linux-kernel - Re: [PATCHSET cgroup/for-3.16] cgroup: implement unified hierarchy, v2

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Message-ID: <20140415220809.GD13099@mtj.dyndns.org>
Date:	Tue, 15 Apr 2014 18:08:09 -0400
From:	Tejun Heo <tj@...nel.org>
To:	Li Zefan <lizefan@...wei.com>
Cc:	containers@...ts.linux-foundation.org, cgroups@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCHSET cgroup/for-3.16] cgroup: implement unified hierarchy,
 v2

On Tue, Apr 15, 2014 at 10:23:55AM +0800, Li Zefan wrote:
> Right after bootup:
> 
> # mount -t cgroup -o __DEVEL__sane_behavior xxx /mnt
> # ls /mnt
> cgroup.controllers  cgroup.procs  cgroup.sane_behavior  cgroup.subtree_control
> # cat /mnt/cgroup.controllers
> cpuset cpu cpuacct memory devices freezer net_cls blkio perf_event hugetlb
> 
> I don't see any controller knobs...

This was because cgroup_apply_cftypes() was skipping the default
hierarchy while rebinding correctly populated it.  I was alwasy
testing by unmounting other hierarchies so never noticed it.  The 0.5
patch that I just posted should fix the issue.  git branches have been
updated accordingly.

Thanks

-- 
tejun
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