2010 Arnaldo Carvalho de Melo <acme@redhat.com> + */ + +#include "util.h" +#include "pstack.h" +#include <linux/kernel.h> +#include <stdlib.h> + +struct pstack { + unsigned short top; + unsigned short max_nr_entries; + void *entries[0]; +}; + +struct pstack *pstack__new(unsigned short max_nr_entries) +{ + struct pstack *self = zalloc((sizeof(*self) + + max_nr_entries * sizeof(void *))); + if (self != NULL) + self->max_nr_entries = max_nr_entries; + return self; +} + +void pstack__delete(struct pstack *self) +{ + free(self); +} + +bool pstack__empty(const struct pstack *self) +{ + return self->top == 0; +} + +void pstack__remove(struct pstack *self, void *key) +{ + unsigned short i = self->top, last_index = self->top - 1; + + while (i-- != 0) { + if (self->entries[i] == key) { + if (i < last_index) + memmove(self->entries + i, + self->entries + i + 1, + (last_index - i) * sizeof(void *)); + --self->top; + return; + } + } + pr_err("%s: %p not on the pstack!\n", __func__, key); +} + +void pstack__push(struct pstack *self, void *key) +{ + if (self->top == self->max_nr_entries) { + pr_err("%s: top=%d, overflow!\n", __func__, self->top); + return; + } + self->entries[self->top++] = key; +} + +void *pstack__pop(struct pstack *self) +{ + void *ret; + + if (self->top == 0) { + pr_err("%s: underflow!\n", __func__); + return NULL; + } + + ret = self->entries[--self->top]; + self->entries[self->top] = NULL; + return ret; +} diff --git a/tools/perf/util/pstack.h b/tools/perf/util/pstack.h new file mode 100644 index 000000000000..5ad07023504b --- /dev/null +++ b/tools/perf/util/pstack.h @@ -0,0 +1,12 @@ +#ifndef _PERF_PSTACK_ +#define _PERF_PSTACK_ + +struct pstack; +struct pstack *pstack__new(unsigned short max_nr_entries); +void pstack__delete(struct pstack *self); +bool pstack__empty(const struct pstack *self); +void pstack__remove(struct pstack *self, void *key); +void pstack__push(struct pstack *self, void *key); +void *pstack__pop(struct pstack *self); + +#endif /* _PERF_PSTACK_ */ diff --git a/tools/perf/util/quote.c b/tools/perf/util/quote.c index 2726fe40eb5d..01f03242b86a 100644 --- a/tools/perf/util/quote.c +++ b/tools/perf/util/quote.c @@ -1,8 +1,6 @@ #include "cache.h" #include "quote.h" -int quote_path_fully = 1; - /* Help to copy the thing properly quoted for the shell safety. * any single quote is replaced with '\'', any exclamation point * is replaced with '\!', and the whole thing is enclosed in a @@ -19,7 +17,7 @@ static inline int need_bs_quote(char c) return (c == '\'' || c == '!'); } -void sq_quote_buf(struct strbuf *dst, const char *src) +static void sq_quote_buf(struct strbuf *dst, const char *src) { char *to_free = NULL; @@ -41,23 +39,6 @@ void sq_quote_buf(struct strbuf *dst, const char *src) free(to_free); } -void sq_quote_print(FILE *stream, const char *src) -{ - char c; - - fputc('\'', stream); - while ((c = *src++)) { - if (need_bs_quote(c)) { - fputs("'\\", stream); - fputc(c, stream); - fputc('\'', stream); - } else { - fputc(c, stream); - } - } - fputc('\'', stream); -} - void sq_quote_argv(struct strbuf *dst, const char** argv, size_t maxlen) { int i; @@ -71,415 +52,3 @@ void sq_quote_argv(struct strbuf *dst, const char** argv, size_t maxlen) die("Too many or long arguments"); } } - -char *sq_dequote_step(char *arg, char **next) -{ - char *dst = arg; - char *src = arg; - char c; - - if (*src != '\'') - return NULL; - for (;;) { - c = *++src; - if (!c) - return NULL; - if (c != '\'') { - *dst++ = c; - continue; - } - /* We stepped out of sq */ - switch (*++src) { - case '\0': - *dst = 0; - if (next) - *next = NULL; - return arg; - case '\\': - c = *++src; - if (need_bs_quote(c) && *++src == '\'') { - *dst++ = c; - continue; - } - /* Fallthrough */ - default: - if (!next || !isspace(*src)) - return NULL; - do { - c = *++src; - } while (isspace(c)); - *dst = 0; - *next = src; - return arg; - } - } -} - -char *sq_dequote(char *arg) -{ - return sq_dequote_step(arg, NULL); -} - -int sq_dequote_to_argv(char *arg, const char ***argv, int *nr, int *alloc) -{ - char *next = arg; - - if (!*arg) - return 0; - do { - char *dequoted = sq_dequote_step(next, &next); - if (!dequoted) - return -1; - ALLOC_GROW(*argv, *nr + 1, *alloc); - (*argv)[(*nr)++] = dequoted; - } while (next); - - return 0; -} - -/* 1 means: quote as octal - * 0 means: quote as octal if (quote_path_fully) - * -1 means: never quote - * c: quote as "\\c" - */ -#define X8(x) x, x, x, x, x, x, x, x -#define X16(x) X8(x), X8(x) -static signed char const sq_lookup[256] = { - /* 0 1 2 3 4 5 6 7 */ - /* 0x00 */ 1, 1, 1, 1, 1, 1, 1, 'a', - /* 0x08 */ 'b', 't', 'n', 'v', 'f', 'r', 1, 1, - /* 0x10 */ X16(1), - /* 0x20 */ -1, -1, '"', -1, -1, -1, -1, -1, - /* 0x28 */ X16(-1), X16(-1), X16(-1), - /* 0x58 */ -1, -1, -1, -1,'\\', -1, -1, -1, - /* 0x60 */ X16(-1), X8(-1), - /* 0x78 */ -1, -1, -1, -1, -1, -1, -1, 1, - /* 0x80 */ /* set to 0 */ -}; - -static inline int sq_must_quote(char c) -{ - return sq_lookup[(unsigned char)c] + quote_path_fully > 0; -} - -/* - * Returns the longest prefix not needing a quote up to maxlen if - * positive. - * This stops at the first \0 because it's marked as a character - * needing an escape. - */ -static ssize_t next_quote_pos(const char *s, ssize_t maxlen) -{ - ssize_t len; - - if (maxlen < 0) { - for (len = 0; !sq_must_quote(s[len]); len++); - } else { - for (len = 0; len < maxlen && !sq_must_quote(s[len]); len++); - } - return len; -} - -/* - * C-style name quoting. - * - * (1) if sb and fp are both NULL, inspect the input name and counts the - * number of bytes that are needed to hold c_style quoted version of name, - * counting the double quotes around it but not terminating NUL, and - * returns it. - * However, if name does not need c_style quoting, it returns 0. - * - * (2) if sb or fp are not NULL, it emits the c_style quoted version - * of name, enclosed with double quotes if asked and needed only. - * Return value is the same as in (1). - */ -static size_t quote_c_style_counted(const char *name, ssize_t maxlen, - struct strbuf *sb, FILE *fp, int no_dq) -{ -#define EMIT(c) \ - do { \ - if (sb) strbuf_addch(sb, (c)); \ - if (fp) fputc((c), fp); \ - count++; \ - } while (0) - -#define EMITBUF(s, l) \ - do { \ - int __ret; \ - if (sb) strbuf_add(sb, (s), (l)); \ - if (fp) __ret = fwrite((s), (l), 1, fp); \ - count += (l); \ - } while (0) - - ssize_t len, count = 0; - const char *p = name; - - for (;;) { - int ch; - - len = next_quote_pos(p, maxlen); - if (len == maxlen || !p[len]) - break; - - if (!no_dq && p == name) - EMIT('"'); - - EMITBUF(p, len); - EMIT('\\'); - p += len; - ch = (unsigned char)*p++; - if (sq_lookup[ch] >= ' ') { - EMIT(sq_lookup[ch]); - } else { - EMIT(((ch >> 6) & 03) + '0'); - EMIT(((ch >> 3) & 07) + '0'); - EMIT(((ch >> 0) & 07) + '0'); - } - } - - EMITBUF(p, len); - if (p == name) /* no ending quote needed */ - return 0; - - if (!no_dq) - EMIT('"'); - return count; -} - -size_t quote_c_style(const char *name, struct strbuf *sb, FILE *fp, int nodq) -{ - return quote_c_style_counted(name, -1, sb, fp, nodq); -} - -void quote_two_c_style(struct strbuf *sb, const char *prefix, const char *path, int nodq) -{ - if (quote_c_style(prefix, NULL, NULL, 0) || - quote_c_style(path, NULL, NULL, 0)) { - if (!nodq) - strbuf_addch(sb, '"'); - quote_c_style(prefix, sb, NULL, 1); - quote_c_style(path, sb, NULL, 1); - if (!nodq) - strbuf_addch(sb, '"'); - } else { - strbuf_addstr(sb, prefix); - strbuf_addstr(sb, path); - } -} - -void write_name_quoted(const char *name, FILE *fp, int terminator) -{ - if (terminator) { - quote_c_style(name, NULL, fp, 0); - } else { - fputs(name, fp); - } - fputc(terminator, fp); -} - -void write_name_quotedpfx(const char *pfx, ssize_t pfxlen, - const char *name, FILE *fp, int terminator) -{ - int needquote = 0; - - if (terminator) { - needquote = next_quote_pos(pfx, pfxlen) < pfxlen - || name[next_quote_pos(name, -1)]; - } - if (needquote) { - fputc('"', fp); - quote_c_style_counted(pfx, pfxlen, NULL, fp, 1); - quote_c_style(name, NULL, fp, 1); - fputc('"', fp); - } else { - int ret; - - ret = fwrite(pfx, pfxlen, 1, fp); - fputs(name, fp); - } - fputc(terminator, fp); -} - -/* quote path as relative to the given prefix */ -char *quote_path_relative(const char *in, int len, - struct strbuf *out, const char *prefix) -{ - int needquote; - - if (len < 0) - len = strlen(in); - - /* "../" prefix itself does not need quoting, but "in" might. */ - needquote = (next_quote_pos(in, len) < len); - strbuf_setlen(out, 0); - strbuf_grow(out, len); - - if (needquote) - strbuf_addch(out, '"'); - if (prefix) { - int off = 0; - while (off < len && prefix[off] && prefix[off] == in[off]) - if (prefix[off] == '/') { - prefix += off + 1; - in += off + 1; - len -= off + 1; - off = 0; - } else - off++; - - for (; *prefix; prefix++) - if (*prefix == '/') - strbuf_addstr(out, "../"); - } - - quote_c_style_counted (in, len, out, NULL, 1); - - if (needquote) - strbuf_addch(out, '"'); - if (!out->len) - strbuf_addstr(out, "./"); - - return out->buf; -} - -/* - * C-style name unquoting. - * - * Quoted should point at the opening double quote. - * + Returns 0 if it was able to unquote the string properly, and appends the - * result in the strbuf `sb'. - * + Returns -1 in case of error, and doesn't touch the strbuf. Though note - * that this function will allocate memory in the strbuf, so calling - * strbuf_release is mandatory whichever result unquote_c_style returns. - * - * Updates endp pointer to point at one past the ending double quote if given. - */ -int unquote_c_style(struct strbuf *sb, const char *quoted, const char **endp) -{ - size_t oldlen = sb->len, len; - int ch, ac; - - if (*quoted++ != '"') - return -1; - - for (;;) { - len = strcspn(quoted, "\"\\"); - strbuf_add(sb, quoted, len); - quoted += len; - - switch (*quoted++) { - case '"': - if (endp) - *endp = quoted; - return 0; - case '\\': - break; - default: - goto error; - } - - switch ((ch = *quoted++)) { - case 'a': ch = '\a'; break; - case 'b': ch = '\b'; break; - case 'f': ch = '\f'; break; - case 'n': ch = '\n'; break; - case 'r': ch = '\r'; break; - case 't': ch = '\t'; break; - case 'v': ch = '\v'; break; - - case '\\': case '"': - break; /* verbatim */ - - /* octal values with first digit over 4 overflow */ - case '0': case '1': case '2': case '3': - ac = ((ch - '0') << 6); - if ((ch = *quoted++) < '0' || '7' < ch) - goto error; - ac |= ((ch - '0') << 3); - if ((ch = *quoted++) < '0' || '7' < ch) - goto error; - ac |= (ch - '0'); - ch = ac; - break; - default: - goto error; - } - strbuf_addch(sb, ch); - } - - error: - strbuf_setlen(sb, oldlen); - return -1; -} - -/* quoting as a string literal for other languages */ - -void perl_quote_print(FILE *stream, const char *src) -{ - const char sq = '\''; - const char bq = '\\'; - char c; - - fputc(sq, stream); - while ((c = *src++)) { - if (c == sq || c == bq) - fputc(bq, stream); - fputc(c, stream); - } - fputc(sq, stream); -} - -void python_quote_print(FILE *stream, const char *src) -{ - const char sq = '\''; - const char bq = '\\'; - const char nl = '\n'; - char c; - - fputc(sq, stream); - while ((c = *src++)) { - if (c == nl) { - fputc(bq, stream); - fputc('n', stream); - continue; - } - if (c == sq || c == bq) - fputc(bq, stream); - fputc(c, stream); - } - fputc(sq, stream); -} - -void tcl_quote_print(FILE *stream, const char *src) -{ - char c; - - fputc('"', stream); - while ((c = *src++)) { - switch (c) { - case '[': case ']': - case '{': case '}': - case '$': case '\\': case '"': - fputc('\\', stream); - default: - fputc(c, stream); - break; - case '\f': - fputs("\\f", stream); - break; - case '\r': - fputs("\\r", stream); - break; - case '\n': - fputs("\\n", stream); - break; - case '\t': - fputs("\\t", stream); - break; - case '\v': - fputs("\\v", stream); - break; - } - } - fputc('"', stream); -} diff --git a/tools/perf/util/quote.h b/tools/perf/util/quote.h index b6a019733919..172889ea234f 100644 --- a/tools/perf/util/quote.h +++ b/tools/perf/util/quote.h @@ -22,47 +22,8 @@ * * Note that the above examples leak memory! Remember to free result from * sq_quote() in a real application. - * - * sq_quote_buf() writes to an existing buffer of specified size; it - * will return the number of characters that would have been written - * excluding the final null regardless of the buffer size. */ -extern void sq_quote_print(FILE *stream, const char *src); - -extern void sq_quote_buf(struct strbuf *, const char *src); extern void sq_quote_argv(struct strbuf *, const char **argv, size_t maxlen); -/* This unwraps what sq_quote() produces in place, but returns - * NULL if the input does not look like what sq_quote would have - * produced. - */ -extern char *sq_dequote(char *); - -/* - * Same as the above, but can be used to unwrap many arguments in the - * same string separated by space. "next" is changed to point to the - * next argument that should be passed as first parameter. When there - * is no more argument to be dequoted, "next" is updated to point to NULL. - */ -extern char *sq_dequote_step(char *arg, char **next); -extern int sq_dequote_to_argv(char *arg, const char ***argv, int *nr, int *alloc); - -extern int unquote_c_style(struct strbuf *, const char *quoted, const char **endp); -extern size_t quote_c_style(const char *name, struct strbuf *, FILE *, int no_dq); -extern void quote_two_c_style(struct strbuf *, const char *, const char *, int); - -extern void write_name_quoted(const char *name, FILE *, int terminator); -extern void write_name_quotedpfx(const char *pfx, ssize_t pfxlen, - const char *name, FILE *, int terminator); - -/* quote path as relative to the given prefix */ -char *quote_path_relative(const char *in, int len, - struct strbuf *out, const char *prefix); - -/* quoting as a string literal for other languages */ -extern void perl_quote_print(FILE *stream, const char *src); -extern void python_quote_print(FILE *stream, const char *src); -extern void tcl_quote_print(FILE *stream, const char *src); - #endif /* __PERF_QUOTE_H */ diff --git a/tools/perf/util/run-command.c b/tools/perf/util/run-command.c index 2b615acf94d7..da8e9b285f51 100644 --- a/tools/perf/util/run-command.c +++ b/tools/perf/util/run-command.c @@ -212,93 +212,3 @@ int run_command_v_opt(const char **argv, int opt) prepare_run_command_v_opt(&cmd, argv, opt); return run_command(&cmd); } - -int run_command_v_opt_cd_env(const char **argv, int opt, const char *dir, const char *const *env) -{ - struct child_process cmd; - prepare_run_command_v_opt(&cmd, argv, opt); - cmd.dir = dir; - cmd.env = env; - return run_command(&cmd); -} - -int start_async(struct async *async) -{ - int pipe_out[2]; - - if (pipe(pipe_out) < 0) - return error("cannot create pipe: %s", strerror(errno)); - async->out = pipe_out[0]; - - /* Flush stdio before fork() to avoid cloning buffers */ - fflush(NULL); - - async->pid = fork(); - if (async->pid < 0) { - error("fork (async) failed: %s", strerror(errno)); - close_pair(pipe_out); - return -1; - } - if (!async->pid) { - close(pipe_out[0]); - exit(!!async->proc(pipe_out[1], async->data)); - } - close(pipe_out[1]); - - return 0; -} - -int finish_async(struct async *async) -{ - int ret = 0; - - if (wait_or_whine(async->pid)) - ret = error("waitpid (async) failed"); - - return ret; -} - -int run_hook(const char *index_file, const char *name, ...) -{ - struct child_process hook; - const char **argv = NULL, *env[2]; - char idx[PATH_MAX]; - va_list args; - int ret; - size_t i = 0, alloc = 0; - - if (access(perf_path("hooks/%s", name), X_OK) < 0) - return 0; - - va_start(args, name); - ALLOC_GROW(argv, i + 1, alloc); - argv[i++] = perf_path("hooks/%s", name); - while (argv[i-1]) { - ALLOC_GROW(argv, i + 1, alloc); - argv[i++] = va_arg(args, const char *); - } - va_end(args); - - memset(&hook, 0, sizeof(hook)); - hook.argv = argv; - hook.no_stdin = 1; - hook.stdout_to_stderr = 1; - if (index_file) { - snprintf(idx, sizeof(idx), "PERF_INDEX_FILE=%s", index_file); - env[0] = idx; - env[1] = NULL; - hook.env = env; - } - - ret = start_command(&hook); - free(argv); - if (ret) { - warning("Could not spawn %s", argv[0]); - return ret; - } - ret = finish_command(&hook); - if (ret == -ERR_RUN_COMMAND_WAITPID_SIGNAL) - warning("%s exited due to uncaught signal", argv[0]); - - return ret; -} diff --git a/tools/perf/util/run-command.h b/tools/perf/util/run-command.h index d79028727ce2..1ef264d5069c 100644 --- a/tools/perf/util/run-command.h +++ b/tools/perf/util/run-command.h @@ -50,39 +50,9 @@ int start_command(struct child_process *); int finish_command(struct child_process *); int run_command(struct child_process *); -extern int run_hook(const char *index_file, const char *name, ...); - #define RUN_COMMAND_NO_STDIN 1 #define RUN_PERF_CMD 2 /*If this is to be perf sub-command */ #define RUN_COMMAND_STDOUT_TO_STDERR 4 int run_command_v_opt(const char **argv, int opt); -/* - * env (the environment) is to be formatted like environ: "VAR=VALUE". - * To unset an environment variable use just "VAR". - */ -int run_command_v_opt_cd_env(const char **argv, int opt, const char *dir, const char *const *env); - -/* - * The purpose of the following functions is to feed a pipe by running - * a function asynchronously and providing output that the caller reads. - * - * It is expected that no synchronization and mutual exclusion between - * the caller and the feed function is necessary so that the function - * can run in a thread without interfering with the caller. - */ -struct async { - /* - * proc writes to fd and closes it; - * returns 0 on success, non-zero on failure - */ - int (*proc)(int fd, void *data); - void *data; - int out; /* caller reads from here and closes it */ - pid_t pid; -}; - -int start_async(struct async *async); -int finish_async(struct async *async); - #endif /* __PERF_RUN_COMMAND_H */ diff --git a/tools/perf/util/trace-event-perl.c b/tools/perf/util/scripting-engines/trace-event-perl.c index 6d6d76b8a21e..b059dc50cc2d 100644 --- a/tools/perf/util/trace-event-perl.c +++ b/tools/perf/util/scripting-engines/trace-event-perl.c @@ -25,10 +25,16 @@ #include <ctype.h> #include <errno.h> -#include "../perf.h" -#include "util.h" -#include "trace-event.h" -#include "trace-event-perl.h" +#include "../../perf.h" +#include "../util.h" +#include "../trace-event.h" + +#include <EXTERN.h> +#include <perl.h> + +void boot_Perf__Trace__Context(pTHX_ CV *cv); +void boot_DynaLoader(pTHX_ CV *cv); +typedef PerlInterpreter * INTERP; void xs_init(pTHX); @@ -49,7 +55,7 @@ INTERP my_perl; struct event *events[FTRACE_MAX_EVENT]; -static struct scripting_context *scripting_context; +extern struct scripting_context *scripting_context; static char *cur_field_name; static int zero_flag_atom; @@ -239,33 +245,6 @@ static inline struct event *find_cache_event(int type) return event; } -int common_pc(struct scripting_context *context) -{ - int pc; - - pc = parse_common_pc(context->event_data); - - return pc; -} - -int common_flags(struct scripting_context *context) -{ - int flags; - - flags = parse_common_flags(context->event_data); - - return flags; -} - -int common_lock_depth(struct scripting_context *context) -{ - int lock_depth; - - lock_depth = parse_common_lock_depth(context->event_data); - - return lock_depth; -} - static void perl_process_event(int cpu, void *data, int size __unused, unsigned long long nsecs, char *comm) @@ -392,7 +371,6 @@ static int perl_start_script(const char *script, int argc, const char **argv) run_start_sub(); free(command_line); - fprintf(stderr, "perf trace started with Perl script %s\n\n", script); return 0; error: perl_free(my_perl); @@ -415,8 +393,6 @@ static int perl_stop_script(void) perl_destruct(my_perl); perl_free(my_perl); - fprintf(stderr, "\nperf trace Perl script stopped\n"); - return 0; } @@ -587,75 +563,3 @@ struct scripting_ops perl_scripting_ops = { .process_event = perl_process_event, .generate_script = perl_generate_script, }; - -static void print_unsupported_msg(void) -{ - fprintf(stderr, "Perl scripting not supported." - " Install libperl and rebuild perf to enable it.\n" - "For example:\n # apt-get install libperl-dev (ubuntu)" - "\n # yum install perl-ExtUtils-Embed (Fedora)" - "\n etc.\n"); -} - -static int perl_start_script_unsupported(const char *script __unused, - int argc __unused, - const char **argv __unused) -{ - print_unsupported_msg(); - - return -1; -} - -static int perl_stop_script_unsupported(void) -{ - return 0; -} - -static void perl_process_event_unsupported(int cpu __unused, - void *data __unused, - int size __unused, - unsigned long long nsecs __unused, - char *comm __unused) -{ -} - -static int perl_generate_script_unsupported(const char *outfile __unused) -{ - print_unsupported_msg(); - - return -1; -} - -struct scripting_ops perl_scripting_unsupported_ops = { - .name = "Perl", - .start_script = perl_start_script_unsupported, - .stop_script = perl_stop_script_unsupported, - .process_event = perl_process_event_unsupported, - .generate_script = perl_generate_script_unsupported, -}; - -static void register_perl_scripting(struct scripting_ops *scripting_ops) -{ - int err; - err = script_spec_register("Perl", scripting_ops); - if (err) - die("error registering Perl script extension"); - - err = script_spec_register("pl", scripting_ops); - if (err) - die("error registering pl script extension"); - - scripting_context = malloc(sizeof(struct scripting_context)); -} - -#ifdef NO_LIBPERL -void setup_perl_scripting(void) -{ - register_perl_scripting(&perl_scripting_unsupported_ops); -} -#else -void setup_perl_scripting(void) -{ - register_perl_scripting(&perl_scripting_ops); -} -#endif diff --git a/tools/perf/util/scripting-engines/trace-event-python.c b/tools/perf/util/scripting-engines/trace-event-python.c new file mode 100644 index 000000000000..33a632523743 --- /dev/null +++ b/tools/perf/util/scripting-engines/trace-event-python.c @@ -0,0 +1,594 @@ +/* + * trace-event-python. Feed trace events to an embedded Python interpreter. + * + * Copyright (C) 2010 Tom Zanussi <tzanussi@gmail.