The following commit has been merged into the sched/core branch of tip:
Commit-ID: 6324dce8f6262ec2049494af311e5418bc733341
Gitweb: https://git.kernel.org/tip/6324dce8f6262ec2049494af311e5418bc733341
Author: Ingo Molnar <mingo@kernel.org>
AuthorDate: Wed, 28 May 2025 10:09:10 +02:00
Committer: Ingo Molnar <mingo@kernel.org>
CommitterDate: Fri, 13 Jun 2025 08:47:20 +02:00
sched/smp: Use the SMP version of the deadline scheduling class
Simplify the scheduler by making CONFIG_SMP=y code
in prio_changed_dl() unconditional.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Cc: Dietmar Eggemann <dietmar.eggemann@arm.com>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Shrikanth Hegde <sshegde@linux.ibm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Valentin Schneider <vschneid@redhat.com>
Cc: Vincent Guittot <vincent.guittot@linaro.org>
Link: https://lore.kernel.org/r/20250528080924.2273858-30-mingo@kernel.org
---
kernel/sched/deadline.c | 8 --------
1 file changed, 8 deletions(-)
diff --git a/kernel/sched/deadline.c b/kernel/sched/deadline.c
index bf9b70a..0f30697 100644
--- a/kernel/sched/deadline.c
+++ b/kernel/sched/deadline.c
@@ -3005,7 +3005,6 @@ static void prio_changed_dl(struct rq *rq, struct task_struct *p,
if (!task_on_rq_queued(p))
return;
-#ifdef CONFIG_SMP
/*
* This might be too much, but unfortunately
* we don't have the old deadline value, and
@@ -3034,13 +3033,6 @@ static void prio_changed_dl(struct rq *rq, struct task_struct *p,
dl_time_before(p->dl.deadline, rq->curr->dl.deadline))
resched_curr(rq);
}
-#else /* !CONFIG_SMP: */
- /*
- * We don't know if p has a earlier or later deadline, so let's blindly
- * set a (maybe not needed) rescheduling point.
- */
- resched_curr(rq);
-#endif /* !CONFIG_SMP */
}
#ifdef CONFIG_SCHED_CORE