1 files changed, 2 insertions, 0 deletions

diff --git a/kernel/smpboot.c b/kernel/smpboot.c
index b9bde5727829..25d3d8b6e4e1 100644
--- a/kernel/smpboot.c
+++ b/kernel/smpboot.c
@@ -209,6 +209,8 @@ static void smpboot_unpark_thread(struct smp_hotplug_thread *ht, unsigned int cp
 {
         struct task_struct *tsk = *per_cpu_ptr(ht->store, cpu);
 
+        if (ht->pre_unpark)
+                ht->pre_unpark(cpu);
         kthread_unpark(tsk);
 }