--- src/sys/sys/systm.h	2007/04/30 07:18:56	1.68
+++ src/sys/sys/systm.h	2007/05/01 00:05:18	1.69
@@ -61,6 +61,7 @@ extern int securelevel;		/* system secur
 extern int kernel_mem_readonly;	/* disable writes to kernel memory */
 
 extern int cold;		/* nonzero if we are doing a cold boot */
+extern int tsleep_now_works;	/* tsleep won't just return any more */
 extern const char *panicstr;	/* panic message */
 extern int dumping;		/* system is dumping */
 extern int safepri;		/* safe ipl when cold or panicing */
@@ -215,6 +216,7 @@ int	susword (void *base, int word);
 
 void	realitexpire (void *);
 void	DELAY(int usec);
+void	DRIVERSLEEP(int usec);
 
 void	startprofclock (struct proc *);
 void	stopprofclock (struct proc *);