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

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Message-ID: <174980023595.406.16508743799112441499.tip-bot2@tip-bot2>
Date: Fri, 13 Jun 2025 07:37:15 -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 schedstats

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

Commit-ID:     9d9af2372f2a46242fd5e827973235f40f31a706
Gitweb:        https://git.kernel.org/tip/9d9af2372f2a46242fd5e827973235f40f31a706
Author:        Ingo Molnar <mingo@...nel.org>
AuthorDate:    Wed, 28 May 2025 10:09:12 +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 schedstats

Simplify the scheduler by making CONFIG_SMP=y schedstats
debugging output 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/20250528080924.2273858-32-mingo@kernel.org
---
 kernel/sched/stats.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/kernel/sched/stats.c b/kernel/sched/stats.c
index 86acd37..d1c9429 100644
--- a/kernel/sched/stats.c
+++ b/kernel/sched/stats.c
@@ -115,10 +115,8 @@ static int show_schedstat(struct seq_file *seq, void *v)
 		seq_printf(seq, "timestamp %lu\n", jiffies);
 	} else {
 		struct rq *rq;
-#ifdef CONFIG_SMP
 		struct sched_domain *sd;
 		int dcount = 0;
-#endif
 		cpu = (unsigned long)(v - 2);
 		rq = cpu_rq(cpu);
 
@@ -133,7 +131,6 @@ static int show_schedstat(struct seq_file *seq, void *v)
 
 		seq_printf(seq, "\n");
 
-#ifdef CONFIG_SMP
 		/* domain-specific stats */
 		rcu_read_lock();
 		for_each_domain(cpu, sd) {
@@ -164,7 +161,6 @@ static int show_schedstat(struct seq_file *seq, void *v)
 			    sd->ttwu_move_balance);
 		}
 		rcu_read_unlock();
-#endif /* CONFIG_SMP */
 	}
 	return 0;
 }