On Wed, 2013-05-29 at 14:42 +0100, David Laight wrote:
> > > +/* we don't mind a ~2.5% imprecision */
> > > +#define TSC_MHZ (tsc_khz >> 10)
> 
> Wouldn't (tsc_khz << 10) be better?

We want number of cycles per usec.

Your formula gives number of cycles per 1.024 second.



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