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Date: Fri, 28 May 2010 14:02:36 +0100
From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Peter Zijlstra <peterz@infradead.org>
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Subject: Re: [linux-pm] [PATCH 0/8] Suspend block api (version 8)
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On Fri, 28 May 2010 14:30:36 +0200
Peter Zijlstra <peterz@infradead.org> wrote:

> On Fri, 2010-05-28 at 13:21 +0100, Alan Cox wrote:
> > [Total kernel changes
> > 
> >         Ability to mark/unmark a scheduler control group as outside of
> >         some parts of idle consideration. Generically useful and
> >         localised. Group latency will do most jobs fine (Zygo is correct
> >         it can't solve his backup case elegantly I think)
> > 
> >         Test in the idling logic to distinguish the case and only needed
> >         for a single Android specific power module. Generically useful
> >         and localised] 
> 
> I really don't like this..
> 
> Why can't we go with the previously suggested: make bad apps block on
> QoS resources or send SIGXCPU, SIGSTOP, SIGTERM and eventually SIGKILL

Ok. Are you happy with the QoS being attached to a scheduler control
group and the use of them to figure out what is what ?