Subject: Re: [PATCH] Time: Delay clocksource selection until later in boot
From: john stultz <johnstul@us.ibm.com>
To: Andrew Morton <akpm@osdl.org>
Cc: malattia@linux.it, linux-kernel@vger.kernel.org
In-Reply-To: <20060117154307.07f57bbb.akpm@osdl.org>
References: <1137525365.27699.97.camel@cog.beaverton.ibm.com>
	 <20060117154307.07f57bbb.akpm@osdl.org>
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Date: Tue, 17 Jan 2006 15:47:59 -0800
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On Tue, 2006-01-17 at 15:43 -0800, Andrew Morton wrote:
> john stultz <johnstul@us.ibm.com> wrote:
> >
> > 	Delay installing new clocksources until later in boot. This avoids some
> > of the clocksource churn that can occur at boot, possibly allowing the
> > system to run for a brief time with a bad clocksource.
> > 
> > This patch resolves the boot time stalls seen by Mattia Dongili.
> > 
> 
> Except he now thinks that it doesn't.  Do you think the patch is good anyway?

I actually do still think its a good idea to avoid the bootup
clocksource churn. I've still got a few ideas for further improving the
TSC registration so I'll probably have another patch or two to try later
this week.

thanks
-john


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