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Date: Tue, 3 Aug 2004 05:19:07 -0400 (EDT)
From: Ingo Molnar <mingo@redhat.com>
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To: Shane Shrybman <shrybman@aei.ca>
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Subject: Re: [patch] voluntary-preempt-2.6.8-rc2-O2
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On Mon, 2 Aug 2004, Shane Shrybman wrote:

> I was unable to boot -O2. It seemed to hang up when it got to the
> aic7xxx(29160) scsi controller.

does it boot with voluntary-preempt=2 on the boot command line? (or with 
voluntary-preempt=1)?

if it boots this way you can turn it back on runtime by changing
/proc/sys/kernel/voluntary_preemption back to 3 and turning on IRQ
threading for each interrupt via /proc/irq/*/threaded.

	Ingo