Re: [PATCH v3] rcu: Add per-CPU rcuc task info to RCU CPU stall warnings

[Ammar Faizi]

On 1/25/22 9:47 AM, Zqiang wrote:
> When the 'use_softirq' be set zero, all RCU_SOFTIRQ processing
> be moved to per-CPU rcuc kthreads, if the rcuc kthreads is
> being starved, quiescent state can not report in time. the
> RCU stall may be triggered. this commit adds a stack trace of
> this CPU and dump rcuc kthreads stack to help analyze what
> prevents rcuc kthreads from running.
>
> Suggested-by: Ammar Faizi <ammarfaizi2@xxxxxxxxxxx>
> Signed-off-by: Zqiang <qiang1.zhang@xxxxxxxxx>
> ---

For https://lore.kernel.org/lkml/20220125024744.4186726-1-qiang1.zhang@xxxxxxxxx/T/

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Reviewed-by: Ammar Faizi <ammarfaizi2@xxxxxxxxxxx>

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Thank you!
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Ammar Faizi