linux-kernel - Re: [Bug #10710] [BISECTED] Lots of "rescheduling IPIs" in powertop

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Message-ID: <alpine.LFD.1.10.0805181429230.18798@apollo.tec.linutronix.de>
Date:	Sun, 18 May 2008 14:33:57 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Vegard Nossum <vegard.nossum@...il.com>
cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	Andreas Herrmann <andreas.herrmann3@....com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andi Kleen <ak@...e.de>, Andi Kleen <andi@...stfloor.org>,
	Arjan van de Ven <arjan@...radead.org>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: [Bug #10710] [BISECTED] Lots of "rescheduling IPIs" in
 powertop

On Sun, 18 May 2008, Vegard Nossum wrote:
> On Sun, May 18, 2008 at 1:13 PM, Rafael J. Wysocki <rjw@...k.pl> wrote:
> > This message has been generated automatically as a part of a report
> > of recent regressions.
> >
> > The following bug entry is on the current list of known regressions
> > from 2.6.25.  Please verify if it still should be listed.
> >
> >
> > Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=10710
> > Subject         : [BISECTED] Lots of "rescheduling IPIs" in powertop
> > Submitter       : Vegard Nossum <vegard.nossum@...il.com>
> > Date            : 2008-05-13 20:42 (6 days old)
> > References      : http://marc.info/?l=linux-kernel&amp;m=121071176205864&amp;w=4
> > Handled-By      : Andi Kleen <andi@...stfloor.org>
> >                  Arjan van de Ven <arjan@...radead.org>
> >                  Ingo Molnar <mingo@...e.hu>
> > Patch           : http://marc.info/?l=linux-kernel&amp;m=121074826823352&amp;w=4
> >
> 
> Ingo Molnar provided the patch that solved the problem (the referenced
> link) but he wanted to wait for Andreas Herrmann to provide an
> additional patch that would solve some implication on AMD CPUs. So
> this is in theory fixed, but the fix has not yet been applied anywhere
> as far as I know.

Both fixes are in

http://git.kernel.org/?p=linux/kernel/git/x86/linux-2.6-x86.git;a=shortlog;h=x86-fixes-for-linus

which was pulled by Linus yesterday, but he did not push them out to
his tree yet.

Thanks,

	tglx
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