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 <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Acked-by: Rik van Riel <[email protected]>
Acked-by: Vincent Guittot <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Morten Rasmussen <[email protected]>
Cc: Patrick Bellasi <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Quentin Perret <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Valentin Schneider <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 5b9691e5ea59f3d186a5528c9c8775c59d450616..7f8d477f90fec636bc16d1927b01ef731ffbf847 100644 (file)
--- 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;