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-rw-r--r--tools/perf/util/config.c300
1 files changed, 257 insertions, 43 deletions
diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c
index 4e727635476e..18dae745034f 100644
--- a/tools/perf/util/config.c
+++ b/tools/perf/util/config.c
@@ -13,6 +13,7 @@
#include <subcmd/exec-cmd.h>
#include "util/hist.h" /* perf_hist_config */
#include "util/llvm-utils.h" /* perf_llvm_config */
+#include "config.h"
#define MAXNAME (256)
@@ -25,6 +26,7 @@ static FILE *config_file;
static const char *config_file_name;
static int config_linenr;
static int config_file_eof;
+static struct perf_config_set *config_set;
const char *config_exclusive_filename;
@@ -274,7 +276,8 @@ static int perf_parse_file(config_fn_t fn, void *data)
break;
}
}
- die("bad config file line %d in %s", config_linenr, config_file_name);
+ pr_err("bad config file line %d in %s\n", config_linenr, config_file_name);
+ return -1;
}
static int parse_unit_factor(const char *end, unsigned long *val)
@@ -370,13 +373,28 @@ int perf_config_bool(const char *name, const char *value)
return !!perf_config_bool_or_int(name, value, &discard);
}
-const char *perf_config_dirname(const char *name, const char *value)
+static const char *perf_config_dirname(const char *name, const char *value)
{
if (!name)
return NULL;
return value;
}
+static int perf_buildid_config(const char *var, const char *value)
+{
+ /* same dir for all commands */
+ if (!strcmp(var, "buildid.dir")) {
+ const char *dir = perf_config_dirname(var, value);
+
+ if (!dir)
+ return -1;
+ strncpy(buildid_dir, dir, MAXPATHLEN-1);
+ buildid_dir[MAXPATHLEN-1] = '\0';
+ }
+
+ return 0;
+}
+
static int perf_default_core_config(const char *var __maybe_unused,
const char *value __maybe_unused)
{
@@ -412,6 +430,9 @@ int perf_default_config(const char *var, const char *value,
if (!prefixcmp(var, "llvm."))
return perf_llvm_config(var, value);
+ if (!prefixcmp(var, "buildid."))
+ return perf_buildid_config(var, value);
+
/* Add other config variables here. */
return 0;
}
@@ -458,18 +479,140 @@ static int perf_config_global(void)
return !perf_env_bool("PERF_CONFIG_NOGLOBAL", 0);
}
-int perf_config(config_fn_t fn, void *data)
+static struct perf_config_section *find_section(struct list_head *sections,
+ const char *section_name)
+{
+ struct perf_config_section *section;
+
+ list_for_each_entry(section, sections, node)
+ if (!strcmp(section->name, section_name))
+ return section;
+
+ return NULL;
+}
+
+static struct perf_config_item *find_config_item(const char *name,
+ struct perf_config_section *section)
+{
+ struct perf_config_item *item;
+
+ list_for_each_entry(item, &section->items, node)
+ if (!strcmp(item->name, name))
+ return item;
+
+ return NULL;
+}
+
+static struct perf_config_section *add_section(struct list_head *sections,
+ const char *section_name)
+{
+ struct perf_config_section *section = zalloc(sizeof(*section));
+
+ if (!section)
+ return NULL;
+
+ INIT_LIST_HEAD(&section->items);
+ section->name = strdup(section_name);
+ if (!section->name) {
+ pr_debug("%s: strdup failed\n", __func__);
+ free(section);
+ return NULL;
+ }
+
+ list_add_tail(&section->node, sections);
+ return section;
+}
+
+static struct perf_config_item *add_config_item(struct perf_config_section *section,
+ const char *name)
+{
+ struct perf_config_item *item = zalloc(sizeof(*item));
+
+ if (!item)
+ return NULL;
+
+ item->name = strdup(name);
+ if (!item->name) {
+ pr_debug("%s: strdup failed\n", __func__);
+ free(item);
+ return NULL;
+ }
+
+ list_add_tail(&item->node, &section->items);
+ return item;
+}
+
+static int set_value(struct perf_config_item *item, const char *value)
+{
+ char *val = strdup(value);
+
+ if (!val)
+ return -1;
+
+ zfree(&item->value);
+ item->value = val;
+ return 0;
+}
+
+static int collect_config(const char *var, const char *value,
+ void *perf_config_set)
+{
+ int ret = -1;
+ char *ptr, *key;
+ char *section_name, *name;
+ struct perf_config_section *section = NULL;
+ struct perf_config_item *item = NULL;
+ struct perf_config_set *set = perf_config_set;
+ struct list_head *sections;
+
+ if (set == NULL)
+ return -1;
+
+ sections = &set->sections;
+ key = ptr = strdup(var);
+ if (!key) {
+ pr_debug("%s: strdup failed\n", __func__);
+ return -1;
+ }
+
+ section_name = strsep(&ptr, ".");
+ name = ptr;
+ if (name == NULL || value == NULL)
+ goto out_free;
+
+ section = find_section(sections, section_name);
+ if (!section) {
+ section = add_section(sections, section_name);
+ if (!section)
+ goto out_free;
+ }
+
+ item = find_config_item(name, section);
+ if (!item) {
+ item = add_config_item(section, name);
+ if (!item)
+ goto out_free;
