-// extern volatile struct timeval mono_time;
-extern struct timeval boottime;
-extern struct timeval runtime;
-extern volatile struct timeval time;
+extern int stathz; /* statistics clock's frequency */
+extern int profhz; /* profiling clock's frequency */
+#endif /* BSD_KERNEL_PRIVATE */
+
+
+#ifdef KERNEL_PRIVATE
+extern int lbolt; /* once a second sleep address */
+