Revert "sched/fair: Don't let tasks slip away from gold to silver cluster"

If we ever wanted to stop big tasks from being balanced out to smaller cluster,
it had already been done by checking the tasks in can_migrate_task() with
schedtune

This commit, however, introduces a bug that light tasks including non-big tasks
not being balanced out to smaller cluster, resulting in big cluster being
occasionally overloaded

This reverts commit d89e049987.

Change-Id: I72bbd526c8b4e0aabb7533cbdb5141593016dbb5
Signed-off-by: Diep Quynh <remilia.1505@gmail.com>
Signed-off-by: Alexander Winkowski <dereference23@outlook.com>

kernel/sched/fair.c

@@ -203,7 +203,6 @@ unsigned int sysctl_sched_min_task_util_for_boost = 51;
 /* 0.68ms default for 20ms window size scaled to 1024 */
 unsigned int sysctl_sched_min_task_util_for_colocation = 35;
 #endif
-static unsigned int __maybe_unused sched_small_task_threshold = 102;
 
 static inline void update_load_add(struct load_weight *lw, unsigned long inc)
 {
@@ -10876,8 +10875,7 @@ static struct rq *find_busiest_queue(struct lb_env *env,
 		 */
 		if (env->sd->flags & SD_ASYM_CPUCAPACITY &&
 		    capacity_of(env->dst_cpu) < capacity &&
-		    (rq->nr_running == 1 || (rq->nr_running == 2 &&
+		    rq->nr_running == 1)
-		     task_util(rq->curr) < sched_small_task_threshold)))
 			continue;
 
 		wl = weighted_cpuload(rq);