On Wed, Jun 03, 2015 at 01:42:41PM +0300, Kirill Tkhai wrote:
> [resend]
>
> 03.06.2015, 10:32, "Peter Zijlstra" :
> > On Tue, Jun 02, 2015 at 07:27:19PM +0300, Kirill Tkhai wrote:
> >>> + * task_dead_dl() will cancel our timer if we happen to die while
> >>> + * its still pending.
> >> task_de
[resend]
03.06.2015, 10:32, "Peter Zijlstra" :
> On Tue, Jun 02, 2015 at 07:27:19PM +0300, Kirill Tkhai wrote:
>>> + * task_dead_dl() will cancel our timer if we happen to die while
>>> + * its still pending.
>> task_dead_dl() is called for tasks of deadline class only. So if we do that,
>> th
В Ср, 03/06/2015 в 09:32 +0200, Peter Zijlstra пишет:
> On Tue, Jun 02, 2015 at 07:27:19PM +0300, Kirill Tkhai wrote:
> > > + * task_dead_dl() will cancel our timer if we happen to die while
> > > + * its still pending.
> >
> > task_dead_dl() is called for tasks of deadline class only. So if we
On Tue, Jun 02, 2015 at 07:27:19PM +0300, Kirill Tkhai wrote:
> > +* task_dead_dl() will cancel our timer if we happen to die while
> > +* its still pending.
>
> task_dead_dl() is called for tasks of deadline class only. So if we do that,
> the timer may be executed after final task's dead
В Вт, 02/06/2015 в 18:07 +0200, Peter Zijlstra пишет:
On Tue, Jun 02, 2015 at 04:27:10PM +0200, Peter Zijlstra wrote:
> > On Tue, 2015-06-02 at 16:58 +0300, Kirill Tkhai wrote:
> > > 01.06.2015, 17:13, "Peter Zijlstra" :
> >
> > > > @@ -1010,7 +1014,7 @@ static inline void check_class_changed(s
>
On Tue, Jun 02, 2015 at 04:27:10PM +0200, Peter Zijlstra wrote:
> On Tue, 2015-06-02 at 16:58 +0300, Kirill Tkhai wrote:
> > 01.06.2015, 17:13, "Peter Zijlstra" :
>
> > > @@ -1010,7 +1014,7 @@ static inline void check_class_changed(s
> > > if (prev_class != p->sched_class) {
> > >
On Tue, 2015-06-02 at 16:58 +0300, Kirill Tkhai wrote:
> 01.06.2015, 17:13, "Peter Zijlstra" :
> > @@ -1010,7 +1014,7 @@ static inline void check_class_changed(s
> > if (prev_class != p->sched_class) {
> > if (prev_class->switched_from)
> > prev_c
01.06.2015, 17:13, "Peter Zijlstra" :
> In order to remove dropping rq->lock from the
> switched_{to,from}()/prio_changed() sched_class methods, run the
> balance callbacks after it.
>
> We need to remove dropping rq->lock because its buggy,
> suppose using sched_setattr()/sched_setscheduler() to c
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