diff --git a/init/Kconfig b/init/Kconfig
index 1d3475fc94967a58904627d80e8461a3721ddbb0..5f9d13929ae015057eacb1ecf0c97eca27c80470 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1205,11 +1205,14 @@ config CGROUP_BPF
 	  inet sockets.
 
 config CGROUP_DEBUG
-	bool "Example controller"
+	bool "Debug controller"
 	default n
+	depends on DEBUG_KERNEL
 	help
 	  This option enables a simple controller that exports
-	  debugging information about the cgroups framework.
+	  debugging information about the cgroups framework. This
+	  controller is for control cgroup debugging only. Its
+	  interfaces are not stable.
 
 	  Say N.
 
diff --git a/kernel/cgroup/debug.c b/kernel/cgroup/debug.c
index 1c209aa437337b7cd36cec458ab681e1f8fd5201..cbe77a2087c5fef4ea6a77393548c9aa8a52e9bf 100644
--- a/kernel/cgroup/debug.c
+++ b/kernel/cgroup/debug.c
@@ -1,3 +1,9 @@
+/*
+ * Debug controller
+ *
+ * WARNING: This controller is for cgroup core debugging only.
+ * Its interfaces are unstable and subject to changes at any time.
+ */
 #include <linux/ctype.h>
 #include <linux/mm.h>
 #include <linux/slab.h>