linux-kernel - Re: [PATCH 01/10] cgroup: don't print subsystems for the default hierarchy

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Message-ID: <55B829CA.1040106@huawei.com>
Date:	Wed, 29 Jul 2015 09:18:02 +0800
From:	Zefan Li <lizefan@...wei.com>
To:	Tejun Heo <tj@...nel.org>
CC:	<axboe@...nel.dk>, <vgoyal@...hat.com>,
	<linux-kernel@...r.kernel.org>, <avanzini.arianna@...il.com>,
	<kernel-team@...com>, <hannes@...xchg.org>,
	<cgroups@...r.kernel.org>
Subject: Re: [PATCH 01/10] cgroup: don't print subsystems for the default
 hierarchy

On 2015/7/25 2:43, Tejun Heo wrote:
> It doesn't make sense to print subsystems on mount option or
> /proc/PID/cgroup for the default hierarchy.
> 
> * cgroup.controllers file at the root of the default hierarchy lists
>   the currently attached controllers.
> 
> * The default hierarchy is catch-all for unmounted subsystems.
> 
> * The default hierarchy doesn't accept any mount options.
> 
> Suppress subsystem printing on mount options and /proc/PID/cgroup for
> the default hierarchy.
> 
> Signed-off-by: Tejun Heo <tj@...nel.org>
> Cc: Li Zefan <lizefan@...wei.com>
> Cc: Johannes Weiner <hannes@...xchg.org>
> Cc: cgroups@...r.kernel.org

Acked
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