linux-kernel - [PATCH] sched/fair: move nohz definition to where it's used

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Date:   Thu, 23 Jun 2022 21:03:25 +0800
From:   Chengming Zhou <zhouchengming@...edance.com>
To:     mingo@...hat.com, peterz@...radead.org, juri.lelli@...hat.com,
        vincent.guittot@...aro.org, dietmar.eggemann@....com,
        rostedt@...dmis.org, bsegall@...gle.com, mgorman@...e.de,
        bristot@...hat.com, vschneid@...hat.com
Cc:     linux-kernel@...r.kernel.org,
        Chengming Zhou <zhouchengming@...edance.com>
Subject: [PATCH] sched/fair: move nohz definition to where it's used

The nohz definition is too far from where it's used, just move it
to the right place. No functional change.

Signed-off-by: Chengming Zhou <zhouchengming@...edance.com>
---
 kernel/sched/fair.c | 21 ++++++++-------------
 1 file changed, 8 insertions(+), 13 deletions(-)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 8bed75757e65..01f7047c41d7 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -5842,19 +5842,6 @@ static void dequeue_task_fair(struct rq *rq, struct task_struct *p, int flags)
 DEFINE_PER_CPU(cpumask_var_t, load_balance_mask);
 DEFINE_PER_CPU(cpumask_var_t, select_idle_mask);
 
-#ifdef CONFIG_NO_HZ_COMMON
-
-static struct {
-	cpumask_var_t idle_cpus_mask;
-	atomic_t nr_cpus;
-	int has_blocked;		/* Idle CPUS has blocked load */
-	int needs_update;		/* Newly idle CPUs need their next_balance collated */
-	unsigned long next_balance;     /* in jiffy units */
-	unsigned long next_blocked;	/* Next update of blocked load in jiffies */
-} nohz ____cacheline_aligned;
-
-#endif /* CONFIG_NO_HZ_COMMON */
-
 static unsigned long cpu_load(struct rq *rq)
 {
 	return cfs_rq_load_avg(&rq->cfs);
@@ -10374,6 +10361,14 @@ static inline int on_null_domain(struct rq *rq)
  * - HK_TYPE_MISC CPUs are used for this task, because HK_TYPE_SCHED not set
  *   anywhere yet.
  */
+static struct {
+	cpumask_var_t idle_cpus_mask;
+	atomic_t nr_cpus;
+	int has_blocked;		/* Idle CPUS has blocked load */
+	int needs_update;		/* Newly idle CPUs need their next_balance collated */
+	unsigned long next_balance;     /* in jiffy units */
+	unsigned long next_blocked;	/* Next update of blocked load in jiffies */
+} nohz ____cacheline_aligned;
 
 static inline int find_new_ilb(void)
 {
-- 
2.36.1