On 10/20/15 12:22 AM, Kaixu Xia wrote:
diff --git a/kernel/events/core.c b/kernel/events/core.c
index b11756f..5219635 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -6337,6 +6337,9 @@ static int __perf_event_overflow(struct perf_event *event,
irq_work_queue(&event->pending);
}
+ if (unlikely(!atomic_read(&event->soft_enable)))
+ return 0;
+
if (event->overflow_handler)
event->overflow_handler(event, data, regs);
else
Peter,
does this part look right or it should be moved right after
if (unlikely(!is_sampling_event(event)))
return 0;
or even to other function?
It feels to me that it should be moved, since we probably don't
want to active throttling, period adjust and event_limit for events
that are in soft_disabled state.
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