struct perf_pmu perf_pmu__fake;
+#define UNIT_MAX_LEN 31 /* max length for event unit name */
+
+/**
+ * struct perf_pmu_alias - An event either read from sysfs or builtin in
+ * pmu-events.c, created by parsing the pmu-events json files.
+ */
+struct perf_pmu_alias {
+ /** @name: Name of the event like "mem-loads". */
+ char *name;
+ /** @desc: Optional short description of the event. */
+ char *desc;
+ /** @long_desc: Optional long description. */
+ char *long_desc;
+ /**
+ * @topic: Optional topic such as cache or pipeline, particularly for
+ * json events.
+ */
+ char *topic;
+ /**
+ * @str: Comma separated parameter list like
+ * "event=0xcd,umask=0x1,ldlat=0x3".
+ */
+ char *str;
+ /** @terms: Owned list of the original parsed parameters. */
+ struct list_head terms;
+ /** @list: List element of struct perf_pmu aliases. */
+ struct list_head list;
+ /** @unit: Units for the event, such as bytes or cache lines. */
+ char unit[UNIT_MAX_LEN+1];
+ /** @scale: Value to scale read counter values by. */
+ double scale;
+ /**
+ * @per_pkg: Does the file
+ * <sysfs>/bus/event_source/devices/<pmu_name>/events/<name>.per-pkg or
+ * equivalent json value exist and have the value 1.
+ */
+ bool per_pkg;
+ /**
+ * @snapshot: Does the file
+ * <sysfs>/bus/event_source/devices/<pmu_name>/events/<name>.snapshot
+ * exist and have the value 1.
+ */
+ bool snapshot;
+ /**
+ * @deprecated: Is the event hidden and so not shown in perf list by
+ * default.
+ */
+ bool deprecated;
+ /**
+ * @pmu_name: The name copied from the json struct pmu_event. This can
+ * differ from the PMU name as it won't have suffixes.
+ */
+ char *pmu_name;
+};
+
/**
* struct perf_pmu_format - Values from a format file read from
* <sysfs>/devices/cpu/format/ held in struct perf_pmu.
}
/* Delete an alias entry. */
-void perf_pmu_free_alias(struct perf_pmu_alias *newalias)
+static void perf_pmu_free_alias(struct perf_pmu_alias *newalias)
{
zfree(&newalias->name);
zfree(&newalias->desc);
.pmu = pmu,
};
- pmu_events_table_for_each_event(table, pmu_add_cpu_aliases_map_callback, &data);
+ pmu_events_table__for_each_event(table, pmu_add_cpu_aliases_map_callback, &data);
free(data.default_pmu_name);
}
return perf_pmu__config_terms(pmu, attr, head_terms, zero, err);
}
+static struct perf_pmu_alias *perf_pmu__find_alias(const struct perf_pmu *pmu, const char *str)
+{
+ struct perf_pmu_alias *alias;
+
+ list_for_each_entry(alias, &pmu->aliases, list) {
+ if (!strcasecmp(alias->name, str))
+ return alias;
+ }
+ return NULL;
+}
+
static struct perf_pmu_alias *pmu_find_alias(struct perf_pmu *pmu,
struct parse_events_term *term)
{
- struct perf_pmu_alias *alias;
char *name;
if (parse_events__is_hardcoded_term(term))
if (pmu_find_format(&pmu->format, term->config))
return NULL;
name = term->config;
+
} else if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR) {
if (strcasecmp(term->config, "event"))
return NULL;
return NULL;
}
- list_for_each_entry(alias, &pmu->aliases, list) {
- if (!strcasecmp(alias->name, name))
- return alias;
- }
- return NULL;
+ return perf_pmu__find_alias(pmu, name);
}
return 0;
}
-struct perf_pmu_alias *perf_pmu__find_alias(struct perf_pmu *pmu, const char *event)
+struct find_event_args {
+ const char *event;
+ void *state;
+ pmu_event_callback cb;
+};
+
+static int find_event_callback(void *state, struct pmu_event_info *info)
{
- struct perf_pmu_alias *alias;
