diff --git a/Documentation/core-api/index.rst b/Documentation/core-api/index.rst
index 2466a4c51031..322ac954b390 100644
--- a/Documentation/core-api/index.rst
+++ b/Documentation/core-api/index.rst
@@ -35,6 +35,7 @@ Core utilities
    boot-time-mm
    memory-hotplug
    protection-keys
+   ../RCU/index
 
 
 Interfaces for kernel debugging