+ }
+
+ ret = set_value(item, value);
+ return ret;
+
+out_free:
+ free(key);
+ return -1;
+}
+
+static int perf_config_set__init(struct perf_config_set *set)
{
- int ret = 0, found = 0;
+ int ret = -1;
const char *home = NULL;
/* Setting $PERF_CONFIG makes perf read _only_ the given config file. */
if (config_exclusive_filename)
- return perf_config_from_file(fn, config_exclusive_filename, data);
+ return perf_config_from_file(collect_config, config_exclusive_filename, set);
if (perf_config_system() && !access(perf_etc_perfconfig(), R_OK)) {
- ret += perf_config_from_file(fn, perf_etc_perfconfig(),
- data);
- found += 1;
+ if (perf_config_from_file(collect_config, perf_etc_perfconfig(), set) < 0)
+ goto out;
}
home = getenv("HOME");
@@ -495,52 +638,126 @@ int perf_config(config_fn_t fn, void *data)
if (!st.st_size)
goto out_free;
- ret += perf_config_from_file(fn, user_config, data);
- found += 1;
+ ret = perf_config_from_file(collect_config, user_config, set);
+
out_free:
free(user_config);
}
out:
- if (found == 0)
+ return ret;
+}
+
+struct perf_config_set *perf_config_set__new(void)
+{
+ struct perf_config_set *set = zalloc(sizeof(*set));
+
+ if (set) {
+ INIT_LIST_HEAD(&set->sections);
+ if (perf_config_set__init(set) < 0) {
+ perf_config_set__delete(set);
+ set = NULL;
+ }
+ }
+
+ return set;
+}
+
+int perf_config(config_fn_t fn, void *data)
+{
+ int ret = 0;
+ char key[BUFSIZ];
+ struct perf_config_section *section;
+ struct perf_config_item *item;
+
+ if (config_set == NULL)
return -1;
+
+ perf_config_set__for_each_entry(config_set, section, item) {
+ char *value = item->value;
+
+ if (value) {
+ scnprintf(key, sizeof(key), "%s.%s",
+ section->name, item->name);
+ ret = fn(key, value, data);
+ if (ret < 0) {
+ pr_err("Error: wrong config key-value pair %s=%s\n",
+ key, value);
+ break;
+ }
+ }
+ }
+
return ret;
}
-/*
- * Call this to report error for your variable that should not
- * get a boolean value (i.e. "[my] var" means "true").
- */
-int config_error_nonbool(const char *var)
+void perf_config__init(void)
{
- return error("Missing value for '%s'", var);
+ if (config_set == NULL)
+ config_set = perf_config_set__new();
}
-struct buildid_dir_config {
- char *dir;
-};
+void perf_config__exit(void)
+{
+ perf_config_set__delete(config_set);
+ config_set = NULL;
+}
-static int buildid_dir_command_config(const char *var, const char *value,
- void *data)
+void perf_config__refresh(void)
{
- struct buildid_dir_config *c = data;
- const char *v;
+ perf_config__exit();
+ perf_config__init();
+}
- /* same dir for all commands */
- if (!strcmp(var, "buildid.dir")) {
- v = perf_config_dirname(var, value);
- if (!v)
- return -1;
- strncpy(c->dir, v, MAXPATHLEN-1);
- c->dir[MAXPATHLEN-1] = '\0';
+static void perf_config_item__delete(struct perf_config_item *item)
+{
+ zfree(&item->name);
+ zfree(&item->value);
+ free(item);
+}
+
+static void perf_config_section__purge(struct perf_config_section *section)
+{
+ struct perf_config_item *item, *tmp;
+
+ list_for_each_entry_safe(item, tmp, &section->items, node) {
+ list_del_init(&item->node);
+ perf_config_item__delete(item);
}
- return 0;
}
-static void check_buildid_dir_config(void)
+static void perf_config_section__delete(struct perf_config_section *section)
+{
+ perf_config_section__purge(section);
+ zfree(&section->name);
+ free(section);
+}
+
+static void perf_config_set__purge(struct perf_config_set *set)
{
- struct buildid_dir_config c;
- c.dir = buildid_dir;
- perf_config(buildid_dir_command_config, &c);
+ struct perf_config_section *section, *tmp;
+
+ list_for_each_entry_safe(section, tmp, &set->sections, node) {
+ list_del_init(&section->node);
+ perf_config_section__delete(section);
+ }
+}
+
+void perf_config_set__delete(struct perf_config_set *set)
+{
+ if (set == NULL)
+ return;
+
+ perf_config_set__purge(set);
+ free(set);
+}
+
+/*
+ * Call this to report error for your variable that should not
+ * get a boolean value (i.e. "[my] var" means "true").
+ */
+int config_error_nonbool(const char *var)
+{
+ return error("Missing value for '%s'", var);
}
void set_buildid_dir(const char *dir)
@@ -548,16 +765,13 @@ void set_buildid_dir(const char *dir)
if (dir)
scnprintf(buildid_dir, MAXPATHLEN-1, "%s", dir);
- /* try config file */
- if (buildid_dir[0] == '\0')
- check_buildid_dir_config();
-
/* default to $HOME/.debug */
if (buildid_dir[0] == '\0') {
- char *v = getenv("HOME");
- if (v) {
+ char *home = getenv("HOME");
+
+ if (home) {
snprintf(buildid_dir, MAXPATHLEN-1, "%s/%s",
- v, DEBUG_CACHE_DIR);
+ home, DEBUG_CACHE_DIR);
} else {
strncpy(buildid_dir, DEBUG_CACHE_DIR, MAXPATHLEN-1);
}
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