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From: Qais Yousef <qais.yousef@arm.com>
To: Ingo Molnar <mingo@kernel.org>,
	Peter Zijlstra <peterz@infradead.org>,
	Steven Rostedt <rostedt@goodmis.org>,
	Dietmar Eggemann <dietmar.eggemann@arm.com>,
	Pavan Kondeti <pkondeti@codeaurora.org>
Cc: Juri Lelli <juri.lelli@redhat.com>,
	Vincent Guittot <vincent.guittot@linaro.org>,
	Ben Segall <bsegall@google.com>, Mel Gorman <mgorman@suse.de>,
	linux-kernel@vger.kernel.org, Qais Yousef <qais.yousef@arm.com>
Subject: [PATCH v2 6/6] sched/rt: Remove unnecessary assignment in inc/dec_rt_migration
Date: Sun, 23 Feb 2020 18:40:01 +0000	[thread overview]
Message-ID: <20200223184001.14248-7-qais.yousef@arm.com> (raw)
In-Reply-To: <20200223184001.14248-1-qais.yousef@arm.com>

The statement

	rt_rq = &rq_of_rt_rq(rt_rq)->rt

Was just dereferencing rt_rq to get a pointer to itself. Which is a NOP.
Remove it.

Signed-off-by: Qais Yousef <qais.yousef@arm.com>
---
 kernel/sched/rt.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/kernel/sched/rt.c b/kernel/sched/rt.c
index b35e49cdafcc..520e84993fe7 100644
--- a/kernel/sched/rt.c
+++ b/kernel/sched/rt.c
@@ -343,7 +343,6 @@ static void inc_rt_migration(struct sched_rt_entity *rt_se, struct rt_rq *rt_rq)
 		return;
 
 	p = rt_task_of(rt_se);
-	rt_rq = &rq_of_rt_rq(rt_rq)->rt;
 
 	rt_rq->rt_nr_total++;
 	if (p->nr_cpus_allowed > 1) {
@@ -368,7 +367,6 @@ static void dec_rt_migration(struct sched_rt_entity *rt_se, struct rt_rq *rt_rq)
 		return;
 
 	p = rt_task_of(rt_se);
-	rt_rq = &rq_of_rt_rq(rt_rq)->rt;
 
 	rt_rq->rt_nr_total--;
 	if (p->nr_cpus_allowed > 1) {
-- 
2.17.1


  parent reply	other threads:[~2020-02-23 18:40 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-02-23 18:39 [PATCH v2 0/6] RT Capacity Awareness Fixes & Improvements Qais Yousef
2020-02-23 18:39 ` [PATCH v2 1/6] sched/rt: cpupri_find: implement fallback mechanism for !fit case Qais Yousef
2020-02-23 18:39 ` [PATCH v2 2/6] sched/rt: Re-instate old behavior in select_task_rq_rt Qais Yousef
2020-02-25 15:21   ` Dietmar Eggemann
2020-02-26 11:34     ` Qais Yousef
2020-02-23 18:39 ` [PATCH v2 3/6] sched/rt: Optimize cpupri_find on non-heterogenous systems Qais Yousef
2020-02-23 18:39 ` [PATCH v2 4/6] sched/rt: allow pulling unfitting task Qais Yousef
2020-02-23 18:40 ` [PATCH v2 5/6] sched/rt: Better manage pushing unfit tasks on wakeup Qais Yousef
2020-02-24  6:10   ` Pavan Kondeti
2020-02-24 12:11     ` Qais Yousef
2020-02-24 16:04       ` Pavan Kondeti
2020-02-24 17:41         ` Qais Yousef
2020-02-25  3:55           ` Pavan Kondeti
2020-02-26 16:02             ` Qais Yousef
2020-02-27  3:36               ` Pavan Kondeti
2020-02-27 10:29                 ` Qais Yousef
2020-02-23 18:40 ` Qais Yousef [this message]
2020-02-23 23:16   ` [PATCH v2 6/6] sched/rt: Remove unnecessary assignment in inc/dec_rt_migration Dietmar Eggemann
2020-02-24 12:31     ` Qais Yousef
2020-02-24 13:03       ` Dietmar Eggemann
2020-02-24 13:47         ` Qais Yousef

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