linux-kernel - Re: [PATCH 1/2] sched: normalize sleeper's vruntime during group change

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Date:	Wed, 29 Sep 2010 09:54:08 +0300
From:	Pekka Enberg <penberg@...nel.org>
To:	Dima Zavin <dima@...roid.com>
Cc:	linux-kernel@...r.kernel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Ingo Molnar <mingo@...e.hu>, Mike Galbraith <efault@....de>,
	Arve Hjønnevåg <arve@...roid.com>
Subject: Re: [PATCH 1/2] sched: normalize sleeper's vruntime during group change

On Wed, Sep 29, 2010 at 9:46 AM, Dima Zavin <dima@...roid.com> wrote:
> This adds a new callback, prep_move_task, to struct sched_class
> to give sched_fair the opportunity to adjust the task's vruntime
> just before setting its new group.
>
> This allows us to properly normalize a sleeping task's vruntime
> when moving it between different cgroups.
>
> Cc: Arve Hjønnevåg <arve@...roid.com>
> Signed-off-by: Dima Zavin <dima@...roid.com>

Nitpick: this changelog probably needs better description of the
problem it's trying to solve or a link to the previous discussion
about it.
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