linux-kernel - Re: [PATCH 6/8] Lets ss->can_attach and ss->attach do whole threadgroups at a time

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Message-ID: <20090820043858.GD29801@count0.beaverton.ibm.com>
Date:	Wed, 19 Aug 2009 21:38:58 -0700
From:	Matt Helsley <matthltc@...ibm.com>
To:	Paul Menage <menage@...gle.com>
Cc:	akpm@...ux-foundation.org, bblum@...rew.cmu.edu,
	lizf@...fujitsu.com, containers@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 6/8] Lets ss->can_attach and ss->attach do whole
	threadgroups at a time

On Tue, Aug 18, 2009 at 04:58:38PM -0700, Paul Menage wrote:
> From: Ben Blum <bblum@...gle.com>
> 
> 
> Lets ss->can_attach and ss->attach do whole threadgroups at a time
> 
> This patch alters the ss->can_attach and ss->attach functions to be able to
> deal with a whole threadgroup at a time, for use in cgroup_attach_proc. (This
> is a pre-patch to cgroup-procs-writable.patch.)
> 
> Currently, new mode of the attach function can only tell the subsystem about
> the old cgroup of the threadgroup leader. No subsystem currently needs that
> information for each thread that's being moved, but if one were to be added
> (for example, one that counts tasks within a group) this bit would need to be
> reworked a bit to tell the subsystem the right information.
> 
> Signed-off-by: Ben Blum <bblum@...gle.com>
> Signed-off-by: Paul Menage <menage@...gle.com>

freezer bits:

Reviewed-by: Matt Helsley <matthltc@...ibm.com>
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