linux-kernel - Re: [PATCHSET] cgroup, sched: restructure threadgroup locking and replace it with a percpu

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Message-ID: <20150527003407.GM7099@htj.duckdns.org>
Date:	Tue, 26 May 2015 20:34:07 -0400
From:	Tejun Heo <tj@...nel.org>
To:	lizefan@...wei.com
Cc:	cgroups@...r.kernel.org, mingo@...hat.com, peterz@...radead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCHSET] cgroup, sched: restructure threadgroup locking and
 replace it with a percpu_rwsem

On Wed, May 13, 2015 at 04:35:15PM -0400, Tejun Heo wrote:
> threadgroup locking was added because cgroup needs threadgroups to
> stay stable across attach operations.  It was implemented as a
> per-signal_struct generic locking mechanism so that other users which
> require threadgroups stable across blocking operations can use it too;
> however, it hasn't grown any other use cases and still conditionalized
> on CONFIG_CGROUPS.

Applying to cgroups/for-4.2.

Thanks.

-- 
tejun
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