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SubjectRe: [PATCH] sched/deadline: don't need to check throttled status when switched to dl
On 05/03/15 01:38, Wanpeng Li wrote:
> Ping Juri,

Yeah, I looked at it this morning. Looks good, thanks!

> On Thu, Feb 26, 2015 at 12:11:04PM +0800, Wanpeng Li wrote:
>> After commit 40767b0dc768 ("sched/deadline: Fix deadline parameter
>> modification handling"), deadline task throttled status is cleared
>> each time switch from dl, so throttled status always unset when
>> switch back, there is no need to check throttled status, this patch
>> drop the check.
>>
>> Signed-off-by: Wanpeng Li <wanpeng.li@linux.intel.com>

Acked-by: Juri Lelli <juri.lelli@arm.com>

>> ---
>> kernel/sched/deadline.c | 8 --------
>> 1 file changed, 8 deletions(-)
>>
>> diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
>> index ca391c0..cfb8fa7 100644
>> --- a/kernel/sched/deadline.c
>> +++ b/kernel/sched/deadline.c
>> @@ -1697,14 +1697,6 @@ static void switched_to_dl(struct rq *rq, struct task_struct *p)
>> {
>> int check_resched = 1;
>>
>> - /*
>> - * If p is throttled, don't consider the possibility
>> - * of preempting rq->curr, the check will be done right
>> - * after its runtime will get replenished.
>> - */
>> - if (unlikely(p->dl.dl_throttled))
>> - return;
>> -
>> if (task_on_rq_queued(p) && rq->curr != p) {
>> #ifdef CONFIG_SMP
>> if (p->nr_cpus_allowed > 1 && rq->dl.overloaded &&
>> --
>> 1.9.1
>



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