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| author | Breno Leitao <leitao@debian.org> | 2026-02-03 09:01:17 -0800 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2026-02-03 09:37:59 -1000 |
| commit | 32d572e39031920691abfada68cdb19ad44b4eeb (patch) | |
| tree | d9b89f9aa3de0d8659c59b35de9f2406fba3e36d /Documentation/admin-guide/kernel-parameters.txt | |
| parent | 51cd2d2decf365a248ddc304b7aa6f0cadc748c3 (diff) | |
| download | lwn-32d572e39031920691abfada68cdb19ad44b4eeb.tar.gz lwn-32d572e39031920691abfada68cdb19ad44b4eeb.zip | |
workqueue: add CONFIG_BOOTPARAM_WQ_STALL_PANIC option
Add a kernel config option to set the default value of
workqueue.panic_on_stall, similar to CONFIG_BOOTPARAM_SOFTLOCKUP_PANIC,
CONFIG_BOOTPARAM_HARDLOCKUP_PANIC and CONFIG_BOOTPARAM_HUNG_TASK_PANIC.
This allows setting the number of workqueue stalls before triggering
a kernel panic at build time, which is useful for high-availability
systems that need consistent panic-on-stall, in other words, those
servers which run with CONFIG_BOOTPARAM_*_PANIC=y already.
The default remains 0 (disabled). Setting it to 1 will panic on the
first stall, and higher values will panic after that many stall
warnings. The value can still be overridden at runtime via the
workqueue.panic_on_stall boot parameter or sysfs.
Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'Documentation/admin-guide/kernel-parameters.txt')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index a8d0afde7f85..5a9df399dd72 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -8336,7 +8336,8 @@ Kernel parameters CONFIG_WQ_WATCHDOG. It sets the number times of the stall to trigger panic. - The default is 0, which disables the panic on stall. + The default is set by CONFIG_BOOTPARAM_WQ_STALL_PANIC, + which is 0 (disabled) if not configured. workqueue.cpu_intensive_thresh_us= Per-cpu work items which run for longer than this |