Re: [PATCH] sched/deadline: Always calculate end of period on sched_yield()

[Steven Rostedt]

On Tue, 23 Feb 2016 13:28:22 +0100
Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote:

> On Fri, Feb 12, 2016 at 06:10:20PM -0500, Steven Rostedt wrote:
> > diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
> > index cd64c979d0e1..1dd180cda574 100644
> > --- a/kernel/sched/deadline.c
> > +++ b/kernel/sched/deadline.c
> > @@ -735,7 +735,7 @@ static void update_curr_dl(struct rq *rq)
> >  	 * approach need further study.
> >  	 */
> >  	delta_exec = rq_clock_task(rq) - curr->se.exec_start;
> > -	if (unlikely((s64)delta_exec <= 0))
> > +	if (unlikely((s64)delta_exec <= 0 && !dl_se->dl_yielded))
> >  		return;
> >  
> >  	schedstat_set(curr->se.statistics.exec_max,  
> 
> 
> Would something like this make sense instead?
> 

I'll test it and see if it works.

-- Steve