Re: [RFC][PATCH] new timeofday core subsystem (v. A2)

[john stultz]

On Tue, 2005-01-25 at 09:17 +0100, Andi Kleen wrote:
> On Mon, Jan 24, 2005 at 02:51:29PM -0800, john stultz wrote:
> > All,
> > 	Here is a new release of my time of day proposal, which include ppc64
> > support as well as suspend/resume and cpufreq hooks. For basic summary
> > of my ideas, you can follow this link: http://lwn.net/Articles/100665/
> 
> [...]
> How do vsyscalls (running gettimeofday in user space) fit into your 
> architecture? I don't see any provision for this.

Yea, I had some earlier ideas for it, although they were misconceived.
My plan at the moment is to do it similarly to how x86-64 and my i386
patch did it, but still have it on an arch-per-arch basis.

> Also on x86-64 we plan to keep the cycle time base per CPU, that 
> will likely require some more changes to your architecture too.

I like to hear more details, if you can discuss it. Its interesting,
because I don't quite see how you'd be able to do this.

thanks
-john

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