linux-kernel - Re: [PATCH 5/6] cgroup: implement cgroup v2 thread support

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Message-ID: <20170718184714.GA3365493@devbig577.frc2.facebook.com>
Date:   Tue, 18 Jul 2017 14:47:14 -0400
From:   Tejun Heo <tj@...nel.org>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     lizefan@...wei.com, hannes@...xchg.org, mingo@...hat.com,
        longman@...hat.com, cgroups@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel-team@...com, pjt@...gle.com,
        luto@...capital.net, efault@....de, torvalds@...ux-foundation.org,
        guro@...com
Subject: Re: [PATCH 5/6] cgroup: implement cgroup v2 thread support

On Tue, Jul 18, 2017 at 08:41:35PM +0200, Peter Zijlstra wrote:
> On Tue, Jul 18, 2017 at 01:54:56PM -0400, Tejun Heo wrote:
> 
> > Okay, we're kinda off the rails now.  Just to verify that we're on the
> > same page, are you also saying that the following should be a valid
> > configuration?
> > 
> > 	R (D)
> >         |
> > 	A (D and has processes in it and controllers enabled)
> >         |
> >         C (D and has processes in it) 
> > 
> 
> Argh, the no internal process thing again -- I completely forgot about
> that :-(

Heh, yeah, we wouldn't be talking about all these otherwise.  The
restriction is pain in the ass but at the same time useful for
full(er)-scope resource control.  Were there other things that caught
your eyes?

Thanks.

-- 
tejun