linux-kernel - [PATCH 25/43] sched/smp: Use the SMP version of wake_up_new

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Message-ID: <20250528080924.2273858-26-mingo@kernel.org>
Date: Wed, 28 May 2025 10:09:06 +0200
From: Ingo Molnar <mingo@...nel.org>
To: linux-kernel@...r.kernel.org
Cc: Dietmar Eggemann <dietmar.eggemann@....com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Shrikanth Hegde <sshegde@...ux.ibm.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Valentin Schneider <vschneid@...hat.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Mel Gorman <mgorman@...e.de>,
	Vincent Guittot <vincent.guittot@...aro.org>,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
	Ingo Molnar <mingo@...nel.org>,
	Juri Lelli <juri.lelli@...hat.com>
Subject: [PATCH 25/43] sched/smp: Use the SMP version of wake_up_new_task()

Simplify the scheduler by making formerly SMP-only primitives and data
structures unconditional.

Signed-off-by: Ingo Molnar <mingo@...nel.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: Peter Zijlstra <peterz@...radead.org>
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>
---
 kernel/sched/core.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 9eefc74f35a8..5a77afcbb60b 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -4820,7 +4820,6 @@ 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
@@ -4830,7 +4829,6 @@ 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);
 }
 
-- 
2.45.2