Re: [patch 0/2] cpusets, cpu_cgroup: disallow attaching kthreadd
From: Tejun Heo
Date: Thu Apr 05 2012 - 18:58:56 EST
Hello,
On Thu, Apr 05, 2012 at 03:55:11PM -0700, David Rientjes wrote:
> > I can see your point but the problem is that it conflicts with the
> > long term direction cgroup is taking and that cgroup seems generally
> > over-engineered to allow too many things which aren't too necessary to
> > the point where it's a giant pain in the ass for the subsystems and
> > people involved, so I'm far more likely to go for chopping down and
> > restricting stuff if it's not strictly necessary.
>
> How does kthreadd's placement conflict with the long-term direction of
> cgroups?
Because there's only single hierarchy, random subsystem saying no on
->can_attach() doesn't work.
Thanks.
--
tejun
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