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perf/ring_buffer: Trigger IO signals for watermark_wakeup

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

Signed-off-by: Kyle Huey <khuey@kylehuey.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20240413141618.4160-3-khuey@kylehuey.com
This commit is contained in:
Kyle Huey 2024-04-13 07:16:18 -07:00 committed by Ingo Molnar
parent 4a01398066
commit fd20bb51ed
1 changed files with 4 additions and 0 deletions
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4
kernel/events/ring_buffer.c
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@ -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);
}