linux-kernel - Re: [PATCH 3/3] thermal/intel_powerclamp: Convert to CPU hotplug state

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Message-ID: <20161024154807.GQ23809@pathway.suse.cz>
Date:   Mon, 24 Oct 2016 17:48:07 +0200
From:   Petr Mladek <pmladek@...e.com>
To:     Jacob Pan <jacob.jun.pan@...ux.intel.com>
Cc:     Zhang Rui <rui.zhang@...el.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Eduardo Valentin <edubezval@...il.com>,
        Tejun Heo <tj@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] thermal/intel_powerclamp: Convert to CPU hotplug
 state

On Fri 2016-10-21 13:21:18, Jacob Pan wrote:
> On Mon, 17 Oct 2016 14:32:52 +0200
> Petr Mladek <pmladek@...e.com> wrote:
> 
> > From: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
> > 
> Hi Sebastian,
> I applied this patchset on 4.9-rc1 and run some cpu online/offline
> loops test while injecting idle, e.g. 25%. I got system hang after a
> few cycles. Still looking into root cause.

You might need the patch
("sched/fair: Fix sched domains NULL deference in select_idle_sibling()")
from linux-tip, see
https://lkml.kernel.org/r/tip-9cfb38a7ba5a9c27c1af8093fb1af4b699c0a441@git.kernel.org

I have mentioned it in the cover letter. I am sorry if it was not
visible enough.

Best Regards,
Petr