linux-kernel - Re: [PATCH 00/11 v5] cgroups: Task counter subsystem

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Date:	Tue, 13 Sep 2011 17:21:56 +0200
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Paul Menage <paul@...lmenage.org>,
	Li Zefan <lizf@...fujitsu.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Aditya Kali <adityakali@...gle.com>,
	Oleg Nesterov <oleg@...hat.com>,
	Kay Sievers <kay.sievers@...y.org>,
	Tim Hockin <thockin@...kin.org>, Tejun Heo <tj@...nel.org>,
	Containers <containers@...ts.osdl.org>
Subject: Re: [PATCH 00/11 v5] cgroups: Task counter subsystem

On Tue, Sep 13, 2011 at 01:11:20AM +0200, Frederic Weisbecker wrote:
> No functional changes. Only documentation and comments added.
> Checkpatch.pl fixes, etc...
> 
> This mostly addresses Andrew's reviews on v4.
> 
> Changes in v5:
> 
> - commented res_counter_common_ancestor (patch 6)
> - commented res_counter_inherit (patch 2)
> - merged documentation and task counter subsystem patch (patch 9)
> - rename cgroup_task_counter_res in cgroup_task_res_counter (patch 9)
> - more comments/ fix comments in cgroup_task_counter.c (patch 9)
> - document res_counter_charge return value (patch 8)
> - document res_counter_charge_until (patch 5)
> - more comment in kconfig help (patch 9)
> - fix various checkpatch reported issues

There is a test tool that you can download there:

https://tglx.de/~fweisbec/task_counter_test.tar.gz

It tests various things to ensure the subsystem behaves
as expected:

- correct tasks.usage value when tasks are moved around
- correct fork and cgroup migration rejects if limit
is reached
- correct propagation of limit to parents
- correct protection against forkbombs
- test killing of tasks in a cgroup
- ...
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