timekeeping: Introduce timekeeping_leap_insert

Move the adjustment of xtime, wall_to_monotonic and the update of the
vsyscall variables to the timekeeping code.

Signed-off-by: John Stultz <johnstul@us.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
LKML-Reference: <20090814134807.609730216@de.ibm.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 7 insertions, 0 deletions

diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c
index 02c0b2c9c674..b8b70fb545fc 100644
--- a/kernel/time/timekeeping.c
+++ b/kernel/time/timekeeping.c
@@ -58,6 +58,13 @@ void update_xtime_cache(u64 nsec)
 
 struct clocksource *clock;
 
+/* must hold xtime_lock */
+void timekeeping_leap_insert(int leapsecond)
+{
+        xtime.tv_sec += leapsecond;
+        wall_to_monotonic.tv_sec -= leapsecond;
+        update_vsyscall(&xtime, clock);
+}
 
 #ifdef CONFIG_GENERIC_TIME
 /**