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

From: Ingo Molnar
Date: Wed Apr 10 2013 - 07:51:06 EST

* Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:

> On Wed, 2013-04-10 at 13:06 +0200, Ingo Molnar wrote:
> > There's just a handful of high level entry points, right? schedule(), wakeup,
> > scheduler tick, maybe notifiers - anything else?
> I suppose there's some cgroup muck and the various system calls; most
> of them should be covered if we take some lower level primitives or so.
> We could 'simply' hijack rq->lock and clear the state every time we
> acquire or release it.. maybe have an exemption for the balance double
> lock ops.

That would be feasible ...


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