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <Python.h> + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <ctype.h> +#include <errno.h> + +#include "../../perf.h" +#include "../util.h" +#include "../trace-event.h" + +PyMODINIT_FUNC initperf_trace_context(void); + +#define FTRACE_MAX_EVENT \ + ((1 << (sizeof(unsigned short) * 8)) - 1) + +struct event *events[FTRACE_MAX_EVENT]; + +#define MAX_FIELDS 64 +#define N_COMMON_FIELDS 7 + +extern struct scripting_context *scripting_context; + +static char *cur_field_name; +static int zero_flag_atom; + +static PyObject *main_module, *main_dict; + +static void handler_call_die(const char *handler_name) +{ + PyErr_Print(); + Py_FatalError("problem in Python trace event handler"); +} + +static void define_value(enum print_arg_type field_type, + const char *ev_name, + const char *field_name, + const char *field_value, + const char *field_str) +{ + const char *handler_name = "define_flag_value"; + PyObject *handler, *t, *retval; + unsigned long long value; + unsigned n = 0; + + if (field_type == PRINT_SYMBOL) + handler_name = "define_symbolic_value"; + + t = PyTuple_New(4); + if (!t) + Py_FatalError("couldn't create Python tuple"); + + value = eval_flag(field_value); + + PyTuple_SetItem(t, n++, PyString_FromString(ev_name)); + PyTuple_SetItem(t, n++, PyString_FromString(field_name)); + PyTuple_SetItem(t, n++, PyInt_FromLong(value)); + PyTuple_SetItem(t, n++, PyString_FromString(field_str)); + + handler = PyDict_GetItemString(main_dict, handler_name); + if (handler && PyCallable_Check(handler)) { + retval = PyObject_CallObject(handler, t); + if (retval == NULL) + handler_call_die(handler_name); + } + + Py_DECREF(t); +} + +static void define_values(enum print_arg_type field_type, + struct print_flag_sym *field, + const char *ev_name, + const char *field_name) +{ + define_value(field_type, ev_name, field_name, field->value, + field->str); + + if (field->next) + define_values(field_type, field->next, ev_name, field_name); +} + +static void define_field(enum print_arg_type field_type, + const char *ev_name, + const char *field_name, + const char *delim) +{ + const char *handler_name = "define_flag_field"; + PyObject *handler, *t, *retval; + unsigned n = 0; + + if (field_type == PRINT_SYMBOL) + handler_name = "define_symbolic_field"; + + if (field_type == PRINT_FLAGS) + t = PyTuple_New(3); + else + t = PyTuple_New(2); + if (!t) + Py_FatalError("couldn't create Python tuple"); + + PyTuple_SetItem(t, n++, PyString_FromString(ev_name)); + PyTuple_SetItem(t, n++, PyString_FromString(field_name)); + if (field_type == PRINT_FLAGS) + PyTuple_SetItem(t, n++, PyString_FromString(delim)); + + handler = PyDict_GetItemString(main_dict, handler_name); + if (handler && PyCallable_Check(handler)) { + retval = PyObject_CallObject(handler, t); + if (retval == NULL) + handler_call_die(handler_name); + } + + Py_DECREF(t); +} + +static void define_event_symbols(struct event *event, + const char *ev_name, + struct print_arg *args) +{ + switch (args->type) { + case PRINT_NULL: + break; + case PRINT_ATOM: + define_value(PRINT_FLAGS, ev_name, cur_field_name, "0", + args->atom.atom); + zero_flag_atom = 0; + break; + case PRINT_FIELD: + if (cur_field_name) + free(cur_field_name); + cur_field_name = strdup(args->field.name); + break; + case PRINT_FLAGS: + define_event_symbols(event, ev_name, args->flags.field); + define_field(PRINT_FLAGS, ev_name, cur_field_name, + args->flags.delim); + define_values(PRINT_FLAGS, args->flags.flags, ev_name, + cur_field_name); + break; + case PRINT_SYMBOL: + define_event_symbols(event, ev_name, args->symbol.field); + define_field(PRINT_SYMBOL, ev_name, cur_field_name, NULL); + define_values(PRINT_SYMBOL, args->symbol.symbols, ev_name, + cur_field_name); + break; + case PRINT_STRING: + break; + case PRINT_TYPE: + define_event_symbols(event, ev_name, args->typecast.item); + break; + case PRINT_OP: + if (strcmp(args->op.op, ":") == 0) + zero_flag_atom = 1; + define_event_symbols(event, ev_name, args->op.left); + define_event_symbols(event, ev_name, args->op.right); + break; + default: + /* we should warn... */ + return; + } + + if (args->next) + define_event_symbols(event, ev_name, args->next); +} + +static inline struct event *find_cache_event(int type) +{ + static char ev_name[256]; + struct event *event; + + if (events[type]) + return events[type]; + + events[type] = event = trace_find_event(type); + if (!event) + return NULL; + + sprintf(ev_name, "%s__%s", event->system, event->name); + + define_event_symbols(event, ev_name, event->print_fmt.args); + + return event; +} + +static void python_process_event(int cpu, void *data, + int size __unused, + unsigned long long nsecs, char *comm) +{ + PyObject *handler, *retval, *context, *t, *obj, *dict = NULL; + static char handler_name[256]; + struct format_field *field; + unsigned long long val; + unsigned long s, ns; + struct event *event; + unsigned n = 0; + int type; + int pid; + + t = PyTuple_New(MAX_FIELDS); + if (!t) + Py_FatalError("couldn't create Python tuple"); + + type = trace_parse_common_type(data); + + event = find_cache_event(type); + if (!event) + die("ug! no event found for type %d", type); + + pid = trace_parse_common_pid(data); + + sprintf(handler_name, "%s__%s", event->system, event->name); + + handler = PyDict_GetItemString(main_dict, handler_name); + if (handler && !PyCallable_Check(handler)) + handler = NULL; + if (!handler) { + dict = PyDict_New(); + if (!dict) + Py_FatalError("couldn't create Python dict"); + } + s = nsecs / NSECS_PER_SEC; + ns = nsecs - s * NSECS_PER_SEC; + + scripting_context->event_data = data; + + context = PyCObject_FromVoidPtr(scripting_context, NULL); + + PyTuple_SetItem(t, n++, PyString_FromString(handler_name)); + PyTuple_SetItem(t, n++, + PyCObject_FromVoidPtr(scripting_context, NULL)); + + if (handler) { + PyTuple_SetItem(t, n++, PyInt_FromLong(cpu)); + PyTuple_SetItem(t, n++, PyInt_FromLong(s)); + PyTuple_SetItem(t, n++, PyInt_FromLong(ns)); + PyTuple_SetItem(t, n++, PyInt_FromLong(pid)); + PyTuple_SetItem(t, n++, PyString_FromString(comm)); + } else { + PyDict_SetItemString(dict, "common_cpu", PyInt_FromLong(cpu)); + PyDict_SetItemString(dict, "common_s", PyInt_FromLong(s)); + PyDict_SetItemString(dict, "common_ns", PyInt_FromLong(ns)); + PyDict_SetItemString(dict, "common_pid", PyInt_FromLong(pid)); + PyDict_SetItemString(dict, "common_comm", PyString_FromString(comm)); + } + for (field = event->format.fields; field; field = field->next) { + if (field->flags & FIELD_IS_STRING) { + int offset; + if (field->flags & FIELD_IS_DYNAMIC) { + offset = *(int *)(data + field->offset); + offset &= 0xffff; + } else + offset = field->offset; + obj = PyString_FromString((char *)data + offset); + } else { /* FIELD_IS_NUMERIC */ + val = read_size(data + field->offset, field->size); + if (field->flags & FIELD_IS_SIGNED) { + if ((long long)val >= LONG_MIN && + (long long)val <= LONG_MAX) + obj = PyInt_FromLong(val); + else + obj = PyLong_FromLongLong(val); + } else { + if (val <= LONG_MAX) + obj = PyInt_FromLong(val); + else + obj = PyLong_FromUnsignedLongLong(val); + } + } + if (handler) + PyTuple_SetItem(t, n++, obj); + else + PyDict_SetItemString(dict, field->name, obj); + + } + if (!handler) + PyTuple_SetItem(t, n++, dict); + + if (_PyTuple_Resize(&t, n) == -1) + Py_FatalError("error resizing Python tuple"); + + if (handler) { + retval = PyObject_CallObject(handler, t); + if (retval == NULL) + handler_call_die(handler_name); + } else { + handler = PyDict_GetItemString(main_dict, "trace_unhandled"); + if (handler && PyCallable_Check(handler)) { + + retval = PyObject_CallObject(handler, t); + if (retval == NULL) + handler_call_die("trace_unhandled"); + } + Py_DECREF(dict); + } + + Py_DECREF(t); +} + +static int run_start_sub(void) +{ + PyObject *handler, *retval; + int err = 0; + + main_module = PyImport_AddModule("__main__"); + if (main_module == NULL) + return -1; + Py_INCREF(main_module); + + main_dict = PyModule_GetDict(main_module); + if (main_dict == NULL) { + err = -1; + goto error; + } + Py_INCREF(main_dict); + + handler = PyDict_GetItemString(main_dict, "trace_begin"); + if (handler == NULL || !PyCallable_Check(handler)) + goto out; + + retval = PyObject_CallObject(handler, NULL); + if (retval == NULL) + handler_call_die("trace_begin"); + + Py_DECREF(retval); + return err; +error: + Py_XDECREF(main_dict); + Py_XDECREF(main_module); +out: + return err; +} + +/* + * Start trace script + */ +static int python_start_script(const char *script, int argc, const char **argv) +{ + const char **command_line; + char buf[PATH_MAX]; + int i, err = 0; + FILE *fp; + + command_line = malloc((argc + 1) * sizeof(const char *)); + command_line[0] = script; + for (i = 1; i < argc + 1; i++) + command_line[i] = argv[i - 1]; + + Py_Initialize(); + + initperf_trace_context(); + + PySys_SetArgv(argc + 1, (char **)command_line); + + fp = fopen(script, "r"); + if (!fp) { + sprintf(buf, "Can't open python script \"%s\"", script); + perror(buf); + err = -1; + goto error; + } + + err = PyRun_SimpleFile(fp, script); + if (err) { + fprintf(stderr, "Error running python script %s\n", script); + goto error; + } + + err = run_start_sub(); + if (err) { + fprintf(stderr, "Error starting python script %s\n", script); + goto error; + } + + free(command_line); + + return err; +error: + Py_Finalize(); + free(command_line); + + return err; +} + +/* + * Stop trace script + */ +static int python_stop_script(void) +{ + PyObject *handler, *retval; + int err = 0; + + handler = PyDict_GetItemString(main_dict, "trace_end"); + if (handler == NULL || !PyCallable_Check(handler)) + goto out; + + retval = PyObject_CallObject(handler, NULL); + if (retval == NULL) + handler_call_die("trace_end"); + else + Py_DECREF(retval); +out: + Py_XDECREF(main_dict); + Py_XDECREF(main_module); + Py_Finalize(); + + return err; +} + +static int python_generate_script(const char *outfile) +{ + struct event *event = NULL; + struct format_field *f; + char fname[PATH_MAX]; + int not_first, count; + FILE *ofp; + + sprintf(fname, "%s.py", outfile); + ofp = fopen(fname, "w"); + if (ofp == NULL) { + fprintf(stderr, "couldn't open %s\n", fname); + return -1; + } + fprintf(ofp, "# perf trace event handlers, " + "generated by perf trace -g python\n"); + + fprintf(ofp, "# Licensed under the terms of the GNU GPL" + " License version 2\n\n"); + + fprintf(ofp, "# The common_* event handler fields are the most useful " + "fields common to\n"); + + fprintf(ofp, "# all events. They don't necessarily correspond to " + "the 'common_*' fields\n"); + + fprintf(ofp, "# in the format files. Those fields not available as " + "handler params can\n"); + + fprintf(ofp, "# be retrieved using Python functions of the form " + "common_*(context).\n"); + + fprintf(ofp, "# See the perf-trace-python Documentation for the list " + "of available functions.\n\n"); + + fprintf(ofp, "import os\n"); + fprintf(ofp, "import sys\n\n"); + + fprintf(ofp, "sys.path.append(os.environ['PERF_EXEC_PATH'] + \\\n"); + fprintf(ofp, "\t'/scripts/python/Perf-Trace-Util/lib/Perf/Trace')\n"); + fprintf(ofp, "\nfrom perf_trace_context import *\n"); + fprintf(ofp, "from Core import *\n\n\n"); + + fprintf(ofp, "def trace_begin():\n"); + fprintf(ofp, "\tprint \"in trace_begin\"\n\n"); + + fprintf(ofp, "def trace_end():\n"); + fprintf(ofp, "\tprint \"in trace_end\"\n\n"); + + while ((event = trace_find_next_event(event))) { + fprintf(ofp, "def %s__%s(", event->system, event->name); + fprintf(ofp, "event_name, "); + fprintf(ofp, "context, "); + fprintf(ofp, "common_cpu,\n"); + fprintf(ofp, "\tcommon_secs, "); + fprintf(ofp, "common_nsecs, "); + fprintf(ofp, "common_pid, "); + fprintf(ofp, "common_comm,\n\t"); + + not_first = 0; + count = 0; + + for (f = event->format.fields; f; f = f->next) { + if (not_first++) + fprintf(ofp, ", "); + if (++count % 5 == 0) + fprintf(ofp, "\n\t"); + + fprintf(ofp, "%s", f->name); + } + fprintf(ofp, "):\n"); + + fprintf(ofp, "\t\tprint_header(event_name, common_cpu, " + "common_secs, common_nsecs,\n\t\t\t" + "common_pid, common_comm)\n\n"); + + fprintf(ofp, "\t\tprint \""); + + not_first = 0; + count = 0; + + for (f = event->format.fields; f; f = f->next) { + if (not_first++) + fprintf(ofp, ", "); + if (count && count % 3 == 0) { + fprintf(ofp, "\" \\\n\t\t\""); + } + count++; + + fprintf(ofp, "%s=", f->name); + if (f->flags & FIELD_IS_STRING || + f->flags & FIELD_IS_FLAG || + f->flags & FIELD_IS_SYMBOLIC) + fprintf(ofp, "%%s"); + else if (f->flags & FIELD_IS_SIGNED) + fprintf(ofp, "%%d"); + else + fprintf(ofp, "%%u"); + } + + fprintf(ofp, "\\n\" %% \\\n\t\t("); + + not_first = 0; + count = 0; + + for (f = event->format.fields; f; f = f->next) { + if (not_first++) + fprintf(ofp, ", "); + + if (++count % 5 == 0) + fprintf(ofp, "\n\t\t"); + + if (f->flags & FIELD_IS_FLAG) { + if ((count - 1) % 5 != 0) { + fprintf(ofp, "\n\t\t"); + count = 4; + } + fprintf(ofp, "flag_str(\""); + fprintf(ofp, "%s__%s\", ", event->system, + event->name); + fprintf(ofp, "\"%s\", %s)", f->name, + f->name); + } else if (f->flags & FIELD_IS_SYMBOLIC) { + if ((count - 1) % 5 != 0) { + fprintf(ofp, "\n\t\t"); + count = 4; + } + fprintf(ofp, "symbol_str(\""); + fprintf(ofp, "%s__%s\", ", event->system, + event->name); + fprintf(ofp, "\"%s\", %s)", f->name, + f->name); + } else + fprintf(ofp, "%s", f->name); + } + + fprintf(ofp, "),\n\n"); + } + + fprintf(ofp, "def trace_unhandled(event_name, context, " + "event_fields_dict):\n"); + + fprintf(ofp, "\t\tprint ' '.join(['%%s=%%s'%%(k,str(v))" + "for k,v in sorted(event_fields_dict.items())])\n\n"); + + fprintf(ofp, "def print_header(" + "event_name, cpu, secs, nsecs, pid, comm):\n" + "\tprint \"%%-20s %%5u %%05u.%%09u %%8u %%-20s \" %% \\\n\t" + "(event_name, cpu, secs, nsecs, pid, comm),\n"); + + fclose(ofp); + + fprintf(stderr, "generated Python script: %s\n", fname); + + return 0; +} + +struct scripting_ops python_scripting_ops = { + .name = "Python", + .start_script = python_start_script, + .stop_script = python_stop_script, + .process_event = python_process_event, + .generate_script = python_generate_script, +}; diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index ce3a6c8abe76..c422cd676313 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -1,7 +1,11 @@ +#define _FILE_OFFSET_BITS 64 + #include <linux/kernel.h> +#include <byteswap.h> #include <unistd.h> #include <sys/types.h> +#include <sys/mman.h> #include "session.h" #include "sort.h" @@ -11,6 +15,16 @@ static int perf_session__open(struct perf_session *self, bool force) { struct stat input_stat; + if (!strcmp(self->filename, "-")) { + self->fd_pipe = true; + self->fd = STDIN_FILENO; + + if (perf_header__read(self, self->fd) < 0) + pr_err("incompatible file format"); + + return 0; + } + self->fd = open(self->filename, O_RDONLY); if (self->fd < 0) { pr_err("failed to open file: %s", self->filename); @@ -35,7 +49,7 @@ static int perf_session__open(struct perf_session *self, bool force) goto out_close; } - if (perf_header__read(&self->header, self->fd) < 0) { + if (perf_header__read(self, self->fd) < 0) { pr_err("incompatible file format"); goto out_close; } @@ -49,7 +63,21 @@ out_close: return -1; } -struct perf_session *perf_session__new(const char *filename, int mode, bool force) +void perf_session__update_sample_type(struct perf_session *self) +{ + self->sample_type = perf_header__sample_type(&self->header); +} + +int perf_session__create_kernel_maps(struct perf_session *self) +{ + int ret = machine__create_kernel_maps(&self->host_machine); + + if (ret >= 0) + ret = machines__create_guest_kernel_maps(&self->machines); + return ret; +} + +struct perf_session *perf_session__new(const char *filename, int mode, bool force, bool repipe) { size_t len = filename ? strlen(filename) + 1 : 0; struct perf_session *self = zalloc(sizeof(*self) + len); @@ -62,17 +90,30 @@ struct perf_session *perf_session__new(const char *filename, int mode, bool forc memcpy(self->filename, filename, len); self->threads = RB_ROOT; + INIT_LIST_HEAD(&self->dead_threads); + self->hists_tree = RB_ROOT; self->last_match = NULL; self->mmap_window = 32; self->cwd = NULL; self->cwdlen = 0; - map_groups__init(&self->kmaps); + self->machines = RB_ROOT; + self->repipe = repipe; + INIT_LIST_HEAD(&self->ordered_samples.samples_head); + machine__init(&self->host_machine, "", HOST_KERNEL_ID); - if (perf_session__create_kernel_maps(self) < 0) - goto out_delete; + if (mode == O_RDONLY) { + if (perf_session__open(self, force) < 0) + goto out_delete; + } else if (mode == O_WRONLY) { + /* + * In O_RDONLY mode this will be performed when reading the + * kernel MMAP event, in event__process_mmap(). + */ + if (perf_session__create_kernel_maps(self) < 0) + goto out_delete; + } - if (mode == O_RDONLY && perf_session__open(self, force) < 0) - goto out_delete; + perf_session__update_sample_type(self); out: return self; out_free: @@ -91,6 +132,16 @@ void perf_session__delete(struct perf_session *self) free(self); } +void perf_session__remove_thread(struct perf_session *self, struct thread *th) +{ + rb_erase(&th->rb_node, &self->threads); + /* + * We may have references to this thread, for instance in some hist_entry + * instances, so just move them to a separate list. + */ + list_add_tail(&th->node, &self->dead_threads); +} + static bool symbol__match_parent_regex(struct symbol *sym) { if (sym->name && !regexec(&parent_regex, sym->name, 0, NULL, 0)) @@ -99,22 +150,17 @@ static bool symbol__match_parent_regex(struct symbol *sym) return 0; } -struct symbol **perf_session__resolve_callchain(struct perf_session *self, - struct thread *thread, - struct ip_callchain *chain, - struct symbol **parent) +struct map_symbol *perf_session__resolve_callchain(struct perf_session *self, + struct thread *thread, + struct ip_callchain *chain, + struct symbol **parent) { u8 cpumode = PERF_RECORD_MISC_USER; - struct symbol **syms = NULL; unsigned int i; + struct map_symbol *syms = calloc(chain->nr, sizeof(*syms)); - if (symbol_conf.use_callchain) { - syms = calloc(chain->nr, sizeof(*syms)); - if (!syms) { - fprintf(stderr, "Can't allocate memory for symbols\n"); - exit(-1); - } - } + if (!syms) + return NULL; for (i = 0; i < chain->nr; i++) { u64 ip = chain->ips[i]; @@ -134,17 +180,736 @@ struct symbol **perf_session__resolve_callchain(struct perf_session *self, continue; } + al.filtered = false; thread__find_addr_location(thread, self, cpumode, - MAP__FUNCTION, ip, &al, NULL); + MAP__FUNCTION, thread->pid, ip, &al, NULL); if (al.sym != NULL) { if (sort__has_parent && !*parent && symbol__match_parent_regex(al.sym)) *parent = al.sym; if (!symbol_conf.use_callchain) break; - syms[i] = al.sym; + syms[i].map = al.map; + syms[i].sym = al.sym; } } return syms; } + +static int process_event_stub(event_t *event __used, + struct perf_session *session __used) +{ + dump_printf(": unhandled!\n"); + return 0; +} + +static int process_finished_round_stub(event_t *event __used, + struct perf_session *session __used, + struct perf_event_ops *ops __used) +{ + dump_printf(": unhandled!\n"); + return 0; +} + +static int process_finished_round(event_t *event, + struct perf_session *session, + struct perf_event_ops *ops); + +static void perf_event_ops__fill_defaults(struct perf_event_ops *handler) +{ + if (handler->sample == NULL) + handler->sample = process_event_stub; + if (handler->mmap == NULL) + handler->mmap = process_event_stub; + if (handler->comm == NULL) + handler->comm = process_event_stub; + if (handler->fork == NULL) + handler->fork = process_event_stub; + if (handler->exit == NULL) + handler->exit = process_event_stub; + if (handler->lost == NULL) + handler->lost = process_event_stub; + if (handler->read == NULL) + handler->read = process_event_stub; + if (handler->throttle == NULL) + handler->throttle = process_event_stub; + if (handler->unthrottle == NULL) + handler->unthrottle = process_event_stub; + if (handler->attr == NULL) + handler->attr = process_event_stub; + if (handler->event_type == NULL) + handler->event_type = process_event_stub; + if (handler->tracing_data == NULL) + handler->tracing_data = process_event_stub; + if (handler->build_id == NULL) + handler->build_id = process_event_stub; + if (handler->finished_round == NULL) { + if (handler->ordered_samples) + handler->finished_round = process_finished_round; + else + handler->finished_round = process_finished_round_stub; + } +} + +void mem_bswap_64(void *src, int byte_size) +{ + u64 *m = src; + + while (byte_size > 0) { + *m = bswap_64(*m); + byte_size -= sizeof(u64); + ++m; + } +} + +static void event__all64_swap(event_t *self) +{ + struct perf_event_header *hdr = &self->header; + mem_bswap_64(hdr + 1, self->header.size - sizeof(*hdr)); +} + +static void event__comm_swap(event_t *self) +{ + self->comm.pid = bswap_32(self->comm.pid); + self->comm.tid = bswap_32(self->comm.tid); +} + +static void event__mmap_swap(event_t *self) +{ + self->mmap.pid = bswap_32(self->mmap.pid); + self->mmap.tid = bswap_32(self->mmap.tid); + self->mmap.start = bswap_64(self->mmap.start); + self->mmap.len = bswap_64(self->mmap.len); + self->mmap.pgoff = bswap_64(self->mmap.pgoff); +} + +static void event__task_swap(event_t *self) +{ + self->fork.pid = bswap_32(self->fork.pid); + self->fork.tid = bswap_32(self->fork.tid); + self->fork.ppid = bswap_32(self->fork.ppid); + self->fork.ptid = bswap_32(self->fork.ptid); + self->fork.time = bswap_64(self->fork.time); +} + +static void event__read_swap(event_t *self) +{ + self->read.pid = bswap_32(self->read.pid); + self->read.tid = bswap_32(self->read.tid); + self->read.value = bswap_64(self->read.value); + self->read.time_enabled = bswap_64(self->read.time_enabled); + self->read.time_running = bswap_64(self->read.time_running); + self->read.id = bswap_64(self->read.id); +} + +static void event__attr_swap(event_t *self) +{ + size_t size; + + self->attr.attr.type = bswap_32(self->attr.attr.type); + self->attr.attr.size = bswap_32(self->attr.attr.size); + self->attr.attr.config = bswap_64(self->attr.attr.config); + self->attr.attr.sample_period = bswap_64(self->attr.attr.sample_period); + self->attr.attr.sample_type = bswap_64(self->attr.attr.sample_type); + self->attr.attr.read_format = bswap_64(self->attr.attr.read_format); + self->attr.attr.wakeup_events = bswap_32(self->attr.attr.wakeup_events); + self->attr.attr.bp_type = bswap_32(self->attr.attr.bp_type); + self->attr.attr.bp_addr = bswap_64(self->attr.attr.bp_addr); + self->attr.attr.bp_len = bswap_64(self->attr.attr.bp_len); + + size = self->header.size; + size -= (void *)&self->attr.id - (void *)self; + mem_bswap_64(self->attr.id, size); +} + +static void event__event_type_swap(event_t *self) +{ + self->event_type.event_type.event_id = + bswap_64(self->event_type.event_type.event_id); +} + +static void event__tracing_data_swap(event_t *self) +{ + self->tracing_data.size = bswap_32(self->tracing_data.size); +} + +typedef void (*event__swap_op)(event_t *self); + +static event__swap_op