perf: Remove duplicate invocation on perf_event_for_each

The @func callback was invoked twice for group leader when
perf_event_for_each() called. It seems the commit 75f937f24bd9
("perf_counter: Fix ctx->mutex vs counter ->mutex inversion") made the
mistake during the change.

Signed-off-by: Namhyung Kim <namhyung.kim@lge.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1338443506-25009-1-git-send-email-namhyung.kim@lge.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

1 files changed, 0 insertions, 1 deletions

diff --git a/kernel/events/core.c b/kernel/events/core.c
index 5b06cbbf6931..f85c0154b333 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -3181,7 +3181,6 @@ static void perf_event_for_each(struct perf_event *event,
         event = event->group_leader;
 
         perf_event_for_each_child(event, func);
-        func(event);
         list_for_each_entry(sibling, &event->sibling_list, group_entry)
                 perf_event_for_each_child(sibling, func);
         mutex_unlock(&ctx->mutex);