linux-kernel - [tip: sched/core] sched/smp: Use the SMP version of wake_up_new

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Message-ID: <174980024133.406.8508634242183643887.tip-bot2@tip-bot2>
Date: Fri, 13 Jun 2025 07:37:21 -0000
From: "tip-bot2 for Ingo Molnar" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Ingo Molnar <mingo@...nel.org>, Peter Zijlstra <peterz@...radead.org>,
 Dietmar Eggemann <dietmar.eggemann@....com>,
 Juri Lelli <juri.lelli@...hat.com>,
 Linus Torvalds <torvalds@...ux-foundation.org>, Mel Gorman <mgorman@...e.de>,
 Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
 Shrikanth Hegde <sshegde@...ux.ibm.com>, Steven Rostedt <rostedt@...dmis.org>,
 Valentin Schneider <vschneid@...hat.com>,
 Vincent Guittot <vincent.guittot@...aro.org>, x86@...nel.org,
 linux-kernel@...r.kernel.org
Subject:
 [tip: sched/core] sched/smp: Use the SMP version of wake_up_new_task()

The following commit has been merged into the sched/core branch of tip:

Commit-ID:     588467616c88b12657f6ebe7306d830c272fe054
Gitweb:        https://git.kernel.org/tip/588467616c88b12657f6ebe7306d830c272fe054
Author:        Ingo Molnar <mingo@...nel.org>
AuthorDate:    Wed, 28 May 2025 10:09:06 +02:00
Committer:     Ingo Molnar <mingo@...nel.org>
CommitterDate: Fri, 13 Jun 2025 08:47:19 +02:00

sched/smp: Use the SMP version of wake_up_new_task()

Simplify the scheduler by making CONFIG_SMP=y code in wake_up_new_task()
unconditional.

Signed-off-by: Ingo Molnar <mingo@...nel.org>
Acked-by: Peter Zijlstra <peterz@...radead.org>
Cc: Dietmar Eggemann <dietmar.eggemann@....com>
Cc: Juri Lelli <juri.lelli@...hat.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Mel Gorman <mgorman@...e.de>
Cc: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc: Shrikanth Hegde <sshegde@...ux.ibm.com>
Cc: Steven Rostedt <rostedt@...dmis.org>
Cc: Valentin Schneider <vschneid@...hat.com>
Cc: Vincent Guittot <vincent.guittot@...aro.org>
Link: https://lore.kernel.org/r/20250528080924.2273858-26-mingo@kernel.org
---
 kernel/sched/core.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 82b7cdb..c108b5c 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -4824,7 +4824,6 @@ void wake_up_new_task(struct task_struct *p)
 	activate_task(rq, p, ENQUEUE_NOCLOCK | ENQUEUE_INITIAL);
 	trace_sched_wakeup_new(p);
 	wakeup_preempt(rq, p, wake_flags);
-#ifdef CONFIG_SMP
 	if (p->sched_class->task_woken) {
 		/*
 		 * Nothing relies on rq->lock after this, so it's fine to
@@ -4834,7 +4833,6 @@ void wake_up_new_task(struct task_struct *p)
 		p->sched_class->task_woken(rq, p);
 		rq_repin_lock(rq, &rf);
 	}
-#endif
 	task_rq_unlock(rq, p, &rf);
 }