Re: [BUG] cpufreq: constant cpu_khz

From: Ingo Molnar
Date: Mon Aug 25 2008 - 08:39:58 EST



* Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:

> > I noticed that my sched_clock() was slow on a number of machine, so
> > I started looking at cpufreq.
>
> The below seems to fix the problem for me, but I don't have enough
> clue to know if its the correct fix, please advise.

> - set_cyc2ns_scale(tsc_khz_ref, freq->cpu);
> + set_cyc2ns_scale(tsc_khz, freq->cpu);

hm, that too is due to the tsc.c unification - Alok Cc:-ed. Applied your
fix to x86/urgent.

Ingo
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