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

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Message-ID: <174980023420.406.3320852878387182188.tip-bot2@tip-bot2>
Date: Fri, 13 Jun 2025 07:37:14 -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
 sched_update_asym_prefer_cpu()

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

Commit-ID:     6c8d251621c131274fa05b46fc138f296b00f6e4
Gitweb:        https://git.kernel.org/tip/6c8d251621c131274fa05b46fc138f296b00f6e4
Author:        Ingo Molnar <mingo@...nel.org>
AuthorDate:    Wed, 28 May 2025 10:09:14 +02:00
Committer:     Ingo Molnar <mingo@...nel.org>
CommitterDate: Fri, 13 Jun 2025 08:47:21 +02:00

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

Simplify the scheduler by making CONFIG_SMP=y code in
sched_update_asym_prefer_cpu() 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/20250528080924.2273858-34-mingo@kernel.org
---
 kernel/sched/topology.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/kernel/sched/topology.c b/kernel/sched/topology.c
index f2c1016..8e06b1d 100644
--- a/kernel/sched/topology.c
+++ b/kernel/sched/topology.c
@@ -1323,7 +1323,6 @@ next:
 /* Update the "asym_prefer_cpu" when arch_asym_cpu_priority() changes. */
 void sched_update_asym_prefer_cpu(int cpu, int old_prio, int new_prio)
 {
-#ifdef CONFIG_SMP
 	int asym_prefer_cpu = cpu;
 	struct sched_domain *sd;
 
@@ -1373,7 +1372,6 @@ void sched_update_asym_prefer_cpu(int cpu, int old_prio, int new_prio)
 
 		WRITE_ONCE(sg->asym_prefer_cpu, asym_prefer_cpu);
 	}
-#endif /* CONFIG_SMP */
 }
 
 /*