linux-kernel - [PATCH 37/43] sched/smp: Use the SMP version of is_migration

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Message-ID: <20250528080924.2273858-38-mingo@kernel.org>
Date: Wed, 28 May 2025 10:09:18 +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 37/43] sched/smp: Use the SMP version of is_migration_disabled()

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/sched.h | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index 19808e09bd94..61a5f683c502 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -1300,11 +1300,7 @@ static inline int cpu_of(struct rq *rq)
 
 static inline bool is_migration_disabled(struct task_struct *p)
 {
-#ifdef CONFIG_SMP
 	return p->migration_disabled;
-#else
-	return false;
-#endif
 }
 
 DECLARE_PER_CPU_SHARED_ALIGNED(struct rq, runqueues);
-- 
2.45.2