linux-kernel - Re: [PATCH Resend 1/3] sched: fix nr_busy

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Message-ID: <CAFTL4hxHJ+XKqHWAHVKmd6bHycr15mSdn6cLxh8wT=OHGD82uQ@mail.gmail.com>
Date:	Fri, 25 Jan 2013 14:00:53 +0100
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Vincent Guittot <vincent.guittot@...aro.org>
Cc:	linaro-dev@...ts.linaro.org, linux-kernel@...r.kernel.org,
	ccross@...roid.com, mingo@...nel.org, peterz@...radead.org
Subject: Re: [PATCH Resend 1/3] sched: fix nr_busy_cpus with coupled cpuidle

2013/1/25 Vincent Guittot <vincent.guittot@...aro.org>:
> This sequence is not the right one
>
>> I'm going to look for the saved trace to check the sequence above
>
> I haven't been able to reproduce the bug that this patch was supposed to
> solved. The patch 2 and 3 seem enough to fix the nr_busy_cpus field. I will
> continue to try to reproduce it but it seems that it was a side effect of
> the 2 others fixes of the series

Ok. I just checked again as well and I can't find a scenario where
this can happen. If you find it out or trigger the bug again, don't
hesitate to resend this patch.

Thanks.
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