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| author | Wanpeng Li <wanpeng.li@linux.intel.com> | 2014-10-31 06:39:35 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-11-04 07:17:55 +0100 |
| commit | cd66091162d34f589631a23bbe0ed214798245b4 (patch) | |
| tree | 00298f425b985d1a3c0f2ca91a1e2d343f58381f /kernel/sched | |
| parent | 6b0a563f3a534827c1b56e53c3fd0fccec3c7895 (diff) | |
| download | blackbird-op-linux-cd66091162d34f589631a23bbe0ed214798245b4.tar.gz blackbird-op-linux-cd66091162d34f589631a23bbe0ed214798245b4.zip | |
sched/deadline: Reschedule from switched_from_dl() after a successful pull
In switched_from_dl() we have to issue a resched if we successfully
pulled some task from other cpus. This patch also aligns the behavior
with -rt.
Suggested-by: Juri Lelli <juri.lelli@arm.com>
Signed-off-by: Wanpeng Li <wanpeng.li@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Kirill Tkhai <ktkhai@parallels.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/1414708776-124078-5-git-send-email-wanpeng.li@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched')
| -rw-r--r-- | kernel/sched/deadline.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c index e7779b3feec4..362ab1f886b0 100644 --- a/kernel/sched/deadline.c +++ b/kernel/sched/deadline.c @@ -1643,8 +1643,11 @@ static void switched_from_dl(struct rq *rq, struct task_struct *p) * this is the right place to try to pull some other one * from an overloaded cpu, if any. */ - if (!rq->dl.dl_nr_running) - pull_dl_task(rq); + if (!task_on_rq_queued(p) || rq->dl.dl_nr_running) + return; + + if (pull_dl_task(rq)) + resched_curr(rq); #endif } |
