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Message-ID: <1334402900.2528.69.camel@twins>
Subject: Re: [patch 0/2] cpusets, cpu_cgroup: disallow attaching kthreadd
From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: David Rientjes <rientjes@google.com>
Cc: Tejun Heo <tj@kernel.org>, Mike Galbraith <mgalbraith@suse.de>,
        Andrew Morton <akpm@linux-foundation.org>,
        Ingo Molnar <mingo@redhat.com>, Paul Menage <paul@paulmenage.org>,
        LKML <linux-kernel@vger.kernel.org>, Li Zefan <lizefan@huawei.com>
Date: Sat, 14 Apr 2012 13:28:20 +0200
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On Fri, 2012-04-06 at 13:46 -0700, David Rientjes wrote:
> That doesn't work, the kmem extension to memcg does not allow slab to be 
> properly accounted to threads in the root memcg.  From 
> Documentation/cgroups/memory.txt section 2.7:
> 
> "Kernel memory limits are not imposed for the root cgroup. Usage for the 
> root cgroup may or may not be accounted." 

To me that reads like: kmem/memcg is broken.