From: Ammar Faizi <ammarfaizi2@gnuweeb.org>
To: Zqiang <qiang1.zhang@intel.com>, "Paul E. McKenney" <paulmck@kernel.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH v3] rcu: Add per-CPU rcuc task info to RCU CPU stall warnings
Date: Tue, 25 Jan 2022 14:04:04 +0700 [thread overview]
Message-ID: <df2d15fe-bc81-bdb1-1c31-2d717f274ab0@gnuweeb.org> (raw)
In-Reply-To: <20220125024744.4186726-1-qiang1.zhang@intel.com>
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@gnuweeb.org>
> Signed-off-by: Zqiang <qiang1.zhang@intel.com>
> ---
For https://lore.kernel.org/lkml/20220125024744.4186726-1-qiang1.zhang@intel.com/T/
```
Reviewed-by: Ammar Faizi <ammarfaizi2@gnuweeb.org>
```
Thank you!
--
Ammar Faizi
next prev parent reply other threads:[~2022-01-25 7:06 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-25 2:47 Zqiang
2022-01-25 7:04 ` Ammar Faizi [this message]
2022-01-25 19:15 ` Paul E. McKenney
2022-01-26 2:34 ` Zhang, Qiang1
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