From: arnd@arndb.de (Arnd Bergmann)
Date: Sat, 6 Oct 2012 06:19:41 +0000
Subject: [PATCH 07/16] cgroup: fix warning when building without any subsys
In-Reply-To: <20121006021451.GA2601@localhost>
References: <1349448930-23976-1-git-send-email-arnd@arndb.de>
 <1349448930-23976-8-git-send-email-arnd@arndb.de>
 <20121006021451.GA2601@localhost>
Message-ID: <201210060619.41645.arnd@arndb.de>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On Saturday 06 October 2012, Tejun Heo wrote:
> 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?

Ah, you are right. I can confirm the problem is gone, and I'll drop
the patch.

	Arnd