diff -upN reference/arch/ia64/Kconfig current/arch/ia64/Kconfig
--- reference/arch/ia64/Kconfig	Wed Jun 16 08:19:15 2004
+++ current/arch/ia64/Kconfig	Wed Jun 16 10:59:29 2004
@@ -498,6 +498,15 @@ config SYSVIPC_COMPAT
 	bool
 	depends on COMPAT && SYSVIPC
 	default y
+
+config LOCKMETER
+	bool "Kernel lock metering"
+	depends on SMP
+	help
+	  Say Y to enable kernel lock metering, which adds overhead to SMP
+	  locks, but allows you to see various statistics using the
+	  lockstat command.
+
 endmenu
 
 source "security/Kconfig"