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From: Paul Menage <menage@google.com>
Date: Mon, 7 Feb 2011 13:33:34 -0800
Message-ID: <AANLkTinvN9zcG5tzVjyZTfLKofxz-utWzYXvv9Um9sK5@mail.gmail.com>
Subject: Re: [PATCH 1/2] perf_events: add cgroup support (v8)
To: Peter Zijlstra <peterz@infradead.org>
Cc: balbir@linux.vnet.ibm.com, eranian@google.com,
        linux-kernel@vger.kernel.org, mingo@elte.hu, paulus@samba.org,
        davem@davemloft.net, fweisbec@gmail.com, perfmon2-devel@lists.sf.net,
        eranian@gmail.com, robert.richter@amd.com, acme@redhat.com,
        lizf@cn.fujitsu.com
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On Mon, Feb 7, 2011 at 12:09 PM, Peter Zijlstra <peterz@infradead.org> wrote:
>
> Also, the core cgroup code should deal with the cgroup refcount, not
> individual controllers.

Right, that's what I meant - make it so that an rmdir that fails
because a subsystem is still holding a refcount puts/leaves the cgroup
in a state where userspace will still get a notification when the last
refcount is dropped. Not something that the subsystem would have to
worry about.

Paul
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