linux-kernel - Re: [PATCH 07/16] cgroup: fix warning when building without any subsys

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Message-ID: <20121006021451.GA2601@localhost>
Date:	Sat, 6 Oct 2012 11:14:51 +0900
From:	Tejun Heo <tj@...nel.org>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	arm@...nel.org, Li Zefan <lizefan@...wei.com>,
	Ben Blum <bblum@...rew.cmu.edu>
Subject: Re: [PATCH 07/16] cgroup: fix warning when building without any
 subsys

On Fri, Oct 05, 2012 at 04:55:21PM +0200, Arnd Bergmann wrote:
> In a configuration where the base cgroup support is enabled but
> every single cgroup subsys is turned off, CGROUP_BUILTIN_SUBSYS_COUNT
> is zero, which causes the sanity check code in cgroup_load_subsys
> to trigger:
> 
>        BUG_ON(ss->subsys_id >= CGROUP_BUILTIN_SUBSYS_COUNT);
>        BUG_ON(subsys[ss->subsys_id] != ss);

CGROUP_BUILTIN_SUBSYS_COUNT is already gone in mainline.  I suppose
this is no longer necessary?

Thanks.

-- 
tejun
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