Messages in this thread | | | Date | Fri, 21 Apr 2017 11:54:21 +0200 | From | luca abeni <> | Subject | Re: [PATCH] sched/deadline: fix switching to -deadline |
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On Fri, 21 Apr 2017 11:42:40 +0200 luca abeni <luca.abeni@santannapisa.it> wrote: [...] > > > diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c > > > index a2ce590..ec53d24 100644 > > > --- a/kernel/sched/deadline.c > > > +++ b/kernel/sched/deadline.c > > > @@ -950,6 +950,10 @@ enqueue_dl_entity(struct sched_dl_entity > > > *dl_se, update_dl_entity(dl_se, pi_se); > > > else if (flags & ENQUEUE_REPLENISH) > > > replenish_dl_entity(dl_se, pi_se); > > > + else if ((flags & ENQUEUE_RESTORE) && > > > > Not sure I understand how this works. AFAICT we are doing > > __sched_setscheduler() when we want to catch the case of a new > > dl_entity (SCHED_{OTHER,FIFO} -> SCHED_DEADLINE}, but queue_flags > > (which are passed to enqueue_task()) don't seem to have > > ENQUEUE_RESTORE set? > > I was under the impression sched_setscheduler() sets > ENQUEUE_RESTORE...
__sched_setscheduler() sets queue_flags to DEQUEUE_SAVE, which matches ENQUEUE_RESTORE (see comments in sched/sched.h), so things should work correctly, right?
Luca
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