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SubjectRe: [patch] sched: implement cpu_clock(cpu) high-speed time source, take #2

* Jeremy Fitzhardinge <jeremy@goop.org> wrote:

> > how about the patch below instead? (which, unlike the first one,
> > happens to build and boot ;-)
>
> Yes, that should be fine if its just based on sched_clock. Presumably
> that means that any architecture (eg, s390) which chooses to implement
> sched_clock as unstolen time will get good behaviour from softlockup
> as well as the scheduler.

yeah, that's the idea.

> How does this interact with the sched_clock changes Andi just posted?

those changes pose no problem, and they are largely orthogonal. Andi's
changes should improve the quality of sched_clock() on some boxes that
encounter a cpu frequency transition that makes the TSC readout
unreliable.

Ingo
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