1 files changed, 11 insertions, 0 deletions

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index f5605b6deea4..da302ca98f60 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -5089,10 +5089,20 @@ static struct notifier_block migration_notifier = {
         .priority = CPU_PRI_MIGRATION,
 };
 
+static void __cpuinit set_cpu_rq_start_time(void)
+{
+        int cpu = smp_processor_id();
+        struct rq *rq = cpu_rq(cpu);
+        rq->age_stamp = sched_clock_cpu(cpu);
+}
+
 static int sched_cpu_active(struct notifier_block *nfb,
                                       unsigned long action, void *hcpu)
 {
         switch (action & ~CPU_TASKS_FROZEN) {
+        case CPU_STARTING:
+                set_cpu_rq_start_time();
+                return NOTIFY_OK;
         case CPU_DOWN_FAILED:
                 set_cpu_active((long)hcpu, true);
                 return NOTIFY_OK;
@@ -6970,6 +6980,7 @@ void __init sched_init(void)
         if (cpu_isolated_map == NULL)
                 zalloc_cpumask_var(&cpu_isolated_map, GFP_NOWAIT);
         idle_thread_set_boot_cpu();
+        set_cpu_rq_start_time();
 #endif
         init_sched_fair_class();