linux-kernel - Re: [PATCH REPOST RFC cgroup/for-3.7] cgroup: mark subsystems with broken hierarchy support and whine if cgroups are nested for them

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Message-ID: <20120911170837.GM7677@google.com>
Date:	Tue, 11 Sep 2012 10:08:37 -0700
From:	Tejun Heo <tj@...nel.org>
To:	Li Zefan <lizefan@...wei.com>
Cc:	linux-kernel@...r.kernel.org,
	containers@...ts.linux-foundation.org, cgroups@...r.kernel.org,
	Michal Hocko <mhocko@...e.cz>,
	Glauber Costa <glommer@...allels.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Paul Turner <pjt@...gle.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Thomas Graf <tgraf@...g.ch>,
	"Serge E. Hallyn" <serue@...ibm.com>,
	Vivek Goyal <vgoyal@...hat.com>,
	Paul Mackerras <paulus@...ba.org>,
	Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Neil Horman <nhorman@...driver.com>,
	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
Subject: Re: [PATCH REPOST RFC cgroup/for-3.7] cgroup: mark subsystems with
 broken hierarchy support and whine if cgroups are nested for them

Hello, Li.

On Tue, Sep 11, 2012 at 08:38:51PM +0800, Li Zefan wrote:
> > (I tried to document what's broken and how it should be fixed.  If I
> >  got something wrong, please let me know.)
> > 
> 
> So isn't cpuset broken too? child cpuset's cpu mask isn't necessary a subset
> of the parent's if the cpu_exclusive flag is not set.

Heh, didn't even look at that.  Just assumed it was in the same boat
w/ cpu{acct}.  Will take a look.

Thanks.

-- 
tejun
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