event__swap_ops[] = { + [PERF_RECORD_MMAP] = event__mmap_swap, + [PERF_RECORD_COMM] = event__comm_swap, + [PERF_RECORD_FORK] = event__task_swap, + [PERF_RECORD_EXIT] = event__task_swap, + [PERF_RECORD_LOST] = event__all64_swap, + [PERF_RECORD_READ] = event__read_swap, + [PERF_RECORD_SAMPLE] = event__all64_swap, + [PERF_RECORD_HEADER_ATTR] = event__attr_swap, + [PERF_RECORD_HEADER_EVENT_TYPE] = event__event_type_swap, + [PERF_RECORD_HEADER_TRACING_DATA] = event__tracing_data_swap, + [PERF_RECORD_HEADER_BUILD_ID] = NULL, + [PERF_RECORD_HEADER_MAX] = NULL, +}; + +struct sample_queue { + u64 timestamp; + struct sample_event *event; + struct list_head list; +}; + +static void flush_sample_queue(struct perf_session *s, + struct perf_event_ops *ops) +{ + struct list_head *head = &s->ordered_samples.samples_head; + u64 limit = s->ordered_samples.next_flush; + struct sample_queue *tmp, *iter; + + if (!ops->ordered_samples || !limit) + return; + + list_for_each_entry_safe(iter, tmp, head, list) { + if (iter->timestamp > limit) + return; + + if (iter == s->ordered_samples.last_inserted) + s->ordered_samples.last_inserted = NULL; + + ops->sample((event_t *)iter->event, s); + + s->ordered_samples.last_flush = iter->timestamp; + list_del(&iter->list); + free(iter->event); + free(iter); + } +} + +/* + * When perf record finishes a pass on every buffers, it records this pseudo + * event. + * We record the max timestamp t found in the pass n. + * Assuming these timestamps are monotonic across cpus, we know that if + * a buffer still has events with timestamps below t, they will be all + * available and then read in the pass n + 1. + * Hence when we start to read the pass n + 2, we can safely flush every + * events with timestamps below t. + * + * ============ PASS n ================= + * CPU 0 | CPU 1 + * | + * cnt1 timestamps | cnt2 timestamps + * 1 | 2 + * 2 | 3 + * - | 4 <--- max recorded + * + * ============ PASS n + 1 ============== + * CPU 0 | CPU 1 + * | + * cnt1 timestamps | cnt2 timestamps + * 3 | 5 + * 4 | 6 + * 5 | 7 <---- max recorded + * + * Flush every events below timestamp 4 + * + * ============ PASS n + 2 ============== + * CPU 0 | CPU 1 + * | + * cnt1 timestamps | cnt2 timestamps + * 6 | 8 + * 7 | 9 + * - | 10 + * + * Flush every events below timestamp 7 + * etc... + */ +static int process_finished_round(event_t *event __used, + struct perf_session *session, + struct perf_event_ops *ops) +{ + flush_sample_queue(session, ops); + session->ordered_samples.next_flush = session->ordered_samples.max_timestamp; + + return 0; +} + +static void __queue_sample_end(struct sample_queue *new, struct list_head *head) +{ + struct sample_queue *iter; + + list_for_each_entry_reverse(iter, head, list) { + if (iter->timestamp < new->timestamp) { + list_add(&new->list, &iter->list); + return; + } + } + + list_add(&new->list, head); +} + +static void __queue_sample_before(struct sample_queue *new, + struct sample_queue *iter, + struct list_head *head) +{ + list_for_each_entry_continue_reverse(iter, head, list) { + if (iter->timestamp < new->timestamp) { + list_add(&new->list, &iter->list); + return; + } + } + + list_add(&new->list, head); +} + +static void __queue_sample_after(struct sample_queue *new, + struct sample_queue *iter, + struct list_head *head) +{ + list_for_each_entry_continue(iter, head, list) { + if (iter->timestamp > new->timestamp) { + list_add_tail(&new->list, &iter->list); + return; + } + } + list_add_tail(&new->list, head); +} + +/* The queue is ordered by time */ +static void __queue_sample_event(struct sample_queue *new, + struct perf_session *s) +{ + struct sample_queue *last_inserted = s->ordered_samples.last_inserted; + struct list_head *head = &s->ordered_samples.samples_head; + + + if (!last_inserted) { + __queue_sample_end(new, head); + return; + } + + /* + * Most of the time the current event has a timestamp + * very close to the last event inserted, unless we just switched + * to another event buffer. Having a sorting based on a list and + * on the last inserted event that is close to the current one is + * probably more efficient than an rbtree based sorting. + */ + if (last_inserted->timestamp >= new->timestamp) + __queue_sample_before(new, last_inserted, head); + else + __queue_sample_after(new, last_inserted, head); +} + +static int queue_sample_event(event_t *event, struct sample_data *data, + struct perf_session *s) +{ + u64 timestamp = data->time; + struct sample_queue *new; + + + if (timestamp < s->ordered_samples.last_flush) { + printf("Warning: Timestamp below last timeslice flush\n"); + return -EINVAL; + } + + new = malloc(sizeof(*new)); + if (!new) + return -ENOMEM; + + new->timestamp = timestamp; + + new->event = malloc(event->header.size); + if (!new->event) { + free(new); + return -ENOMEM; + } + + memcpy(new->event, event, event->header.size); + + __queue_sample_event(new, s); + s->ordered_samples.last_inserted = new; + + if (new->timestamp > s->ordered_samples.max_timestamp) + s->ordered_samples.max_timestamp = new->timestamp; + + return 0; +} + +static int perf_session__process_sample(event_t *event, struct perf_session *s, + struct perf_event_ops *ops) +{ + struct sample_data data; + + if (!ops->ordered_samples) + return ops->sample(event, s); + + bzero(&data, sizeof(struct sample_data)); + event__parse_sample(event, s->sample_type, &data); + + queue_sample_event(event, &data, s); + + return 0; +} + +static int perf_session__process_event(struct perf_session *self, + event_t *event, + struct perf_event_ops *ops, + u64 offset, u64 head) +{ + trace_event(event); + + if (event->header.type < PERF_RECORD_HEADER_MAX) { + dump_printf("%#Lx [%#x]: PERF_RECORD_%s", + offset + head, event->header.size, + event__name[event->header.type]); + hists__inc_nr_events(&self->hists, event->header.type); + } + + if (self->header.needs_swap && event__swap_ops[event->header.type]) + event__swap_ops[event->header.type](event); + + switch (event->header.type) { + case PERF_RECORD_SAMPLE: + return perf_session__process_sample(event, self, ops); + case PERF_RECORD_MMAP: + return ops->mmap(event, self); + case PERF_RECORD_COMM: + return ops->comm(event, self); + case PERF_RECORD_FORK: + return ops->fork(event, self); + case PERF_RECORD_EXIT: + return ops->exit(event, self); + case PERF_RECORD_LOST: + return ops->lost(event, self); + case PERF_RECORD_READ: + return ops->read(event, self); + case PERF_RECORD_THROTTLE: + return ops->throttle(event, self); + case PERF_RECORD_UNTHROTTLE: + return ops->unthrottle(event, self); + case PERF_RECORD_HEADER_ATTR: + return ops->attr(event, self); + case PERF_RECORD_HEADER_EVENT_TYPE: + return ops->event_type(event, self); + case PERF_RECORD_HEADER_TRACING_DATA: + /* setup for reading amidst mmap */ + lseek(self->fd, offset + head, SEEK_SET); + return ops->tracing_data(event, self); + case PERF_RECORD_HEADER_BUILD_ID: + return ops->build_id(event, self); + case PERF_RECORD_FINISHED_ROUND: + return ops->finished_round(event, self, ops); + default: + ++self->hists.stats.nr_unknown_events; + return -1; + } +} + +void perf_event_header__bswap(struct perf_event_header *self) +{ + self->type = bswap_32(self->type); + self->misc = bswap_16(self->misc); + self->size = bswap_16(self->size); +} + +static struct thread *perf_session__register_idle_thread(struct perf_session *self) +{ + struct thread *thread = perf_session__findnew(self, 0); + + if (thread == NULL || thread__set_comm(thread, "swapper")) { + pr_err("problem inserting idle task.\n"); + thread = NULL; + } + + return thread; +} + +int do_read(int fd, void *buf, size_t size) +{ + void *buf_start = buf; + + while (size) { + int ret = read(fd, buf, size); + + if (ret <= 0) + return ret; + + size -= ret; + buf += ret; + } + + return buf - buf_start; +} + +#define session_done() (*(volatile int *)(&session_done)) +volatile int session_done; + +static int __perf_session__process_pipe_events(struct perf_session *self, + struct perf_event_ops *ops) +{ + event_t event; + uint32_t size; + int skip = 0; + u64 head; + int err; + void *p; + + perf_event_ops__fill_defaults(ops); + + head = 0; +more: + err = do_read(self->fd, &event, sizeof(struct perf_event_header)); + if (err <= 0) { + if (err == 0) + goto done; + + pr_err("failed to read event header\n"); + goto out_err; + } + + if (self->header.needs_swap) + perf_event_header__bswap(&event.header); + + size = event.header.size; + if (size == 0) + size = 8; + + p = &event; + p += sizeof(struct perf_event_header); + + if (size - sizeof(struct perf_event_header)) { + err = do_read(self->fd, p, + size - sizeof(struct perf_event_header)); + if (err <= 0) { + if (err == 0) { + pr_err("unexpected end of event stream\n"); + goto done; + } + + pr_err("failed to read event data\n"); + goto out_err; + } + } + + if (size == 0 || + (skip = perf_session__process_event(self, &event, ops, + 0, head)) < 0) { + dump_printf("%#Lx [%#x]: skipping unknown header type: %d\n", + head, event.header.size, event.header.type); + /* + * assume we lost track of the stream, check alignment, and + * increment a single u64 in the hope to catch on again 'soon'. + */ + if (unlikely(head & 7)) + head &= ~7ULL; + + size = 8; + } + + head += size; + + dump_printf("\n%#Lx [%#x]: event: %d\n", + head, event.header.size, event.header.type); + + if (skip > 0) + head += skip; + + if (!session_done()) + goto more; +done: + err = 0; +out_err: + return err; +} + +int __perf_session__process_events(struct perf_session *self, + u64 data_offset, u64 data_size, + u64 file_size, struct perf_event_ops *ops) +{ + int err, mmap_prot, mmap_flags; + u64 head, shift; + u64 offset = 0; + size_t page_size; + event_t *event; + uint32_t size; + char *buf; + struct ui_progress *progress = ui_progress__new("Processing events...", + self->size); + if (progress == NULL) + return -1; + + perf_event_ops__fill_defaults(ops); + + page_size = sysconf(_SC_PAGESIZE); + + head = data_offset; + shift = page_size * (head / page_size); + offset += shift; + head -= shift; + + mmap_prot = PROT_READ; + mmap_flags = MAP_SHARED; + + if (self->header.needs_swap) { + mmap_prot |= PROT_WRITE; + mmap_flags = MAP_PRIVATE; + } +remap: + buf = mmap(NULL, page_size * self->mmap_window, mmap_prot, + mmap_flags, self->fd, offset); + if (buf == MAP_FAILED) { + pr_err("failed to mmap file\n"); + err = -errno; + goto out_err; + } + +more: + event = (event_t *)(buf + head); + ui_progress__update(progress, offset); + + if (self->header.needs_swap) + perf_event_header__bswap(&event->header); + size = event->header.size; + if (size == 0) + size = 8; + + if (head + event->header.size >= page_size * self->mmap_window) { + int munmap_ret; + + shift = page_size * (head / page_size); + + munmap_ret = munmap(buf, page_size * self->mmap_window); + assert(munmap_ret == 0); + + offset += shift; + head -= shift; + goto remap; + } + + size = event->header.size; + + dump_printf("\n%#Lx [%#x]: event: %d\n", + offset + head, event->header.size, event->header.type); + + if (size == 0 || + perf_session__process_event(self, event, ops, offset, head) < 0) { + dump_printf("%#Lx [%#x]: skipping unknown header type: %d\n", + offset + head, event->header.size, + event->header.type); + /* + * assume we lost track of the stream, check alignment, and + * increment a single u64 in the hope to catch on again 'soon'. + */ + if (unlikely(head & 7)) + head &= ~7ULL; + + size = 8; + } + + head += size; + + if (offset + head >= data_offset + data_size) + goto done; + + if (offset + head < file_size) + goto more; +done: + err = 0; + /* do the final flush for ordered samples */ + self->ordered_samples.next_flush = ULLONG_MAX; + flush_sample_queue(self, ops); +out_err: + ui_progress__delete(progress); + return err; +} + +int perf_session__process_events(struct perf_session *self, + struct perf_event_ops *ops) +{ + int err; + + if (perf_session__register_idle_thread(self) == NULL) + return -ENOMEM; + + if (!symbol_conf.full_paths) { + char bf[PATH_MAX]; + + if (getcwd(bf, sizeof(bf)) == NULL) { + err = -errno; +out_getcwd_err: + pr_err("failed to get the current directory\n"); + goto out_err; + } + self->cwd = strdup(bf); + if (self->cwd == NULL) { + err = -ENOMEM; + goto out_getcwd_err; + } + self->cwdlen = strlen(self->cwd); + } + + if (!self->fd_pipe) + err = __perf_session__process_events(self, + self->header.data_offset, + self->header.data_size, + self->size, ops); + else + err = __perf_session__process_pipe_events(self, ops); +out_err: + return err; +} + +bool perf_session__has_traces(struct perf_session *self, const char *msg) +{ + if (!(self->sample_type & PERF_SAMPLE_RAW)) { + pr_err("No trace sample to read. Did you call 'perf %s'?\n", msg); + return false; + } + + return true; +} + +int perf_session__set_kallsyms_ref_reloc_sym(struct map **maps, + const char *symbol_name, + u64 addr) +{ + char *bracket; + enum map_type i; + struct ref_reloc_sym *ref; + + ref = zalloc(sizeof(struct ref_reloc_sym)); + if (ref == NULL) + return -ENOMEM; + + ref->name = strdup(symbol_name); + if (ref->name == NULL) { + free(ref); + return -ENOMEM; + } + + bracket = strchr(ref->name, ']'); + if (bracket) + *bracket = '\0'; + + ref->addr = addr; + + for (i = 0; i < MAP__NR_TYPES; ++i) { + struct kmap *kmap = map__kmap(maps[i]); + kmap->ref_reloc_sym = ref; + } + + return 0; +} + +size_t perf_session__fprintf_dsos(struct perf_session *self, FILE *fp) +{ + return __dsos__fprintf(&self->host_machine.kernel_dsos, fp) + + __dsos__fprintf(&self->host_machine.user_dsos, fp) + + machines__fprintf_dsos(&self->machines, fp); +} + +size_t perf_session__fprintf_dsos_buildid(struct perf_session *self, FILE *fp, + bool with_hits) +{ + size_t ret = machine__fprintf_dsos_buildid(&self->host_machine, fp, with_hits); + return ret + machines__fprintf_dsos_buildid(&self->machines, fp, with_hits); +} diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h index 32eaa1bada06..9fa0fc2a863f 100644 --- a/tools/perf/util/session.h +++ b/tools/perf/util/session.h @@ -1,61 +1,145 @@ #ifndef __PERF_SESSION_H #define __PERF_SESSION_H +#include "hist.h" #include "event.h" #include "header.h" +#include "symbol.h" #include "thread.h" #include <linux/rbtree.h> #include "../../../include/linux/perf_event.h" +struct sample_queue; struct ip_callchain; struct thread; -struct symbol; + +struct ordered_samples { + u64 last_flush; + u64 next_flush; + u64 max_timestamp; + struct list_head samples_head; + struct sample_queue *last_inserted; +}; struct perf_session { struct perf_header header; unsigned long size; unsigned long mmap_window; - struct map_groups kmaps; struct rb_root threads; + struct list_head dead_threads; struct thread *last_match; - struct events_stats events_stats; - unsigned long event_total[PERF_RECORD_MAX]; - struct rb_root hists; + struct machine host_machine; + struct rb_root machines; + struct rb_root hists_tree; + /* + * FIXME: should point to the first entry in hists_tree and + * be a hists instance. Right now its only 'report' + * that is using ->hists_tree while all the rest use + * ->hists. + */ + struct hists hists; u64 sample_type; int fd; + bool fd_pipe; + bool repipe; int cwdlen; char *cwd; + struct ordered_samples ordered_samples; char filename[0]; }; +struct perf_event_ops; + typedef int (*event_op)(event_t *self, struct perf_session *session); +typedef int (*event_op2)(event_t *self, struct perf_session *session, + struct perf_event_ops *ops); struct perf_event_ops { - event_op process_sample_event; - event_op process_mmap_event; - event_op process_comm_event; - event_op process_fork_event; - event_op process_exit_event; - event_op process_lost_event; - event_op process_read_event; - event_op process_throttle_event; - event_op process_unthrottle_event; - int (*sample_type_check)(struct perf_session *session); - unsigned long total_unknown; - bool full_paths; + event_op sample, + mmap, + comm, + fork, + exit, + lost, + read, + throttle, + unthrottle, + attr, + event_type, + tracing_data, + build_id; + event_op2 finished_round; + bool ordered_samples; }; -struct perf_session *perf_session__new(const char *filename, int mode, bool force); +struct perf_session *perf_session__new(const char *filename, int mode, bool force, bool repipe); void perf_session__delete(struct perf_session *self); +void perf_event_header__bswap(struct perf_event_header *self); + +int __perf_session__process_events(struct perf_session *self, + u64 data_offset, u64 data_size, u64 size, + struct perf_event_ops *ops); int perf_session__process_events(struct perf_session *self, struct perf_event_ops *event_ops); -struct symbol **perf_session__resolve_callchain(struct perf_session *self, - struct thread *thread, - struct ip_callchain *chain, - struct symbol **parent); +struct map_symbol *perf_session__resolve_callchain(struct perf_session *self, + struct thread *thread, + struct ip_callchain *chain, + struct symbol **parent); + +bool perf_session__has_traces(struct perf_session *self, const char *msg); + +int perf_session__set_kallsyms_ref_reloc_sym(struct map **maps, + const char *symbol_name, + u64 addr); + +void mem_bswap_64(void *src, int byte_size); + +int perf_session__create_kernel_maps(struct perf_session *self); + +int do_read(int fd, void *buf, size_t size); +void perf_session__update_sample_type(struct perf_session *self); +void perf_session__remove_thread(struct perf_session *self, struct thread *th); + +static inline +struct machine *perf_session__find_host_machine(struct perf_session *self) +{ + return &self->host_machine; +} + +static inline +struct machine *perf_session__find_machine(struct perf_session *self, pid_t pid) +{ + if (pid == HOST_KERNEL_ID) + return &self->host_machine; + return machines__find(&self->machines, pid); +} + +static inline +struct machine *perf_session__findnew_machine(struct perf_session *self, pid_t pid) +{ + if (pid == HOST_KERNEL_ID) + return &self->host_machine; + return machines__findnew(&self->machines, pid); +} + +static inline +void perf_session__process_machines(struct perf_session *self, + machine__process_t process) +{ + process(&self->host_machine, self); + return machines__process(&self->machines, process, self); +} + +size_t perf_session__fprintf_dsos(struct perf_session *self, FILE *fp); -int perf_header__read_build_ids(int input, u64 offset, u64 file_size); +size_t perf_session__fprintf_dsos_buildid(struct perf_session *self, + FILE *fp, bool with_hits); +static inline +size_t perf_session__fprintf_nr_events(struct perf_session *self, FILE *fp) +{ + return hists__fprintf_nr_events(&self->hists, fp); +} #endif /* __PERF_SESSION_H */ diff --git a/tools/perf/util/sigchain.c b/tools/perf/util/sigchain.c index 1118b99e57d3..ba785e9b1841 100644 --- a/tools/perf/util/sigchain.c +++ b/tools/perf/util/sigchain.c @@ -16,7 +16,7 @@ static void check_signum(int sig) die("BUG: signal out of range: %d", sig); } -int sigchain_push(int sig, sigchain_fun f) +static int sigchain_push(int sig, sigchain_fun f) { struct sigchain_signal *s = signals + sig; check_signum(sig); diff --git a/tools/perf/util/sigchain.h b/tools/perf/util/sigchain.h index 1a53c11265fd..959d64eb5557 100644 --- a/tools/perf/util/sigchain.h +++ b/tools/perf/util/sigchain.h @@ -3,7 +3,6 @@ typedef void (*sigchain_fun)(int); -int sigchain_push(int sig, sigchain_fun f); int sigchain_pop(int sig); void sigchain_push_common(sigchain_fun f); diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c index cb0f327de9e8..2316cb5a4116 100644 --- a/tools/perf/util/sort.c +++ b/tools/perf/util/sort.c @@ -1,10 +1,10 @@ #include "sort.h" regex_t parent_regex; -char default_parent_pattern[] = "^sys_|^do_page_fault"; -char *parent_pattern = default_parent_pattern; -char default_sort_order[] = "comm,dso,symbol"; -char *sort_order = default_sort_order; +const char default_parent_pattern[] = "^sys_|^do_page_fault"; +const char *parent_pattern = default_parent_pattern; +const char default_sort_order[] = "comm,dso,symbol"; +const char *sort_order = default_sort_order; int sort__need_collapse = 0; int sort__has_parent = 0; @@ -18,39 +18,50 @@ char * field_sep; LIST_HEAD(hist_entry__sort_list); +static int hist_entry__thread_snprintf(struct hist_entry *self, char *bf, + size_t size, unsigned int width); +static int hist_entry__comm_snprintf(struct hist_entry *self, char *bf, + size_t size, unsigned int width); +static int hist_entry__dso_snprintf(struct hist_entry *self, char *bf, + size_t size, unsigned int width); +static int hist_entry__sym_snprintf(struct hist_entry *self, char *bf, + size_t size, unsigned int width); +static int hist_entry__parent_snprintf(struct hist_entry *self, char *bf, + size_t size, unsigned int width); + struct sort_entry sort_thread = { - .header = "Command: Pid", - .cmp = sort__thread_cmp, - .print = sort__thread_print, - .width = &threads__col_width, + .se_header = "Command: Pid", + .se_cmp = sort__thread_cmp, + .se_snprintf = hist_entry__thread_snprintf, + .se_width = &threads__col_width, }; struct sort_entry sort_comm = { - .header = "Command", - .cmp = sort__comm_cmp, - .collapse = sort__comm_collapse, - .print = sort__comm_print, - .width = &comms__col_width, + .se_header = "Command", + .se_cmp = sort__comm_cmp, + .se_collapse = sort__comm_collapse, + .se_snprintf = hist_entry__comm_snprintf, + .se_width = &comms__col_width, }; struct sort_entry sort_dso = { - .header = "Shared Object", - .cmp = sort__dso_cmp, - .print = sort__dso_print, - .width = &dsos__col_width, + .se_header = "Shared Object", + .se_cmp = sort__dso_cmp, + .se_snprintf = hist_entry__dso_snprintf, + .se_width = &dsos__col_width, }; struct sort_entry sort_sym = { - .header = "Symbol", - .cmp = sort__sym_cmp, - .print = sort__sym_print, + .se_header = "Symbol", + .se_cmp = sort__sym_cmp, + .se_snprintf = hist_entry__sym_snprintf, }; struct sort_entry sort_parent = { - .header = "Parent symbol", - .cmp = sort__parent_cmp, - .print = sort__parent_print, - .width = &parent_symbol__col_width, + .se_header = "Parent symbol", + .se_cmp = sort__parent_cmp, + .se_snprintf = hist_entry__parent_snprintf, + .se_width = &parent_symbol__col_width, }; struct sort_dimension { @@ -85,45 +96,38 @@ sort__thread_cmp(struct hist_entry *left, struct hist_entry *right) return right->thread->pid - left->thread->pid; } -int repsep_fprintf(FILE *fp, const char *fmt, ...) +static int repsep_snprintf(char *bf, size_t size, const char *fmt, ...) { int n; va_list ap; va_start(ap, fmt); - if (!field_sep) - n = vfprintf(fp, fmt, ap); - else { - char *bf = NULL; - n = vasprintf(&bf, fmt, ap); - if (n > 0) { - char *sep = bf; - - while (1) { - sep = strchr(sep, *field_sep); - if (sep == NULL) - break; - *sep = '.'; - } + n = vsnprintf(bf, size, fmt, ap); + if (field_sep && n > 