linux-kernel - Re: [PATCH] sched: shorten setting the allowed cpu mask of task

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Date:	Mon, 9 May 2011 20:52:53 +0800
From:	Hillf Danton <dhillf@...il.com>
To:	Yong Zhang <yong.zhang0@...il.com>
Cc:	LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>,
	Peter Zijlstra <peterz@...radead.org>,
	Mike Galbraith <efault@....de>
Subject: Re: [PATCH] sched: shorten setting the allowed cpu mask of task

On Mon, May 9, 2011 at 12:39 PM, Yong Zhang <yong.zhang0@...il.com> wrote:
> On Fri, May 6, 2011 at 8:52 PM, Hillf Danton <dhillf@...il.com> wrote:
>> When setting the allowed cpu mask for a given task, if the task is
>> already bound to certain cpu, after checking the validity of the new
>
> Maybe we don't need to restrict it only on task bound to certain cpu.
>
Hi Yong

The original code guards, I guess, casual change in the mask of
allowed CPUs, if bounded,
for tasks such as the workers of work queue. So the restriction looks necessary.

thanks
          Hillf
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