Le Fri, 7 Dec 2007 14:55:25 +0100,
Ingo Molnar <[email protected]> a écrit :
> Firstly, we dont need the 'offset' anymore because cpu_clock() maintains
> offsets itself.
Yes, but a lower quality one. __update_rq_clock tries to compensate
large jumping clocks with a jiffy resolution, while my offset arranges
for a very smooth frequency transition.
I agree with keeping a single offset, but I liked the fact that with my
patch on frequency change, the clock had no jump at all.
> + * ns += offset to avoid sched_clock jumps with cpufreq
I guess this needs to go away if I don't make my point :-(
> + printk("CPU#%d: changed cyc2ns scale from %ld to %ld\n",
> + cpu, prev_scale, *scale);
Pointing it out just to be sure it does not end in the final version ;-)
Thanks for cleaning up my mess ;-)
--
Guillaume
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