diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h
index 6038448..5ab7183 100644
--- a/include/linux/cpuidle.h
+++ b/include/linux/cpuidle.h
@@ -183,6 +183,10 @@
 
 #endif
 
+#ifdef CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED
+void cpuidle_coupled_parallel_barrier(struct cpuidle_device *dev, atomic_t *a);
+#endif
+
 /******************************
  * CPUIDLE GOVERNOR INTERFACE *
  ******************************/