linux-kernel - Re: [PATCH] cpuset: Allow cpuset controller in default hierarchy

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Message-ID: <1503595991.5278.11.camel@gmx.de>
Date:   Thu, 24 Aug 2017 19:33:11 +0200
From:   Mike Galbraith <efault@....de>
To:     Tejun Heo <tj@...nel.org>, Waiman Long <longman@...hat.com>
Cc:     Li Zefan <lizefan@...wei.com>,
        Johannes Weiner <hannes@...xchg.org>, cgroups@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] cpuset: Allow cpuset controller in default hierarchy

On Thu, 2017-08-24 at 07:43 -0700, Tejun Heo wrote:
> Hello, Waiman.
> 
> On Thu, Aug 24, 2017 at 10:40:11AM -0400, Waiman Long wrote:
> > Given the fact that thread mode is now queued for 4.14, it is now
> > time to enable cpuset to be used in the default hierarchy (cgroup v2)
> > as it is clearly threaded.
> 
> I'm not sure we want things like exclusive settings in v2 as it
> directly violates basic hierarchy rules (a sibling shouldn't be able
> to affect what another sibling can or can't do).  We need to think
> more about what should be exposed in v2.

I was wondering when this was gonna come up.  The cpu/cpuacct stuff
seems well on its way to resolution, but partitioning (critical) is sti
ll dangling in the breeze.

	-Mike