linux-kernel - Re: [BUG] 2.6.21: Kernel won't boot with either/both of CONFIG_NO_HZ, CONFIG_HIGH_RES

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Date:	Mon, 30 Apr 2007 21:32:13 -0700
From:	Daniel Walker <dwalker@...sta.com>
To:	Mark Lord <lkml@....ca>
Cc:	Michal Piotrowski <michal.k.k.piotrowski@...il.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	tglx@...utronix.de, Linus Torvalds <torvalds@...l.org>
Subject: Re: [BUG] 2.6.21: Kernel won't boot with either/both
	of	CONFIG_NO_HZ, CONFIG_HIGH_RES_TIMERS

On Mon, 2007-04-30 at 23:33 -0400, Mark Lord wrote:
> Daniel Walker wrote:
> > 
> > I'm interested in which clocksource is getting used, which is in the
> > boot log.
> 
> Well then, send me a patch that dumps that information out just before it locks up.
> We know (first post in this thread) that the lockup occurs just after
> these two messages:
> 
>   "switched to high resolution mode on cpu 1"
>   "switched to high resolution mode on cpu 0"
> 
> So just dump out anything else you need to see at the same time,
> and it'll still be on my screen when the darned thing locks up.
> 
> Simple, eh.  We both get to run around a treadmill this way.  ;)

I guess I could make due with the successful boot (less running for us
both).. It's using the hpet clocksource .. You could try adding
clocksource=acpi_pm to the boot args , in the off chance it's an hpet
clock issue.

Daniel

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