diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c
index dbf43f5c86fa..ecd7e046de76 100644
--- a/kernel/rcu/tree.c
+++ b/kernel/rcu/tree.c
@@ -975,12 +975,6 @@ static void print_other_cpu_stall(struct rcu_state *rsp)
 	force_quiescent_state(rsp);  /* Kick them all. */
 }
 
-/*
- * This function really isn't for public consumption, but RCU is special in
- * that context switches can allow the state machine to make progress.
- */
-extern void resched_cpu(int cpu);
-
 static void print_cpu_stall(struct rcu_state *rsp)
 {
 	int cpu;