diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index b7281e4..a4e5d93 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -1282,6 +1282,13 @@
 source mm/Kconfig.debug
 source kernel/trace/Kconfig
 
+config RBTREE_TEST
+	tristate "Red-Black tree test"
+	depends on m && DEBUG_KERNEL
+	help
+	  A benchmark measuring the performance of the rbtree library.
+	  Also includes rbtree invariant checks.
+
 config PROVIDE_OHCI1394_DMA_INIT
 	bool "Remote debugging over FireWire early on boot"
 	depends on PCI && X86