diff -ruN linux-2.4.25/include/linux/sysctl.h software-suspend-linux-2.4.25-rev11/include/linux/sysctl.h
--- linux-2.4.25/include/linux/sysctl.h	2004-03-05 14:35:19.000000000 +1100
+++ software-suspend-linux-2.4.25-rev11/include/linux/sysctl.h	2004-03-29 14:15:05.000000000 +1000
@@ -128,6 +128,7 @@
 	KERN_PPC_L3CR=57,       /* l3cr register on PPC */
 	KERN_EXCEPTION_TRACE=58, /* boolean: exception trace */
  	KERN_CORE_SETUID=59,	/* int: set to allow core dumps of setuid apps */
+	KERN_SWSUSP=60,		/* struct: interface to activate software suspension */
	KERN_SHM_DESTROY_UNUSED=5001, /* boolean: destroy unused SysV shm regions */
 };
 
