linux-kernel - Re: [PATCH] [RSDL-mm 0/6] RSDL cpu scheduler for -mm

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Date:	Thu, 8 Mar 2007 15:22:08 +1100
From:	"Con Kolivas" <kernel@...ivas.org>
To:	"Andrew Morton" <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, ck@....kolivas.org
Subject: Re: [PATCH] [RSDL-mm 0/6] RSDL cpu scheduler for -mm

On 08/03/07, Andrew Morton <akpm@...ux-foundation.org> wrote:
> On Wed, 7 Mar 2007 17:43:45 -0800 Andrew Morton <akpm@...ux-foundation.org> wrote:
>
> > On Wed, 7 Mar 2007 12:26:42 +1100
> > Con Kolivas <kernel@...ivas.org> wrote:
> >
> > > What follows is the same patch series that constitutes the RDSL "Rotating
> > > Staircase DeadLine" cpu scheduler resynced for 2.6.21-rc2-mm2.
> >
> > Big oops early in boot on x86_64 SMP, in rq_bitmap_error+0x97/0x9f.
> >
> > I stubbed it out with a `return MAX_RT_PRIO;' (I think) but it then oopsed
> > differently.  Before netconsole had come up, no serial console, no digital
> > camera.
> >
> > There's stuff in http://userweb.kernel.org/~akpm/ck/ - you can probably
> > boot that kernel on your own machine.
> >
> > I need to do rc3-mm1 now.  I might find some time to poke at this
> > further after that, but I have to leave for a week in .jp and it'll be
> > squeezy, sorry.
>
> well it boots os dual pIII and quad powerpc.
>
> The powerpc says
>
> Scheduler bitmap error - bitmap being reconstructed..
>
> during bootup.  But it didn't crash like the Nocona machine.

Ah thanks. Sorry I have a very busy day at work and am unable to do
anything about it till tonight. I could imagine on nocona this would
be due to the idle task being scheduled on init - which it is not
supposed to do but if you read the comment in sched_init it says it
*might. I have no way of handling that at the moment because I wasn't
sure it ever happened any more.  As for the powerpc.. I have no idea
(from where I am at the moment which it would be totally inappopriate
for me to try to debug :P), sorry.

--
-ck
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