From: Tejun Heo <tj@kernel.org>
To: Breno Leitao <leitao@debian.org>, Lai Jiangshan <jiangshanlai@gmail.com>
Cc: linux-kernel@vger.kernel.org, david.dai@linux.dev,
kernel-team@meta.com, Petr Mladek <pmladek@suse.com>
Subject: Re: [PATCH v2] workqueue: dump the last woken worker for stalled pools
Date: Wed, 01 Jul 2026 08:01:03 -1000 [thread overview]
Message-ID: <fc506b5297bf0d7f75dcdcf4e9d136e7@kernel.org> (raw)
In-Reply-To: <20260701-rest_petr-v2-1-9431de53836e@debian.org>
On Wed, Jul 01, 2026 at 04:05:00AM -0700, Breno Leitao wrote:
> To identify the task most likely responsible for a stall, add
> last_woken_worker (L: pool->lock) to worker_pool and record it in
> kick_pool() just before wake_up_process(). This captures the idle
> worker that was kicked to take over when the last running worker went to
> sleep; if the pool is now stuck with no running worker, that task is the
> prime suspect and its backtrace is dumped by show_pool_no_running_worker().
...
Applied to wq/for-7.3.
Thanks.
--
tejun
prev parent reply other threads:[~2026-07-01 18:02 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-01 11:05 [PATCH v2] workqueue: dump the last woken worker for stalled pools Breno Leitao
2026-07-01 18:01 ` Tejun Heo [this message]
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