linux-kernel - [PATCH linux-next] perf/ring_buffer: Add EPOLLRDNORM flag for poll

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Message-Id: <20250313051047.2436098-1-chen.dylane@linux.dev>
Date: Thu, 13 Mar 2025 13:10:47 +0800
From: Tao Chen <chen.dylane@...ux.dev>
To: peterz@...radead.org,
	mingo@...hat.com,
	acme@...nel.org,
	namhyung@...nel.org,
	mark.rutland@....com,
	alexander.shishkin@...ux.intel.com,
	jolsa@...nel.org,
	irogers@...gle.com,
	adrian.hunter@...el.com,
	kan.liang@...ux.intel.com
Cc: linux-perf-users@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Tao Chen <chen.dylane@...ux.dev>
Subject: [PATCH linux-next] perf/ring_buffer: Add EPOLLRDNORM flag for poll

The poll man page says POLLRDNORM is equivalent to POLLIN,
so add EPOLLRDNORM here.

Signed-off-by: Tao Chen <chen.dylane@...ux.dev>
---
 kernel/events/ring_buffer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/events/ring_buffer.c b/kernel/events/ring_buffer.c
index 59a52b1a1..5130b119d 100644
--- a/kernel/events/ring_buffer.c
+++ b/kernel/events/ring_buffer.c
@@ -19,7 +19,7 @@
 
 static void perf_output_wakeup(struct perf_output_handle *handle)
 {
-	atomic_set(&handle->rb->poll, EPOLLIN);
+	atomic_set(&handle->rb->poll, EPOLLIN | EPOLLRDNORM);
 
 	handle->event->pending_wakeup = 1;
 
-- 
2.43.0