diff options
| -rw-r--r-- | tools/perf/builtin-probe.c | 126 | ||||
| -rw-r--r-- | tools/perf/util/probe-event.c | 137 | ||||
| -rw-r--r-- | tools/perf/util/probe-event.h | 2 |
3 files changed, 139 insertions, 126 deletions
diff --git a/tools/perf/builtin-probe.c b/tools/perf/builtin-probe.c index b6afe7b344dd..2087034782ff 100644 --- a/tools/perf/builtin-probe.c +++ b/tools/perf/builtin-probe.c @@ -36,11 +36,9 @@ #include "builtin.h" #include "util/util.h" #include "util/strlist.h" -#include "util/event.h" +#include "util/symbol.h" #include "util/debug.h" #include "util/debugfs.h" -#include "util/symbol.h" -#include "util/thread.h" #include "util/parse-options.h" #include "util/parse-events.h" /* For debugfs_path */ #include "util/probe-finder.h" @@ -57,8 +55,6 @@ static struct { int nr_probe; struct probe_point probes[MAX_PROBES]; struct strlist *dellist; - struct map_groups kmap_groups; - struct map *kmaps[MAP__NR_TYPES]; struct line_range line_range; } session; @@ -114,29 +110,7 @@ static int opt_del_probe_event(const struct option *opt __used, return 0; } -/* Currently just checking function name from symbol map */ -static void evaluate_probe_point(struct probe_point *pp) -{ - struct symbol *sym; - sym = map__find_symbol_by_name(session.kmaps[MAP__FUNCTION], - pp->function, NULL); - if (!sym) - die("Kernel symbol \'%s\' not found - probe not added.", - pp->function); -} - #ifndef NO_DWARF_SUPPORT -static int open_vmlinux(void) -{ - if (map__load(session.kmaps[MAP__FUNCTION], NULL) < 0) { - pr_debug("Failed to load kernel map.\n"); - return -EINVAL; - } - pr_debug("Try to open %s\n", - session.kmaps[MAP__FUNCTION]->dso->long_name); - return open(session.kmaps[MAP__FUNCTION]->dso->long_name, O_RDONLY); -} - static int opt_show_lines(const struct option *opt __used, const char *str, int unset __used) { @@ -204,31 +178,8 @@ static const struct option options[] = { OPT_END() }; -/* Initialize symbol maps for vmlinux */ -static void init_vmlinux(void) -{ - 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); - if (symbol__init() < 0) - die("Failed to init symbol map."); - - map_groups__init(&session.kmap_groups); - if (map_groups__create_kernel_maps(&session.kmap_groups, - session.kmaps) < 0) - die("Failed to create kernel maps."); -} - int cmd_probe(int argc, const char **argv, const char *prefix __used) { - int i, ret; -#ifndef NO_DWARF_SUPPORT - int fd; -#endif - struct probe_point *pp; - argc = parse_options(argc, argv, options, probe_usage, PARSE_OPT_STOP_AT_NON_OPTION); if (argc > 0) { @@ -267,14 +218,7 @@ int cmd_probe(int argc, const char **argv, const char *prefix __used) " --add/--del.\n"); usage_with_options(probe_usage, options); } - init_vmlinux(); - fd = open_vmlinux(); - if (fd < 0) - die("Could not open debuginfo file."); - ret = find_line_range(fd, &session.line_range); - if (ret <= 0) - die("Source line is not found.\n"); - close(fd); + show_line_range(&session.line_range); return 0; } @@ -287,72 +231,8 @@ int cmd_probe(int argc, const char **argv, const char *prefix __used) return 0; } - /* Add probes */ - init_vmlinux(); - - if (session.need_dwarf) -#ifdef NO_DWARF_SUPPORT - die("Debuginfo-analysis is not supported"); -#else /* !NO_DWARF_SUPPORT */ - pr_debug("Some probes require debuginfo.\n"); - - fd = open_vmlinux(); - if (fd < 0) { - if (session.need_dwarf) - die("Could not open debuginfo file."); - - pr_debug("Could not open vmlinux/module file." - " Try to use symbols.\n"); - goto end_dwarf; - } - - /* Searching probe points */ - for (i = 0; i < session.nr_probe; i++) { - pp = &session.probes[i]; - if (pp->found) - continue; - - lseek(fd, SEEK_SET, 0); - ret = find_probe_point(fd, pp); - if (ret > 0) - continue; - if (ret == 0) { /* No error but failed to find probe point. */ - synthesize_perf_probe_point(pp); - die("Probe point '%s' not found. - probe not added.", - pp->probes[0]); - } - /* Error path */ - if (session.need_dwarf) { - if (ret == -ENOENT) - pr_warning("No dwarf info found in the vmlinux - please rebuild with CONFIG_DEBUG_INFO=y.\n"); - die("Could not analyze debuginfo."); - } - pr_debug("An error occurred in debuginfo analysis." - " Try to use symbols.