From: "weiqi@kylinos.com.cn" <weiqi@kylinos.com.cn>
To: Tejun Heo <tj@kernel.org>
Cc: 韦奇 <weiqi@kylinos.com.cn>,
torvalds <torvalds@linux-foundation.org>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: race condition in schedule_on_each_cpu()
Date: Fri, 07 Jun 2013 09:34:34 +0800 [thread overview]
Message-ID: <51B138AA.4070707@kylinos.com.cn> (raw)
In-Reply-To: <20130606212303.GH5045@htj.dyndns.org>
it's preemption mode related ,
on the 3.0.30-rt50, only config kernel with highest preemption level
(Fully Preemptible Kernel (RT)) in cpu preemption model
will cause problem
and even i use the "Preemptible Kernel" or "Preemptible Kernel
(Low-Latency Desktop)" the problem would not happen..
> I looked through the logs but the only worker depletion related
patches which pop up are around CPU hotplugs, so I don't think they
apply here. If the problem is relatively easy to reproduce && you can't
move onto a newer kernel, I'm afraid bisection probably is the best
option. Thanks!
next prev parent reply other threads:[~2013-06-07 1:34 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <tencent_0777D84B54B4163A3B85255A@qq.com>
2013-06-06 21:23 ` race condition in schedule_on_each_cpu() Tejun Heo
2013-06-07 1:34 ` weiqi [this message]
2013-06-07 2:24 ` weiqi
2013-06-07 23:22 ` Tejun Heo
[not found] ` <51B27744.6090507@kylinos.com.cn>
2013-06-08 11:30 ` weiqi
[not found] <51A7FFE8.6060204@kylinos.com.cn>
[not found] ` <20130531023246.GD30479@mtj.dyndns.org>
[not found] ` <51A821F3.1000605@kylinos.com.cn>
2013-05-31 5:03 ` Tejun Heo
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