linux-kernel - [tip:sched/core] sched/fair: Remove sgs->sum_weighted

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Date:   Mon, 3 Jun 2019 06:05:40 -0700
From:   tip-bot for Dietmar Eggemann <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     quentin.perret@....com, linux-kernel@...r.kernel.org,
        tglx@...utronix.de, torvalds@...ux-foundation.org,
        patrick.bellasi@....com, dietmar.eggemann@....com, hpa@...or.com,
        mingo@...nel.org, morten.rasmussen@....com, peterz@...radead.org,
        riel@...riel.com, fweisbec@...il.com, valentin.schneider@....com,
        vincent.guittot@...aro.org
Subject: [tip:sched/core] sched/fair: Remove sgs->sum_weighted_load

Commit-ID:  af75d1a9a9f75bf030c2f35705f1ff6d226f96fe
Gitweb:     https://git.kernel.org/tip/af75d1a9a9f75bf030c2f35705f1ff6d226f96fe
Author:     Dietmar Eggemann <dietmar.eggemann@....com>
AuthorDate: Mon, 27 May 2019 07:21:15 +0100
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Mon, 3 Jun 2019 11:49:41 +0200

sched/fair: Remove sgs->sum_weighted_load

Since sg_lb_stats::sum_weighted_load is now identical with
sg_lb_stats::group_load remove it and replace its use case
(calculating load per task) with the latter.

Signed-off-by: Dietmar Eggemann <dietmar.eggemann@....com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Acked-by: Rik van Riel <riel@...riel.com>
Acked-by: Vincent Guittot <vincent.guittot@...aro.org>
Cc: Frederic Weisbecker <fweisbec@...il.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Morten Rasmussen <morten.rasmussen@....com>
Cc: Patrick Bellasi <patrick.bellasi@....com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Quentin Perret <quentin.perret@....com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Valentin Schneider <valentin.schneider@....com>
Link: https://lkml.kernel.org/r/20190527062116.11512-7-dietmar.eggemann@arm.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 kernel/sched/fair.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 5b9691e5ea59..7f8d477f90fe 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -7577,7 +7577,6 @@ static unsigned long task_h_load(struct task_struct *p)
 struct sg_lb_stats {
 	unsigned long avg_load; /*Avg load across the CPUs of the group */
 	unsigned long group_load; /* Total load over the CPUs of the group */
-	unsigned long sum_weighted_load; /* Weighted load of group's tasks */
 	unsigned long load_per_task;
 	unsigned long group_capacity;
 	unsigned long group_util; /* Total utilization of the group */
@@ -7944,7 +7943,6 @@ static inline void update_sg_lb_stats(struct lb_env *env,
 		sgs->nr_numa_running += rq->nr_numa_running;
 		sgs->nr_preferred_running += rq->nr_preferred_running;
 #endif
-		sgs->sum_weighted_load += weighted_cpuload(rq);
 		/*
 		 * No need to call idle_cpu() if nr_running is not 0
 		 */
@@ -7963,7 +7961,7 @@ static inline void update_sg_lb_stats(struct lb_env *env,
 	sgs->avg_load = (sgs->group_load*SCHED_CAPACITY_SCALE) / sgs->group_capacity;
 
 	if (sgs->sum_nr_running)
-		sgs->load_per_task = sgs->sum_weighted_load / sgs->sum_nr_running;
+		sgs->load_per_task = sgs->group_load / sgs->sum_nr_running;
 
 	sgs->group_weight = group->group_weight;