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Filename Latest commit message Latest commit date
Tao Chen fc50ed312c perf/ring_buffer: Allow the EPOLLRDNORM flag for poll 
[ Upstream commit c96fff391c095c11dc87dab35be72dee7d217cde ]

The poll man page says POLLRDNORM is equivalent to POLLIN. For poll(),
it seems that if user sets pollfd with POLLRDNORM in userspace, perf_poll
will not return until timeout even if perf_output_wakeup called,
whereas POLLIN returns.

Fixes: 76369139ce ("perf: Split up buffer handling from core code")
Signed-off-by: Tao Chen <chen.dylane@linux.dev>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/20250314030036.2543180-1-chen.dylane@linux.dev
Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-04-10 14:29:40 +02:00
..
callchain.c
core.c perf/core: Fix low freq setting via IOC_PERIOD 2025-03-13 12:43:25 +01:00
hw_breakpoint.c
internal.h
Makefile
ring_buffer.c perf/ring_buffer: Allow the EPOLLRDNORM flag for poll 2025-04-10 14:29:40 +02:00
uprobes.c uprobes: fix kernel info leak via "[uprobes]" vma 2024-11-08 16:20:42 +01:00