Re: [PATCH v2] sched/pelt: fix false running accounting

[Peter Zijlstra]

On Tue, Jul 04, 2017 at 11:57:12AM +0200, Vincent Guittot wrote:
> On 4 July 2017 at 11:44, Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:

> > But but but, how can that happen? Should it not all be under the same
> > rq->lock and thus have only a single update_rq_clock() and thus be at
> > the same 'instant' ?
> 
> idle_balance() unlock rq->lock before calling  update_blocked_averages
> And update_blocked_averages() starts by calling update_rq_clock()

Ah indeed. Might want to clarify that point.