+ struct find_event_args *args = state;
- list_for_each_entry(alias, &pmu->aliases, list)
- if (!strcmp(event, alias->name))
- return alias;
+ if (!strcmp(args->event, info->name))
+ return args->cb(args->state, info);
- return NULL;
+ return 0;
}
+
+int perf_pmu__find_event(struct perf_pmu *pmu, const char *event, void *state, pmu_event_callback cb)
+{
+ struct find_event_args args = {
+ .event = event,
+ .state = state,
+ .cb = cb,
+ };
+
+ return perf_pmu__for_each_event(pmu, &args, find_event_callback);
+}
+
static void perf_pmu__del_formats(struct list_head *formats)
{
struct perf_pmu_format *fmt, *tmp;
bool perf_pmu__have_event(const struct perf_pmu *pmu, const char *name)
{
- struct perf_pmu_alias *alias;
+ return perf_pmu__find_alias(pmu, name) != NULL;
+}
- list_for_each_entry(alias, &pmu->aliases, list) {
- if (!strcmp(alias->name, name))
- return true;
+size_t perf_pmu__num_events(const struct perf_pmu *pmu)
+{
+ struct list_head *list;
+ size_t nr = 0;
+
+ list_for_each(list, &pmu->aliases)
+ nr++;
+
+ return pmu->selectable ? nr + 1 : nr;
+}
+
+static int sub_non_neg(int a, int b)
+{
+ if (b > a)
+ return 0;
+ return a - b;
+}
+
+static char *format_alias(char *buf, int len, const struct perf_pmu *pmu,
+ const struct perf_pmu_alias *alias)
+{
+ struct parse_events_term *term;
+ int used = snprintf(buf, len, "%s/%s", pmu->name, alias->name);
+
+ list_for_each_entry(term, &alias->terms, list) {
+ if (term->type_val == PARSE_EVENTS__TERM_TYPE_STR)
+ used += snprintf(buf + used, sub_non_neg(len, used),
+ ",%s=%s", term->config,
+ term->val.str);
}
- return false;
+
+ if (sub_non_neg(len, used) > 0) {
+ buf[used] = '/';
+ used++;
+ }
+ if (sub_non_neg(len, used) > 0) {
+ buf[used] = '\0';
+ used++;
+ } else
+ buf[len - 1] = '\0';
+
+ return buf;
+}
+
+int perf_pmu__for_each_event(const struct perf_pmu *pmu, void *state, pmu_event_callback cb)
+{
+ char buf[1024];
+ struct perf_pmu_alias *event;
+ struct pmu_event_info info = {
+ .pmu = pmu,
+ };
+ int ret = 0;
+
+ list_for_each_entry(event, &pmu->aliases, list) {
+ size_t buf_used;
+
+ info.pmu_name = event->pmu_name ?: pmu->name;
+ info.alias = NULL;
+ if (event->desc) {
+ info.name = event->name;
+ buf_used = 0;
+ } else {
+ info.name = format_alias(buf, sizeof(buf), pmu, event);
+ if (pmu->is_core) {
+ info.alias = info.name;
+ info.name = event->name;
+ }
+ buf_used = strlen(buf) + 1;
+ }
+ info.scale_unit = NULL;
+ if (strlen(event->unit) || event->scale != 1.0) {
+ info.scale_unit = buf + buf_used;
+ buf_used += snprintf(buf + buf_used, sizeof(buf) - buf_used,
+ "%G%s", event->scale, event->unit) + 1;
+ }
+ info.desc = event->desc;
+ info.long_desc = event->long_desc;
+ info.encoding_desc = buf + buf_used;
+ buf_used += snprintf(buf + buf_used, sizeof(buf) - buf_used,
+ "%s/%s/", info.pmu_name, event->str) + 1;
+ info.topic = event->topic;
+ info.str = event->str;
+ info.deprecated = event->deprecated;
+ ret = cb(state, &info);
+ if (ret)
+ return ret;
+ }
+ if (pmu->selectable) {
+ info.name = buf;
+ snprintf(buf, sizeof(buf), "%s//", pmu->name);
+ info.alias = NULL;
+ info.scale_unit = NULL;
+ info.desc = NULL;
+ info.long_desc = NULL;
+ info.encoding_desc = NULL;
+ info.topic = NULL;
+ info.pmu_name = pmu->name;
+ info.deprecated = false;
+ ret = cb(state, &info);
+ }
+ return ret;
}
bool perf_pmu__is_software(const struct perf_pmu *pmu)
projects / platform / kernel / linux-starfive.git / blobdiff