linux-kernel - Re: [RFC] cgroup TODOs

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Message-ID: <20120921214002.GA7694@google.com>
Date:	Fri, 21 Sep 2012 14:40:02 -0700
From:	Tejun Heo <tj@...nel.org>
To:	containers@...ts.linux-foundation.org, cgroups@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc:	Li Zefan <lizefan@...wei.com>, Michal Hocko <mhocko@...e.cz>,
	Glauber Costa <glommer@...allels.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Paul Turner <pjt@...gle.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Thomas Graf <tgraf@...g.ch>,
	"Serge E. Hallyn" <serue@...ibm.com>,
	Paul Mackerras <paulus@...ba.org>,
	Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Neil Horman <nhorman@...driver.com>,
	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
Subject: Re: [RFC] cgroup TODOs

On Thu, Sep 13, 2012 at 01:58:27PM -0700, Tejun Heo wrote:
> 7. Misc issues
> 
>   * Sort & unique when listing tasks.  Even the documentation says it
>     doesn't happen but we have a good hunk of code doing it in
>     cgroup.c.  I'm gonna rip it out at some point.  Again, if you
>     don't like it, scream.
> 
>   * At the PLC, pjt told me that assinging threads of a cgroup to
>     different cgroups is useful for some use cases but if we're to
>     have a unified hierarchy, I don't think we can continue to do
>     that.  Paul, can you please elaborate the use case?
> 
>   * Vivek brought up the issue of distributing resources to tasks and
>     groups in the same cgroup.  I don't know.  Need to think more
>     about it.

* Update docs.

* Clean up cftype->read/write*() mess.

* Use sane fs event mechanism.

* Drop userland helper based empty notification.  Argh...

-- 
tejun
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