Re: [patch 13/19] GTOD: Mark TSC unusable for highres timers

[Chris Friesen]

Alan Cox wrote:
> Ar Gwe, 2006-11-10 am 09:57 +0100, ysgrifennodd Ingo Molnar:

> > We should wait until CPU makers get their act together and implement a 
> > TSC variant that is /architecturally promised/ to have constant 
> > frequency (system bus frequency or whatever) and which never stops.
>
> This will never happen for the really big boxes, light is just too
> slow... Our current TSC handling is not perfect but the TSC is often
> quite usable.

This hypothetical clock wouldn't have to run full speed, would it?  You 
could have a 1MHz clock distributed across even a large system fairly 
easily.

Wouldn't that be good enough?

Chris

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