linux-kernel - Re: [git] CFS-devel, group scheduler, fixes

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Message-ID: <20070924135158.1359013b@twins>
Date:	Mon, 24 Sep 2007 13:51:58 +0200
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Mike Galbraith <efault@....de>
Cc:	Tong Li <tong.n.li@...el.com>, Ingo Molnar <mingo@...e.hu>,
	dimm <dmitry.adamushko@...il.com>, linux-kernel@...r.kernel.org,
	Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>
Subject: Re: [git] CFS-devel, group scheduler, fixes

On Mon, 24 Sep 2007 13:22:14 +0200 Mike Galbraith <efault@....de> wrote:

> On Mon, 2007-09-24 at 12:42 +0200, Mike Galbraith wrote:
> > On Mon, 2007-09-24 at 12:24 +0200, Peter Zijlstra wrote:
> > 
> > > how about something like:
> > > 
> > >  s64 delta = (s64)(vruntime - min_vruntime);
> > >  if (delta > 0)
> > >   min_vruntime += delta;
> > > 
> > > That would rid us of most of the funny conditionals there.
> > 
> > That still left me with negative min_vruntimes.  The pinned hogs didn't
> > lock my box up, but I quickly got the below, so hastily killed it.
> 
> Shouldn't the max() in place_entity() be the max_vruntime() that my
> lysdexia told me it was when I looked at it earlier? ;-)
> 

probably, my tree doesn't have that max anymore so I'm not sure.
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