\n"); - break; - } - close(fd); - -end_dwarf: -#endif /* !NO_DWARF_SUPPORT */ - - /* Synthesize probes without dwarf */ - for (i = 0; i < session.nr_probe; i++) { - pp = &session.probes[i]; - if (pp->found) /* This probe is already found. */ - continue; - - evaluate_probe_point(pp); - ret = synthesize_trace_kprobe_event(pp); - if (ret == -E2BIG) - die("probe point definition becomes too long."); - else if (ret < 0) - die("Failed to synthesize a probe point."); - } - - /* Settng up probe points */ add_trace_kprobe_events(session.probes, session.nr_probe, - session.force_add); + session.force_add, session.need_dwarf); return 0; } diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c index 88a3b6d75c7c..1e60a659578b 100644 --- a/tools/perf/util/probe-event.c +++ b/tools/perf/util/probe-event.c @@ -40,6 +40,8 @@ #include "debug.h" #include "cache.h" #include "color.h" +#include "symbol.h" +#include "thread.h" #include "parse-events.h" /* For debugfs_path */ #include "probe-event.h" @@ -65,6 +67,38 @@ static int e_snprintf(char *str, size_t size, const char *format, ...) return ret; } + +static struct map_groups kmap_groups; +static struct map *kmaps[MAP__NR_TYPES]; + +/* Initialize symbol maps for vmlinux */ +static void init_vmlinux(void) +{ + 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); + if (symbol__init() < 0) + die("Failed to init symbol map."); + + map_groups__init(&kmap_groups); + if (map_groups__create_kernel_maps(&kmap_groups, kmaps) < 0) + die("Failed to create kernel maps."); +} + +#ifndef NO_DWARF_SUPPORT +static int open_vmlinux(void) +{ + if (map__load(kmaps[MAP__FUNCTION], NULL) < 0) { + pr_debug("Failed to load kernel map.\n"); + return -EINVAL; + } + pr_debug("Try to open %s\n", kmaps[MAP__FUNCTION]->dso->long_name); + return open(kmaps[MAP__FUNCTION]->dso->long_name, O_RDONLY); +} +#endif + void parse_line_range_desc(const char *arg, struct line_range *lr) { const char *ptr; @@ -586,8 +620,8 @@ static void get_new_event_name(char *buf, size_t len, const char *base, die("Too many events are on the same function."); } -void add_trace_kprobe_events(struct probe_point *probes, int nr_probes, - bool force_add) +static void __add_trace_kprobe_events(struct probe_point *probes, + int nr_probes, bool force_add) { int i, j, fd; struct probe_point *pp; @@ -640,6 +674,92 @@ void add_trace_kprobe_events(struct probe_point *probes, int nr_probes, close(fd); } +/* Currently just checking function name from symbol map */ +static void evaluate_probe_point(struct probe_point *pp) +{ + struct symbol *sym; + sym = map__find_symbol_by_name(kmaps[MAP__FUNCTION], + pp->function, NULL); + if (!sym) + die("Kernel symbol \'%s\' not found - probe not added.", + pp->function); +} + +void add_trace_kprobe_events(struct probe_point *probes, int nr_probes, + bool force_add, bool need_dwarf) +{ + int i, ret; + struct probe_point *pp; +#ifndef NO_DWARF_SUPPORT + int fd; +#endif + /* Add probes */ + init_vmlinux(); + + if (need_dwarf) +#ifdef NO_DWARF_SUPPORT + die("Debuginfo-analysis is not supported"); +#else /* !NO_DWARF_SUPPORT */ + pr_debug("Some probes require debuginfo.\n"); + + fd = open_vmlinux(); + if (fd < 0) { + if (need_dwarf) + die("Could not open debuginfo file."); + + pr_debug("Could not open vmlinux/module file." + " Try to use symbols.\n"); + goto end_dwarf; + } + + /* Searching probe points */ + for (i = 0; i < nr_probes; i++) { + pp = &probes[i]; + if (pp->found) + continue; + + lseek(fd, SEEK_SET, 0); + ret = find_probe_point(fd, pp); + if (ret > 0) + continue; + if (ret == 0) { /* No error but failed to find probe point. */ + synthesize_perf_probe_point(pp); + die("Probe point '%s' not found. - probe not added.", + pp->probes[0]); + } + /* Error path */ + if (need_dwarf) { + if (ret == -ENOENT) + pr_warning("No dwarf info found in the vmlinux - please rebuild with CONFIG_DEBUG_INFO=y.\n"); + die("Could not analyze debuginfo."); + } + pr_debug("An error occurred in debuginfo analysis." + " Try to use symbols.\n"); + break; + } + close(fd); + +end_dwarf: +#endif /* !NO_DWARF_SUPPORT */ + + /* Synthesize probes without dwarf */ + for (i = 0; i < nr_probes; i++) { + pp = &probes[i]; + if (pp->found) /* This probe is already found. */ + continue; + + evaluate_probe_point(pp); + ret = synthesize_trace_kprobe_event(pp); + if (ret == -E2BIG) + die("probe point definition becomes too long."); + else if (ret < 0) + die("Failed to synthesize a probe point."); + } + + /* Settng up probe points */ + __add_trace_kprobe_events(probes, nr_probes, force_add); +} + static void __del_trace_kprobe_event(int fd, struct str_node *ent) { char *p; @@ -759,6 +879,17 @@ void show_line_range(struct line_range *lr) unsigned int l = 1; struct line_node *ln; FILE *fp; + int fd, ret; + + /* Search a line range */ + init_vmlinux(); + fd = open_vmlinux(); + if (fd < 0) + die("Could not open debuginfo file."); + ret = find_line_range(fd, lr); + if (ret <= 0) + die("Source line is not found.\n"); + close(fd); setup_pager(); @@ -788,3 +919,5 @@ void show_line_range(struct line_range *lr) fclose(fp); } + + diff --git a/tools/perf/util/probe-event.h b/tools/perf/util/probe-event.h index 711287d4baea..3865e163bb59 100644 --- a/tools/perf/util/probe-event.h +++ b/tools/perf/util/probe-event.h @@ -13,7 +13,7 @@ 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); + bool force_add, bool need_dwarf); extern void del_trace_kprobe_events(struct strlist *dellist); extern void show_perf_probe_events(void); extern void show_line_range(struct line_range *lr); |
