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2024-04-14selftests/perf_events: Test FASYNC with watermark wakeupsKyle Huey1-0/+146
The test uses PERF_RECORD_SWITCH records to fill the ring buffer and trigger the watermark wakeup, which in turn should trigger an IO signal. Signed-off-by: Kyle Huey <khuey@kylehuey.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lore.kernel.org/r/20240413141618.4160-4-khuey@kylehuey.com