sched: ems: remove exynos_fit_idlest_group()

Since exynos_proper_cpu() is implemented, exynos no longer calls
find_idlest_group(). Therefore, exynos_fit_idlest_group() is no
longer needed.

Change-Id: Ia04391c3406f8cfe0215fc20ea966b4a1d8c8228
Signed-off-by: Park Bumgyu <bumgyu.park@samsung.com>

diff --git a/include/linux/ems.h b/include/linux/ems.h
index bfb35a3ab1935f9d6ab177fc43a9cb561b70d41e..cd782583e886a58280ced2162cc527cdb01805bd 100644 (file)
--- a/include/linux/ems.h
+++ b/include/linux/ems.h
@@ -32,8 +32,6 @@ struct gb_qos_request {
 };
 
 #ifdef CONFIG_SCHED_EMS
-extern struct sched_group *exynos_fit_idlest_group(struct sched_domain *sd,
-               struct task_struct *p);
 extern void exynos_init_entity_util_avg(struct sched_entity *se);
 extern int exynos_need_active_balance(enum cpu_idle_type idle,
                struct sched_domain *sd, int src_cpu, int dst_cpu);
@@ -56,8 +54,6 @@ extern void gb_qos_update_request(struct gb_qos_request *req, u32 new_value);
 
 extern void request_kernel_prefer_perf(int grp_idx, int enable);
 #else
-static inline struct sched_group *exynos_fit_idlest_group(struct sched_domain *sd,
-               struct task_struct *p) { return NULL; }
 static inline void exynos_init_entity_util_avg(struct sched_entity *se) { }
 static inline int exynos_need_active_balance(enum cpu_idle_type idle,
                struct sched_domain *sd, int src_cpu, int dst_cpu) { return 0; }

diff --git a/kernel/sched/ems/core.c b/kernel/sched/ems/core.c
index 03efea678f8344b964d139ce2966df8a7ee45709..341eb2e0c4add6e6c455953345158f747c08280b 100644 (file)
--- a/kernel/sched/ems/core.c
+++ b/kernel/sched/ems/core.c
@@ -32,37 +32,6 @@ int cpu_util_wake(int cpu, struct task_struct *p)
        return (util >= capacity) ? capacity : util;
 }
 
-static inline int task_fits(struct task_struct *p, long capacity)
-{
-       return capacity * 1024 > task_util(p) * 1248;
-}
-
-struct sched_group *
-exynos_fit_idlest_group(struct sched_domain *sd, struct task_struct *p)
-{
-       struct sched_group *group = sd->groups;
-       struct sched_group *fit_group = NULL;
-       unsigned long fit_capacity = ULONG_MAX;
-
-       do {
-               int i;
-
-               /* Skip over this group if it has no CPUs allowed */
-               if (!cpumask_intersects(sched_group_span(group),
-                                       &p->cpus_allowed))
-                       continue;
-
-               for_each_cpu(i, sched_group_span(group)) {
-                       if (capacity_of(i) < fit_capacity && task_fits(p, capacity_of(i))) {
-                               fit_capacity = capacity_of(i);
-                               fit_group = group;
-                       }
-               }
-       } while (group = group->next, group != sd->groups);
-
-       return fit_group;
-}
-
 static inline int
 check_cpu_capacity(struct rq *rq, struct sched_domain *sd)
 {

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 23429156ab787ebd58f1f3e56c7e06d4a4f01681..c00cbfb07cddb25979681e969a50db17ff29277c 100644 (file)
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -6276,12 +6276,6 @@ find_idlest_group(struct sched_domain *sd, struct task_struct *p,
        unsigned long imbalance = scale_load_down(NICE_0_LOAD) *
                                (sd->imbalance_pct-100) / 100;
 
-       if (sched_feat(EXYNOS_MS)) {
-               idlest = exynos_fit_idlest_group(sd, p);
-               if (idlest)
-                       return idlest;
-       }
-
        if (sd_flag & SD_BALANCE_WAKE)
                load_idx = sd->wake_idx;