Messages in this thread Patch in this message | | | From | Yang Jihong <> | Subject | [PATCH v2 1/4] perf trace-event-info: Add tracepoint_id_to_name() helper | Date | Thu, 11 May 2023 07:51:51 +0000 |
| |
Add tracepoint_id_to_name() helper to search for the trace events directory by given event id and return the corresponding tracepoint.
Signed-off-by: Yang Jihong <yangjihong1@huawei.com> --- tools/perf/util/trace-event-info.c | 11 +++++++++++ tools/perf/util/trace-event.h | 6 ++++++ 2 files changed, 17 insertions(+)
diff --git a/tools/perf/util/trace-event-info.c b/tools/perf/util/trace-event-info.c index c24b3a15e319..a5c65cb02a28 100644 --- a/tools/perf/util/trace-event-info.c +++ b/tools/perf/util/trace-event-info.c @@ -466,6 +466,17 @@ static struct tracepoint_path *tracepoint_id_to_path(u64 config) return NULL; } +char *tracepoint_id_to_name(u64 config) +{ + char *buf = NULL; + struct tracepoint_path *path = tracepoint_id_to_path(config); + + if ((path != NULL) && (asprintf(&buf, "%s:%s", path->system, path->name) > 0)) + return buf; + + return NULL; +} + static struct tracepoint_path *tracepoint_name_to_path(const char *name) { struct tracepoint_path *path = zalloc(sizeof(*path)); diff --git a/tools/perf/util/trace-event.h b/tools/perf/util/trace-event.h index a0cff184b1cd..a69ee29419f3 100644 --- a/tools/perf/util/trace-event.h +++ b/tools/perf/util/trace-event.h @@ -62,6 +62,12 @@ unsigned long long eval_flag(const char *flag); int read_tracing_data(int fd, struct list_head *pattrs); +/* + * Return the tracepoint name in the format "subsystem:event_name", + * callers should free the returned string. + */ +char *tracepoint_id_to_name(u64 config); + struct tracing_data { /* size is only valid if temp is 'true' */ ssize_t size; -- 2.30.GIT
| |