--- arch/ppc/kernel/time.c.orig	Sun Jul  6 02:35:18 2003
+++ arch/ppc/kernel/time.c	Sun Jul  6 02:20:27 2003
@@ -277,6 +277,18 @@
 	xtime.tv_nsec = new_nsec;
 	xtime.tv_sec = new_sec;
 
+	wall_to_monotonic.tv_sec += xtime.tv_sec - tv->tv_sec;
+	wall_to_monotonic.tv_nsec += xtime.tv_nsec - tv->tv_nsec;
+
+	if (wall_to_monotonic.tv_nsec > NSEC_PER_SEC) {
+		wall_to_monotonic.tv_nsec -= NSEC_PER_SEC;
+		wall_to_monotonic.tv_sec++;
+	}
+	if (wall_to_monotonic.tv_nsec < 0) {
+		wall_to_monotonic.tv_nsec += NSEC_PER_SEC;
+		wall_to_monotonic.tv_sec--;
+	}
+
 	/* In case of a large backwards jump in time with NTP, we want the 
 	 * clock to be updated as soon as the PLL is again in lock.
 	 */
@@ -347,6 +359,8 @@
 		sys_tz.tz_dsttime = 0;
 		xtime.tv_sec -= time_offset;
         }
+	wall_to_monotonic.tv_sec = -xtime.tv_sec;
+	wall_to_monotonic.tv_nsec = -xtime.tv_nsec;
 }
 
 #define FEBRUARY		2
@@ -427,4 +441,14 @@
 	if (err <= inscale/2) mlt++;
 	return mlt;
 }
+
+/* monotonic_clock(): returns # of nanoseconds passed since time_init()
+ *		Note: This function is required to return accurate
+ *		time even in the absence of multiple timer ticks.
+ */
+unsigned long long monotonic_clock(void)
+{
+	return xtime.tv_sec * NSEC_PER_SEC + xtime.tv_nsec;
+}
+EXPORT_SYMBOL(monotonic_clock);