perf: Always destroy groups on exit

Commit 38b435b16c36 ("perf: Fix tear-down of inherited group events")
states that we need to destroy groups for inherited events, but it
doesn't make any sense to not also destroy groups for normal events.

And while it usually makes no difference (the normal events won't
leak, and its very likely all the group events will die in quick
succession) it does make the code more consistent and closes a
potential hole for trouble.

Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-426egt8zmsm12d2q8k2xz4tt@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --git a/kernel/events/core.c b/kernel/events/core.c
index 1de0d709f69fd83924c5ff6b8df077624c4bf151..819ffc006d673c60528ccf582733a49500b4a373 100644 (file)
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -7400,7 +7400,7 @@ __perf_event_exit_task(struct perf_event *child_event,
                         struct perf_event_context *child_ctx,
                         struct task_struct *child)
 {
-       perf_remove_from_context(child_event, !!child_event->parent);
+       perf_remove_from_context(child_event, true);
 
        /*
         * It can happen that the parent exits first, and has events