Date: Sat, 20 Nov 2010 20:33:21 +0100 (CET)
From: Jesper Juhl <jj@chaosbits.net>
To: Linus Torvalds <torvalds@linux-foundation.org>
cc: Valdis.Kletnieks@vt.edu, Mike Galbraith <efault@gmx.de>,
        Oleg Nesterov <oleg@redhat.com>,
        Peter Zijlstra <a.p.zijlstra@chello.nl>,
        Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
        Ingo Molnar <mingo@elte.hu>, LKML <linux-kernel@vger.kernel.org>,
        Markus Trippelsdorf <markus@trippelsdorf.de>
Subject: Re: [RFC/RFT PATCH v3] sched: automated per tty task groups
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On Mon, 15 Nov 2010, Linus Torvalds wrote:

> On Mon, Nov 15, 2010 at 2:41 PM,  <Valdis.Kletnieks@vt.edu> wrote:
> >
> > So the set of all tasks that never call proc_set_tty() ends up in the same one
> > big default group, correct?
> 
> Well, yes and no.
> 
> Yes, that's what the code currently does. But I did ask Mike (and he
> delivered) to try to make the code look and work in a way where the
> whole "tty thing" is just one of the heuristics.
> 
> It's not clear exactly what the non-tty heuristics would be, but I do
> have a few suggestions:
> 
>  -  I think it might be a good idea to associate a task group with the
> current "cred" of a process, and fall back on it in the absense of a
> tty-provided one.
> 
Or how about (just brainstorming here) a group per 'process group'?


-- 
Jesper Juhl <jj@chaosbits.net>            http://www.chaosbits.net/
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