Index: linux-2.6.38-rc6/lib/Kconfig
===================================================================
--- linux-2.6.38-rc6.orig/lib/Kconfig	2011-03-01 19:24:16.246703947 +0100
+++ linux-2.6.38-rc6/lib/Kconfig	2011-03-01 19:26:58.696312483 +0100
@@ -223,6 +223,13 @@ config LRU_CACHE
 	tristate
 
 config AVERAGE
-	bool
+	bool "Averaging functions"
+	help
+	  This option is provided for the case where no in-kernel-tree
+	  modules require averaging functions, but a module built outside
+	  the kernel tree does. Such modules that use library averaging
+	  functions require Y here.
+
+	  If unsure, say N.
 
 endmenu