diff --git a/include/linux/sched.h b/include/linux/sched.h
index b483f39a7112..c6bfb34d978e 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -258,8 +258,6 @@ static inline int select_nohz_load_balancer(int cpu)
 }
 #endif
 
-extern unsigned long rt_needs_cpu(int cpu);
-
 /*
  * Only dump TASK_* tasks. (0 for all tasks)
  */