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perf tools: Add event_update event name type

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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>
This commit is contained in:
Jiri Olsa 2015-10-25 15:51:39 +01:00 committed by Arnaldo Carvalho de Melo
parent daeecbc0c4
commit 802c9048b8
4 changed files with 50 additions and 0 deletions
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25
tools/perf/tests/event_update.c
View File

@ -34,10 +34,30 @@ static int process_event_scale(struct perf_tool *tool __maybe_unused,
return 0;
}
struct event_name {
struct perf_tool tool;
const char *name;
};
static int process_event_name(struct perf_tool *tool,
union perf_event *event,
struct perf_sample *sample __maybe_unused,
struct machine *machine __maybe_unused)
{
struct event_name *tmp = container_of(tool, struct event_name, tool);
struct event_update_event *ev = (struct event_update_event*) event;
TEST_ASSERT_VAL("wrong id", ev->id == 123);
TEST_ASSERT_VAL("wrong id", ev->type == PERF_EVENT_UPDATE__NAME);
TEST_ASSERT_VAL("wrong name", !strcmp(ev->data, tmp->name));
return 0;
}
int test__event_update(int subtest __maybe_unused)
{
struct perf_evlist *evlist;
struct perf_evsel *evsel;
struct event_name tmp;
evlist = perf_evlist__new_default();
TEST_ASSERT_VAL("failed to get evlist", evlist);
@ -59,5 +79,10 @@ int test__event_update(int subtest __maybe_unused)
TEST_ASSERT_VAL("failed to synthesize attr update scale",
!perf_event__synthesize_event_update_scale(NULL, evsel, process_event_scale));
tmp.name = perf_evsel__name(evsel);
TEST_ASSERT_VAL("failed to synthesize attr update name",
!perf_event__synthesize_event_update_name(&tmp.tool, evsel, process_event_name));
return 0;
}

1
tools/perf/util/event.h
View File

@ -311,6 +311,7 @@ struct attr_event {
enum {
PERF_EVENT_UPDATE__UNIT = 0,
PERF_EVENT_UPDATE__SCALE = 1,
PERF_EVENT_UPDATE__NAME = 2,
};
struct event_update_event_scale {

21
tools/perf/util/header.c
View File

@ -2743,6 +2743,24 @@ perf_event__synthesize_event_update_scale(struct perf_tool *tool,
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 @@ int perf_event__process_event_update(struct perf_tool *tool __maybe_unused,
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;

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

@ -111,6 +111,9 @@ int perf_event__synthesize_event_update_unit(struct perf_tool *tool,
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,