diff options
Diffstat (limited to 'tools/perf/util/pmu.c')
| -rw-r--r-- | tools/perf/util/pmu.c | 115 |
1 files changed, 94 insertions, 21 deletions
diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c index e243ad962a4d..5c9c4947cfb4 100644 --- a/tools/perf/util/pmu.c +++ b/tools/perf/util/pmu.c @@ -163,6 +163,41 @@ error: return -1; } +static int +perf_pmu__parse_per_pkg(struct perf_pmu_alias *alias, char *dir, char *name) +{ + char path[PATH_MAX]; + int fd; + + snprintf(path, PATH_MAX, "%s/%s.per-pkg", dir, name); + + fd = open(path, O_RDONLY); + if (fd == -1) + return -1; + + close(fd); + + alias->per_pkg = true; + return 0; +} + +static int perf_pmu__parse_snapshot(struct perf_pmu_alias *alias, + char *dir, char *name) +{ + char path[PATH_MAX]; + int fd; + + snprintf(path, PATH_MAX, "%s/%s.snapshot", dir, name); + + fd = open(path, O_RDONLY); + if (fd == -1) + return -1; + + alias->snapshot = true; + close(fd); + return 0; +} + static int perf_pmu__new_alias(struct list_head *list, char *dir, char *name, FILE *file) { struct perf_pmu_alias *alias; @@ -181,6 +216,7 @@ static int perf_pmu__new_alias(struct list_head *list, char *dir, char *name, FI INIT_LIST_HEAD(&alias->terms); alias->scale = 1.0; alias->unit[0] = '\0'; + alias->per_pkg = false; ret = parse_events_terms(&alias->terms, buf); if (ret) { @@ -194,6 +230,8 @@ static int perf_pmu__new_alias(struct list_head *list, char *dir, char *name, FI */ perf_pmu__parse_unit(alias, dir, name); perf_pmu__parse_scale(alias, dir, name); + perf_pmu__parse_per_pkg(alias, dir, name); + perf_pmu__parse_snapshot(alias, dir, name); list_add_tail(&alias->list, list); @@ -209,6 +247,10 @@ static inline bool pmu_alias_info_file(char *name) return true; if (len > 6 && !strcmp(name + len - 6, ".scale")) return true; + if (len > 8 && !strcmp(name + len - 8, ".per-pkg")) + return true; + if (len > 9 && !strcmp(name + len - 9, ".snapshot")) + return true; return false; } @@ -617,23 +659,27 @@ static struct perf_pmu_alias *pmu_find_alias(struct perf_pmu *pmu, } -static int check_unit_scale(struct perf_pmu_alias *alias, - const char **unit, double *scale) +static int check_info_data(struct perf_pmu_alias *alias, + struct perf_pmu_info *info) { /* * Only one term in event definition can - * define unit and scale, fail if there's - * more than one. + * define unit, scale and snapshot, fail + * if there's more than one. */ - if ((*unit && alias->unit) || - (*scale && alias->scale)) + if ((info->unit && alias->unit) || + (info->scale && alias->scale) || + (info->snapshot && alias->snapshot)) return -EINVAL; if (alias->unit) - *unit = alias->unit; + info->unit = alias->unit; if (alias->scale) - *scale = alias->scale; + info->scale = alias->scale; + + if (alias->snapshot) + info->snapshot = alias->snapshot; return 0; } @@ -649,12 +695,15 @@ int perf_pmu__check_alias(struct perf_pmu *pmu, struct list_head *head_terms, struct perf_pmu_alias *alias; int ret; + info->per_pkg = false; + /* * Mark unit and scale as not set * (different from default values, see below) */ - info->unit = NULL; - info->scale = 0.0; + info->unit = NULL; + info->scale = 0.0; + info->snapshot = false; list_for_each_entry_safe(term, h, head_terms, list) { alias = pmu_find_alias(pmu, term); @@ -664,10 +713,13 @@ int perf_pmu__check_alias(struct perf_pmu *pmu, struct list_head *head_terms, if (ret) return ret; - ret = check_unit_scale(alias, &info->unit, &info->scale); + ret = check_info_data(alias, info); if (ret) return ret; + if (alias->per_pkg) + info->per_pkg = true; + list_del(&term->list); free(term); } @@ -747,15 +799,18 @@ void print_pmu_events(const char *event_glob, bool name_only) pmu = NULL; len = 0; - while ((pmu = perf_pmu__scan(pmu)) != NULL) + while ((pmu = perf_pmu__scan(pmu)) != NULL) { list_for_each_entry(alias, &pmu->aliases, list) len++; - aliases = malloc(sizeof(char *) * len); + if (pmu->selectable) + len++; + } + aliases = zalloc(sizeof(char *) * len); if (!aliases) - return; + goto out_enomem; pmu = NULL; j = 0; - while ((pmu = perf_pmu__scan(pmu)) != NULL) + while ((pmu = perf_pmu__scan(pmu)) != NULL) { list_for_each_entry(alias, &pmu->aliases, list) { char *name = format_alias(buf, sizeof(buf), pmu, alias); bool is_cpu = !strcmp(pmu->name, "cpu"); @@ -765,13 +820,23 @@ void print_pmu_events(const char *event_glob, bool name_only) (!is_cpu && strglobmatch(alias->name, event_glob)))) continue; - aliases[j] = name; + if (is_cpu && !name_only) - aliases[j] = format_alias_or(buf, sizeof(buf), - pmu, alias); - aliases[j] = strdup(aliases[j]); + name = format_alias_or(buf, sizeof(buf), pmu, alias); + + aliases[j] = strdup(name); + if (aliases[j] == NULL) + goto out_enomem; j++; } + if (pmu->selectable) { + char *s; + if (asprintf(&s, "%s//", pmu->name) < 0) + goto out_enomem; + aliases[j] = s; + j++; + } + } len = j; qsort(aliases, len, sizeof(char *), cmp_string); for (j = 0; j < len; j++) { @@ -780,12 +845,20 @@ void print_pmu_events(const char *event_glob, bool name_only) continue; } printf(" %-50s [Kernel PMU event]\n", aliases[j]); - zfree(&aliases[j]); printed++; } if (printed) printf("\n"); - free(aliases); +out_free: + for (j = 0; j < len; j++) + zfree(&aliases[j]); + zfree(&aliases); + return; + +out_enomem: + printf("FATAL: not enough memory to print PMU events\n"); + if (aliases) + goto out_free; } bool pmu_have_event(const char *pname, const char *name) |