From: Juri Lelli <juri.lelli@arm.com>
To: Wanpeng Li <wanpeng.li@linux.intel.com>,
Ingo Molnar <mingo@redhat.com>,
Peter Zijlstra <peterz@infradead.org>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"juri.lelli@gmail.com" <juri.lelli@gmail.com>
Subject: Re: [PATCH 4/6] sched/dl: push task away if the deadline is equal to curr during wakeup
Date: Wed, 29 Oct 2014 17:08:49 +0000 [thread overview]
Message-ID: <54511F21.5090506@arm.com> (raw)
In-Reply-To: <1414374067-7209-4-git-send-email-wanpeng.li@linux.intel.com>
Hi,
On 27/10/14 01:41, Wanpeng Li wrote:
> This patch pushes task away if the dealine of the task is equal
> to current during wake up. The same behavior as rt class.
>
Right.
Thanks,
- Juri
> Signed-off-by: Wanpeng Li <wanpeng.li@linux.intel.com>
> ---
> kernel/sched/deadline.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
> index aa7c27f..97141e2 100644
> --- a/kernel/sched/deadline.c
> +++ b/kernel/sched/deadline.c
> @@ -1492,7 +1492,7 @@ static void task_woken_dl(struct rq *rq, struct task_struct *p)
> p->nr_cpus_allowed > 1 &&
> dl_task(rq->curr) &&
> (rq->curr->nr_cpus_allowed < 2 ||
> - dl_entity_preempt(&rq->curr->dl, &p->dl))) {
> + !dl_entity_preempt(&p->dl, &rq->curr->dl))) {
> push_dl_tasks(rq);
> }
> }
>
next prev parent reply other threads:[~2014-10-29 17:08 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-27 1:41 [PATCH 1/6] sched/rt: check if curr can be pushed/pulled somewhere else in advance Wanpeng Li
2014-10-27 1:41 ` [PATCH 2/6] sched/dl: fix yield task artificial overrun Wanpeng Li
2014-10-29 16:33 ` Juri Lelli
2014-10-29 22:49 ` Wanpeng Li
2014-10-30 10:04 ` Juri Lelli
2014-10-27 1:41 ` [PATCH 3/6] sched/dl: add deadline rq status print Wanpeng Li
2014-10-29 16:52 ` Juri Lelli
2014-10-29 22:52 ` Wanpeng Li
2014-10-27 1:41 ` [PATCH 4/6] sched/dl: push task away if the deadline is equal to curr during wakeup Wanpeng Li
2014-10-29 17:08 ` Juri Lelli [this message]
2014-10-27 1:41 ` [PATCH 5/6] sched/dl: reschedule if successfully pull earlier deadline task Wanpeng Li
2014-10-29 22:59 ` Wanpeng Li
2014-10-30 10:21 ` Juri Lelli
2014-10-30 13:12 ` Wanpeng Li
2014-10-30 14:42 ` Juri Lelli
2014-10-31 15:37 ` Peter Zijlstra
2014-10-27 1:41 ` [PATCH 6/6] sched/dl: don't check CONFIG_SMP in switched_from_dl Wanpeng Li
2014-10-30 10:29 ` Juri Lelli
2014-10-29 22:57 ` [PATCH 1/6] sched/rt: check if curr can be pushed/pulled somewhere else in advance Wanpeng Li
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