linux-kernel - Re: patch] cpusets, cgroups: disallow attaching kthreadd

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Message-ID: <CALdu-PDP5ytAk_W+yUZ4dkJLW_z=sy1jgds2V=4GHykepM_Ufg@mail.gmail.com>
Date:	Tue, 18 Oct 2011 21:56:13 -0700
From:	Paul Menage <paul@...lmenage.org>
To:	Mike Galbraith <efault@....de>
Cc:	David Rientjes <rientjes@...gle.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	LKML <linux-kernel@...r.kernel.org>,
	Tejun Heo <htejun@...il.com>, Li Zefan <lizf@...fujitsu.com>
Subject: Re: patch] cpusets, cgroups: disallow attaching kthreadd

On Tue, Oct 18, 2011 at 9:53 PM, Paul Menage <paul@...lmenage.org> wrote:
>
> I can see the argument that the number of use-cases for this is fairly
> small, but in line with the principle of keeping the ABI as stable as
> possible in the absence of bugs that force a change, having the
> restriction in the necessary subsystems seems cleaner.
>

Separately, an alternative fix for the cpusets case be to make it
always possible to move a thread to the root cpuset, even if it's
PF_THREAD_BOUND?

Paul
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