From mboxrd@z Thu Jan  1 00:00:00 1970
From: Michal Schmidt <mschmidt-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Subject: Re: [RFD] cgroup: about multiple hierarchies
Date: Fri, 02 Mar 2012 11:51:43 +0100
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To: Mike Galbraith <efault-Mmb7MZpHnFY@public.gmane.org>
Cc: Frederic Weisbecker <fweisbec-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>, containers-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, Kay Sievers <kay.sievers-tD+1rO4QERM@public.gmane.org>, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Christoph Hellwig <hch-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>, Lennart Poettering <lennart-mdGvqq1h2p+GdvJs77BJ7Q@public.gmane.org>, Tejun Heo <tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Andrew Morton <akpm-de/tnXTf+JLsfHDXvbKv3WD2FQJk+8+b@public.gmane.org>, Vivek Goyal <vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
List-Id: containers.vger.kernel.org

On 03/01/2012 11:04 PM, Mike Galbraith wrote:
> Hm.  Controllers are perhaps not required, but cpu controller was
> configured and used without consent.  I didn't receive an offer.

This is optional.

"DefaultControllers=" in /etc/systemd/system.conf