From mboxrd@z Thu Jan  1 00:00:00 1970
From: Peter Zijlstra <peterz@infradead.org>
Subject: Re: [PATCH] cpuidle: Fix the CPU stuck at C0 for 2-3s after PM_QOS
 back to DEFAULT
Date: Thu, 14 Aug 2014 15:13:04 +0200
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Cc: Daniel Lezcano <daniel.lezcano@linaro.org>, "Rafael J. Wysocki" <rjw@rjwysocki.net>, "linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>, LKML <linux-kernel@vger.kernel.org>, "Liu, Changcheng" <changcheng.liu@intel.com>, "Wang, Xiaoming" <xiaoming.wang@intel.com>, "Chakravarty, Souvik K" <souvik.k.chakravarty@intel.com>


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On Thu, Aug 14, 2014 at 11:24:06AM +0000, Liu, Chuansheng wrote:
> If inspecting the polling flag, we can not fix the race between poll_idle and smp_callback,
> since in poll_idle(), before set polling flag, if the smp_callback come in, then no resched bit set,
> after that, poll_idle() will do the polling action, without reselection immediately, it will bring power
> regression here.

-ENOPARSE. Is there a question there?

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