linux-kernel - Re: [PATCH v2] workqueue: add cmdline parameter workqueue.panic_on

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Message-ID: <ZrKCkpr05sRN28nc@slm.duckdns.org>
Date: Tue, 6 Aug 2024 10:07:46 -1000
From: Tejun Heo <tj@...nel.org>
To: Sangmoon Kim <sangmoon.kim@...sung.com>
Cc: youngjae24.lim@...sung.com, jordan.lim@...sung.com,
	myoungjae.kim@...sung.com, Lai Jiangshan <jiangshanlai@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] workqueue: add cmdline parameter
 workqueue.panic_on_stall

On Tue, Aug 06, 2024 at 02:12:09PM +0900, Sangmoon Kim wrote:
> When we want to debug the workqueue stall, we can immediately make
> a panic to get the information we want.
> 
> In some systems, it may be necessary to quickly reboot the system to
> escape from a workqueue lockup situation. In this case, we can control
> the number of stall detections to generate panic.
> 
> workqueue.panic_on_stall sets the number times of the stall to trigger
> panic. 0 disables the panic on stall.
> 
> Signed-off-by: Sangmoon Kim <sangmoon.kim@...sung.com>

Appled to wq/for-6.12. Can you do a follow-up patch to document it in
kernel-parameters?

Thanks.

-- 
tejun