0) { + char *sep = bf; + + while (1) { + sep = strchr(sep, *field_sep); + if (sep == NULL) + break; + *sep = '.'; } - fputs(bf, fp); - free(bf); } va_end(ap); return n; } -size_t -sort__thread_print(FILE *fp, struct hist_entry *self, unsigned int width) +static int hist_entry__thread_snprintf(struct hist_entry *self, char *bf, + size_t size, unsigned int width) { - return repsep_fprintf(fp, "%*s:%5d", width - 6, + return repsep_snprintf(bf, size, "%*s:%5d", width, self->thread->comm ?: "", self->thread->pid); } -size_t -sort__comm_print(FILE *fp, struct hist_entry *self, unsigned int width) +static int hist_entry__comm_snprintf(struct hist_entry *self, char *bf, + size_t size, unsigned int width) { - return repsep_fprintf(fp, "%*s", width, self->thread->comm); + return repsep_snprintf(bf, size, "%*s", width, self->thread->comm); } /* --sort dso */ @@ -131,8 +135,8 @@ sort__comm_print(FILE *fp, struct hist_entry *self, unsigned int width) int64_t sort__dso_cmp(struct hist_entry *left, struct hist_entry *right) { - struct dso *dso_l = left->map ? left->map->dso : NULL; - struct dso *dso_r = right->map ? right->map->dso : NULL; + struct dso *dso_l = left->ms.map ? left->ms.map->dso : NULL; + struct dso *dso_r = right->ms.map ? right->ms.map->dso : NULL; const char *dso_name_l, *dso_name_r; if (!dso_l || !dso_r) @@ -149,16 +153,16 @@ sort__dso_cmp(struct hist_entry *left, struct hist_entry *right) return strcmp(dso_name_l, dso_name_r); } -size_t -sort__dso_print(FILE *fp, struct hist_entry *self, unsigned int width) +static int hist_entry__dso_snprintf(struct hist_entry *self, char *bf, + size_t size, unsigned int width) { - if (self->map && self->map->dso) { - const char *dso_name = !verbose ? self->map->dso->short_name : - self->map->dso->long_name; - return repsep_fprintf(fp, "%-*s", width, dso_name); + if (self->ms.map && self->ms.map->dso) { + const char *dso_name = !verbose ? self->ms.map->dso->short_name : + self->ms.map->dso->long_name; + return repsep_snprintf(bf, size, "%-*s", width, dso_name); } - return repsep_fprintf(fp, "%*llx", width, (u64)self->ip); + return repsep_snprintf(bf, size, "%*Lx", width, self->ip); } /* --sort symbol */ @@ -168,31 +172,31 @@ sort__sym_cmp(struct hist_entry *left, struct hist_entry *right) { u64 ip_l, ip_r; - if (left->sym == right->sym) + if (left->ms.sym == right->ms.sym) return 0; - ip_l = left->sym ? left->sym->start : left->ip; - ip_r = right->sym ? right->sym->start : right->ip; + ip_l = left->ms.sym ? left->ms.sym->start : left->ip; + ip_r = right->ms.sym ? right->ms.sym->start : right->ip; return (int64_t)(ip_r - ip_l); } - -size_t -sort__sym_print(FILE *fp, struct hist_entry *self, unsigned int width __used) +static int hist_entry__sym_snprintf(struct hist_entry *self, char *bf, + size_t size, unsigned int width __used) { size_t ret = 0; if (verbose) { - char o = self->map ? dso__symtab_origin(self->map->dso) : '!'; - ret += repsep_fprintf(fp, "%#018llx %c ", (u64)self->ip, o); + char o = self->ms.map ? dso__symtab_origin(self->ms.map->dso) : '!'; + ret += repsep_snprintf(bf, size, "%#018llx %c ", self->ip, o); } - ret += repsep_fprintf(fp, "[%c] ", self->level); - if (self->sym) - ret += repsep_fprintf(fp, "%s", self->sym->name); + ret += repsep_snprintf(bf + ret, size - ret, "[%c] ", self->level); + if (self->ms.sym) + ret += repsep_snprintf(bf + ret, size - ret, "%s", + self->ms.sym->name); else - ret += repsep_fprintf(fp, "%#016llx", (u64)self->ip); + ret += repsep_snprintf(bf + ret, size - ret, "%#016llx", self->ip); return ret; } @@ -231,10 +235,10 @@ sort__parent_cmp(struct hist_entry *left, struct hist_entry *right) return strcmp(sym_l->name, sym_r->name); } -size_t -sort__parent_print(FILE *fp, struct hist_entry *self, unsigned int width) +static int hist_entry__parent_snprintf(struct hist_entry *self, char *bf, + size_t size, unsigned int width) { - return repsep_fprintf(fp, "%-*s", width, + return repsep_snprintf(bf, size, "%-*s", width, self->parent ? self->parent->name : "[other]"); } @@ -251,7 +255,7 @@ int sort_dimension__add(const char *tok) if (strncasecmp(tok, sd->name, strlen(tok))) continue; - if (sd->entry->collapse) + if (sd->entry->se_collapse) sort__need_collapse = 1; if (sd->entry == &sort_parent) { @@ -260,9 +264,8 @@ int sort_dimension__add(const char *tok) char err[BUFSIZ]; regerror(ret, &parent_regex, err, sizeof(err)); - fprintf(stderr, "Invalid regex: %s\n%s", - parent_pattern, err); - exit(-1); + pr_err("Invalid regex: %s\n%s", parent_pattern, err); + return -EINVAL; } sort__has_parent = 1; } diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h index 753f9ea99fb0..0d61c4082f43 100644 --- a/tools/perf/util/sort.h +++ b/tools/perf/util/sort.h @@ -25,10 +25,10 @@ #include "sort.h" extern regex_t parent_regex; -extern char *sort_order; -extern char default_parent_pattern[]; -extern char *parent_pattern; -extern char default_sort_order[]; +extern const char *sort_order; +extern const char default_parent_pattern[]; +extern const char *parent_pattern; +extern const char default_sort_order[]; extern int sort__need_collapse; extern int sort__has_parent; extern char *field_sep; @@ -43,19 +43,24 @@ extern enum sort_type sort__first_dimension; struct hist_entry { struct rb_node rb_node; - u64 count; + u64 period; + u64 period_sys; + u64 period_us; + u64 period_guest_sys; + u64 period_guest_us; + struct map_symbol ms; struct thread *thread; - struct map *map; - struct symbol *sym; u64 ip; + u32 nr_events; char level; - struct symbol *parent; - struct callchain_node callchain; + u8 filtered; + struct symbol *parent; union { unsigned long position; struct hist_entry *pair; struct rb_root sorted_chain; }; + struct callchain_node callchain[0]; }; enum sort_type { @@ -73,12 +78,13 @@ enum sort_type { struct sort_entry { struct list_head list; - const char *header; + const char *se_header; - int64_t (*cmp)(struct hist_entry *, struct hist_entry *); - int64_t (*collapse)(struct hist_entry *, struct hist_entry *); - size_t (*print)(FILE *fp, struct hist_entry *, unsigned int width); - unsigned int *width; + int64_t (*se_cmp)(struct hist_entry *, struct hist_entry *); + int64_t (*se_collapse)(struct hist_entry *, struct hist_entry *); + int (*se_snprintf)(struct hist_entry *self, char *bf, size_t size, + unsigned int width); + unsigned int *se_width; bool elide; }; @@ -87,7 +93,6 @@ extern struct list_head hist_entry__sort_list; void setup_sorting(const char * const usagestr[], const struct option *opts); -extern int repsep_fprintf(FILE *fp, const char *fmt, ...); extern size_t sort__thread_print(FILE *, struct hist_entry *, unsigned int); extern size_t sort__comm_print(FILE *, struct hist_entry *, unsigned int); extern size_t sort__dso_print(FILE *, struct hist_entry *, unsigned int); diff --git a/tools/perf/util/strbuf.c b/tools/perf/util/strbuf.c index 5249d5a1b0c2..92e068517c1a 100644 --- a/tools/perf/util/strbuf.c +++ b/tools/perf/util/strbuf.c @@ -41,16 +41,6 @@ char *strbuf_detach(struct strbuf *sb, size_t *sz) return res; } -void strbuf_attach(struct strbuf *sb, void *buf, size_t len, size_t alloc) -{ - strbuf_release(sb); - sb->buf = buf; - sb->len = len; - sb->alloc = alloc; - strbuf_grow(sb, 0); - sb->buf[sb->len] = '\0'; -} - void strbuf_grow(struct strbuf *sb, size_t extra) { if (sb->len + extra + 1 <= sb->len) @@ -60,94 +50,7 @@ void strbuf_grow(struct strbuf *sb, size_t extra) ALLOC_GROW(sb->buf, sb->len + extra + 1, sb->alloc); } -void strbuf_trim(struct strbuf *sb) -{ - char *b = sb->buf; - while (sb->len > 0 && isspace((unsigned char)sb->buf[sb->len - 1])) - sb->len--; - while (sb->len > 0 && isspace(*b)) { - b++; - sb->len--; - } - memmove(sb->buf, b, sb->len); - sb->buf[sb->len] = '\0'; -} -void strbuf_rtrim(struct strbuf *sb) -{ - while (sb->len > 0 && isspace((unsigned char)sb->buf[sb->len - 1])) - sb->len--; - sb->buf[sb->len] = '\0'; -} - -void strbuf_ltrim(struct strbuf *sb) -{ - char *b = sb->buf; - while (sb->len > 0 && isspace(*b)) { - b++; - sb->len--; - } - memmove(sb->buf, b, sb->len); - sb->buf[sb->len] = '\0'; -} - -void strbuf_tolower(struct strbuf *sb) -{ - unsigned int i; - - for (i = 0; i < sb->len; i++) - sb->buf[i] = tolower(sb->buf[i]); -} - -struct strbuf **strbuf_split(const struct strbuf *sb, int delim) -{ - int alloc = 2, pos = 0; - char *n, *p; - struct strbuf **ret; - struct strbuf *t; - - ret = calloc(alloc, sizeof(struct strbuf *)); - p = n = sb->buf; - while (n < sb->buf + sb->len) { - int len; - n = memchr(n, delim, sb->len - (n - sb->buf)); - if (pos + 1 >= alloc) { - alloc = alloc * 2; - ret = realloc(ret, sizeof(struct strbuf *) * alloc); - } - if (!n) - n = sb->buf + sb->len - 1; - len = n - p + 1; - t = malloc(sizeof(struct strbuf)); - strbuf_init(t, len); - strbuf_add(t, p, len); - ret[pos] = t; - ret[++pos] = NULL; - p = ++n; - } - return ret; -} - -void strbuf_list_free(struct strbuf **sbs) -{ - struct strbuf **s = sbs; - - while (*s) { - strbuf_release(*s); - free(*s++); - } - free(sbs); -} - -int strbuf_cmp(const struct strbuf *a, const struct strbuf *b) -{ - int len = a->len < b->len ? a->len: b->len; - int cmp = memcmp(a->buf, b->buf, len); - if (cmp) - return cmp; - return a->len < b->len ? -1: a->len != b->len; -} - -void strbuf_splice(struct strbuf *sb, size_t pos, size_t len, +static void strbuf_splice(struct strbuf *sb, size_t pos, size_t len, const void *data, size_t dlen) { if (pos + len < pos) @@ -166,11 +69,6 @@ void strbuf_splice(struct strbuf *sb, size_t pos, size_t len, strbuf_setlen(sb, sb->len + dlen - len); } -void strbuf_insert(struct strbuf *sb, size_t pos, const void *data, size_t len) -{ - strbuf_splice(sb, pos, 0, data, len); -} - void strbuf_remove(struct strbuf *sb, size_t pos, size_t len) { strbuf_splice(sb, pos, len, NULL, 0); @@ -183,13 +81,6 @@ void strbuf_add(struct strbuf *sb, const void *data, size_t len) strbuf_setlen(sb, sb->len + len); } -void strbuf_adddup(struct strbuf *sb, size_t pos, size_t len) -{ - strbuf_grow(sb, len); - memcpy(sb->buf + sb->len, sb->buf + pos, len); - strbuf_setlen(sb, sb->len + len); -} - void strbuf_addf(struct strbuf *sb, const char *fmt, ...) { int len; @@ -214,57 +105,6 @@ void strbuf_addf(struct strbuf *sb, const char *fmt, ...) strbuf_setlen(sb, sb->len + len); } -void strbuf_expand(struct strbuf *sb, const char *format, expand_fn_t fn, - void *context) -{ - for (;;) { - const char *percent; - size_t consumed; - - percent = strchrnul(format, '%'); - strbuf_add(sb, format, percent - format); - if (!*percent) - break; - format = percent + 1; - - consumed = fn(sb, format, context); - if (consumed) - format += consumed; - else - strbuf_addch(sb, '%'); - } -} - -size_t strbuf_expand_dict_cb(struct strbuf *sb, const char *placeholder, - void *context) -{ - struct strbuf_expand_dict_entry *e = context; - size_t len; - - for (; e->placeholder && (len = strlen(e->placeholder)); e++) { - if (!strncmp(placeholder, e->placeholder, len)) { - if (e->value) - strbuf_addstr(sb, e->value); - return len; - } - } - return 0; -} - -size_t strbuf_fread(struct strbuf *sb, size_t size, FILE *f) -{ - size_t res; - size_t oldalloc = sb->alloc; - - strbuf_grow(sb, size); - res = fread(sb->buf + sb->len, 1, size, f); - if (res > 0) - strbuf_setlen(sb, sb->len + res); - else if (oldalloc == 0) - strbuf_release(sb); - return res; -} - ssize_t strbuf_read(struct strbuf *sb, int fd, ssize_t hint) { size_t oldlen = sb->len; @@ -291,70 +131,3 @@ ssize_t strbuf_read(struct strbuf *sb, int fd, ssize_t hint) sb->buf[sb->len] = '\0'; return sb->len - oldlen; } - -#define STRBUF_MAXLINK (2*PATH_MAX) - -int strbuf_readlink(struct strbuf *sb, const char *path, ssize_t hint) -{ - size_t oldalloc = sb->alloc; - - if (hint < 32) - hint = 32; - - while (hint < STRBUF_MAXLINK) { - ssize_t len; - - strbuf_grow(sb, hint); - len = readlink(path, sb->buf, hint); - if (len < 0) { - if (errno != ERANGE) - break; - } else if (len < hint) { - strbuf_setlen(sb, len); - return 0; - } - - /* .. the buffer was too small - try again */ - hint *= 2; - } - if (oldalloc == 0) - strbuf_release(sb); - return -1; -} - -int strbuf_getline(struct strbuf *sb, FILE *fp, int term) -{ - int ch; - - strbuf_grow(sb, 0); - if (feof(fp)) - return EOF; - - strbuf_reset(sb); - while ((ch = fgetc(fp)) != EOF) { - if (ch == term) - break; - strbuf_grow(sb, 1); - sb->buf[sb->len++] = ch; - } - if (ch == EOF && sb->len == 0) - return EOF; - - sb->buf[sb->len] = '\0'; - return 0; -} - -int strbuf_read_file(struct strbuf *sb, const char *path, ssize_t hint) -{ - int fd, len; - - fd = open(path, O_RDONLY); - if (fd < 0) - return -1; - len = strbuf_read(sb, fd, hint); - close(fd); - if (len < 0) - return -1; - - return len; -} diff --git a/tools/perf/util/strbuf.h b/tools/perf/util/strbuf.h index a3d121d6c83e..436ac319f6c7 100644 --- a/tools/perf/util/strbuf.h +++ b/tools/perf/util/strbuf.h @@ -53,12 +53,6 @@ struct strbuf { extern void strbuf_init(struct strbuf *buf, ssize_t hint); extern void strbuf_release(struct strbuf *); extern char *strbuf_detach(struct strbuf *, size_t *); -extern void strbuf_attach(struct strbuf *, void *, size_t, size_t); -static inline void strbuf_swap(struct strbuf *a, struct strbuf *b) { - struct strbuf tmp = *a; - *a = *b; - *b = tmp; -} /*----- strbuf size related -----*/ static inline ssize_t strbuf_avail(const struct strbuf *sb) { @@ -74,17 +68,6 @@ static inline void strbuf_setlen(struct strbuf *sb, size_t len) { sb->len = len; sb->buf[len] = '\0'; } -#define strbuf_reset(sb) strbuf_setlen(sb, 0) - -/*----- content related -----*/ -extern void strbuf_trim(struct strbuf *); -extern void strbuf_rtrim(struct strbuf *); -extern void strbuf_ltrim(struct strbuf *); -extern int strbuf_cmp(const struct strbuf *, const struct strbuf *); -extern void strbuf_tolower(struct strbuf *); - -extern struct strbuf **strbuf_split(const struct strbuf *, int delim); -extern void strbuf_list_free(struct strbuf **); /*----- add data in your buffer -----*/ static inline void strbuf_addch(struct strbuf *sb, int c) { @@ -93,45 +76,17 @@ static inline void strbuf_addch(struct strbuf *sb, int c) { sb->buf[sb->len] = '\0'; } -extern void strbuf_insert(struct strbuf *, size_t pos, const void *, size_t); extern void strbuf_remove(struct strbuf *, size_t pos, size_t len); -/* splice pos..pos+len with given data */ -extern void strbuf_splice(struct strbuf *, size_t pos, size_t len, - const void *, size_t); - extern void strbuf_add(struct strbuf *, const void *, size_t); static inline void strbuf_addstr(struct strbuf *sb, const char *s) { strbuf_add(sb, s, strlen(s)); } -static inline void strbuf_addbuf(struct strbuf *sb, const struct strbuf *sb2) { - strbuf_add(sb, sb2->buf, sb2->len); -} -extern void strbuf_adddup(struct strbuf *sb, size_t pos, size_t len); - -typedef size_t (*expand_fn_t) (struct strbuf *sb, const char *placeholder, void *context); -extern void strbuf_expand(struct strbuf *sb, const char *format, expand_fn_t fn, void *context); -struct strbuf_expand_dict_entry { - const char *placeholder; - const char *value; -}; -extern size_t strbuf_expand_dict_cb(struct strbuf *sb, const char *placeholder, void *context); __attribute__((format(printf,2,3))) extern void strbuf_addf(struct strbuf *sb, const char *fmt, ...); -extern size_t strbuf_fread(struct strbuf *, size_t, FILE *); /* XXX: if read fails, any partial read is undone */ extern ssize_t strbuf_read(struct strbuf *, int fd, ssize_t hint); -extern int strbuf_read_file(struct strbuf *sb, const char *path, ssize_t hint); -extern int strbuf_readlink(struct strbuf *sb, const char *path, ssize_t hint); - -extern int strbuf_getline(struct strbuf *, FILE *, int); - -extern void stripspace(struct strbuf *buf, int skip_comments); -extern int launch_editor(const char *path, struct strbuf *buffer, const char *const *env); - -extern int strbuf_branchname(struct strbuf *sb, const char *name); -extern int strbuf_check_branch_ref(struct strbuf *sb, const char *name); #endif /* __PERF_STRBUF_H */ diff --git a/tools/perf/util/string.c b/tools/perf/util/string.c index 5352d7dccc61..0409fc7c0058 100644 --- a/tools/perf/util/string.c +++ b/tools/perf/util/string.c @@ -1,48 +1,5 @@ -#include "string.h" #include "util.h" - -static int hex(char ch) -{ - if ((ch >= '0') && (ch <= '9')) - return ch - '0'; - if ((ch >= 'a') && (ch <= 'f')) - return ch - 'a' + 10; - if ((ch >= 'A') && (ch <= 'F')) - return ch - 'A' + 10; - return -1; -} - -/* - * While we find nice hex chars, build a long_val. - * Return number of chars processed. - */ -int hex2u64(const char *ptr, u64 *long_val) -{ - const char *p = ptr; - *long_val = 0; - - while (*p) { - const int hex_val = hex(*p); - - if (hex_val < 0) - break; - - *long_val = (*long_val << 4) | hex_val; - p++; - } - - return p - ptr; -} - -char *strxfrchar(char *s, char from, char to) -{ - char *p = s; - - while ((p = strchr(p, from)) != NULL) - *p++ = to; - - return s; -} +#include "string.h" #define K 1024LL /* @@ -227,16 +184,73 @@ fail: return NULL; } -/* Glob expression pattern matching */ -bool strglobmatch(const char *str, const char *pat) +/* Character class matching */ +static bool __match_charclass(const char *pat, char c, const char **npat) +{ + bool complement = false, ret = true; + + if (*pat == '!') { + complement = true; + pat++; + } + if (*pat++ == c) /* First character is special */ + goto end; + + while (*pat && *pat != ']') { /* Matching */ + if (*pat == '-' && *(pat + 1) != ']') { /* Range */ + if (*(pat - 1) <= c && c <= *(pat + 1)) + goto end; + if (*(pat - 1) > *(pat + 1)) + goto error; + pat += 2; + } else if (*pat++ == c) + goto end; + } + if (!*pat) + goto error; + ret = false; + +end: + while (*pat && *pat != ']') /* Searching closing */ + pat++; + if (!*pat) + goto error; + *npat = pat + 1; + return complement ? !ret : ret; + +error: + return false; +} + +/* Glob/lazy pattern matching */ +static bool __match_glob(const char *str, const char *pat, bool ignore_space) { while (*str && *pat && *pat != '*') { - if (*pat == '?') { + if (ignore_space) { + /* Ignore spaces for lazy matching */ + if (isspace(*str)) { + str++; + continue; + } + if (isspace(*pat)) { + pat++; + continue; + } + } + if (*pat == '?') { /* Matches any single character */ str++; pat++; - } else - if (*str++ != *pat++) + continue; + } else if (*pat == '[') /* Character classes/Ranges */ + if (__match_charclass(pat + 1, *str, &pat)) { + str++; + continue; + } else return false; + else if (*pat == '\\') /* Escaped char match as normal char */ + pat++; + if (*str++ != *pat++) + return false; } /* Check wild card */ if (*pat == '*') { @@ -251,3 +265,32 @@ bool strglobmatch(const char *str, const char *pat) return !*str && !*pat; } +/** + * strglobmatch - glob expression pattern matching + * @str: the target string to match + * @pat: the pattern string to match + * + * This returns true if the @str matches @pat. @pat can includes wildcards + * ('*','?') and character classes ([CHARS], complementation and ranges are + * also supported). Also, this supports escape character ('\') to use special + * characters as normal character. + * + * Note: if @pat syntax is broken, this always returns false. + */ +bool strglobmatch(const char *str, const char *pat) +{ + return __match_glob(str, pat, false); +} + +/** + * strlazymatch - matching pattern strings lazily with glob pattern + * @str: the target string to match + * @pat: the pattern string to match + * + * This is similar to strglobmatch, except this ignores spaces in + * the target string. + */ +bool strlazymatch(const char *str, const char *pat) +{ + return __match_glob(str, pat, true); +} diff --git a/tools/perf/util/string.h b/tools/perf/util/string.h deleted file mode 100644 index 02ede58c54b4..000000000000 --- a/tools/perf/util/string.h +++ /dev/null @@ -1,17 +0,0 @@ -#ifndef __PERF_STRING_H_ -#define __PERF_STRING_H_ - -#include <stdbool.h> -#include "types.h" - -int hex2u64(const char *ptr, u64 *val); -char *strxfrchar(char *s, char from, char to); -s64 perf_atoll(const char *str); -char **argv_split(const char *str, int *argcp); -void argv_free(char **argv); -bool strglobmatch(const char *str, const char *pat); - -#define _STR(x) #x -#define STR(x) _STR(x) - -#endif /* __PERF_STRING_H */ diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index ab92763edb03..5b276833e2bf 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -1,14 +1,20 @@ -#include "util.h" -#include "../perf.h" -#include "session.h" -#include "sort.h" -#include "string.h" +#define _GNU_SOURCE +#include <ctype.h> +#include <dirent.h> +#include <errno.h> +#include <libgen.h> +#include <stdlib.h> +#include <stdio.h> +#include <string.