[PATCH 4/5] perf tool: Omit group members from perf_evlist__disable/enable

From: Jiri Olsa
Date: Mon Nov 12 2012 - 12:35:03 EST


There's no need to disable/enable ordinary group member events,
because they are initialy enabled and get scheduled by the leader.

Signed-off-by: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Corey Ashford <cjashfor@xxxxxxxxxxxxxxxxxx>
Cc: Frederic Weisbecker <fweisbec@xxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Paul Mackerras <paulus@xxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
tools/perf/util/evlist.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 04acae0..e9d2d5d 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -222,6 +222,8 @@ void perf_evlist__disable(struct perf_evlist *evlist)

for (cpu = 0; cpu < evlist->cpus->nr; cpu++) {
list_for_each_entry(pos, &evlist->entries, node) {
+ if (pos->leader)
+ continue;
for (thread = 0; thread < evlist->threads->nr; thread++)
ioctl(FD(pos, cpu, thread),
PERF_EVENT_IOC_DISABLE, 0);
@@ -236,6 +238,8 @@ void perf_evlist__enable(struct perf_evlist *evlist)

for (cpu = 0; cpu < cpu_map__nr(evlist->cpus); cpu++) {
list_for_each_entry(pos, &evlist->entries, node) {
+ if (pos->leader)
+ continue;
for (thread = 0; thread < evlist->threads->nr; thread++)
ioctl(FD(pos, cpu, thread),
PERF_EVENT_IOC_ENABLE, 0);
--
1.7.11.7

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