linux-kernel - Re: spontaneous reboots and hangs on x86

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Message-Id: <200805241811.06230.m.kozlowski@tuxland.pl>
Date:	Sat, 24 May 2008 18:11:06 +0200
From:	Mariusz Kozlowski <m.kozlowski@...land.pl>
To:	Stephen Rothwell <sfr@...b.auug.org.au>
Cc:	Ingo Molnar <mingo@...e.hu>, Adrian Bunk <bunk@...nel.org>,
	kernel-testers@...r.kernel.org, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-next@...r.kernel.org, Gregory Haskins <ghaskins@...ell.com>
Subject: Re: spontaneous reboots and hangs on x86_64

Hi,

> Hi Ingo,
> 
> On Fri, 16 May 2008 20:53:36 +0200 Mariusz Kozlowski <m.kozlowski@...land.pl> wrote:
> >
> > Ok I got bisection working finally, now I'm at d5be23e2 I have something like 80 revisions left and
> > I'm stuck with this:
> > 
> > In file included from kernel/sched.c:1861:
> > kernel/sched_rt.c: In function 'check_preempt_curr_rt':
> > kernel/sched_rt.c:653: error: implicit declaration of function 'cpupri_find'
> > kernel/sched_rt.c:653: error: 'struct root_domain' has no member named 'cpupri'
> > make[1]: *** [kernel/sched.o] Error 1
> > make: *** [kernel] Error 2
> 
> This error is caused by commit 677ceea32cf1d8ba9a4870bc58079cd7e7f77558
> ("sched: prioritize non-migratable tasks over migratable ones") in the
> sched tree (sched/for-akpm).  This commit is either just wrong, is was
> misrebased, or is just badly out of order.  It introduces a use of
> cpupri_find, but the function is not defined until commit
> ea9b3c95b7c666d4658a139b88587269e5baa647 ("sched: use a 2-d bitmap for
> searching lowest-pri CPU") about 146 commits later ...

Whatever it was its gone in recent linux-next releases, box boots without
problems.

	Mariusz
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