1 files changed, 5 insertions, 0 deletions

diff --git a/kernel/exit.c b/kernel/exit.c
index 60d6fdcc9265..782b2e1f7ca2 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -1575,6 +1575,11 @@ static int ptrace_do_wait(struct wait_opts *wo, struct task_struct *tsk)
         return 0;
 }
 
+void __wake_up_parent(struct task_struct *p, struct task_struct *parent)
+{
+        wake_up_interruptible_sync(&parent->signal->wait_chldexit);
+}
+
 static long do_wait(struct wait_opts *wo)
 {
         DECLARE_WAITQUEUE(wait, current);