1 files changed, 16 insertions, 1 deletions

diff --git a/arch/um/os-Linux/time.c b/arch/um/os-Linux/time.c
index 6ff3d98281ba..9ffc61ac8ed6 100644
--- a/arch/um/os-Linux/time.c
+++ b/arch/um/os-Linux/time.c
@@ -26,6 +26,21 @@ int set_interval(void)
         return 0;
 }
 
+int timer_one_shot(int ticks)
+{
+        unsigned long usec = ticks * 1000000 / UM_HZ;
+        unsigned long sec = usec / 1000000;
+        struct itimerval interval;
+
+        usec %= 1000000;
+        interval = ((struct itimerval) { { 0, 0 }, { sec, usec } });
+
+        if (setitimer(ITIMER_VIRTUAL, &interval, NULL) == -1)
+                return -errno;
+
+        return 0;
+}
+
 void disable_timer(void)
 {
         struct itimerval disable = ((struct itimerval) { { 0, 0 }, { 0, 0 }});
@@ -74,7 +89,7 @@ unsigned long long os_nsecs(void)
         struct timeval tv;
 
         gettimeofday(&tv, NULL);
-        return (unsigned long long) tv.tv_sec * BILLION + tv.tv_usec * 1000;
+        return timeval_to_ns(&tv);
 }
 
 void idle_sleep(int secs)