linux-kernel - [PATCH] sched/fair: Remove the redundant critical section

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Message-Id: <20201110134101.434928-1-arch0.zheng@gmail.com>
Date:   Tue, 10 Nov 2020 21:41:01 +0800
From:   Qi Zheng <arch0.zheng@...il.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
Cc:     linux-kernel@...r.kernel.org, Qi Zheng <arch0.zheng@...il.com>
Subject: [PATCH] sched/fair: Remove the redundant critical section

Now there is nothing in the critical section, so remove it.

Signed-off-by: Qi Zheng <arch0.zheng@...il.com>
---
 kernel/sched/fair.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 52cacfc62922..06c4f3430e95 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -5114,9 +5114,6 @@ static void do_sched_cfs_slack_timer(struct cfs_bandwidth *cfs_b)
 		return;
 
 	distribute_cfs_runtime(cfs_b);
-
-	raw_spin_lock_irqsave(&cfs_b->lock, flags);
-	raw_spin_unlock_irqrestore(&cfs_b->lock, flags);
 }
 
 /*
-- 
2.25.1