linux-kernel - [PATCH] sched: Optimize unused integer return values

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Message-ID: <20220422070658.GA24149@localhost.localdomain>
Date:   Fri, 22 Apr 2022 15:06:58 +0800
From:   Li kunyu <kunyu@...china.com>
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>,
        Daniel Bristot de Oliveira <bristot@...hat.com>
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH] sched: Optimize unused integer return values

sched: Optimize unused integer return values

Signed-off-by: Li kunyu<kunyu@...china.com>
---
 kernel/sched/core.c  | 3 +--
 kernel/sched/sched.h | 4 ++--
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 51efaabac3e4..a71d09d6bb75 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -5491,11 +5491,10 @@ static void sched_tick_stop(int cpu)
 }
 #endif /* CONFIG_HOTPLUG_CPU */
 
-int __init sched_tick_offload_init(void)
+void __init sched_tick_offload_init(void)
 {
 	tick_work_cpu = alloc_percpu(struct tick_work);
 	BUG_ON(!tick_work_cpu);
-	return 0;
 }
 
 #else /* !CONFIG_NO_HZ_FULL */
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index 8dccb34eb190..850e25f7460d 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -2326,7 +2326,7 @@ extern void post_init_entity_util_avg(struct task_struct *p);
 
 #ifdef CONFIG_NO_HZ_FULL
 extern bool sched_can_stop_tick(struct rq *rq);
-extern int __init sched_tick_offload_init(void);
+extern void __init sched_tick_offload_init(void);
 
 /*
  * Tick may be needed by tasks in the runqueue depending on their policy and
@@ -2346,7 +2346,7 @@ static inline void sched_update_tick_dependency(struct rq *rq)
 		tick_nohz_dep_set_cpu(cpu, TICK_DEP_BIT_SCHED);
 }
 #else
-static inline int sched_tick_offload_init(void) { return 0; }
+static inline void sched_tick_offload_init(void) { }
 static inline void sched_update_tick_dependency(struct rq *rq) { }
 #endif
 
-- 
2.18.2