linux-kernel - Re: Horrendous Audio Stutter

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Message-Id: <200805030913.55124.elendil@planet.nl>
Date:	Sat, 3 May 2008 09:13:53 +0200
From:	Frans Pop <elendil@...net.nl>
To:	Mike Galbraith <efault@....de>
Cc:	Parag Warudkar <parag.warudkar@...il.com>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Ingo Molnar <mingo@...e.hu>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: Horrendous Audio Stutter - current git

On Friday 02 May 2008, Mike Galbraith wrote:
> On Fri, 2008-05-02 at 08:21 -0400, Parag Warudkar wrote:
> > On Fri, May 2, 2008 at 8:09 AM, Mike Galbraith <efault@....de> wrote:
> > >  Hm.  I've stumbled across a regression that may be related.  Can you
> > >  please try the attached with group scheduling enabled in current
> > > git?
> >
> > In file included from kernel/sched.c:1902:
> > kernel/sched_fair.c: In function 'print_cfs_rq_tasks':
> > kernel/sched_fair.c:1602: error: implicit declaration of function
> > 'calc_delta_weight'
> > kernel/sched_fair.c:1603: warning: format '%lu' expects type 'long
> > unsigned int', but argument 5 has type 'int'
> > make[1]: *** [kernel/sched.o] Error 1
> > make: *** [kernel] Error 2
> >
> > 'calc_delta_weight' or a replacement not found easily to fix it up!
>
> Oops, I have an unrelated patch in my tree which you also need.

Based on Mike's mails I have quickly tried reverting the following two 
commits to see if that would fix the GROUP_SCHED related regression, but I 
still get a merge error with the second one in sched_fair.c:
$ git revert 7ba2e74ab5
$ git revert 8f1bc385cf

I don't feel comfortable solving the conflict myself as I'd have absolutely 
no idea what I'd be doing and it all seems to require a lot of precision.

As other suggested patches don't seem ready for testing yet, I'll just wait 
for further instructions :-)

Cheers,
FJP
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