Commit daeecbc0 authored by Jiri Olsa's avatar Jiri Olsa Committed by Arnaldo Carvalho de Melo
Browse files

perf tools: Add event_update event scale type 



A__allocdding scale type 'event update' event, that stores/transfer
events scale value. The PMU events can define the scale
value which is used to multiply events data.

Signed-off-by: default avatarJiri Olsa <jolsa@kernel.org>
Tested-by: default avatarKan 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/1445784728-21732-23-git-send-email-jolsa@kernel.org


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent a6e52817

tools/perf/tests/event_update.c

+21 −0
Original line number Diff line number Diff line
@@ -18,6 +18,22 @@ static int process_event_unit(struct perf_tool *tool __maybe_unused, 
	return 0;

}



static int process_event_scale(struct perf_tool *tool __maybe_unused,

			       union perf_event *event,

			       struct perf_sample *sample __maybe_unused,

			       struct machine *machine __maybe_unused)

{

	struct event_update_event *ev = (struct event_update_event *) event;

	struct event_update_event_scale *ev_data;



	ev_data = (struct event_update_event_scale *) ev->data;



	TEST_ASSERT_VAL("wrong id", ev->id == 123);

	TEST_ASSERT_VAL("wrong id", ev->type == PERF_EVENT_UPDATE__SCALE);

	TEST_ASSERT_VAL("wrong scale", ev_data->scale = 0.123);

	return 0;

}



int test__event_update(int subtest __maybe_unused)

{

	struct perf_evlist *evlist;
@@ -38,5 +54,10 @@ int test__event_update(int subtest __maybe_unused) 
	TEST_ASSERT_VAL("failed to synthesize attr update unit",

			!perf_event__synthesize_event_update_unit(NULL, evsel, process_event_unit));



	evsel->scale = 0.123;



	TEST_ASSERT_VAL("failed to synthesize attr update scale",

			!perf_event__synthesize_event_update_scale(NULL, evsel, process_event_scale));



	return 0;

}

tools/perf/util/event.h

+5 −0
Original line number Diff line number Diff line
@@ -310,6 +310,11 @@ struct attr_event { 


enum {

	PERF_EVENT_UPDATE__UNIT  = 0,

	PERF_EVENT_UPDATE__SCALE = 1,

};



struct event_update_event_scale {

	double scale;

};



struct event_update_event {

tools/perf/util/header.c

+26 −0
Original line number Diff line number Diff line
@@ -2723,6 +2723,27 @@ perf_event__synthesize_event_update_unit(struct perf_tool *tool, 
	return err;

}



int

perf_event__synthesize_event_update_scale(struct perf_tool *tool,

					  struct perf_evsel *evsel,

					  perf_event__handler_t process)

{

	struct event_update_event *ev;

	struct event_update_event_scale *ev_data;

	int err;



	ev = event_update_event__new(sizeof(*ev_data), PERF_EVENT_UPDATE__SCALE, evsel->id[0]);

	if (ev == NULL)

		return -ENOMEM;



	ev_data = (struct event_update_event_scale *) ev->data;

	ev_data->scale = evsel->scale;

	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,

				   perf_event__handler_t process)
@@ -2787,6 +2808,7 @@ int perf_event__process_event_update(struct perf_tool *tool __maybe_unused, 
				     struct perf_evlist **pevlist)

{

	struct event_update_event *ev = &event->event_update;

	struct event_update_event_scale *ev_scale;

	struct perf_evlist *evlist;

	struct perf_evsel *evsel;
@@ -2802,6 +2824,10 @@ int perf_event__process_event_update(struct perf_tool *tool __maybe_unused, 
	switch (ev->type) {

	case PERF_EVENT_UPDATE__UNIT:

		evsel->unit = strdup(ev->data);

		break;

	case PERF_EVENT_UPDATE__SCALE:

		ev_scale = (struct event_update_event_scale *) ev->data;

		evsel->scale = ev_scale->scale;

	default:

		break;

	}

tools/perf/util/header.h

+3 −0
Original line number Diff line number Diff line
@@ -108,6 +108,9 @@ int perf_event__synthesize_attrs(struct perf_tool *tool, 
int perf_event__synthesize_event_update_unit(struct perf_tool *tool,

					     struct perf_evsel *evsel,

					     perf_event__handler_t process);

int perf_event__synthesize_event_update_scale(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,

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