Commit-ID: 724b6daa13e100067c30cfc4d1ad06629609dc4e Gitweb: http://git.kernel.org/tip/724b6daa13e100067c30cfc4d1ad06629609dc4e Author: Michael Ellerman <michael@xxxxxxxxxxxxxx> AuthorDate: Wed, 11 Apr 2012 11:54:13 +1000 Committer: Ingo Molnar <mingo@xxxxxxxxxx> CommitDate: Thu, 26 Apr 2012 13:51:31 +0200 perf: Fix perf_event_for_each() to use sibling In perf_event_for_each() we call a function on an event, and then iterate over the siblings of the event. However we don't call the function on the siblings, we call it repeatedly on the original event - it seems "obvious" that we should be calling it with sibling as the argument. It looks like this broke in commit 75f937f24bd9 ("Fix ctx->mutex vs counter->mutex inversion"). The only effect of the bug is that the PERF_IOC_FLAG_GROUP parameter to the ioctls doesn't work. Signed-off-by: Michael Ellerman <michael@xxxxxxxxxxxxxx> Signed-off-by: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx> Link: http://lkml.kernel.org/r/1334109253-31329-1-git-send-email-michael@xxxxxxxxxxxxxx Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> --- kernel/events/core.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/kernel/events/core.c b/kernel/events/core.c index a6a9ec4..fd126f8 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -3183,7 +3183,7 @@ static void perf_event_for_each(struct perf_event *event, perf_event_for_each_child(event, func); func(event); list_for_each_entry(sibling, &event->sibling_list, group_entry) - perf_event_for_each_child(event, func); + perf_event_for_each_child(sibling, func); mutex_unlock(&ctx->mutex); } -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html