Adding scale type attr update event, that stores/transfer events scale value. The PMU events can define the scale value which is used to multiply events data.
Link: http://lkml.kernel.org/n/tip-by8wb1atqzhtpx86ybjhw...@git.kernel.org Signed-off-by: Jiri Olsa <jo...@kernel.org> --- tools/perf/tests/attr_update.c | 21 +++++++++++++++++++++ tools/perf/util/event.h | 5 +++++ tools/perf/util/header.c | 26 ++++++++++++++++++++++++++ tools/perf/util/header.h | 3 +++ 4 files changed, 55 insertions(+) diff --git a/tools/perf/tests/attr_update.c b/tools/perf/tests/attr_update.c index a564c3827da4..854a04c37ad6 100644 --- a/tools/perf/tests/attr_update.c +++ b/tools/perf/tests/attr_update.c @@ -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 attr_update_event *ev = (struct attr_update_event *) event; + struct attr_update_event_scale *ev_data; + + ev_data = (struct attr_update_event_scale *) ev->data; + + TEST_ASSERT_VAL("wrong id", ev->id == 123); + TEST_ASSERT_VAL("wrong id", ev->type == PERF_ATTR_UPDATE__SCALE); + TEST_ASSERT_VAL("wrong scale", ev_data->scale = 0.123); + return 0; +} + int test__attr_update(void) { struct perf_evlist *evlist; @@ -38,5 +54,10 @@ int test__attr_update(void) TEST_ASSERT_VAL("failed to synthesize attr update unit", !perf_event__synthesize_attr_update_unit(NULL, evsel, process_event_unit)); + evsel->scale = 0.123; + + TEST_ASSERT_VAL("failed to synthesize attr update scale", + !perf_event__synthesize_attr_update_scale(NULL, evsel, process_event_scale)); + return 0; } diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h index 1bccac1b22ec..c3c5085a2855 100644 --- a/tools/perf/util/event.h +++ b/tools/perf/util/event.h @@ -311,6 +311,11 @@ struct attr_event { enum { PERF_ATTR_UPDATE__UNIT = 0, + PERF_ATTR_UPDATE__SCALE = 1, +}; + +struct attr_update_event_scale { + double scale; }; struct attr_update_event { diff --git a/tools/perf/util/header.c b/tools/perf/util/header.c index 50c6b28486e0..b7a9237ff0b9 100644 --- a/tools/perf/util/header.c +++ b/tools/perf/util/header.c @@ -2723,6 +2723,27 @@ perf_event__synthesize_attr_update_unit(struct perf_tool *tool, return err; } +int +perf_event__synthesize_attr_update_scale(struct perf_tool *tool, + struct perf_evsel *evsel, + perf_event__handler_t process) +{ + struct attr_update_event *ev; + struct attr_update_event_scale *ev_data; + int err; + + ev = attr_update_event__alloc(sizeof(*ev_data), PERF_ATTR_UPDATE__SCALE, evsel->id[0]); + if (ev == NULL) + return -ENOMEM; + + ev_data = (struct attr_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_attr_update(struct perf_tool *tool __maybe_unused, struct perf_evlist **pevlist) { struct attr_update_event *ev = &event->attr_update; + struct attr_update_event_scale *ev_scale; struct perf_evlist *evlist; struct perf_evsel *evsel; @@ -2802,6 +2824,10 @@ int perf_event__process_attr_update(struct perf_tool *tool __maybe_unused, switch (ev->type) { case PERF_ATTR_UPDATE__UNIT: evsel->unit = strdup(ev->data); + break; + case PERF_ATTR_UPDATE__SCALE: + ev_scale = (struct attr_update_event_scale *) ev->data; + evsel->scale = ev_scale->scale; default: break; } diff --git a/tools/perf/util/header.h b/tools/perf/util/header.h index 0f00ff55f451..628ee46e14fd 100644 --- a/tools/perf/util/header.h +++ b/tools/perf/util/header.h @@ -108,6 +108,9 @@ int perf_event__synthesize_attrs(struct perf_tool *tool, int perf_event__synthesize_attr_update_unit(struct perf_tool *tool, struct perf_evsel *evsel, perf_event__handler_t process); +int perf_event__synthesize_attr_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_attr_update(struct perf_tool *tool __maybe_unused, -- 2.4.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
