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Message-ID: <cover.1720534425.git.asml.silence@gmail.com>
Date: Tue, 9 Jul 2024 15:27:17 +0100
From: Pavel Begunkov <asml.silence@...il.com>
To: io-uring@...r.kernel.org
Cc: Jens Axboe <axboe@...nel.dk>,
asml.silence@...il.com,
Oleg Nesterov <oleg@...hat.com>,
Andrew Morton <akpm@...ux-foundation.org>,
Christian Brauner <brauner@...nel.org>,
Tycho Andersen <tandersen@...flix.com>,
Thomas Gleixner <tglx@...utronix.de>,
linux-kernel@...r.kernel.org,
Julian Orth <ju.orth@...il.com>,
Peter Zijlstra <peterz@...radead.org>,
Tejun Heo <tj@...nel.org>
Subject: [PATCH v2 0/2] fix task_work interation with freezing
It's reported [1] that a task_work queued at a wrong time can prevent
freezing and make the tasks to spin in get_signal() taking 100%
of CPU. Patch 1 is a preparation. Patch 2 addresses the issue.
[1] https://github.com/systemd/systemd/issues/33626
v2: move task_work_run() into do_freezer_trap()
change Fixes tag
Pavel Begunkov (2):
io_uring/io-wq: limit retrying worker initialisation
kernel: rerun task_work while freezing in get_signal()
io_uring/io-wq.c | 10 +++++++---
kernel/signal.c | 8 ++++++++
2 files changed, 15 insertions(+), 3 deletions(-)
--
2.44.0
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