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <sys/param.h> +#include <fcntl.h> +#include <unistd.h> +#include "build-id.h" #include "symbol.h" -#include "thread.h" +#include "strlist.h" -#include "debug.h" - -#include <asm/bug.h> #include <libelf.h> #include <gelf.h> #include <elf.h> @@ -19,21 +25,12 @@ #define NT_GNU_BUILD_ID 3 #endif -enum dso_origin { - DSO__ORIG_KERNEL = 0, - DSO__ORIG_JAVA_JIT, - DSO__ORIG_FEDORA, - DSO__ORIG_UBUNTU, - DSO__ORIG_BUILDID, - DSO__ORIG_DSO, - DSO__ORIG_KMODULE, - DSO__ORIG_NOT_FOUND, -}; - static void dsos__add(struct list_head *head, struct dso *dso); static struct map *map__new2(u64 start, struct dso *dso, enum map_type type); static int dso__load_kernel_sym(struct dso *self, struct map *map, - struct perf_session *session, symbol_filter_t filter); + symbol_filter_t filter); +static int dso__load_guest_kernel_sym(struct dso *self, struct map *map, + symbol_filter_t filter); static int vmlinux_path__nr_entries; static char **vmlinux_path; @@ -53,17 +50,12 @@ bool dso__sorted_by_name(const struct dso *self, enum map_type type) return self->sorted_by_name & (1 << type); } -static void dso__set_loaded(struct dso *self, enum map_type type) -{ - self->loaded |= (1 << type); -} - static void dso__set_sorted_by_name(struct dso *self, enum map_type type) { self->sorted_by_name |= (1 << type); } -static bool symbol_type__is_a(char symbol_type, enum map_type map_type) +bool symbol_type__is_a(char symbol_type, enum map_type map_type) { switch (map_type) { case MAP__FUNCTION: @@ -131,25 +123,26 @@ static void map_groups__fixup_end(struct map_groups *self) static struct symbol *symbol__new(u64 start, u64 len, const char *name) { size_t namelen = strlen(name) + 1; - struct symbol *self = zalloc(symbol_conf.priv_size + - sizeof(*self) + namelen); + struct symbol *self = calloc(1, (symbol_conf.priv_size + + sizeof(*self) + namelen)); if (self == NULL) return NULL; if (symbol_conf.priv_size) self = ((void *)self) + symbol_conf.priv_size; - self->start = start; - self->end = len ? start + len - 1 : start; + self->start = start; + self->end = len ? start + len - 1 : start; + self->namelen = namelen - 1; - pr_debug3("%s: %s %#Lx-%#Lx\n", __func__, name, start, self->end); + pr_debug4("%s: %s %#Lx-%#Lx\n", __func__, name, start, self->end); memcpy(self->name, name, namelen); return self; } -static void symbol__delete(struct symbol *self) +void symbol__delete(struct symbol *self) { free(((void *)self) - symbol_conf.priv_size); } @@ -160,7 +153,7 @@ static size_t symbol__fprintf(struct symbol *self, FILE *fp) self->start, self->end, self->name); } -static void dso__set_long_name(struct dso *self, char *name) +void dso__set_long_name(struct dso *self, char *name) { if (name == NULL) return; @@ -168,20 +161,28 @@ static void dso__set_long_name(struct dso *self, char *name) self->long_name_len = strlen(name); } +static void dso__set_short_name(struct dso *self, const char *name) +{ + if (name == NULL) + return; + self->short_name = name; + self->short_name_len = strlen(name); +} + static void dso__set_basename(struct dso *self) { - self->short_name = basename(self->long_name); + dso__set_short_name(self, basename(self->long_name)); } struct dso *dso__new(const char *name) { - struct dso *self = malloc(sizeof(*self) + strlen(name) + 1); + struct dso *self = calloc(1, sizeof(*self) + strlen(name) + 1); if (self != NULL) { int i; strcpy(self->name, name); dso__set_long_name(self, self->name); - self->short_name = self->name; + dso__set_short_name(self, self->name); for (i = 0; i < MAP__NR_TYPES; ++i) self->symbols[i] = self->symbol_names[i] = RB_ROOT; self->slen_calculated = 0; @@ -189,6 +190,8 @@ struct dso *dso__new(const char *name) self->loaded = 0; self->sorted_by_name = 0; self->has_build_id = 0; + self->kernel = DSO_TYPE_USER; + INIT_LIST_HEAD(&self->node); } return self; @@ -344,10 +347,10 @@ void dso__sort_by_name(struct dso *self, enum map_type type) &self->symbols[type]); } -int build_id__sprintf(u8 *self, int len, char *bf) +int build_id__sprintf(const u8 *self, int len, char *bf) { char *bid = bf; - u8 *raw = self; + const u8 *raw = self; int i; for (i = 0; i < len; ++i) { @@ -372,6 +375,10 @@ size_t dso__fprintf(struct dso *self, enum map_type type, FILE *fp) struct rb_node *nd; size_t ret = fprintf(fp, "dso: %s (", self->short_name); + if (self->short_name != self->long_name) + ret += fprintf(fp, "%s, ", self->long_name); + ret += fprintf(fp, "%s, %sloaded, ", map_type__name[type], + self->loaded ? "" : "NOT "); ret += dso__fprintf_buildid(self, fp); ret += fprintf(fp, ")\n"); for (nd = rb_first(&self->symbols[type]); nd; nd = rb_next(nd)) { @@ -382,35 +389,28 @@ size_t dso__fprintf(struct dso *self, enum map_type type, FILE *fp) return ret; } -/* - * Loads the function entries in /proc/kallsyms into kernel_map->dso, - * so that we can in the next step set the symbol ->end address and then - * call kernel_maps__split_kallsyms. - */ -static int dso__load_all_kallsyms(struct dso *self, struct map *map) +int kallsyms__parse(const char *filename, void *arg, + int (*process_symbol)(void *arg, const char *name, + char type, u64 start)) { char *line = NULL; size_t n; - struct rb_root *root = &self->symbols[map->type]; - FILE *file = fopen("/proc/kallsyms", "r"); + int err = 0; + FILE *file = fopen(filename, "r"); if (file == NULL) goto out_failure; while (!feof(file)) { u64 start; - struct symbol *sym; int line_len, len; char symbol_type; char *symbol_name; line_len = getline(&line, &n, file); - if (line_len < 0) + if (line_len < 0 || !line) break; - if (!line) - goto out_failure; - line[--line_len] = '\0'; /* \n */ len = hex2u64(line, &start); @@ -420,43 +420,74 @@ static int dso__load_all_kallsyms(struct dso *self, struct map *map) continue; symbol_type = toupper(line[len]); - if (!symbol_type__is_a(symbol_type, map->type)) - continue; - symbol_name = line + len + 2; - /* - * Will fix up the end later, when we have all symbols sorted. - */ - sym = symbol__new(start, 0, symbol_name); - if (sym == NULL) - goto out_delete_line; - /* - * We will pass the symbols to the filter later, in - * map__split_kallsyms, when we have split the maps per module - */ - symbols__insert(root, sym); + err = process_symbol(arg, symbol_name, symbol_type, start); + if (err) + break; } free(line); fclose(file); + return err; - return 0; - -out_delete_line: - free(line); out_failure: return -1; } +struct process_kallsyms_args { + struct map *map; + struct dso *dso; +}; + +static int map__process_kallsym_symbol(void *arg, const char *name, + char type, u64 start) +{ + struct symbol *sym; + struct process_kallsyms_args *a = arg; + struct rb_root *root = &a->dso->symbols[a->map->type]; + + if (!symbol_type__is_a(type, a->map->type)) + return 0; + + /* + * Will fix up the end later, when we have all symbols sorted. + */ + sym = symbol__new(start, 0, name); + + if (sym == NULL) + return -ENOMEM; + /* + * We will pass the symbols to the filter later, in + * map__split_kallsyms, when we have split the maps per module + */ + symbols__insert(root, sym); + + return 0; +} + +/* + * Loads the function entries in /proc/kallsyms into kernel_map->dso, + * so that we can in the next step set the symbol ->end address and then + * call kernel_maps__split_kallsyms. + */ +static int dso__load_all_kallsyms(struct dso *self, const char *filename, + struct map *map) +{ + struct process_kallsyms_args args = { .map = map, .dso = self, }; + return kallsyms__parse(filename, &args, map__process_kallsym_symbol); +} + /* * Split the symbols into maps, making sure there are no overlaps, i.e. the * kernel range is broken in several maps, named [kernel].N, as we don't have * the original ELF section names vmlinux have. */ static int dso__split_kallsyms(struct dso *self, struct map *map, - struct perf_session *session, symbol_filter_t filter) + symbol_filter_t filter) { + struct map_groups *kmaps = map__kmap(map)->kmaps; + struct machine *machine = kmaps->machine; struct map *curr_map = map; struct symbol *pos; int count = 0; @@ -477,13 +508,35 @@ static int dso__split_kallsyms(struct dso *self, struct map *map, *module++ = '\0'; - if (strcmp(self->name, module)) { - curr_map = map_groups__find_by_name(&session->kmaps, map->type, module); + if (strcmp(curr_map->dso->short_name, module)) { + if (curr_map != map && + self->kernel == DSO_TYPE_GUEST_KERNEL && + machine__is_default_guest(machine)) { + /* + * We assume all symbols of a module are + * continuous in * kallsyms, so curr_map + * points to a module and all its + * symbols are in its kmap. Mark it as + * loaded. + */ + dso__set_loaded(curr_map->dso, + curr_map->type); + } + + curr_map = map_groups__find_by_name(kmaps, + map->type, module); if (curr_map == NULL) { - pr_debug("/proc/{kallsyms,modules} " - "inconsistency!\n"); - return -1; + pr_debug("%s/proc/{kallsyms,modules} " + "inconsistency while looking " + "for \"%s\" module!\n", + machine->root_dir, module); + curr_map = map; + goto discard_symbol; } + + if (curr_map->dso->loaded && + !machine__is_default_guest(machine)) + goto discard_symbol; } /* * So that we look just like we get from .ko files, @@ -495,21 +548,29 @@ static int dso__split_kallsyms(struct dso *self, struct map *map, char dso_name[PATH_MAX]; struct dso *dso; - snprintf(dso_name, sizeof(dso_name), "[kernel].%d", - kernel_range++); + if (self->kernel == DSO_TYPE_GUEST_KERNEL) + snprintf(dso_name, sizeof(dso_name), + "[guest.kernel].%d", + kernel_range++); + else + snprintf(dso_name, sizeof(dso_name), + "[kernel].%d", + kernel_range++); dso = dso__new(dso_name); if (dso == NULL) return -1; + dso->kernel = self->kernel; + curr_map = map__new2(pos->start, dso, map->type); - if (map == NULL) { + if (curr_map == NULL) { dso__delete(dso); return -1; } curr_map->map_ip = curr_map->unmap_ip = identity__map_ip; - map_groups__insert(&session->kmaps, curr_map); + map_groups__insert(kmaps, curr_map); ++kernel_range; } @@ -525,20 +586,28 @@ discard_symbol: rb_erase(&pos->rb_node, root); } } + if (curr_map != map && + self->kernel == DSO_TYPE_GUEST_KERNEL && + machine__is_default_guest(kmaps->machine)) { + dso__set_loaded(curr_map->dso, curr_map->type); + } + return count; } - -static int dso__load_kallsyms(struct dso *self, struct map *map, - struct perf_session *session, symbol_filter_t filter) +int dso__load_kallsyms(struct dso *self, const char *filename, + struct map *map, symbol_filter_t filter) { - if (dso__load_all_kallsyms(self, map) < 0) + if (dso__load_all_kallsyms(self, filename, map) < 0) return -1; symbols__fixup_end(&self->symbols[map->type]); - self->origin = DSO__ORIG_KERNEL; + if (self->kernel == DSO_TYPE_GUEST_KERNEL) + self->origin = DSO__ORIG_GUEST_KERNEL; + else + self->origin = DSO__ORIG_KERNEL; - return dso__split_kallsyms(self, map, session, filter); + return dso__split_kallsyms(self, map, filter); } static int dso__load_perf_map(struct dso *self, struct map *map, @@ -835,8 +904,8 @@ out_close: if (err == 0) return nr; out: - pr_warning("%s: problems reading %s PLT info.\n", - __func__, self->long_name); + pr_debug("%s: problems reading %s PLT info.\n", + __func__, self->long_name); return 0; } @@ -864,13 +933,12 @@ static bool elf_sec__is_a(GElf_Shdr *self, Elf_Data *secstrs, enum map_type type } } -static int dso__load_sym(struct dso *self, struct map *map, - struct perf_session *session, const char *name, int fd, - symbol_filter_t filter, int kernel, int kmodule) +static int dso__load_sym(struct dso *self, struct map *map, const char *name, + int fd, symbol_filter_t filter, int kmodule) { + struct kmap *kmap = self->kernel ? map__kmap(map) : NULL; struct map *curr_map = map; struct dso *curr_dso = self; - size_t dso_name_len = strlen(self->short_name); Elf_Data *symstrs, *secstrs; uint32_t nr_syms; int err = -1; @@ -924,7 +992,7 @@ static int dso__load_sym(struct dso *self, struct map *map, nr_syms = shdr.sh_size / shdr.sh_entsize; memset(&sym, 0, sizeof(sym)); - if (!kernel) { + if (self->kernel == DSO_TYPE_USER) { self->adjust_symbols = (ehdr.e_type == ET_EXEC || elf_section_by_name(elf, &ehdr, &shdr, ".gnu.prelink_undo", @@ -933,11 +1001,15 @@ static int dso__load_sym(struct dso *self, struct map *map, elf_symtab__for_each_symbol(syms, nr_syms, idx, sym) { struct symbol *f; - const char *elf_name; + const char *elf_name = elf_sym__name(&sym, symstrs); char *demangled = NULL; int is_label = elf_sym__is_label(&sym); const char *section_name; + if (kmap && kmap->ref_reloc_sym && kmap->ref_reloc_sym->name && + strcmp(elf_name, kmap->ref_reloc_sym->name) == 0) + kmap->ref_reloc_sym->unrelocated_addr = sym.st_value; + if (!is_label && !elf_sym__is_a(&sym, map->type)) continue; @@ -950,14 +1022,14 @@ static int dso__load_sym(struct dso *self, struct map *map, if (is_label && !elf_sec__is_a(&shdr, secstrs, map->type)) continue; - elf_name = elf_sym__name(&sym, symstrs); section_name = elf_sec__name(&shdr, secstrs); - if (kernel || kmodule) { + if (self->kernel != DSO_TYPE_USER || kmodule) { char dso_name[PATH_MAX]; if (strcmp(section_name, - curr_dso->short_name + dso_name_len) == 0) + (curr_dso->short_name + + self->short_name_len)) == 0) goto new_symbol; if (strcmp(section_name, ".text") == 0) { @@ -969,7 +1041,7 @@ static int dso__load_sym(struct dso *self, struct map *map, snprintf(dso_name, sizeof(dso_name), "%s%s", self->short_name, section_name); - curr_map = map_groups__find_by_name(&session->kmaps, map->type, dso_name); + curr_map = map_groups__find_by_name(kmap->kmaps, map->type, dso_name); if (curr_map == NULL) { u64 start = sym.st_value; @@ -979,17 +1051,19 @@ static int dso__load_sym(struct dso *self, struct map *map, curr_dso = dso__new(dso_name); if (curr_dso == NULL) goto out_elf_end; + curr_dso->kernel = self->kernel; curr_map = map__new2(start, curr_dso, - MAP__FUNCTION); + map->type); if (curr_map == NULL) { dso__delete(curr_dso); goto out_elf_end; } curr_map->map_ip = identity__map_ip; curr_map->unmap_ip = identity__map_ip; - curr_dso->origin = DSO__ORIG_KERNEL; - map_groups__insert(&session->kmaps, curr_map); - dsos__add(&dsos__kernel, curr_dso); + curr_dso->origin = self->origin; + map_groups__insert(kmap->kmaps, curr_map); + dsos__add(&self->node, curr_dso); + dso__set_loaded(curr_dso, map->type); } else curr_dso = curr_map->dso; @@ -997,9 +1071,10 @@ static int dso__load_sym(struct dso *self, struct map *map, } if (curr_dso->adjust_symbols) { - pr_debug2("adjusting symbol: st_value: %Lx sh_addr: " - "%Lx sh_offset: %Lx\n", (u64)sym.st_value, - (u64)shdr.sh_addr, (u64)shdr.sh_offset); + pr_debug4("%s: adjusting symbol: st_value: %#Lx " + "sh_addr: %#Lx sh_offset: %#Lx\n", __func__, + (u64)sym.st_value, (u64)shdr.sh_addr, + (u64)shdr.sh_offset); sym.st_value -= shdr.sh_addr - shdr.sh_offset; } /* @@ -1027,8 +1102,16 @@ new_symbol: /* * For misannotated, zeroed, ASM function sizes. */ - if (nr > 0) + if (nr > 0) { symbols__fixup_end(&self->symbols[map->type]); + if (kmap) { + /* + * We need to fixup this here too because we create new + * maps here, for things like vsyscall sections. + */ + __map_groups__fixup_end(kmap->kmaps, map->type); + } + } err = nr; out_elf_end: elf_end(elf); @@ -1041,28 +1124,28 @@ static bool dso__build_id_equal(const struct dso *self, u8 *build_id) return memcmp(self->build_id, build_id, sizeof(self->build_id)) == 0; } -static bool __dsos__read_build_ids(struct list_head *head) +bool __dsos__read_build_ids(struct list_head *head, bool with_hits) { bool have_build_id = false; struct dso *pos; - list_for_each_entry(pos, head, node) + list_for_each_entry(pos, head, node) { + if (with_hits && !pos->hit) + continue; + if (pos->has_build_id) { + have_build_id = true; + continue; + } if (filename__read_build_id(pos->long_name, pos->build_id, sizeof(pos->build_id)) > 0) { have_build_id = true; pos->has_build_id = true; } + } return have_build_id; } -bool dsos__read_build_ids(void) -{ - bool kbuildids = __dsos__read_build_ids(&dsos__kernel), - ubuildids = __dsos__read_build_ids(&dsos__user); - return kbuildids || ubuildids; -} - /* * Align offset to 4 bytes as needed for note name and descriptor data. */ @@ -1191,11 +1274,14 @@ char dso__symtab_origin(const struct dso *self) static const char origin[] = { [DSO__ORIG_KERNEL] = 'k', [DSO__ORIG_JAVA_JIT] = 'j', + [DSO__ORIG_BUILD_ID_CACHE] = 'B', [DSO__ORIG_FEDORA] = 'f', [DSO__ORIG_UBUNTU] = 'u', [DSO__ORIG_BUILDID] = 'b', [DSO__ORIG_DSO] = 'd', [DSO__ORIG_KMODULE] = 'K', + [DSO__ORIG_GUEST_KERNEL] = 'g', + [DSO__ORIG_GUEST_KMODULE] = 'G', }; if (self == NULL || self->origin == DSO__ORIG_NOT_FOUND) @@ -1203,19 +1289,27 @@ char dso__symtab_origin(const struct dso *self) return origin[self->origin]; } -int dso__load(struct dso *self, struct map *map, struct perf_session *session, - symbol_filter_t filter) +int dso__load(struct dso *self, struct map *map, symbol_filter_t filter) { int size = PATH_MAX; char *name; u8 build_id[BUILD_ID_SIZE]; int ret = -1; int fd; + struct machine *machine; + const char *root_dir; dso__set_loaded(self, map->type); - if (self->kernel) - return dso__load_kernel_sym(self, map, session, filter); + if (self->kernel == DSO_TYPE_KERNEL) + return dso__load_kernel_sym(self, map, filter); + else if (self->kernel == DSO_TYPE_GUEST_KERNEL) + return dso__load_guest_kernel_sym(self, map, filter); + + if (map->groups && map->groups->machine) + machine = map->groups->machine; + else + machine = NULL; name = malloc(size); if (!name) @@ -1230,8 +1324,9 @@ int dso__load(struct dso *self, struct map *map, struct perf_session *session, return ret; } - self->origin = DSO__ORIG_FEDORA - 1; - + self->origin = DSO__ORIG_BUILD_ID_CACHE; + if (dso__build_id_filename(self, name, size) != NULL) + goto open_file; more: do { self->origin++; @@ -1248,7 +1343,6 @@ more: if (filename__read_build_id(self->long_name, build_id, sizeof(build_id))) { char build_id_hex[BUILD_ID_SIZE * 2 + 1]; - build_id__sprintf(build_id, sizeof(build_id), build_id_hex); snprintf(name, size, @@ -1263,6 +1357,13 @@ more: case DSO__ORIG_DSO: snprintf(name, size, "%s", self->long_name); break; + case DSO__ORIG_GUEST_KMODULE: + if (map->groups && map->groups->machine) + root_dir = map->groups->machine->root_dir; + else + root_dir = ""; + snprintf(name, size, "%s%s", root_dir, self->long_name); + break; default: goto out; @@ -1276,11 +1377,11 @@ compare_build_id: if (!dso__build_id_equal(self, build_id)) goto more; } - +open_file: fd = open(name, O_RDONLY); } while (fd < 0); - ret = dso__load_sym(self, map, NULL, name, fd, filter, 0, 0); + ret = dso__load_sym(self, map, name, fd, filter, 0); close(fd); /* @@ -1309,35 +1410,65 @@ struct map *map_groups__find_by_name(struct map_groups *self, for (nd = rb_first(&self->maps[type]); nd; nd = rb_next(nd)) { struct map *map = rb_entry(nd, struct map, rb_node); - if (map->dso && strcmp(map->dso->name, name) == 0) + if (map->dso && strcmp(map->dso->short_name, name) == 0) return map; } return NULL; } -static int perf_session__set_modules_path_dir(struct perf_session *self, char *dirname) +static int dso__kernel_module_get_build_id(struct dso *self, + const char *root_dir) +{ + char filename[PATH_MAX]; + /* + * kernel module short names are of the form "[module]" and + * we need just "module" here. + */ + const char *name = self->short_name + 1; + + snprintf(filename, sizeof(filename), + "%s/sys/module/%.*s/notes/.note.gnu.build-id", + root_dir, (int)strlen(name) - 1, name); + + if (sysfs__read_build_id(filename, self->build_id, + sizeof(self->build_id)) == 0) + self->has_build_id = true; + + return 0; +} + +static int map_groups__set_modules_path_dir(struct map_groups *self, + const char *dir_name) { struct dirent *dent; - DIR *dir = opendir(dirname); + DIR *dir = opendir(dir_name); + int ret = 0; if (!dir) { - pr_debug("%s: cannot open %s dir\n", __func__, dirname); + pr_debug("%s: cannot open %s dir\n", __func__, dir_name); return -1; } while ((dent = readdir(dir)) != NULL) { char path[PATH_MAX]; + struct stat st; + + /*sshfs might return bad dent->d_type, so we have to stat*/ + sprintf(path, "%s/%s", dir_name, dent->d_name); + if (stat(path, &st)) + continue; - if (dent->d_type == DT_DIR) { + if (S_ISDIR(st.st_mode)) { if (!strcmp(dent->d_name, ".") || !strcmp(dent->d_name, "..")) continue; snprintf(path, sizeof(path), "%s/%s", - dirname, dent->d_name); - if (perf_session__set_modules_path_dir(self, path) < 0) - goto failure; + dir_name, dent->d_name); + ret = map_groups__set_modules_path_dir(self, path); + if (ret < 0) + goto out; } else { char *dot = strrchr(dent->d_name, '.'), dso_name[PATH_MAX]; @@ -1350,38 +1481,69 @@ static int perf_session__set_modules_path_dir(struct perf_session *self, char *d (int)(dot - dent->d_name), dent->d_name); strxfrchar(dso_name, '-', '_'); - map = map_groups__find_by_name(&self->kmaps, MAP__FUNCTION, dso_name); + map = map_groups__find_by_name(self, MAP__FUNCTION, dso_name); if (map == NULL) continue; snprintf(path, sizeof(path), "%s/%s", - dirname, dent->d_name); + dir_name, dent->d_name); long_name = strdup(path); - if (long_name == NULL) - goto failure; + if (long_name == NULL) { + ret = -1; + goto out; + } dso__set_long_name(map->dso, long_name); + dso__kernel_module_get_build_id(map->dso, ""); } } - return 0; -failure: +out: closedir(dir); - return -1; + return ret; } -static int perf_session__set_modules_path(struct perf_session *self) +static char *get_kernel_version(const char *root_dir) { - struct utsname uts; + char version[PATH_MAX]; + FILE *file; + char *name, *tmp; + const char *prefix = "Linux version "; + + sprintf(version, "%s/proc/version", root_dir); + file = fopen(version, "r"); + if (!file) + return NULL; + + version[0] = '\0'; + tmp = fgets(version, sizeof(version), file); + fclose(file); + + name = strstr(version, prefix); + if (!name) + return NULL; + name += strlen(prefix); + tmp = strchr(name, ' '); + if (tmp) + *tmp = '\0'; + + return strdup(name); +} + +static int machine__set_modules_path(struct machine *self) +{ + char *version; char modules_path[PATH_MAX]; - if (uname(&uts) < 0) + version = get_kernel_version(self->root_dir); + if (!version) return -1; - snprintf(modules_path, sizeof(modules_path), "/lib/modules/%s/kernel", - uts.release); + snprintf(modules_path, sizeof(modules_path), "%s/lib/modules/%s/kernel", + self->root_dir, version); + free(version); - return perf_session__set_modules_path_dir(self, modules_path); + return map_groups__set_modules_path_dir(&self->kmaps, modules_path); } /* @@ -1391,8 +1553,8 @@ static int perf_session__set_modules_path(struct perf_session *self) */ static struct map *map__new2(u64 start, struct dso *dso, enum map_type type) { - struct map *self = malloc(sizeof(*self)); - + struct map *self = calloc(1, (sizeof(*self) + + (dso->kernel ? sizeof(struct kmap) : 0))); if (self != NULL) { /* * ->end will be filled after we load all the symbols @@ -1403,20 +1565,50 @@ static struct map *map__new2(u64 start, struct dso *dso, enum map_type type) return self; } -static int perf_session__create_module_maps(struct perf_session *self) +struct map *machine__new_module(struct machine *self, u64 start, + const char *filename) +{ + struct map *map; + struct dso *dso = __dsos__findnew(&self->kernel_dsos, filename); + + if (dso == NULL) + return NULL; + + map = map__new2(start, dso, MAP__FUNCTION); + if (map == NULL) + return NULL; + + if (machine__is_host(self)) + dso->origin = DSO__ORIG_KMODULE; + else + dso->origin = DSO__ORIG_GUEST_KMODULE; + map_groups__insert(&self->kmaps, map); + return map; +} + +static int machine__create_modules(struct machine *self) { char *line = NULL; size_t n; - FILE *file = fopen("/proc/modules", "r"); + FILE *file; struct map *map; + const char *modules; + char path[PATH_MAX]; + + if (machine__is_default_guest(self)) + modules = symbol_conf.default_guest_modules; + else { + sprintf(path, "%s/proc/modules", self->root_dir); + modules = path; + } + file = fopen(modules, "r"); if (file == NULL) return -1; while (!feof(file)) { char name[PATH_MAX]; u64 start; - struct dso *dso; char *sep; int line_len; @@ -1442,32 +1634,16 @@ static int perf_session__create_module_maps(struct perf_session *self) *sep = '\0'; snprintf(name, sizeof(name), "[%s]", line); - dso = dso__new(name); - - if (dso == NULL) - goto out_delete_line; - - map = map__new2(start, dso, MAP__FUNCTION); - if (map == NULL) { - dso__delete(dso); + map = machine__new_module(self, start, name); + if (map == NULL) goto out_delete_line; - } - - snprintf(name, sizeof(name), - "/sys/module/%s/notes/.note.gnu.build-id", line); - if (sysfs__read_build_id(name, dso->build_id, - sizeof(dso->build_id)) == 