linux-kernel - Re: [PATCH 2.6.21-rt2] PowerPC: decrementer clockevent driver

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Message-Id: <1179502773.20519.56.camel@imap.mvista.com>
Date:	Fri, 18 May 2007 08:39:33 -0700
From:	Daniel Walker <dwalker@...sta.com>
To:	Sergei Shtylyov <sshtylyov@...mvista.com>
Cc:	Kumar Gala <galak@...nel.crashing.org>, tglx@...utronix.de,
	mingo@...e.hu, linuxppc-dev@...abs.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2.6.21-rt2] PowerPC: decrementer clockevent driver

On Fri, 2007-05-18 at 19:06 +0400, Sergei Shtylyov wrote:
> Daniel Walker wrote:
> 
> >>I haven't looked at all the new clock/timer code, is there any  
> >>utility in having support for more than one clock source?
> 
> > There is if the main clocksource has some issues where it can't be used.
> 
>     You mean, having more than one clocksource is *useful* in this case?

Yes.

>     Well, the decrementer frequency may change, at least in theory (if the bus 
> clock changes).

Does that happen very often?

Daniel

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