linux-kernel - Re: 2.6.18-rc2-mm1 timer int 0 doesn't work

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Date:	Fri, 28 Jul 2006 20:58:33 -0600
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Andrew Morton <akpm@...l.org>
Cc:	Paul Fulghum <paulkf@...rogate.com>, ak@....de,
	linux-kernel@...r.kernel.org, mingo@...e.hu
Subject: Re: 2.6.18-rc2-mm1 timer int 0 doesn't work

Andrew Morton <akpm@...l.org> writes:

> On Fri, 28 Jul 2006 20:16:32 -0500
> Paul Fulghum <paulkf@...rogate.com> wrote:
>
>> On Fri, 2006-07-28 at 19:15 -0500, Paul Fulghum wrote:
>> > I'm doing a build on my home machine now to see if it
>> > happens there also.
>> 
>> Well, the timer int 0 problem does not happen on my home machine.
>> However, it still crashes in early boot for a different reason.
>> 
>> 2.6.18-rc2 works fine with same config.
>> 
>> In this case the error is:
>> 
>> No per-cpu room for modules
>
> yeah, sorry, that's a known problem which nobody appears to be doing
> anything about.  The expansion of NR_IRQS gobbles all the percpu memory in
> the kstat structure.

Sorry I didn't realize it was so easy to trip over.
It's on my todo list for sometime in the next couple of days.

> I assume you have a large NR_CPUS?  Decreasing it should help.

Eric
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