perf tools: Add event_update event name type
Adding name type 'event update' event, that stores/transfer events name.
Event's name is stored within perf.data's EVENT_DESC feature, but we
don't have it if we get the report data from pipe.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1445784728-21732-24-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 44198e8..235196b 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -311,6 +311,7 @@
enum {
PERF_EVENT_UPDATE__UNIT = 0,
PERF_EVENT_UPDATE__SCALE = 1,
+ PERF_EVENT_UPDATE__NAME = 2,
};
struct event_update_event_scale {
diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c
index 30edb4b..cd3d005 100644
--- a/tools/perf/util/header.c
+++ b/tools/perf/util/header.c
@@ -2743,6 +2743,24 @@
return err;
}
+int
+perf_event__synthesize_event_update_name(struct perf_tool *tool,
+ struct perf_evsel *evsel,
+ perf_event__handler_t process)
+{
+ struct event_update_event *ev;
+ size_t len = strlen(evsel->name);
+ int err;
+
+ ev = event_update_event__new(len + 1, PERF_EVENT_UPDATE__NAME, evsel->id[0]);
+ if (ev == NULL)
+ return -ENOMEM;
+
+ strncpy(ev->data, evsel->name, len);
+ err = process(tool, (union perf_event*) ev, NULL, NULL);
+ free(ev);
+ return err;
+}
int perf_event__synthesize_attrs(struct perf_tool *tool,
struct perf_session *session,
@@ -2825,6 +2843,9 @@
case PERF_EVENT_UPDATE__UNIT:
evsel->unit = strdup(ev->data);
break;
+ case PERF_EVENT_UPDATE__NAME:
+ evsel->name = strdup(ev->data);
+ break;
case PERF_EVENT_UPDATE__SCALE:
ev_scale = (struct event_update_event_scale *) ev->data;
evsel->scale = ev_scale->scale;
diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h
index fad04cb..51cf566 100644
--- a/tools/perf/util/header.h
+++ b/tools/perf/util/header.h
@@ -111,6 +111,9 @@
int perf_event__synthesize_event_update_scale(struct perf_tool *tool,
struct perf_evsel *evsel,
perf_event__handler_t process);
+int perf_event__synthesize_event_update_name(struct perf_tool *tool,
+ struct perf_evsel *evsel,
+ perf_event__handler_t process);
int perf_event__process_attr(struct perf_tool *tool, union perf_event *event,
struct perf_evlist **pevlist);
int perf_event__process_event_update(struct perf_tool *tool __maybe_unused,