workqueue: add cmdline parameter workqueue.panic_on_stall

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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@samsung.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

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Sangmoon Kim 2024-08-06 14:12:09 +09:00 • committed by Tejun Heo

parent 8400291e28

commit 073107b39e

1 changed files with 16 additions and 0 deletions

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kernel/workqueue.c

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