Messages in this thread | | | Date | Thu, 12 Apr 2007 10:41:51 -0700 | From | Jeremy Fitzhardinge <> | Subject | Re: [PATCH] i386 tsc: remove xtime_lock'ing around cpufreq notifier |
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Andi Kleen wrote: > Ok. I think it's better to just fix sched_clock() again than to > add another one. I can probably > eliminate the ktime_get() and use something based on jiffies. That will > be inaccurate for the instable case of course. > > I will do that later today.
sched_clock seems a bit weird to use. In the pv_ops world, it only counts unstolen time, and it is therefore inherently per-cpu. The timestamps should be at least system-wide monotonic.
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