linux-kernel - [PATCH] sched: drop unused variable cpumask in mm_cid

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Message-Id: <20251002-sched-w1-v1-1-a6fdf549d179@linaro.org>
Date: Thu, 02 Oct 2025 12:23:09 +0100
From: André Draszik <andre.draszik@...aro.org>
To: Ingo Molnar <mingo@...hat.com>, Peter Zijlstra <peterz@...radead.org>, 
 Juri Lelli <juri.lelli@...hat.com>, 
 Vincent Guittot <vincent.guittot@...aro.org>, 
 Dietmar Eggemann <dietmar.eggemann@....com>, 
 Steven Rostedt <rostedt@...dmis.org>, Ben Segall <bsegall@...gle.com>, 
 Mel Gorman <mgorman@...e.de>, Valentin Schneider <vschneid@...hat.com>
Cc: Peter Griffin <peter.griffin@...aro.org>, 
 Tudor Ambarus <tudor.ambarus@...aro.org>, 
 Will McVicker <willmcvicker@...gle.com>, kernel-team@...roid.com, 
 linux-kernel@...r.kernel.org, 
 André Draszik <andre.draszik@...aro.org>
Subject: [PATCH] sched: drop unused variable cpumask in mm_cid_get()

When compiling with W=1, we get the following warning:

In file included from kernel/sched/rq-offsets.c:5:
kernel/sched/sched.h:3743:18: error: variable 'cpumask' set but not used [-Werror,-Wunused-but-set-variable]
 3743 |         struct cpumask *cpumask;
      |                         ^
1 error generated.

Simply drop the variable.

Signed-off-by: André Draszik <andre.draszik@...aro.org>
---
 kernel/sched/sched.h | 2 --
 1 file changed, 2 deletions(-)

diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index 1f5d07067f60a3195c11b0bfe203e027ebc3e3c5..361f9101cef97cde2b4cae963c3eed6e745283c8 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -3740,11 +3740,9 @@ static inline int mm_cid_get(struct rq *rq, struct task_struct *t,
 			     struct mm_struct *mm)
 {
 	struct mm_cid __percpu *pcpu_cid = mm->pcpu_cid;
-	struct cpumask *cpumask;
 	int cid;
 
 	lockdep_assert_rq_held(rq);
-	cpumask = mm_cidmask(mm);
 	cid = __this_cpu_read(pcpu_cid->cid);
 	if (mm_cid_is_valid(cid)) {
 		mm_cid_snapshot_time(rq, mm);

---
base-commit: 3b9b1f8df454caa453c7fb07689064edb2eda90a
change-id: 20251002-sched-w1-c45c284e1775

Best regards,
-- 
André Draszik <andre.draszik@...aro.org>