linux-kernel - [tip: sched/core] sched: Remove unnecessary variable from schedule

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Date:   Wed, 10 Mar 2021 11:26:20 -0000
From:   "tip-bot2 for Edmundo Carmona Antoranz" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Edmundo Carmona Antoranz <eantoranz@...il.com>,
        "Peter Zijlstra (Intel)" <peterz@...radead.org>, x86@...nel.org,
        linux-kernel@...r.kernel.org
Subject: [tip: sched/core] sched: Remove unnecessary variable from schedule_tail()

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

Commit-ID:     13c2235b2b2870675195f0b551275d1abdd81068
Gitweb:        https://git.kernel.org/tip/13c2235b2b2870675195f0b551275d1abdd81068
Author:        Edmundo Carmona Antoranz <eantoranz@...il.com>
AuthorDate:    Sat, 06 Mar 2021 15:07:39 -06:00
Committer:     Peter Zijlstra <peterz@...radead.org>
CommitterDate: Wed, 10 Mar 2021 09:51:49 +01:00

sched: Remove unnecessary variable from schedule_tail()

Since 565790d28b1 (sched: Fix balance_callback(), 2020-05-11), there
is no longer a need to reuse the result value of the call to finish_task_switch()
inside schedule_tail(), therefore the variable used to hold that value
(rq) is no longer needed.

Signed-off-by: Edmundo Carmona Antoranz <eantoranz@...il.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Link: https://lkml.kernel.org/r/20210306210739.1370486-1-eantoranz@gmail.com
---
 kernel/sched/core.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index d2629fd..28c4df6 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -4253,8 +4253,6 @@ static struct rq *finish_task_switch(struct task_struct *prev)
 asmlinkage __visible void schedule_tail(struct task_struct *prev)
 	__releases(rq->lock)
 {
-	struct rq *rq;
-
 	/*
 	 * New tasks start with FORK_PREEMPT_COUNT, see there and
 	 * finish_task_switch() for details.
@@ -4264,7 +4262,7 @@ asmlinkage __visible void schedule_tail(struct task_struct *prev)
 	 * PREEMPT_COUNT kernels).
 	 */
 
-	rq = finish_task_switch(prev);
+	finish_task_switch(prev);
 	preempt_enable();
 
 	if (current->set_child_tid)