0) - dso->has_build_id = true; - - dso->origin = DSO__ORIG_KMODULE; - map_groups__insert(&self->kmaps, map); - dsos__add(&dsos__kernel, dso); + dso__kernel_module_get_build_id(map->dso, self->root_dir); } free(line); fclose(file); - return perf_session__set_modules_path(self); + return machine__set_modules_path(self); out_delete_line: free(line); @@ -1476,7 +1652,6 @@ out_failure: } static int dso__load_vmlinux(struct dso *self, struct map *map, - struct perf_session *session, const char *vmlinux, symbol_filter_t filter) { int err = -1, fd; @@ -1510,51 +1685,139 @@ static int dso__load_vmlinux(struct dso *self, struct map *map, return -1; dso__set_loaded(self, map->type); - err = dso__load_sym(self, map, session, self->long_name, fd, filter, 1, 0); + err = dso__load_sym(self, map, vmlinux, fd, filter, 0); close(fd); + if (err > 0) + pr_debug("Using %s for symbols\n", vmlinux); + + return err; +} + +int dso__load_vmlinux_path(struct dso *self, struct map *map, + symbol_filter_t filter) +{ + int i, err = 0; + char *filename; + + pr_debug("Looking at the vmlinux_path (%d entries long)\n", + vmlinux_path__nr_entries + 1); + + filename = dso__build_id_filename(self, NULL, 0); + if (filename != NULL) { + err = dso__load_vmlinux(self, map, filename, filter); + if (err > 0) { + dso__set_long_name(self, filename); + goto out; + } + free(filename); + } + + for (i = 0; i < vmlinux_path__nr_entries; ++i) { + err = dso__load_vmlinux(self, map, vmlinux_path[i], filter); + if (err > 0) { + dso__set_long_name(self, strdup(vmlinux_path[i])); + break; + } + } +out: return err; } static int dso__load_kernel_sym(struct dso *self, struct map *map, - struct perf_session *session, symbol_filter_t filter) + symbol_filter_t filter) { int err; - bool is_kallsyms; + const char *kallsyms_filename = NULL; + char *kallsyms_allocated_filename = NULL; + /* + * Step 1: if the user specified a vmlinux filename, use it and only + * it, reporting errors to the user if it cannot be used. + * + * For instance, try to analyse an ARM perf.data file _without_ a + * build-id, or if the user specifies the wrong path to the right + * vmlinux file, obviously we can't fallback to another vmlinux (a + * x86_86 one, on the machine where analysis is being performed, say), + * or worse, /proc/kallsyms. + * + * If the specified file _has_ a build-id and there is a build-id + * section in the perf.data file, we will still do the expected + * validation in dso__load_vmlinux and will bail out if they don't + * match. + */ + if (symbol_conf.vmlinux_name != NULL) { + err = dso__load_vmlinux(self, map, + symbol_conf.vmlinux_name, filter); + if (err > 0) { + dso__set_long_name(self, + strdup(symbol_conf.vmlinux_name)); + goto out_fixup; + } + return err; + } if (vmlinux_path != NULL) { - int i; - pr_debug("Looking at the vmlinux_path (%d entries long)\n", - vmlinux_path__nr_entries); - for (i = 0; i < vmlinux_path__nr_entries; ++i) { - err = dso__load_vmlinux(self, map, session, - vmlinux_path[i], filter); - if (err > 0) { - pr_debug("Using %s for symbols\n", - vmlinux_path[i]); - dso__set_long_name(self, - strdup(vmlinux_path[i])); - goto out_fixup; + err = dso__load_vmlinux_path(self, map, filter); + if (err > 0) + goto out_fixup; + } + + /* + * Say the kernel DSO was created when processing the build-id header table, + * we have a build-id, so check if it is the same as the running kernel, + * using it if it is. + */ + if (self->has_build_id) { + u8 kallsyms_build_id[BUILD_ID_SIZE]; + char sbuild_id[BUILD_ID_SIZE * 2 + 1]; + + if (sysfs__read_build_id("/sys/kernel/notes", kallsyms_build_id, + sizeof(kallsyms_build_id)) == 0) { + if (dso__build_id_equal(self, kallsyms_build_id)) { + kallsyms_filename = "/proc/kallsyms"; + goto do_kallsyms; } } - } + /* + * Now look if we have it on the build-id cache in + * $HOME/.debug/[kernel.kallsyms]. + */ + build_id__sprintf(self->build_id, sizeof(self->build_id), + sbuild_id); - is_kallsyms = self->long_name[0] == '['; - if (is_kallsyms) - goto do_kallsyms; + if (asprintf(&kallsyms_allocated_filename, + "%s/.debug/[kernel.kallsyms]/%s", + getenv("HOME"), sbuild_id) == -1) { + pr_err("Not enough memory for kallsyms file lookup\n"); + return -1; + } - err = dso__load_vmlinux(self, map, session, self->long_name, filter); - if (err <= 0) { - pr_info("The file %s cannot be used, " - "trying to use /proc/kallsyms...", self->long_name); -do_kallsyms: - err = dso__load_kallsyms(self, map, session, filter); - if (err > 0 && !is_kallsyms) - dso__set_long_name(self, strdup("[kernel.kallsyms]")); + kallsyms_filename = kallsyms_allocated_filename; + + if (access(kallsyms_filename, F_OK)) { + pr_err("No kallsyms or vmlinux with build-id %s " + "was found\n", sbuild_id); + free(kallsyms_allocated_filename); + return -1; + } + } else { + /* + * Last resort, if we don't have a build-id and couldn't find + * any vmlinux file, try the running kernel kallsyms table. + */ + kallsyms_filename = "/proc/kallsyms"; } +do_kallsyms: + err = dso__load_kallsyms(self, kallsyms_filename, map, filter); + if (err > 0) + pr_debug("Using %s for symbols\n", kallsyms_filename); + free(kallsyms_allocated_filename); + if (err > 0) { out_fixup: + if (kallsyms_filename != NULL) + dso__set_long_name(self, strdup("[kernel.kallsyms]")); map__fixup_start(map); map__fixup_end(map); } @@ -1562,9 +1825,56 @@ out_fixup: return err; } -LIST_HEAD(dsos__user); -LIST_HEAD(dsos__kernel); -struct dso *vdso; +static int dso__load_guest_kernel_sym(struct dso *self, struct map *map, + symbol_filter_t filter) +{ + int err; + const char *kallsyms_filename = NULL; + struct machine *machine; + char path[PATH_MAX]; + + if (!map->groups) { + pr_debug("Guest kernel map hasn't the point to groups\n"); + return -1; + } + machine = map->groups->machine; + + if (machine__is_default_guest(machine)) { + /* + * if the user specified a vmlinux filename, use it and only + * it, reporting errors to the user if it cannot be used. + * Or use file guest_kallsyms inputted by user on commandline + */ + if (symbol_conf.default_guest_vmlinux_name != NULL) { + err = dso__load_vmlinux(self, map, + symbol_conf.default_guest_vmlinux_name, filter); + goto out_try_fixup; + } + + kallsyms_filename = symbol_conf.default_guest_kallsyms; + if (!kallsyms_filename) + return -1; + } else { + sprintf(path, "%s/proc/kallsyms", machine->root_dir); + kallsyms_filename = path; + } + + err = dso__load_kallsyms(self, kallsyms_filename, map, filter); + if (err > 0) + pr_debug("Using %s for symbols\n", kallsyms_filename); + +out_try_fixup: + if (err > 0) { + if (kallsyms_filename != NULL) { + machine__mmap_name(machine, path, sizeof(path)); + dso__set_long_name(self, strdup(path)); + } + map__fixup_start(map); + map__fixup_end(map); + } + + return err; +} static void dsos__add(struct list_head *head, struct dso *dso) { @@ -1576,19 +1886,19 @@ static struct dso *dsos__find(struct list_head *head, const char *name) struct dso *pos; list_for_each_entry(pos, head, node) - if (strcmp(pos->name, name) == 0) + if (strcmp(pos->long_name, name) == 0) return pos; return NULL; } -struct dso *dsos__findnew(const char *name) +struct dso *__dsos__findnew(struct list_head *head, const char *name) { - struct dso *dso = dsos__find(&dsos__user, name); + struct dso *dso = dsos__find(head, name); if (!dso) { dso = dso__new(name); if (dso != NULL) { - dsos__add(&dsos__user, dso); + dsos__add(head, dso); dso__set_basename(dso); } } @@ -1596,96 +1906,165 @@ struct dso *dsos__findnew(const char *name) return dso; } -static void __dsos__fprintf(struct list_head *head, FILE *fp) +size_t __dsos__fprintf(struct list_head *head, FILE *fp) { struct dso *pos; + size_t ret = 0; list_for_each_entry(pos, head, node) { int i; for (i = 0; i < MAP__NR_TYPES; ++i) - dso__fprintf(pos, i, fp); + ret += dso__fprintf(pos, i, fp); } + + return ret; } -void dsos__fprintf(FILE *fp) +size_t machines__fprintf_dsos(struct rb_root *self, FILE *fp) { - __dsos__fprintf(&dsos__kernel, fp); - __dsos__fprintf(&dsos__user, fp); + struct rb_node *nd; + size_t ret = 0; + + for (nd = rb_first(self); nd; nd = rb_next(nd)) { + struct machine *pos = rb_entry(nd, struct machine, rb_node); + ret += __dsos__fprintf(&pos->kernel_dsos, fp); + ret += __dsos__fprintf(&pos->user_dsos, fp); + } + + return ret; } -static size_t __dsos__fprintf_buildid(struct list_head *head, FILE *fp) +static size_t __dsos__fprintf_buildid(struct list_head *head, FILE *fp, + bool with_hits) { struct dso *pos; size_t ret = 0; list_for_each_entry(pos, head, node) { + if (with_hits && !pos->hit) + continue; ret += dso__fprintf_buildid(pos, fp); ret += fprintf(fp, " %s\n", pos->long_name); } return ret; } -size_t dsos__fprintf_buildid(FILE *fp) +size_t machine__fprintf_dsos_buildid(struct machine *self, FILE *fp, bool with_hits) { - return (__dsos__fprintf_buildid(&dsos__kernel, fp) + - __dsos__fprintf_buildid(&dsos__user, fp)); + return __dsos__fprintf_buildid(&self->kernel_dsos, fp, with_hits) + + __dsos__fprintf_buildid(&self->user_dsos, fp, with_hits); } -static struct dso *dsos__create_kernel( const char *vmlinux) +size_t machines__fprintf_dsos_buildid(struct rb_root *self, FILE *fp, bool with_hits) { - struct dso *kernel = dso__new(vmlinux ?: "[kernel.kallsyms]"); + struct rb_node *nd; + size_t ret = 0; - if (kernel == NULL) - return NULL; + for (nd = rb_first(self); nd; nd = rb_next(nd)) { + struct machine *pos = rb_entry(nd, struct machine, rb_node); + ret += machine__fprintf_dsos_buildid(pos, fp, with_hits); + } + return ret; +} - kernel->short_name = "[kernel]"; - kernel->kernel = 1; +struct dso *dso__new_kernel(const char *name) +{ + struct dso *self = dso__new(name ?: "[kernel.kallsyms]"); - vdso = dso__new("[vdso]"); - if (vdso == NULL) - goto out_delete_kernel_dso; - dso__set_loaded(vdso, MAP__FUNCTION); + if (self != NULL) { + dso__set_short_name(self, "[kernel]"); + self->kernel = DSO_TYPE_KERNEL; + } - if (sysfs__read_build_id("/sys/kernel/notes", kernel->build_id, - sizeof(kernel->build_id)) == 0) - kernel->has_build_id = true; + return self; +} - dsos__add(&dsos__kernel, kernel); - dsos__add(&dsos__user, vdso); +static struct dso *dso__new_guest_kernel(struct machine *machine, + const char *name) +{ + char bf[PATH_MAX]; + struct dso *self = dso__new(name ?: machine__mmap_name(machine, bf, sizeof(bf))); - return kernel; + if (self != NULL) { + dso__set_short_name(self, "[guest.kernel]"); + self->kernel = DSO_TYPE_GUEST_KERNEL; + } -out_delete_kernel_dso: - dso__delete(kernel); - return NULL; + return self; } -static int map_groups__create_kernel_maps(struct map_groups *self, const char *vmlinux) +void dso__read_running_kernel_build_id(struct dso *self, struct machine *machine) { - struct map *functions, *variables; - struct dso *kernel = dsos__create_kernel(vmlinux); + char path[PATH_MAX]; - if (kernel == NULL) - return -1; + if (machine__is_default_guest(machine)) + return; + sprintf(path, "%s/sys/kernel/notes", machine->root_dir); + if (sysfs__read_build_id(path, self->build_id, + sizeof(self->build_id)) == 0) + self->has_build_id = true; +} - functions = map__new2(0, kernel, MAP__FUNCTION); - if (functions == NULL) - return -1; +static struct dso *machine__create_kernel(struct machine *self) +{ + const char *vmlinux_name = NULL; + struct dso *kernel; - variables = map__new2(0, kernel, MAP__VARIABLE); - if (variables == NULL) { - map__delete(functions); - return -1; + if (machine__is_host(self)) { + vmlinux_name = symbol_conf.vmlinux_name; + kernel = dso__new_kernel(vmlinux_name); + } else { + if (machine__is_default_guest(self)) + vmlinux_name = symbol_conf.default_guest_vmlinux_name; + kernel = dso__new_guest_kernel(self, vmlinux_name); } - functions->map_ip = functions->unmap_ip = - variables->map_ip = variables->unmap_ip = identity__map_ip; - map_groups__insert(self, functions); - map_groups__insert(self, variables); + if (kernel != NULL) { + dso__read_running_kernel_build_id(kernel, self); + dsos__add(&self->kernel_dsos, kernel); + } + return kernel; +} + +int __machine__create_kernel_maps(struct machine *self, struct dso *kernel) +{ + enum map_type type; + + for (type = 0; type < MAP__NR_TYPES; ++type) { + struct kmap *kmap; + + self->vmlinux_maps[type] = map__new2(0, kernel, type); + if (self->vmlinux_maps[type] == NULL) + return -1; + + self->vmlinux_maps[type]->map_ip = + self->vmlinux_maps[type]->unmap_ip = identity__map_ip; + + kmap = map__kmap(self->vmlinux_maps[type]); + kmap->kmaps = &self->kmaps; + map_groups__insert(&self->kmaps, self->vmlinux_maps[type]); + } return 0; } +int machine__create_kernel_maps(struct machine *self) +{ + struct dso *kernel = machine__create_kernel(self); + + if (kernel == NULL || + __machine__create_kernel_maps(self, kernel) < 0) + return -1; + + if (symbol_conf.use_modules && machine__create_modules(self) < 0) + pr_debug("Problems creating module maps, continuing anyway...\n"); + /* + * Now that we have all the maps created, just set the ->end of them: + */ + map_groups__fixup_end(&self->kmaps); + return 0; +} + static void vmlinux_path__exit(void) { while (--vmlinux_path__nr_entries >= 0) { @@ -1741,6 +2120,25 @@ out_fail: return -1; } +size_t machine__fprintf_vmlinux_path(struct machine *self, FILE *fp) +{ + int i; + size_t printed = 0; + struct dso *kdso = self->vmlinux_maps[MAP__FUNCTION]->dso; + + if (kdso->has_build_id) { + char filename[PATH_MAX]; + if (dso__build_id_filename(kdso, filename, sizeof(filename))) + printed += fprintf(fp, "[0] %s\n", filename); + } + + for (i = 0; i < vmlinux_path__nr_entries; ++i) + printed += fprintf(fp, "[%d] %s\n", + i + kdso->has_build_id, vmlinux_path[i]); + + return printed; +} + static int setup_list(struct strlist **list, const char *list_str, const char *list_name) { @@ -1791,19 +2189,129 @@ out_free_comm_list: return -1; } -int perf_session__create_kernel_maps(struct perf_session *self) +int machines__create_kernel_maps(struct rb_root *self, pid_t pid) { - if (map_groups__create_kernel_maps(&self->kmaps, - symbol_conf.vmlinux_name) < 0) + struct machine *machine = machines__findnew(self, pid); + + if (machine == NULL) return -1; - if (symbol_conf.use_modules && - perf_session__create_module_maps(self) < 0) - pr_debug("Failed to load list of modules for session %s, " - "continuing...\n", self->filename); - /* - * Now that we have all the maps created, just set the ->end of them: - */ - map_groups__fixup_end(&self->kmaps); - return 0; + return machine__create_kernel_maps(machine); +} + +static int hex(char ch) +{ + if ((ch >= '0') && (ch <= '9')) + return ch - '0'; + if ((ch >= 'a') && (ch <= 'f')) + return ch - 'a' + 10; + if ((ch >= 'A') && (ch <= 'F')) + return ch - 'A' + 10; + return -1; +} + +/* + * While we find nice hex chars, build a long_val. + * Return number of chars processed. + */ +int hex2u64(const char *ptr, u64 *long_val) +{ + const char *p = ptr; + *long_val = 0; + + while (*p) { + const int hex_val = hex(*p); + + if (hex_val < 0) + break; + + *long_val = (*long_val << 4) | hex_val; + p++; + } + + return p - ptr; +} + +char *strxfrchar(char *s, char from, char to) +{ + char *p = s; + + while ((p = strchr(p, from)) != NULL) + *p++ = to; + + return s; +} + +int machines__create_guest_kernel_maps(struct rb_root *self) +{ + int ret = 0; + struct dirent **namelist = NULL; + int i, items = 0; + char path[PATH_MAX]; + pid_t pid; + + if (symbol_conf.default_guest_vmlinux_name || + symbol_conf.default_guest_modules || + symbol_conf.default_guest_kallsyms) { + machines__create_kernel_maps(self, DEFAULT_GUEST_KERNEL_ID); + } + + if (symbol_conf.guestmount) { + items = scandir(symbol_conf.guestmount, &namelist, NULL, NULL); + if (items <= 0) + return -ENOENT; + for (i = 0; i < items; i++) { + if (!isdigit(namelist[i]->d_name[0])) { + /* Filter out . and .. */ + continue; + } + pid = atoi(namelist[i]->d_name); + sprintf(path, "%s/%s/proc/kallsyms", + symbol_conf.guestmount, + namelist[i]->d_name); + ret = access(path, R_OK); + if (ret) { + pr_debug("Can't access file %s\n", path); + goto failure; + } + machines__create_kernel_maps(self, pid); + } +failure: + free(namelist); + } + + return ret; +} + +int machine__load_kallsyms(struct machine *self, const char *filename, + enum map_type type, symbol_filter_t filter) +{ + struct map *map = self->vmlinux_maps[type]; + int ret = dso__load_kallsyms(map->dso, filename, map, filter); + + if (ret > 0) { + dso__set_loaded(map->dso, type); + /* + * Since /proc/kallsyms will have multiple sessions for the + * kernel, with modules between them, fixup the end of all + * sections. + */ + __map_groups__fixup_end(&self->kmaps, type); + } + + return ret; +} + +int machine__load_vmlinux_path(struct machine *self, enum map_type type, + symbol_filter_t filter) +{ + struct map *map = self->vmlinux_maps[type]; + int ret = dso__load_vmlinux_path(map->dso, map, filter); + + if (ret > 0) { + dso__set_loaded(map->dso, type); + map__reloc_vmlinux(map); + } + + return ret; } diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h index 8aded2356f79..5e02d2c17154 100644 --- a/tools/perf/util/symbol.h +++ b/tools/perf/util/symbol.h @@ -3,10 +3,13 @@ #include <linux/types.h> #include <stdbool.h> -#include "types.h" +#include <stdint.h> +#include "map.h" #include <linux/list.h> #include <linux/rbtree.h> -#include "event.h" +#include <stdio.h> + +#define DEBUG_CACHE_DIR ".debug" #ifdef HAVE_CPLUS_DEMANGLE extern char *cplus_demangle(const char *, int); @@ -27,6 +30,9 @@ static inline char *bfd_demangle(void __used *v, const char __used *c, #endif #endif +int hex2u64(const char *ptr, u64 *val); +char *strxfrchar(char *s, char from, char to); + /* * libelf 0.8.x and earlier do not support ELF_C_READ_MMAP; * for newer versions we can use mmap to reduce memory usage: @@ -42,13 +48,18 @@ static inline char *bfd_demangle(void __used *v, const char __used *c, #define DMGL_ANSI (1 << 1) /* Include const, volatile, etc */ #endif +#define BUILD_ID_SIZE 20 + struct symbol { struct rb_node rb_node; u64 start; u64 end; + u16 namelen; char name[0]; }; +void symbol__delete(struct symbol *self); + struct strlist; struct symbol_conf { @@ -58,10 +69,16 @@ struct symbol_conf { sort_by_name, show_nr_samples, use_callchain, - exclude_other; + exclude_other, + full_paths, + show_cpu_utilization; const char *vmlinux_name, *field_sep; - char *dso_list_str, + const char *default_guest_vmlinux_name, + *default_guest_kallsyms, + *default_guest_modules; + const char *guestmount; + const char *dso_list_str, *comm_list_str, *sym_list_str, *col_width_list_str; @@ -77,6 +94,17 @@ static inline void *symbol__priv(struct symbol *self) return ((void *)self) - symbol_conf.priv_size; } +struct ref_reloc_sym { + const char *name; + u64 addr; + u64 unrelocated_addr; +}; + +struct map_symbol { + struct map *map; + struct symbol *sym; +}; + struct addr_location { struct thread *thread; struct map *map; @@ -84,6 +112,13 @@ struct addr_location { u64 addr; char level; bool filtered; + unsigned int cpumode; +}; + +enum dso_kernel_type { + DSO_TYPE_USER = 0, + DSO_TYPE_KERNEL, + DSO_TYPE_GUEST_KERNEL }; struct dso { @@ -93,49 +128,94 @@ struct dso { u8 adjust_symbols:1; u8 slen_calculated:1; u8 has_build_id:1; - u8 kernel:1; + enum dso_kernel_type kernel; + u8 hit:1; + u8 annotate_warned:1; unsigned char origin; u8 sorted_by_name; u8 loaded; u8 build_id[BUILD_ID_SIZE]; - u16 long_name_len; const char *short_name; char *long_name; + u16 long_name_len; + u16 short_name_len; char name[0]; }; struct dso *dso__new(const char *name); +struct dso *dso__new_kernel(const char *name); void dso__delete(struct dso *self); bool dso__loaded(const struct dso *self, enum map_type type); bool dso__sorted_by_name(const struct dso *self, enum map_type type); +static inline void dso__set_loaded(struct dso *self, enum map_type type) +{ + self->loaded |= (1 << type); +} + void dso__sort_by_name(struct dso *self, enum map_type type); -struct perf_session; +struct dso *__dsos__findnew(struct list_head *head, const char *name); + +int dso__load(struct dso *self, struct map *map, symbol_filter_t filter); +int dso__load_vmlinux_path(struct dso *self, struct map *map, + symbol_filter_t filter); +int dso__load_kallsyms(struct dso *self, const char *filename, struct map *map, + symbol_filter_t filter); +int machine__load_kallsyms(struct machine *self, const char *filename, + enum map_type type, symbol_filter_t filter); +int machine__load_vmlinux_path(struct machine *self, enum map_type type, + symbol_filter_t filter); + +size_t __dsos__fprintf(struct list_head *head, FILE *fp); -struct dso *dsos__findnew(const char *name); -int dso__load(struct dso *self, struct map *map, struct perf_session *session, - symbol_filter_t filter); -void dsos__fprintf(FILE *fp); -size_t dsos__fprintf_buildid(FILE *fp); +size_t machine__fprintf_dsos_buildid(struct machine *self, FILE *fp, bool with_hits); +size_t machines__fprintf_dsos(struct rb_root *self, FILE *fp); +size_t machines__fprintf_dsos_buildid(struct rb_root *self, FILE *fp, bool with_hits); size_t dso__fprintf_buildid(struct dso *self, FILE *fp); size_t dso__fprintf(struct dso *self, enum map_type type, FILE *fp); + +enum dso_origin { + DSO__ORIG_KERNEL = 0, + DSO__ORIG_GUEST_KERNEL, + DSO__ORIG_JAVA_JIT, + DSO__ORIG_BUILD_ID_CACHE, + DSO__ORIG_FEDORA, + DSO__ORIG_UBUNTU, + DSO__ORIG_BUILDID, + DSO__ORIG_DSO, + DSO__ORIG_GUEST_KMODULE, + DSO__ORIG_KMODULE, + DSO__ORIG_NOT_FOUND, +}; + char dso__symtab_origin(const struct dso *self); +void dso__set_long_name(struct dso *self, char *name); void dso__set_build_id(struct dso *self, void *build_id); +void dso__read_running_kernel_build_id(struct dso *self, struct machine *machine); struct symbol *dso__find_symbol(struct dso *self, enum map_type type, u64 addr); struct symbol *dso__find_symbol_by_name(struct dso *self, enum map_type type, const char *name); int filename__read_build_id(const char *filename, void *bf, size_t size); int sysfs__read_build_id(const char *filename, void *bf, size_t size); -bool dsos__read_build_ids(void); -int build_id__sprintf(u8 *self, int len, char *bf); +bool __dsos__read_build_ids(struct list_head *head, bool with_hits); +int build_id__sprintf(const u8 *self, int len, char *bf); +int kallsyms__parse(const char *filename, void *arg, + int (*process_symbol)(void *arg, const char *name, + char type, u64 start)); + +int __machine__create_kernel_maps(struct machine *self, struct dso *kernel); +int machine__create_kernel_maps(struct machine *self); + +int machines__create_kernel_maps(struct rb_root *self, pid_t pid); +int machines__create_guest_kernel_maps(struct rb_root *self); int symbol__init(void); -int perf_session__create_kernel_maps(struct perf_session *self); +bool symbol_type__is_a(char symbol_type, enum map_type map_type); + +size_t machine__fprintf_vmlinux_path(struct machine *self, FILE *fp); -extern struct list_head dsos__user, dsos__kernel; -extern struct dso *vdso; #endif /* __PERF_SYMBOL */ diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c index 4a08dcf50b68..9a448b47400c 100644 --- a/tools/perf/util/thread.c +++ b/tools/perf/util/thread.c @@ -7,13 +7,44 @@ #include "util.h" #include "debug.h" -void map_groups__init(struct map_groups *self) +/* Skip "." and ".." directories */ +static int filter(const struct dirent *dir) { + if (dir->d_name[0] == '.') + return 0; + else + return 1; +} + +int find_all_tid(int pid, pid_t ** all_tid) +{ + char name[256]; + int items; + struct dirent **namelist = NULL; + int ret = 0; int i; - for (i = 0; i < MAP__NR_TYPES; ++i) { - self->maps[i] = RB_ROOT; - INIT_LIST_HEAD(&self->removed_maps[i]); + + sprintf(name, "/proc/%d/task", pid); + items = scandir(name, &namelist, filter, NULL); + if (items <= 0) + return -ENOENT; + *all_tid = malloc(sizeof(pid_t) * items); + if (!