diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index efba91b0..fea043b 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -64,6 +64,15 @@
 	return ((get_clock() - jiffies_timer_cc) * 125) >> 9;
 }
 
+/*
+ * Monotonic_clock - returns # of nanoseconds passed since time_init()
+ */
+unsigned long long monotonic_clock(void)
+{
+	return sched_clock();
+}
+EXPORT_SYMBOL(monotonic_clock);
+
 void tod_to_timeval(__u64 todval, struct timespec *xtime)
 {
 	unsigned long long sec;