From: lakkyung.jung <lakkyung.jung@samsung.com>
Date: Tue, 13 Mar 2018 09:46:17 +0000 (+0900)
Subject: [COMMON] sched: fair: Modify condition of group_is_overloaded for idle cpu.
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=15438c5d7e129d10dd4eba3f47f6b95274eebbfe;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

[COMMON] sched: fair: Modify condition of group_is_overloaded for idle cpu.

If the idle cpu(CPU_NEWLY_IDLE/CPU_IDLE) performs load balancing,
the group is considered an overload group if the group has more
tasks than it can handle.

Change-Id: I25ae84ade65321234ee6e306e7234a238d8e2183
Signed-off-by: lakkyung.jung <lakkyung.jung@samsung.com>
---

diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index 51940a4d3da9..82dad9ecddb8 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -8922,6 +8922,9 @@ group_is_overloaded(struct lb_env *env, struct sg_lb_stats *sgs)
 	if (sgs->sum_nr_running <= sgs->group_weight)
 		return false;
 
+	if (env->idle == CPU_NEWLY_IDLE || env->idle == CPU_IDLE)
+		return true;
+
 	if ((sgs->group_capacity * 100) <
 			(sgs->group_util * env->sd->imbalance_pct))
 		return true;