From: Kyle Huey <me@kylehuey.com>
To: Kyle Huey <khuey@kylehuey.com>,
linux-kernel@vger.kernel.org, Namhyung Kim <namhyung@kernel.org>,
Ian Rodgers <irogers@google.com>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@kernel.org>,
Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Robert O'Callahan <robert@ocallahan.org>,
Ingo Molnar <mingo@redhat.com>,
Mark Rutland <mark.rutland@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@kernel.org>,
Adrian Hunter <adrian.hunter@intel.com>,
linux-perf-users@vger.kernel.org
Subject: [PATCH v3 2/3] perf/ring_buffer: Trigger IO signals for watermark_wakeup
Date: Sat, 13 Apr 2024 07:16:18 -0700 [thread overview]
Message-ID: <20240413141618.4160-3-khuey@kylehuey.com> (raw)
In-Reply-To: <20240413141618.4160-1-khuey@kylehuey.com>
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>
---
kernel/events/ring_buffer.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/kernel/events/ring_buffer.c b/kernel/events/ring_buffer.c
index 60ed43d1c29e..4013408ce012 100644
--- a/kernel/events/ring_buffer.c
+++ b/kernel/events/ring_buffer.c
@@ -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);
}
--
2.34.1
next prev parent reply other threads:[~2024-04-13 14:16 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-13 14:16 [PATCH v3 0/3] perf: " Kyle Huey
2024-04-13 14:16 ` [PATCH v3 1/3] perf: Move perf_event_fasync() to perf_event.h Kyle Huey
2024-04-14 20:47 ` [tip: perf/core] " tip-bot2 for Kyle Huey
2024-04-13 14:16 ` Kyle Huey [this message]
2024-04-14 20:47 ` [tip: perf/core] perf/ring_buffer: Trigger IO signals for watermark_wakeup tip-bot2 for Kyle Huey
2024-04-13 14:16 ` [PATCH v3 3/3] selftests/perf_events: Test FASYNC with watermark wakeups Kyle Huey
2024-04-14 20:47 ` [tip: perf/core] " tip-bot2 for Kyle Huey
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