*all_tid) { + ret = -ENOMEM; + goto failure; } + + for (i = 0; i < items; i++) + (*all_tid)[i] = atoi(namelist[i]->d_name); + + ret = items; + +failure: + for (i=0; i<items; i++) + free(namelist[i]); + free(namelist); + + return ret; } static struct thread *thread__new(pid_t pid) @@ -33,10 +64,17 @@ static struct thread *thread__new(pid_t pid) int thread__set_comm(struct thread *self, const char *comm) { + int err; + if (self->comm) free(self->comm); self->comm = strdup(comm); - return self->comm ? 0 : -ENOMEM; + err = self->comm == NULL ? -ENOMEM : 0; + if (!err) { + self->comm_set = true; + map_groups__flush(&self->mg); + } + return err; } int thread__comm_len(struct thread *self) @@ -50,74 +88,10 @@ int thread__comm_len(struct thread *self) return self->comm_len; } -static const char *map_type__name[MAP__NR_TYPES] = { - [MAP__FUNCTION] = "Functions", - [MAP__VARIABLE] = "Variables", -}; - -static size_t __map_groups__fprintf_maps(struct map_groups *self, - enum map_type type, FILE *fp) -{ - size_t printed = fprintf(fp, "%s:\n", map_type__name[type]); - struct rb_node *nd; - - for (nd = rb_first(&self->maps[type]); nd; nd = rb_next(nd)) { - struct map *pos = rb_entry(nd, struct map, rb_node); - printed += fprintf(fp, "Map:"); - printed += map__fprintf(pos, fp); - if (verbose > 1) { - printed += dso__fprintf(pos->dso, type, fp); - printed += fprintf(fp, "--\n"); - } - } - - return printed; -} - -size_t map_groups__fprintf_maps(struct map_groups *self, FILE *fp) -{ - size_t printed = 0, i; - for (i = 0; i < MAP__NR_TYPES; ++i) - printed += __map_groups__fprintf_maps(self, i, fp); - return printed; -} - -static size_t __map_groups__fprintf_removed_maps(struct map_groups *self, - enum map_type type, FILE *fp) -{ - struct map *pos; - size_t printed = 0; - - list_for_each_entry(pos, &self->removed_maps[type], node) { - printed += fprintf(fp, "Map:"); - printed += map__fprintf(pos, fp); - if (verbose > 1) { - printed += dso__fprintf(pos->dso, type, fp); - printed += fprintf(fp, "--\n"); - } - } - return printed; -} - -static size_t map_groups__fprintf_removed_maps(struct map_groups *self, FILE *fp) -{ - size_t printed = 0, i; - for (i = 0; i < MAP__NR_TYPES; ++i) - printed += __map_groups__fprintf_removed_maps(self, i, fp); - return printed; -} - -static size_t map_groups__fprintf(struct map_groups *self, FILE *fp) -{ - size_t printed = map_groups__fprintf_maps(self, fp); - printed += fprintf(fp, "Removed maps:\n"); - return printed + map_groups__fprintf_removed_maps(self, fp); -} - static size_t thread__fprintf(struct thread *self, FILE *fp) { return fprintf(fp, "Thread %d %s\n", self->pid, self->comm) + - map_groups__fprintf(&self->mg, fp); + map_groups__fprintf(&self->mg, verbose, fp); } struct thread *perf_session__findnew(struct perf_session *self, pid_t pid) @@ -159,107 +133,24 @@ struct thread *perf_session__findnew(struct perf_session *self, pid_t pid) return th; } -static void map_groups__remove_overlappings(struct map_groups *self, - struct map *map) -{ - struct rb_root *root = &self->maps[map->type]; - struct rb_node *next = rb_first(root); - - while (next) { - struct map *pos = rb_entry(next, struct map, rb_node); - next = rb_next(&pos->rb_node); - - if (!map__overlap(pos, map)) - continue; - - if (verbose >= 2) { - fputs("overlapping maps:\n", stderr); - map__fprintf(map, stderr); - map__fprintf(pos, stderr); - } - - rb_erase(&pos->rb_node, root); - /* - * We may have references to this map, for instance in some - * hist_entry instances, so just move them to a separate - * list. - */ - list_add_tail(&pos->node, &self->removed_maps[map->type]); - } -} - -void maps__insert(struct rb_root *maps, struct map *map) -{ - struct rb_node **p = &maps->rb_node; - struct rb_node *parent = NULL; - const u64 ip = map->start; - struct map *m; - - while (*p != NULL) { - parent = *p; - m = rb_entry(parent, struct map, rb_node); - if (ip < m->start) - p = &(*p)->rb_left; - else - p = &(*p)->rb_right; - } - - rb_link_node(&map->rb_node, parent, p); - rb_insert_color(&map->rb_node, maps); -} - -struct map *maps__find(struct rb_root *maps, u64 ip) -{ - struct rb_node **p = &maps->rb_node; - struct rb_node *parent = NULL; - struct map *m; - - while (*p != NULL) { - parent = *p; - m = rb_entry(parent, struct map, rb_node); - if (ip < m->start) - p = &(*p)->rb_left; - else if (ip > m->end) - p = &(*p)->rb_right; - else - return m; - } - - return NULL; -} - void thread__insert_map(struct thread *self, struct map *map) { - map_groups__remove_overlappings(&self->mg, map); + map_groups__fixup_overlappings(&self->mg, map, verbose, stderr); map_groups__insert(&self->mg, map); } -/* - * XXX This should not really _copy_ te maps, but refcount them. - */ -static int map_groups__clone(struct map_groups *self, - struct map_groups *parent, enum map_type type) -{ - struct rb_node *nd; - for (nd = rb_first(&parent->maps[type]); nd; nd = rb_next(nd)) { - struct map *map = rb_entry(nd, struct map, rb_node); - struct map *new = map__clone(map); - if (new == NULL) - return -ENOMEM; - map_groups__insert(self, new); - } - return 0; -} - int thread__fork(struct thread *self, struct thread *parent) { int i; - if (self->comm) - free(self->comm); - self->comm = strdup(parent->comm); - if (!self->comm) - return -ENOMEM; + if (parent->comm_set) { + if (self->comm) + free(self->comm); + self->comm = strdup(parent->comm); + if (!self->comm) + return -ENOMEM; + self->comm_set = true; + } for (i = 0; i < MAP__NR_TYPES; ++i) if (map_groups__clone(&self->mg, &parent->mg, i) < 0) @@ -280,16 +171,3 @@ size_t perf_session__fprintf(struct perf_session *self, FILE *fp) return ret; } - -struct symbol *map_groups__find_symbol(struct map_groups *self, - struct perf_session *session, - enum map_type type, u64 addr, - symbol_filter_t filter) -{ - struct map *map = map_groups__find(self, type, addr); - - if (map != NULL) - return map__find_symbol(map, session, map->map_ip(map, addr), filter); - - return NULL; -} diff --git a/tools/perf/util/thread.h b/tools/perf/util/thread.h index c206f72c8881..ee6bbcf277ca 100644 --- a/tools/perf/util/thread.h +++ b/tools/perf/util/thread.h @@ -5,66 +5,43 @@ #include <unistd.h> #include "symbol.h" -struct map_groups { - struct rb_root maps[MAP__NR_TYPES]; - struct list_head removed_maps[MAP__NR_TYPES]; -}; - struct thread { - struct rb_node rb_node; + union { + struct rb_node rb_node; + struct list_head node; + }; struct map_groups mg; pid_t pid; char shortname[3]; + bool comm_set; char *comm; int comm_len; }; -void map_groups__init(struct map_groups *self); +struct perf_session; + +int find_all_tid(int pid, pid_t ** all_tid); int thread__set_comm(struct thread *self, const char *comm); int thread__comm_len(struct thread *self); struct thread *perf_session__findnew(struct perf_session *self, pid_t pid); void thread__insert_map(struct thread *self, struct map *map); int thread__fork(struct thread *self, struct thread *parent); -size_t map_groups__fprintf_maps(struct map_groups *self, FILE *fp); size_t perf_session__fprintf(struct perf_session *self, FILE *fp); -void maps__insert(struct rb_root *maps, struct map *map); -struct map *maps__find(struct rb_root *maps, u64 addr); - -static inline void map_groups__insert(struct map_groups *self, struct map *map) -{ - maps__insert(&self->maps[map->type], map); -} - -static inline struct map *map_groups__find(struct map_groups *self, - enum map_type type, u64 addr) -{ - return maps__find(&self->maps[type], addr); -} - static inline struct map *thread__find_map(struct thread *self, enum map_type type, u64 addr) { return self ? map_groups__find(&self->mg, type, addr) : NULL; } +void thread__find_addr_map(struct thread *self, + struct perf_session *session, u8 cpumode, + enum map_type type, pid_t pid, u64 addr, + struct addr_location *al); + void thread__find_addr_location(struct thread *self, struct perf_session *session, u8 cpumode, - enum map_type type, u64 addr, + enum map_type type, pid_t pid, u64 addr, struct addr_location *al, symbol_filter_t filter); -struct symbol *map_groups__find_symbol(struct map_groups *self, - struct perf_session *session, - enum map_type type, u64 addr, - symbol_filter_t filter); - -static inline struct symbol * -map_groups__find_function(struct map_groups *self, struct perf_session *session, - u64 addr, symbol_filter_t filter) -{ - return map_groups__find_symbol(self, session, MAP__FUNCTION, addr, filter); -} - -struct map *map_groups__find_by_name(struct map_groups *self, - enum map_type type, const char *name); #endif /* __PERF_THREAD_H */ diff --git a/tools/perf/util/trace-event-info.c b/tools/perf/util/trace-event-info.c index cace35595530..b1572601286c 100644 --- a/tools/perf/util/trace-event-info.c +++ b/tools/perf/util/trace-event-info.c @@ -20,6 +20,7 @@ */ #define _GNU_SOURCE #include <dirent.h> +#include <mntent.h> #include <stdio.h> #include <stdlib.h> #include <string.h> @@ -37,6 +38,7 @@ #include "../perf.h" #include "trace-event.h" +#include "debugfs.h" #define VERSION "0.5" @@ -101,32 +103,12 @@ void *malloc_or_die(unsigned int size) static const char *find_debugfs(void) { - static char debugfs[MAX_PATH+1]; - static int debugfs_found; - char type[100]; - FILE *fp; - - if (debugfs_found) - return debugfs; - - if ((fp = fopen("/proc/mounts","r")) == NULL) - die("Can't open /proc/mounts for read"); - - while (fscanf(fp, "%*s %" - STR(MAX_PATH) - "s %99s %*s %*d %*d\n", - debugfs, type) == 2) { - if (strcmp(type, "debugfs") == 0) - break; - } - fclose(fp); - - if (strcmp(type, "debugfs") != 0) - die("debugfs not mounted, please mount"); + const char *path = debugfs_mount(NULL); - debugfs_found = 1; + if (!path) + die("Your kernel not support debugfs filesystem"); - return debugfs; + return path; } /* @@ -172,10 +154,17 @@ static void put_tracing_file(char *file) free(file); } +static ssize_t calc_data_size; + static ssize_t write_or_die(const void *buf, size_t len) { int ret; + if (calc_data_size) { + calc_data_size += len; + return len; + } + ret = write(output_fd, buf, len); if (ret < 0) die("writing to '%s'", output_file); @@ -271,6 +260,8 @@ static void read_header_files(void) write_or_die("header_page", 12); write_or_die(&size, 8); check_size = copy_file_fd(fd); + close(fd); + if (size != check_size) die("wrong size for '%s' size=%lld read=%lld", path, size, check_size); @@ -289,6 +280,7 @@ static void read_header_files(void) if (size != check_size) die("wrong size for '%s'", path); put_tracing_file(path); + close(fd); } static bool name_in_tp_list(char *sys, struct tracepoint_path *tps) @@ -317,7 +309,8 @@ static void copy_event_system(const char *sys, struct tracepoint_path *tps) die("can't read directory '%s'", sys); while ((dent = readdir(dir))) { - if (strcmp(dent->d_name, ".") == 0 || + if (dent->d_type != DT_DIR || + strcmp(dent->d_name, ".") == 0 || strcmp(dent->d_name, "..") == 0 || !name_in_tp_list(dent->d_name, tps)) continue; @@ -334,7 +327,8 @@ static void copy_event_system(const char *sys, struct tracepoint_path *tps) rewinddir(dir); while ((dent = readdir(dir))) { - if (strcmp(dent->d_name, ".") == 0 || + if (dent->d_type != DT_DIR || + strcmp(dent->d_name, ".") == 0 || strcmp(dent->d_name, "..") == 0 || !name_in_tp_list(dent->d_name, tps)) continue; @@ -353,6 +347,7 @@ static void copy_event_system(const char *sys, struct tracepoint_path *tps) free(format); } + closedir(dir); } static void read_ftrace_files(struct tracepoint_path *tps) @@ -394,26 +389,21 @@ static void read_event_files(struct tracepoint_path *tps) die("can't read directory '%s'", path); while ((dent = readdir(dir))) { - if (strcmp(dent->d_name, ".") == 0 || + if (dent->d_type != DT_DIR || + strcmp(dent->d_name, ".") == 0 || strcmp(dent->d_name, "..") == 0 || strcmp(dent->d_name, "ftrace") == 0 || !system_in_tp_list(dent->d_name, tps)) continue; - sys = malloc_or_die(strlen(path) + strlen(dent->d_name) + 2); - sprintf(sys, "%s/%s", path, dent->d_name); - ret = stat(sys, &st); - free(sys); - if (ret < 0) - continue; - if (S_ISDIR(st.st_mode)) - count++; + count++; } write_or_die(&count, 4); rewinddir(dir); while ((dent = readdir(dir))) { - if (strcmp(dent->d_name, ".") == 0 || + if (dent->d_type != DT_DIR || + strcmp(dent->d_name, ".") == 0 || strcmp(dent->d_name, "..") == 0 || strcmp(dent->d_name, "ftrace") == 0 || !system_in_tp_list(dent->d_name, tps)) @@ -422,14 +412,13 @@ static void read_event_files(struct tracepoint_path *tps) sprintf(sys, "%s/%s", path, dent->d_name); ret = stat(sys, &st); if (ret >= 0) { - if (S_ISDIR(st.st_mode)) { - write_or_die(dent->d_name, strlen(dent->d_name) + 1); - copy_event_system(sys, tps); - } + write_or_die(dent->d_name, strlen(dent->d_name) + 1); + copy_event_system(sys, tps); } free(sys); } + closedir(dir); put_tracing_file(path); } @@ -498,6 +487,17 @@ get_tracepoints_path(struct perf_event_attr *pattrs, int nb_events) return nr_tracepoints > 0 ? path.next : NULL; } +bool have_tracepoints(struct perf_event_attr *pattrs, int nb_events) +{ + int i; + + for (i = 0; i < nb_events; i++) + if (pattrs[i].type == PERF_TYPE_TRACEPOINT) + return true; + + return false; +} + int read_tracing_data(int fd, struct perf_event_attr *pattrs, int nb_events) { char buf[BUFSIZ]; @@ -533,7 +533,7 @@ int read_tracing_data(int fd, struct perf_event_attr *pattrs, int nb_events) write_or_die(buf, 1); /* save page_size */ - page_size = getpagesize(); + page_size = sysconf(_SC_PAGESIZE); write_or_die(&page_size, 4); read_header_files(); @@ -544,3 +544,20 @@ int read_tracing_data(int fd, struct perf_event_attr *pattrs, int nb_events) return 0; } + +ssize_t read_tracing_data_size(int fd, struct perf_event_attr *pattrs, + int nb_events) +{ + ssize_t size; + int err = 0; + + calc_data_size = 1; + err = read_tracing_data(fd, pattrs, nb_events); + size = calc_data_size - 1; + calc_data_size = 0; + + if (err < 0) + return err; + + return size; +} diff --git a/tools/perf/util/trace-event-parse.c b/tools/perf/util/trace-event-parse.c index c5c32be040bf..73a02223c629 100644 --- a/tools/perf/util/trace-event-parse.c +++ b/tools/perf/util/trace-event-parse.c @@ -37,10 +37,12 @@ int header_page_ts_offset; int header_page_ts_size; int header_page_size_offset; int header_page_size_size; +int header_page_overwrite_offset; +int header_page_overwrite_size; int header_page_data_offset; int header_page_data_size; -int latency_format; +bool latency_format; static char *input_buf; static unsigned long long input_buf_ptr; @@ -628,23 +630,32 @@ static int test_type(enum event_type type, enum event_type expect) return 0; } -static int test_type_token(enum event_type type, char *token, - enum event_type expect, const char *expect_tok) +static int __test_type_token(enum event_type type, char *token, + enum event_type expect, const char *expect_tok, + bool warn) { if (type != expect) { - warning("Error: expected type %d but read %d", - expect, type); + if (warn) + warning("Error: expected type %d but read %d", + expect, type); return -1; } if (strcmp(token, expect_tok) != 0) { - warning("Error: expected '%s' but read '%s'", - expect_tok, token); + if (warn) + warning("Error: expected '%s' but read '%s'", + expect_tok, token); return -1; } return 0; } +static int test_type_token(enum event_type type, char *token, + enum event_type expect, const char *expect_tok) +{ + return __test_type_token(type, token, expect, expect_tok, true); +} + static int __read_expect_type(enum event_type expect, char **tok, int newline_ok) { enum event_type type; @@ -661,7 +672,8 @@ static int read_expect_type(enum event_type expect, char **tok) return __read_expect_type(expect, tok, 1); } -static int __read_expected(enum event_type expect, const char *str, int newline_ok) +static int __read_expected(enum event_type expect, const char *str, + int newline_ok, bool warn) { enum event_type type; char *token; @@ -672,7 +684,7 @@ static int __read_expected(enum event_type expect, const char *str, int newline_ else type = read_token_item(&token); - ret = test_type_token(type, token, expect, str); + ret = __test_type_token(type, token, expect, str, warn); free_token(token); @@ -681,12 +693,12 @@ static int __read_expected(enum event_type expect, const char *str, int newline_ static int read_expected(enum event_type expect, const char *str) { - return __read_expected(expect, str, 1); + return __read_expected(expect, str, 1, true); } static int read_expected_item(enum event_type expect, const char *str) { - return __read_expected(expect, str, 0); + return __read_expected(expect, str, 0, true); } static char *event_read_name(void) @@ -744,7 +756,7 @@ static int field_is_string(struct format_field *field) static int field_is_dynamic(struct format_field *field) { - if (!strcmp(field->type, "__data_loc")) + if (!strncmp(field->type, "__data_loc", 10)) return 1; return 0; @@ -1925,6 +1937,15 @@ void *raw_field_ptr(struct event *event, const char *name, void *data) if (!field) return NULL; + if (field->flags & FIELD_IS_DYNAMIC) { + int offset; + + offset = *(int *)(data + field->offset); + offset &= 0xffff; + + return data + offset; + } + return data + field->offset; } @@ -3078,88 +3099,6 @@ static void print_args(struct print_arg *args) } } -static void parse_header_field(const char *field, - int *offset, int *size) -{ - char *token; - int type; - - if (read_expected(EVENT_ITEM, "field") < 0) - return; - if (read_expected(EVENT_OP, ":") < 0) - return; - - /* type */ - if (read_expect_type(EVENT_ITEM, &token) < 0) - goto fail; - free_token(token); - - if (read_expected(EVENT_ITEM, field) < 0) - return; - if (read_expected(EVENT_OP, ";") < 0) - return; - if (read_expected(EVENT_ITEM, "offset") < 0) - return; - if (read_expected(EVENT_OP, ":") < 0) - return; - if (read_expect_type(EVENT_ITEM, &token) < 0) - goto fail; - *offset = atoi(token); - free_token(token); - if (read_expected(EVENT_OP, ";") < 0) - return; - if (read_expected(EVENT_ITEM, "size") < 0) - return; - if (read_expected(EVENT_OP, ":") < 0) - return; - if (read_expect_type(EVENT_ITEM, &token) < 0) - goto fail; - *size = atoi(token); - free_token(token); - if (read_expected(EVENT_OP, ";") < 0) - return; - type = read_token(&token); - if (type != EVENT_NEWLINE) { - /* newer versions of the kernel have a "signed" type */ - if (type != EVENT_ITEM) - goto fail; - - if (strcmp(token, "signed") != 0) - goto fail; - - free_token(token); - - if (read_expected(EVENT_OP, ":") < 0) - return; - - if (read_expect_type(EVENT_ITEM, &token)) - goto fail; - - free_token(token); - if (read_expected(EVENT_OP, ";") < 0) - return; - - if (read_expect_type(EVENT_NEWLINE, &token)) - goto fail; - } - fail: - free_token(token); -} - -int parse_header_page(char *buf, unsigned long size) -{ - init_input_buf(buf, size); - - parse_header_field("timestamp", &header_page_ts_offset, - &header_page_ts_size); - parse_header_field("commit", &header_page_size_offset, - &header_page_size_size); - parse_header_field("data", &header_page_data_offset, - &header_page_data_size); - - return 0; -} - int parse_ftrace_file(char *buf, unsigned long size) { struct format_field *field; @@ -3277,3 +3216,18 @@ void parse_set_info(int nr_cpus, int long_sz) cpus = nr_cpus; long_size = long_sz; } + +int common_pc(struct scripting_context *context) +{ + return parse_common_pc(context->event_data); +} + +int common_flags(struct scripting_context *context) +{ + return parse_common_flags(context->event_data); +} + +int common_lock_depth(struct scripting_context *context) +{ + return parse_common_lock_depth(context->event_data); +} diff --git a/tools/perf/util/trace-event-perl.h b/tools/perf/util/trace-event-perl.h deleted file mode 100644 index e88fb26137bb..000000000000 --- a/tools/perf/util/trace-event-perl.h +++ /dev/null @@ -1,55 +0,0 @@ -#ifndef __PERF_TRACE_EVENT_PERL_H -#define __PERF_TRACE_EVENT_PERL_H -#ifdef NO_LIBPERL -typedef int INTERP; -#define dSP -#define ENTER -#define SAVETMPS -#define PUTBACK -#define SPAGAIN -#define FREETMPS -#define LEAVE -#define SP -#define ERRSV -#define G_SCALAR (0) -#define G_DISCARD (0) -#define G_NOARGS (0) -#define PUSHMARK(a) -#define SvTRUE(a) (0) -#define XPUSHs(s) -#define sv_2mortal(a) -#define newSVpv(a,b) -#define newSVuv(a) -#define newSViv(a) -#define get_cv(a,b) (0) -#define call_pv(a,b) (0) -#define perl_alloc() (0) -#define perl_construct(a) (0) -#define perl_parse(a,b,c,d,e) (0) -#define perl_run(a) (0) -#define perl_destruct(a) (0) -#define perl_free(a) (0) -#define pTHX void -#define CV void -#define dXSUB_SYS -#define pTHX_ -static inline void newXS(const char *a, void *b, const char *c) {} -static void boot_Perf__Trace__Context(pTHX_ CV *cv) {} -static void boot_DynaLoader(pTHX_ CV *cv) {} -#else -#include <EXTERN.h> -#include <perl.h> -void boot_Perf__Trace__Context(pTHX_ CV *cv); -void boot_DynaLoader(pTHX_ CV *cv); -typedef PerlInterpreter * INTERP; -#endif - -struct scripting_context { - void *event_data; -}; - -int common_pc(struct scripting_context *context); -int common_flags(struct scripting_context *context); -int common_lock_depth(struct scripting_context *context); - -#endif /* __PERF_TRACE_EVENT_PERL_H */ diff --git a/tools/perf/util/trace-event-read.c b/tools/perf/util/trace-event-read.c index 1744422cafcb..f55cc3a765a1 100644 --- a/tools/perf/util/trace-event-read.c +++ b/tools/perf/util/trace-event-read.c @@ -18,7 +18,7 @@ * * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */ -#define _LARGEFILE64_SOURCE +#define _FILE_OFFSET_BITS 