Re: [patch] sched: implement cpu_clock(cpu) high-speed timesource, take #2

[Ingo Molnar]

* Jeremy Fitzhardinge <jeremy@xxxxxxxx> 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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