linux-kernel - Re: [PATCH] sched/schedutil: Fix deadlock between cpuset and cpu hotplug when using schedutil

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Message-ID: <9ade9d43-3ed1-1239-f26e-73145856275a@arm.com>
Date:   Mon, 11 Jul 2022 08:32:38 +0100
From:   Lukasz Luba <lukasz.luba@....com>
To:     Xuewen Yan <xuewen.yan94@...il.com>,
        Xuewen Yan <xuewen.yan@...soc.com>
Cc:     rafael@...nel.org, viresh.kumar@...aro.org, mingo@...hat.com,
        peterz@...radead.org, juri.lelli@...hat.com,
        vincent.guittot@...aro.org, dietmar.eggemann@....com,
        rostedt@...dmis.org, bsegall@...gle.com, mgorman@...e.de,
        bristot@...hat.com, linux-kernel@...r.kernel.org,
        ke.wang@...soc.com, xuewyan@...mail.com, linux-pm@...r.kernel.org
Subject: Re: [PATCH] sched/schedutil: Fix deadlock between cpuset and cpu
 hotplug when using schedutil

Hi Xuewen,

On 7/11/22 08:21, Xuewen Yan wrote:
> Hi all
> 
> This deadlock is inevitable, any comment?

Could you tell me how to reproduce this?
Is there a need of special cgroup setup?

Regards,
Lukasz