64 #include <dirent.h> #include <stdio.h> @@ -50,17 +50,61 @@ static int long_size; static unsigned long page_size; +static ssize_t calc_data_size; +static bool repipe; + +static int do_read(int fd, void *buf, int size) +{ + int rsize = size; + + while (size) { + int ret = read(fd, buf, size); + + if (ret <= 0) + return -1; + + if (repipe) { + int retw = write(STDOUT_FILENO, buf, ret); + + if (retw <= 0 || retw != ret) + die("repiping input file"); + } + + size -= ret; + buf += ret; + } + + return rsize; +} + static int read_or_die(void *data, int size) { int r; - r = read(input_fd, data, size); - if (r != size) + r = do_read(input_fd, data, size); + if (r <= 0) die("reading input file (size expected=%d received=%d)", size, r); + + if (calc_data_size) + calc_data_size += r; + return r; } +/* If it fails, the next read will report it */ +static void skip(int size) +{ + char buf[BUFSIZ]; + int r; + + while (size) { + r = size > BUFSIZ ? BUFSIZ : size; + read_or_die(buf, r); + size -= r; + }; +} + static unsigned int read4(void) { unsigned int data; @@ -82,57 +126,36 @@ static char *read_string(void) char buf[BUFSIZ]; char *str = NULL; int size = 0; - int i; - int r; + off_t r; + char c; for (;;) { - r = read(input_fd, buf, BUFSIZ); + r = read(input_fd, &c, 1); if (r < 0) die("reading input file"); if (!r) die("no data"); - for (i = 0; i < r; i++) { - if (!buf[i]) - break; - } - if (i < r) - break; + if (repipe) { + int retw = write(STDOUT_FILENO, &c, 1); - if (str) { - size += BUFSIZ; - str = realloc(str, size); - if (!str) - die("malloc of size %d", size); - memcpy(str + (size - BUFSIZ), buf, BUFSIZ); - } else { - size = BUFSIZ; - str = malloc_or_die(size); - memcpy(str, buf, size); + if (retw <= 0 || retw != r) + die("repiping input file string"); } - } - /* trailing \0: */ - i++; - - /* move the file descriptor to the end of the string */ - r = lseek(input_fd, -(r - i), SEEK_CUR); - if (r < 0) - die("lseek"); - - if (str) { - size += i; - str = realloc(str, size); - if (!str) - die("malloc of size %d", size); - memcpy(str + (size - i), buf, i); - } else { - size = i; - str = malloc_or_die(i); - memcpy(str, buf, i); + buf[size++] = c; + + if (!c) + break; } + if (calc_data_size) + calc_data_size += size; + + str = malloc_or_die(size); + memcpy(str, buf, size); + return str; } @@ -174,7 +197,6 @@ static void read_ftrace_printk(void) static void read_header_files(void) { unsigned long long size; - char *header_page; char *header_event; char buf[BUFSIZ]; @@ -184,10 +206,7 @@ static void read_header_files(void) die("did not read header page"); size = read8(); - header_page = malloc_or_die(size); - read_or_die(header_page, size); - parse_header_page(header_page, size); - free(header_page); + skip(size); /* * The size field in the page is of type long, @@ -282,8 +301,8 @@ static void update_cpu_data_index(int cpu) static void get_next_page(int cpu) { - off64_t save_seek; - off64_t ret; + off_t save_seek; + off_t ret; if (!cpu_data[cpu].page) return; @@ -298,17 +317,17 @@ static void get_next_page(int cpu) update_cpu_data_index(cpu); /* other parts of the code may expect the pointer to not move */ - save_seek = lseek64(input_fd, 0, SEEK_CUR); + save_seek = lseek(input_fd, 0, SEEK_CUR); - ret = lseek64(input_fd, cpu_data[cpu].offset, SEEK_SET); - if (ret < 0) + ret = lseek(input_fd, cpu_data[cpu].offset, SEEK_SET); + if (ret == (off_t)-1) die("failed to lseek"); ret = read(input_fd, cpu_data[cpu].page, page_size); if (ret < 0) die("failed to read page"); /* reset the file pointer back */ - lseek64(input_fd, save_seek, SEEK_SET); + lseek(input_fd, save_seek, SEEK_SET); return; } @@ -459,7 +478,7 @@ struct record *trace_read_data(int cpu) return data; } -void trace_report(int fd) +ssize_t trace_report(int fd, bool __repipe) { char buf[BUFSIZ]; char test[] = { 23, 8, 68 }; @@ -467,6 +486,10 @@ void trace_report(int fd) int show_version = 0; int show_funcs = 0; int show_printk = 0; + ssize_t size; + + calc_data_size = 1; + repipe = __repipe; input_fd = fd; @@ -499,14 +522,18 @@ void trace_report(int fd) read_proc_kallsyms(); read_ftrace_printk(); + size = calc_data_size - 1; + calc_data_size = 0; + repipe = false; + if (show_funcs) { print_funcs(); - return; + return size; } if (show_printk) { print_printk(); - return; + return size; } - return; + return size; } diff --git a/tools/perf/util/trace-event-scripting.c b/tools/perf/util/trace-event-scripting.c new file mode 100644 index 000000000000..7ea983acfaea --- /dev/null +++ b/tools/perf/util/trace-event-scripting.c @@ -0,0 +1,167 @@ +/* + * trace-event-scripting. Scripting engine common and initialization code. + * + * Copyright (C) 2009-2010 Tom Zanussi <tzanussi@gmail.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <ctype.h> +#include <errno.h> + +#include "../perf.h" +#include "util.h" +#include "trace-event.h" + +struct scripting_context *scripting_context; + +static int stop_script_unsupported(void) +{ + return 0; +} + +static void process_event_unsupported(int cpu __unused, + void *data __unused, + int size __unused, + unsigned long long nsecs __unused, + char *comm __unused) +{ +} + +static void print_python_unsupported_msg(void) +{ + fprintf(stderr, "Python scripting not supported." + " Install libpython and rebuild perf to enable it.\n" + "For example:\n # apt-get install python-dev (ubuntu)" + "\n # yum install python-devel (Fedora)" + "\n etc.\n"); +} + +static int python_start_script_unsupported(const char *script __unused, + int argc __unused, + const char **argv __unused) +{ + print_python_unsupported_msg(); + + return -1; +} + +static int python_generate_script_unsupported(const char *outfile __unused) +{ + print_python_unsupported_msg(); + + return -1; +} + +struct scripting_ops python_scripting_unsupported_ops = { + .name = "Python", + .start_script = python_start_script_unsupported, + .stop_script = stop_script_unsupported, + .process_event = process_event_unsupported, + .generate_script = python_generate_script_unsupported, +}; + +static void register_python_scripting(struct scripting_ops *scripting_ops) +{ + int err; + err = script_spec_register("Python", scripting_ops); + if (err) + die("error registering Python script extension"); + + err = script_spec_register("py", scripting_ops); + if (err) + die("error registering py script extension"); + + scripting_context = malloc(sizeof(struct scripting_context)); +} + +#ifdef NO_LIBPYTHON +void setup_python_scripting(void) +{ + register_python_scripting(&python_scripting_unsupported_ops); +} +#else +struct scripting_ops python_scripting_ops; + +void setup_python_scripting(void) +{ + register_python_scripting(&python_scripting_ops); +} +#endif + +static void print_perl_unsupported_msg(void) +{ + fprintf(stderr, "Perl scripting not supported." + " Install libperl and rebuild perf to enable it.\n" + "For example:\n # apt-get install libperl-dev (ubuntu)" + "\n # yum install 'perl(ExtUtils::Embed)' (Fedora)" + "\n etc.\n"); +} + +static int perl_start_script_unsupported(const char *script __unused, + int argc __unused, + const char **argv __unused) +{ + print_perl_unsupported_msg(); + + return -1; +} + +static int perl_generate_script_unsupported(const char *outfile __unused) +{ + print_perl_unsupported_msg(); + + return -1; +} + +struct scripting_ops perl_scripting_unsupported_ops = { + .name = "Perl", + .start_script = perl_start_script_unsupported, + .stop_script = stop_script_unsupported, + .process_event = process_event_unsupported, + .generate_script = perl_generate_script_unsupported, +}; + +static void register_perl_scripting(struct scripting_ops *scripting_ops) +{ + int err; + err = script_spec_register("Perl", scripting_ops); + if (err) + die("error registering Perl script extension"); + + err = script_spec_register("pl", scripting_ops); + if (err) + die("error registering pl script extension"); + + scripting_context = malloc(sizeof(struct scripting_context)); +} + +#ifdef NO_LIBPERL +void setup_perl_scripting(void) +{ + register_perl_scripting(&perl_scripting_unsupported_ops); +} +#else +struct scripting_ops perl_scripting_ops; + +void setup_perl_scripting(void) +{ + register_perl_scripting(&perl_scripting_ops); +} +#endif diff --git a/tools/perf/util/trace-event.h b/tools/perf/util/trace-event.h index 6ad405620c9b..b3e86b1e4444 100644 --- a/tools/perf/util/trace-event.h +++ b/tools/perf/util/trace-event.h @@ -1,6 +1,7 @@ #ifndef __PERF_TRACE_EVENTS_H #define __PERF_TRACE_EVENTS_H +#include <stdbool.h> #include "parse-events.h" #define __unused __attribute__((unused)) @@ -162,7 +163,7 @@ struct record *trace_read_data(int cpu); void parse_set_info(int nr_cpus, int long_sz); -void trace_report(int fd); +ssize_t trace_report(int fd, bool repipe); void *malloc_or_die(unsigned int size); @@ -232,7 +233,12 @@ static inline unsigned long long __data2host8(unsigned long long data) #define data2host2(ptr) __data2host2(*(unsigned short *)ptr) #define data2host4(ptr) __data2host4(*(unsigned int *)ptr) -#define data2host8(ptr) __data2host8(*(unsigned long long *)ptr) +#define data2host8(ptr) ({ \ + unsigned long long __val; \ + \ + memcpy(&__val, (ptr), sizeof(unsigned long long)); \ + __data2host8(__val); \ +}) extern int header_page_ts_offset; extern int header_page_ts_size; @@ -241,9 +247,8 @@ extern int header_page_size_size; extern int header_page_data_offset; extern int header_page_data_size; -extern int latency_format; +extern bool latency_format; -int parse_header_page(char *buf, unsigned long size); int trace_parse_common_type(void *data); int trace_parse_common_pid(void *data); int parse_common_pc(void *data); @@ -258,6 +263,8 @@ void *raw_field_ptr(struct event *event, const char *name, void *data); unsigned long long eval_flag(const char *flag); int read_tracing_data(int fd, struct perf_event_attr *pattrs, int nb_events); +ssize_t read_tracing_data_size(int fd, struct perf_event_attr *pattrs, + int nb_events); /* taken from kernel/trace/trace.h */ enum trace_flag_type { @@ -279,7 +286,15 @@ struct scripting_ops { int script_spec_register(const char *spec, struct scripting_ops *ops); -extern struct scripting_ops perl_scripting_ops; void setup_perl_scripting(void); +void setup_python_scripting(void); + +struct scripting_context { + void *event_data; +}; + +int common_pc(struct scripting_context *context); +int common_flags(struct scripting_context *context); +int common_lock_depth(struct scripting_context *context); #endif /* __PERF_TRACE_EVENTS_H */ diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c new file mode 100644 index 000000000000..214265674ddd --- /dev/null +++ b/tools/perf/util/util.c @@ -0,0 +1,116 @@ +#include "util.h" +#include <sys/mman.h> + +int mkdir_p(char *path, mode_t mode) +{ + struct stat st; + int err; + char *d = path; + + if (*d != '/') + return -1; + + if (stat(path, &st) == 0) + return 0; + + while (*++d == '/'); + + while ((d = strchr(d, '/'))) { + *d = '\0'; + err = stat(path, &st) && mkdir(path, mode); + *d++ = '/'; + if (err) + return -1; + while (*d == '/') + ++d; + } + return (stat(path, &st) && mkdir(path, mode)) ? -1 : 0; +} + +static int slow_copyfile(const char *from, const char *to) +{ + int err = 0; + char *line = NULL; + size_t n; + FILE *from_fp = fopen(from, "r"), *to_fp; + + if (from_fp == NULL) + goto out; + + to_fp = fopen(to, "w"); + if (to_fp == NULL) + goto out_fclose_from; + + while (getline(&line, &n, from_fp) > 0) + if (fputs(line, to_fp) == EOF) + goto out_fclose_to; + err = 0; +out_fclose_to: + fclose(to_fp); + free(line); +out_fclose_from: + fclose(from_fp); +out: + return err; +} + +int copyfile(const char *from, const char *to) +{ + int fromfd, tofd; + struct stat st; + void *addr; + int err = -1; + + if (stat(from, &st)) + goto out; + + if (st.st_size == 0) /* /proc? do it slowly... */ + return slow_copyfile(from, to); + + fromfd = open(from, O_RDONLY); + if (fromfd < 0) + goto out; + + tofd = creat(to, 0755); + if (tofd < 0) + goto out_close_from; + + addr = mmap(NULL, st.st_size, PROT_READ, MAP_PRIVATE, fromfd, 0); + if (addr == MAP_FAILED) + goto out_close_to; + + if (write(tofd, addr, st.st_size) == st.st_size) + err = 0; + + munmap(addr, st.st_size); +out_close_to: + close(tofd); + if (err) + unlink(to); +out_close_from: + close(fromfd); +out: + return err; +} + +unsigned long convert_unit(unsigned long value, char *unit) +{ + *unit = ' '; + + if (value > 1000) { + value /= 1000; + *unit = 'K'; + } + + if (value > 1000) { + value /= 1000; + *unit = 'M'; + } + + if (value > 1000) { + value /= 1000; + *unit = 'G'; + } + + return value; +} diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h index c673d8825883..4e8b6b0c551c 100644 --- a/tools/perf/util/util.h +++ b/tools/perf/util/util.h @@ -42,12 +42,14 @@ #define _ALL_SOURCE 1 #define _GNU_SOURCE 1 #define _BSD_SOURCE 1 +#define HAS_BOOL #include <unistd.h> #include <stdio.h> #include <sys/stat.h> #include <sys/statfs.h> #include <fcntl.h> +#include <stdbool.h> #include <stddef.h> #include <stdlib.h> #include <stdarg.h> @@ -78,7 +80,8 @@ #include <pwd.h> #include <inttypes.h> #include "../../../include/linux/magic.h" - +#include "types.h" +#include <sys/ttydefaults.h> #ifndef NO_ICONV #include <iconv.h> @@ -149,7 +152,6 @@ extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2))) extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN); extern int prefixcmp(const char *str, const char *prefix); -extern time_t tm_to_time_t(const struct tm *tm); static inline const char *skip_prefix(const char *str, const char *prefix) { @@ -157,119 +159,6 @@ static inline const char *skip_prefix(const char *str, const char *prefix) return strncmp(str, prefix, len) ? NULL : str + len; } -#if defined(NO_MMAP) || defined(USE_WIN32_MMAP) - -#ifndef PROT_READ -#define PROT_READ 1 -#define PROT_WRITE 2 -#define MAP_PRIVATE 1 -#define MAP_FAILED ((void*)-1) -#endif - -#define mmap git_mmap -#define munmap git_munmap -extern void *git_mmap(void *start, size_t length, int prot, int flags, int fd, off_t offset); -extern int git_munmap(void *start, size_t length); - -#else /* NO_MMAP || USE_WIN32_MMAP */ - -#include <sys/mman.h> - -#endif /* NO_MMAP || USE_WIN32_MMAP */ - -#ifdef NO_MMAP - -/* This value must be multiple of (pagesize * 2) */ -#define DEFAULT_PACKED_GIT_WINDOW_SIZE (1 * 1024 * 1024) - -#else /* NO_MMAP */ - -/* This value must be multiple of (pagesize * 2) */ -#define DEFAULT_PACKED_GIT_WINDOW_SIZE \ - (sizeof(void*) >= 8 \ - ? 1 * 1024 * 1024 * 1024 \ - : 32 * 1024 * 1024) - -#endif /* NO_MMAP */ - -#ifdef NO_ST_BLOCKS_IN_STRUCT_STAT -#define on_disk_bytes(st) ((st).st_size) -#else -#define on_disk_bytes(st) ((st).st_blocks * 512) -#endif - -#define DEFAULT_PACKED_GIT_LIMIT \ - ((1024L * 1024L) * (sizeof(void*) >= 8 ? 8192 : 256)) - -#ifdef NO_PREAD -#define pread git_pread -extern ssize_t git_pread(int fd, void *buf, size_t count, off_t offset); -#endif -/* - * Forward decl that will remind us if its twin in cache.h changes. - * This function is used in compat/pread.c. But we can't include - * cache.h there. - */ -extern ssize_t read_in_full(int fd, void *buf, size_t count); - -#ifdef NO_SETENV -#define setenv gitsetenv -extern int gitsetenv(const char *, const char *, int); -#endif - -#ifdef NO_MKDTEMP -#define mkdtemp gitmkdtemp -extern char *gitmkdtemp(char *); -#endif - -#ifdef NO_UNSETENV -#define unsetenv gitunsetenv -extern void gitunsetenv(const char *); -#endif - -#ifdef NO_STRCASESTR -#define strcasestr gitstrcasestr -extern char *gitstrcasestr(const char *haystack, const char *needle); -#endif - -#ifdef NO_STRLCPY -#define strlcpy gitstrlcpy -extern size_t gitstrlcpy(char *, const char *, size_t); -#endif - -#ifdef NO_STRTOUMAX -#define strtoumax gitstrtoumax -extern uintmax_t gitstrtoumax(const char *, char **, int); -#endif - -#ifdef NO_HSTRERROR -#define hstrerror githstrerror -extern const char *githstrerror(int herror); -#endif - -#ifdef NO_MEMMEM -#define memmem gitmemmem -void *gitmemmem(const void *haystack, size_t haystacklen, - const void *needle, size_t needlelen); -#endif - -#ifdef FREAD_READS_DIRECTORIES -#ifdef fopen -#undef fopen -#endif -#define fopen(a,b) git_fopen(a,b) -extern FILE *git_fopen(const char*, const char*); -#endif - -#ifdef SNPRINTF_RETURNS_BOGUS -#define snprintf git_snprintf -extern int git_snprintf(char *str, size_t maxsize, - const char *format, ...); -#define vsnprintf git_vsnprintf -extern int git_vsnprintf(char *str, size_t maxsize, - const char *format, va_list ap); -#endif - #ifdef __GLIBC_PREREQ #if __GLIBC_PREREQ(2, 1) #define HAVE_STRCHRNUL @@ -290,25 +179,19 @@ static inline char *gitstrchrnul(const char *s, int c) * Wrappers: */ extern char *xstrdup(const char *str); -extern void *xmalloc(size_t size) __attribute__((weak)); -extern void *xmemdupz(const void *data, size_t len); -extern char *xstrndup(const char *str, size_t len); extern void *xrealloc(void *ptr, size_t size) __attribute__((weak)); + static inline void *zalloc(size_t size) { return calloc(1, size); } -static inline size_t xsize_t(off_t len) -{ - return (size_t)len; -} - static inline int has_extension(const char *filename, const char *ext) { size_t len = strlen(filename); size_t extlen = strlen(ext); + return len > extlen && !memcmp(filename + len - extlen, ext, extlen); } @@ -322,6 +205,7 @@ static inline int has_extension(const char *filename, const char *ext) #undef isalnum #undef tolower #undef toupper + extern unsigned char sane_ctype[256]; #define GIT_SPACE 0x01 #define GIT_DIGIT 0x02 @@ -339,8 +223,6 @@ extern unsigned char sane_ctype[256]; #define isalpha(x) sane_istest(x,GIT_ALPHA) #define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT) #define isprint(x) sane_istest(x,GIT_PRINT) -#define is_glob_special(x) sane_istest(x,GIT_GLOB_SPECIAL) -#define is_regex_special(x) sane_istest(x,GIT_GLOB_SPECIAL | GIT_REGEX_SPECIAL) #define tolower(x) sane_case((unsigned char)(x), 0x20) #define toupper(x) sane_case((unsigned char)(x), 0) @@ -351,38 +233,6 @@ static inline int sane_case(int x, int high) return x; } -static inline int strtoul_ui(char const *s, int base, unsigned int *result) -{ - unsigned long ul; - char *p; - - errno = 0; - ul = strtoul(s, &p, base); - if (errno || *p || p == s || (unsigned int) ul != ul) - return -1; - *result = ul; - return 0; -} - -static inline int strtol_i(char const *s, int base, int *result) -{ - long ul; - char *p; - - errno = 0; - ul = strtol(s, &p, base); - if (errno || *p || p == s || (int) ul != ul) - return -1; - *result = ul; - return 0; -} - -#ifdef INTERNAL_QSORT -void git_qsort(void *base, size_t nmemb, size_t size, - int(*compar)(const void *, const void *)); -#define qsort git_qsort -#endif - #ifndef DIR_HAS_BSD_GROUP_SEMANTICS # define FORCE_DIR_SET_GID S_ISGID #else @@ -403,4 +253,30 @@ void git_qsort(void *base, size_t nmemb, size_t size, #endif #endif +int mkdir_p(char *path, mode_t mode); +int copyfile(const char *from, const char *to); + +s64 perf_atoll(const char *str); +char **argv_split(const char *str, int *argcp); +void argv_free(char **argv); +bool strglobmatch(const char *str, const char *pat); +bool strlazymatch(const char *str, const char *pat); +unsigned long convert_unit(unsigned long value, char *unit); + +#ifndef ESC +#define ESC 27 +#endif + +static inline bool is_exit_key(int key) +{ + char up; + if (key == CTRL('c') || key == ESC) + return true; + up = toupper(key); + return up == 'Q'; +} + +#define _STR(x) #x +#define STR(x) _STR(x) + #endif diff --git a/tools/perf/util/values.c b/tools/perf/util/values.c index 1c15e39f99e3..cfa55d686e3b 100644 --- a/tools/perf/util/values.c +++ b/tools/perf/util/values.c @@ -169,6 +169,7 @@ static void perf_read_values__display_pretty(FILE *fp, counterwidth[j], values->value[i][j]); fprintf(fp, "\n"); } + free(counterwidth); } static void perf_read_values__display_raw(FILE *fp, diff --git a/tools/perf/util/wrapper.c b/tools/perf/util/wrapper.c index bf44ca85d23b..73e900edb5a2 100644 --- a/tools/perf/util/wrapper.c +++ b/tools/perf/util/wrapper.c @@ -23,46 +23,6 @@ char *xstrdup(const char *str) return ret; } -void *xmalloc(size_t size) -{ - void *ret = malloc(size); - if (!ret && !size) - ret = malloc(1); - if (!ret) { - release_pack_memory(size, -1); - ret = malloc(size); - if (!ret && !size) - ret = malloc(1); - if (!ret) - die("Out of memory, malloc failed"); - } -#ifdef XMALLOC_POISON - memset(ret, 0xA5, size); -#endif - return ret; -} - -/* - * xmemdupz() allocates (len + 1) bytes of memory, duplicates "len" bytes of - * "data" to the allocated memory, zero terminates the allocated memory, - * and returns a pointer to the allocated memory. If the allocation fails, - * the program dies. - */ -void *xmemdupz(const void *data, size_t len) -{ - char *p = xmalloc(len + 1); - memcpy(p, data, len); - p[len] = '\0'; - return p; -} - -char *xstrndup(const char *str, size_t len) -{ - char *p = memchr(str, '\0', len); - - return xmemdupz(str, p ? (size_t)(p - str) : len); -} - void *xrealloc(void *ptr, size_t size) { void *ret = realloc(ptr, size); @@ -78,73 +38,3 @@ void *xrealloc(void *ptr, size_t size) } return ret; } - -/* - * xread() is the same a read(), but it automatically restarts read() - * operations with a recoverable error (EAGAIN and EINTR). xread() - * DOES NOT GUARANTEE that "len" bytes is read even if the data is available. - */ -static ssize_t xread(int fd, void *buf, size_t len) -{ - ssize_t nr; - while (1) { - nr = read(fd, buf, len); - if ((nr < 0) && (errno == EAGAIN || errno == EINTR)) - continue; - return nr; - } -} - -/* - * xwrite() is the same a write(), but it automatically restarts write() - * operations with a recoverable error (EAGAIN and EINTR). xwrite() DOES NOT - * GUARANTEE that "len" bytes is written even if the operation is successful. - */ -static ssize_t xwrite(int fd, const void *buf, size_t len) -{ - ssize_t nr; - while (1) { - nr = write(fd, buf, len); - if ((nr < 0) && (errno == EAGAIN || errno == EINTR)) - continue; - return nr; - } -} - -ssize_t read_in_full(int fd, void *buf, size_t count) -{ - char *p = buf; - ssize_t total = 0; - - while (count > 0) { - ssize_t loaded = xread(fd, p, count); - if (loaded <= 0) - return total ? total : loaded; - count -= loaded; - p += loaded; - total += loaded; - } - - return total; -} - -ssize_t write_in_full(int fd, const void *buf, size_t count) -{ - const char *p = buf; - ssize_t total = 0; - - while (count > 0) { - ssize_t written = xwrite(fd, p, count); - if (written < 0) - return -1; - if (!written) { - errno = ENOSPC; - return -1; - } - count -= written; - p += written; - total += written; - } - - return total; -} |
