From: Namhyung Kim <namhyung....@lge.com>
When using event group viewer, it's better to show the group
description rather than the leader information alone.
If a leader did not contain any member, it's a non-group event.
Cc: Jiri Olsa <jo...@redhat.com>
Cc: Stephane Eranian <eran...@google.com>
Cc: Pekka Enberg <penb...@kernel.org>
Acked-by: Jiri Olsa <jo...@redhat.com>
Signed-off-by: Namhyung Kim <namhy...@kernel.org>
---
tools/perf/builtin-report.c | 18 ++++++++++++++++++
tools/perf/ui/browsers/hists.c | 31 +++++++++++++++++++++++++++++++
tools/perf/ui/gtk/browser.c | 14 +++++++++++---
tools/perf/util/evsel.c | 25 +++++++++++++++++++++++++
tools/perf/util/evsel.h | 8 ++++++++
5 files changed, 93 insertions(+), 3 deletions(-)
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 94011af2a747..be4941afa658 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -299,6 +299,24 @@ static size_t hists__fprintf_nr_sample_events(struct hists
*self,
char unit;
unsigned long nr_samples = self->stats.nr_events[PERF_RECORD_SAMPLE];
u64 nr_events = self->stats.total_period;
+ struct perf_evsel *evsel = hists_2_evsel(self);
+ char buf[512];
+ size_t size = sizeof(buf);
+
+ if (symbol_conf.event_group && evsel->nr_members) {
+ int i;
+ struct events_stats *stats;
+
+ perf_evsel__group_desc(evsel, buf, size);
+ evname = buf;
+
+ for (i = 0; i < evsel->nr_members; i++) {
+ stats = &self->group_stats[i];
+
+ nr_samples += stats->nr_events[PERF_RECORD_SAMPLE];
+ nr_events += stats->total_period;
+ }
+ }
nr_samples = convert_unit(nr_samples, &unit);
ret = fprintf(fp, "# Samples: %lu%c", nr_samples, unit);
diff --git a/tools/perf/ui/browsers/hists.c b/tools/perf/ui/browsers/hists.c
index 894d9bbc81c8..893c07f172f5 100644
--- a/tools/perf/ui/browsers/hists.c
+++ b/tools/perf/ui/browsers/hists.c
@@ -1125,6 +1125,24 @@ static int hists__browser_title(struct hists *hists,
char *bf, size_t size,
const struct thread *thread = hists->thread_filter;
unsigned long nr_samples = hists->stats.nr_events[PERF_RECORD_SAMPLE];
u64 nr_events = hists->stats.total_period;
+ struct perf_evsel *evsel = hists_2_evsel(hists);
+ char buf[512];
+ size_t buflen = sizeof(buf);
+
+ if (symbol_conf.event_group && evsel->nr_members) {
+ int i;
+ struct events_stats *stats;
+
+ perf_evsel__group_desc(evsel, buf, buflen);
+ ev_name = buf;
+
+ for (i = 0; i < evsel->nr_members; i++) {
+ stats = &hists->group_stats[i];
+
+ nr_samples += stats->nr_events[PERF_RECORD_SAMPLE];
+ nr_events += stats->total_period;
+ }
+ }
nr_samples = convert_unit(nr_samples, &unit);
printed = scnprintf(bf, size,
@@ -1521,6 +1539,19 @@ static void perf_evsel_menu__write(struct ui_browser
*browser,
ui_browser__set_color(browser, current_entry ? HE_COLORSET_SELECTED :
HE_COLORSET_NORMAL);
+ if (symbol_conf.event_group && evsel->nr_members) {
+ int i;
+ struct events_stats *stats;
+
+ ev_name = perf_evsel__group_name(evsel);
+
+ for (i = 0; i < evsel->nr_members; i++) {
+ stats = &evsel->hists.group_stats[i];
+
+ nr_events += stats->nr_events[PERF_RECORD_SAMPLE];
+ }
+ }
+
nr_events = convert_unit(nr_events, &unit);
printed = scnprintf(bf, sizeof(bf), "%lu%c%s%s", nr_events,
unit, unit == ' ' ? "" : " ", ev_name);
diff --git a/tools/perf/ui/gtk/browser.c b/tools/perf/ui/gtk/browser.c
index 10cb81849566..a8670c2e748c 100644
--- a/tools/perf/ui/gtk/browser.c
+++ b/tools/perf/ui/gtk/browser.c
@@ -303,10 +303,18 @@ int perf_evlist__gtk_browse_hists(struct perf_evlist
*evlist,
const char *evname = perf_evsel__name(pos);
GtkWidget *scrolled_window;
GtkWidget *tab_label;
+ char buf[512];
+ size_t size = sizeof(buf);
- if (symbol_conf.event_group &&
- !perf_evsel__is_group_leader(pos))
- continue;
+ if (symbol_conf.event_group) {
+ if (!perf_evsel__is_group_leader(pos))
+ continue;
+
+ if (pos->nr_members) {
+ perf_evsel__group_desc(pos, buf, size);
+ evname = buf;
+ }
+ }
scrolled_window = gtk_scrolled_window_new(NULL, NULL);
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 618d41140abd..c5ecd6b7d92b 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -404,6 +404,31 @@ const char *perf_evsel__name(struct perf_evsel *evsel)
return evsel->name ?: "unknown";
}
+const char *perf_evsel__group_name(struct perf_evsel *evsel)
+{
+ return evsel->group_name ?: "anon group";
+}
+
+int perf_evsel__group_desc(struct perf_evsel *evsel, char *buf, size_t size)
+{
+ int ret;
+ struct perf_evsel *pos;
+ const char *group_name = perf_evsel__group_name(evsel);
+
+ ret = scnprintf(buf, size, "%s", group_name);
+
+ ret += scnprintf(buf + ret, size - ret, " { %s",
+ perf_evsel__name(evsel));
+
+ for_each_group_member(pos, evsel)
+ ret += scnprintf(buf + ret, size - ret, ", %s",
+ perf_evsel__name(pos));
+
+ ret += scnprintf(buf + ret, size - ret, " }");
+
+ return ret;
+}
+
void perf_evsel__config(struct perf_evsel *evsel, struct perf_record_opts
*opts,
struct perf_evsel *first)
{
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index 43341296e50b..ae32b1c9ed0a 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -114,6 +114,8 @@ extern const char *perf_evsel__sw_names[PERF_COUNT_SW_MAX];
int __perf_evsel__hw_cache_type_op_res_name(u8 type, u8 op, u8 result,
char *bf, size_t size);
const char *perf_evsel__name(struct perf_evsel *evsel);
+const char *perf_evsel__group_name(struct perf_evsel *evsel);
+int perf_evsel__group_desc(struct perf_evsel *evsel, char *buf, size_t size);
int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads);
int perf_evsel__alloc_id(struct perf_evsel *evsel, int ncpus, int nthreads);
@@ -240,4 +242,10 @@ static inline struct perf_evsel *hists_2_evsel(struct
hists *hists)
{
return container_of(hists, struct perf_evsel, hists);
}
+
+#define for_each_group_member(_evsel, _leader)
\
+for ((_evsel) = list_entry((_leader)->node.next, struct perf_evsel, node);
\
+ (_evsel) && (_evsel)->leader == (_leader);
\
+ (_evsel) = list_entry((_evsel)->node.next, struct perf_evsel, node))
+
#endif /* __PERF_EVSEL_H */
--
1.7.9.2
--
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