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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: 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/1445784728-21732-23-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2015-10-25 15:51:38 +01:00 committed by Arnaldo Carvalho de Melo
parent a6e5281780
commit daeecbc0c4
4 changed files with 55 additions and 0 deletions
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21
tools/perf/tests/event_update.c
View File

@ -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;
}

5
tools/perf/util/event.h
View File

@ -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 {

26
tools/perf/util/header.c
View File

@ -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;
}

3
tools/perf/util/header.h
View File

@ -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,