Re: [PATCH v2] sched/pelt: fix false running accounting
From: Peter Zijlstra
Date: Tue Jul 04 2017 - 07:07:38 EST
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.