perf: Fix enable_on_exec for sibling events

Deng-Cheng Zhu reported that sibling events that were created disabled
with enable_on_exec would never get enabled. Iterate all events
instead of the group lists.

Reported-by: Deng-Cheng Zhu <dczhu@mips.com>
Tested-by: Deng-Cheng Zhu <dczhu@mips.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1322048382.14799.41.camel@twins
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/kernel/events/core.c b/kernel/events/core.c
index eeda540..3c1541d 100644 (file)
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -2497,13 +2497,7 @@ static void perf_event_enable_on_exec(struct perf_event_context *ctx)
        raw_spin_lock(&ctx->lock);
        task_ctx_sched_out(ctx);
 
-       list_for_each_entry(event, &ctx->pinned_groups, group_entry) {
-               ret = event_enable_on_exec(event, ctx);
-               if (ret)
-                       enabled = 1;
-       }
-
-       list_for_each_entry(event, &ctx->flexible_groups, group_entry) {
+       list_for_each_entry(event, &ctx->event_list, event_entry) {
                ret = event_enable_on_exec(event, ctx);
                if (ret)
                        enabled = 1;