diff --git a/kernel/sched/fair.c b/kernel/sched/fair.c
index c4c3afa6e7b4f51f39445da63a161e876366a285..71661d6c5b5488d9cb9a698cf8b8b84cbd4cf1fb 100644
--- a/kernel/sched/fair.c
+++ b/kernel/sched/fair.c
@@ -9106,6 +9106,19 @@ static inline unsigned long taskgroup_cpu_util(struct task_group *tg,
 	return cpu_util_cfs(cpu);
 }
 
+static unsigned long scale_rt_capacity(int cpu);
+
+static inline unsigned long calc_cpu_capacity(int cpu)
+{
+	unsigned long capacity;
+
+	capacity = scale_rt_capacity(cpu);
+	if (!capacity)
+		capacity = 1;
+
+	return capacity;
+}
+
 /*
  * set_task_select_cpus: select the cpu range for task
  * @p: the task whose available cpu range will to set
@@ -9128,6 +9141,7 @@ static void set_task_select_cpus(struct task_struct *p, int *idlest_cpu,
 	struct task_group *tg;
 	long spare;
 	int cpu, mode;
+	int nr_cpus_valid = 0;
 
 	p->select_cpus = p->cpus_ptr;
 	if (!prefer_cpus_valid(p))
@@ -9149,7 +9163,7 @@ static void set_task_select_cpus(struct task_struct *p, int *idlest_cpu,
 
 	/* manual mode */
 	tg = task_group(p);
-	for_each_cpu(cpu, p->prefer_cpus) {
+	for_each_cpu_and(cpu, p->prefer_cpus, cpu_online_mask) {
 		if (idlest_cpu && (available_idle_cpu(cpu) || sched_idle_cpu(cpu))) {
 			*idlest_cpu = cpu;
 		} else if (idlest_cpu) {
@@ -9170,15 +9184,28 @@ static void set_task_select_cpus(struct task_struct *p, int *idlest_cpu,
 		}
 
 		util_avg_sum += taskgroup_cpu_util(tg, cpu);
-		tg_capacity += capacity_of(cpu);
+		nr_cpus_valid++;
+
+		if (cpu_rq(cpu)->rt.rt_nr_running)
+			tg_capacity += calc_cpu_capacity(cpu);
+		else
+			tg_capacity += capacity_of(cpu);
 	}
 	rcu_read_unlock();
 
-	if (tg_capacity > cpumask_weight(p->prefer_cpus) &&
+	/*
+	 * Follow cases should select cpus_ptr, checking by condition of
+	 * tg_capacity > nr_cpus_valid:
+	 * 1. all prefer_cpus offline;
+	 * 2. all prefer_cpus has no cfs capaicity(tg_capacity = nr_cpus_valid * 1)
+	 */
+	if (tg_capacity > nr_cpus_valid &&
 	    util_avg_sum * 100 <= tg_capacity * sysctl_sched_util_low_pct) {
 		p->select_cpus = p->prefer_cpus;
 		if (sd_flag & SD_BALANCE_WAKE)
 			schedstat_inc(p->stats.nr_wakeups_preferred_cpus);
+	} else if (idlest_cpu) {
+		*idlest_cpu = -1;
 	}
 }
 #endif