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authorWanpeng Li <wanpeng.li@linux.intel.com>2015-03-17 19:15:30 +0800
committerIngo Molnar <mingo@kernel.org>2015-03-27 09:36:12 +0100
commitbd4bde14b93cce8fa77765ff709e0be55abdba2c (patch)
treeaec69388085407ee49200e720d6359d0b7945461
parentd4573c3e1c992668f5dcd57d1c2ced56ae9650b9 (diff)
sched/deadline: Avoid a superfluous check
Since commit 40767b0dc768 ("sched/deadline: Fix deadline parameter modification handling") we clear the thottled state when switching from a dl task, therefore we should never find it set in switching to a dl task. Signed-off-by: Wanpeng Li <wanpeng.li@linux.intel.com> [ Improved the changelog. ] Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Juri Lelli <juri.lelli@arm.com> Link: http://lkml.kernel.org/r/1426590931-4639-1-git-send-email-wanpeng.li@linux.intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
-rw-r--r--kernel/sched/deadline.c8
1 files changed, 0 insertions, 8 deletions
diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
index 0a81a954c041..24c18dc10fd7 100644
--- a/kernel/sched/deadline.c
+++ b/kernel/sched/deadline.c
@@ -1665,14 +1665,6 @@ 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 &&