diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index f9306b1..156822e 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -168,6 +168,14 @@
 
 	  If unsure, say N.
 
+config DEBUG_VM
+	bool "Debug VM"
+	depends on DEBUG_KERNEL
+	help
+	  Enable this to debug the virtual-memory system.
+
+	  If unsure, say N.
+
 config FRAME_POINTER
 	bool "Compile the kernel with frame pointers"
 	depends on DEBUG_KERNEL && (X86 || CRIS || M68K || M68KNOMMU || FRV || UML)
@@ -178,3 +186,16 @@
 	  some architectures or if you use external debuggers.
 	  If you don't debug the kernel, you can say N.
 
+config RCU_TORTURE_TEST
+	tristate "torture tests for RCU"
+	depends on DEBUG_KERNEL
+	default n
+	help
+	  This option provides a kernel module that runs torture tests
+	  on the RCU infrastructure.  The kernel module may be built
+	  after the fact on the running kernel to be tested, if desired.
+
+	  Say Y here if you want RCU torture tests to start automatically
+	  at boot time (you probably don't).
+	  Say M if you want the RCU torture tests to build as a module.
+	  Say N if you are unsure.