Commit-ID:  af75d1a9a9f75bf030c2f35705f1ff6d226f96fe
Gitweb:     https://git.kernel.org/tip/af75d1a9a9f75bf030c2f35705f1ff6d226f96fe
Author:     Dietmar Eggemann <dietmar.eggem...@arm.com>
AuthorDate: Mon, 27 May 2019 07:21:15 +0100
Committer:  Ingo Molnar <mi...@kernel.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.eggem...@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <pet...@infradead.org>
Acked-by: Rik van Riel <r...@surriel.com>
Acked-by: Vincent Guittot <vincent.guit...@linaro.org>
Cc: Frederic Weisbecker <fweis...@gmail.com>
Cc: Linus Torvalds <torva...@linux-foundation.org>
Cc: Morten Rasmussen <morten.rasmus...@arm.com>
Cc: Patrick Bellasi <patrick.bell...@arm.com>
Cc: Peter Zijlstra <pet...@infradead.org>
Cc: Quentin Perret <quentin.per...@arm.com>
Cc: Thomas Gleixner <t...@linutronix.de>
Cc: Valentin Schneider <valentin.schnei...@arm.com>
Link: https://lkml.kernel.org/r/20190527062116.11512-7-dietmar.eggem...@arm.com
Signed-off-by: Ingo Molnar <mi...@kernel.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;
 

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