Re: [PATCH 2/7] sched: Update rq clock on nohz CPU before settingfair group shares

[Ingo Molnar]

* Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:

> I think Mike once tried something along the lines of keeping a per rq state that 
> got cleared at the end of schedule() but that doesn't catch things like the 
> migrate handlers I think.

We'd need a rq->clock.valid debug flag, which is set by a sched-clock update, and 
cleared by the end of all scheduler operations, not just schedule().

Then sched_clock() could have a pretty efficient assert in it. Are there bugs that 
such an approach would not catch?

Thaks,

	Ingo
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