From: Zefan Li Subject: Re: [PATCH 01/10] cgroup: don't print subsystems for the default hierarchy Date: Wed, 29 Jul 2015 09:18:02 +0800 Message-ID: <55B829CA.1040106@huawei.com> References: <1437763434-28699-1-git-send-email-tj@kernel.org> <1437763434-28699-2-git-send-email-tj@kernel.org> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1437763434-28699-2-git-send-email-tj-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org> Sender: cgroups-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-ID: Content-Type: text/plain; charset="us-ascii" To: Tejun Heo Cc: axboe-tSWWG44O7X1aa/9Udqfwiw@public.gmane.org, vgoyal-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, avanzini.arianna-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, kernel-team-b10kYP2dOMg@public.gmane.org, hannes-druUgvl0LCNAfugRpC6u6w@public.gmane.org, cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org On 2015/7/25 2:43, Tejun Heo wrote: > It doesn't make sense to print subsystems on mount option or > /proc/PID/cgroup for the default hierarchy. > > * cgroup.controllers file at the root of the default hierarchy lists > the currently attached controllers. > > * The default hierarchy is catch-all for unmounted subsystems. > > * The default hierarchy doesn't accept any mount options. > > Suppress subsystem printing on mount options and /proc/PID/cgroup for > the default hierarchy. > > Signed-off-by: Tejun Heo > Cc: Li Zefan > Cc: Johannes Weiner > Cc: cgroups-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Acked