]> git.ipfire.org Git - thirdparty/kernel/linux.git/commitdiff
sched/smp: Use the SMP version of the deadline scheduling class
authorIngo Molnar <mingo@kernel.org>
Wed, 28 May 2025 08:09:10 +0000 (10:09 +0200)
committerIngo Molnar <mingo@kernel.org>
Fri, 13 Jun 2025 06:47:20 +0000 (08:47 +0200)
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

index bf9b70a3ff95b4483341eb484caa9428a07c9e5b..0f30697ad7956d5a8976dd5e660a0ca74bf6581c 100644 (file)
@@ -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