linux-kernel - Re: [patch 0/2] cpusets, cpu_cgroup: disallow attaching kthreadd

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Message-id: <4F7EA036.6040909@huawei.com>
Date:	Fri, 06 Apr 2012 15:50:14 +0800
From:	Li Zefan <lizefan@...wei.com>
To:	Tejun Heo <tj@...nel.org>
Cc:	David Rientjes <rientjes@...gle.com>,
	Mike Galbraith <mgalbraith@...e.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...hat.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Menage <paul@...lmenage.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [patch 0/2] cpusets, cpu_cgroup: disallow attaching kthreadd

Tejun Heo wrote:

> On Thu, Apr 05, 2012 at 02:37:04PM -0700, Tejun Heo wrote:
>> look of the current users, I don't think it's gonna be hard.  cpu
>> cgroup would have to learn to ignore tasks with special scheduling
>> class and the blkcg silliness needs to go away but that seems to be
>> it.
> 
> Ooh, right, cgroup-freezer needs to learn how to move tasks across
> cgroups in different states but that has been in the plan for some
> time now.
> 


What do you plan to do with cpusets? cpuset.cpus and cpuset.mems are
empty when a cgroup is created, and thus task attaching will fail.

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