Commit fd20bb51 authored by Kyle Huey's avatar Kyle Huey Committed by Ingo Molnar
Browse files

perf/ring_buffer: Trigger IO signals for watermark_wakeup 



perf_output_wakeup() already marks the perf event fd available for polling.
Trigger IO signals with FASYNC too.

Signed-off-by: default avatarKyle Huey <khuey@kylehuey.com>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20240413141618.4160-3-khuey@kylehuey.com
parent 4a013980

kernel/events/ring_buffer.c

+4 −0
Original line number Diff line number Diff line
@@ -22,6 +22,10 @@ static void perf_output_wakeup(struct perf_output_handle *handle) 
	atomic_set(&handle->rb->poll, EPOLLIN);



	handle->event->pending_wakeup = 1;



	if (*perf_event_fasync(handle->event) && !handle->event->pending_kill)

		handle->event->pending_kill = POLL_IN;



	irq_work_queue(&handle->event->pending_irq);

}