ntp: handle leap second via timer

Remove the leap second handling from second_overflow(), which doesn't have to
check for it every second anymore.  With CONFIG_NO_HZ this also makes sure the
leap second is handled close to the full second.  Additionally this makes it
possible to abort a leap second properly by resetting the STA_INS/STA_DEL
status bits.

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2 files changed, 3 insertions, 0 deletions

diff --git a/include/linux/clocksource.h b/include/linux/clocksource.h
index 35094479ca55..55e434feec99 100644
--- a/include/linux/clocksource.h
+++ b/include/linux/clocksource.h
@@ -93,6 +93,8 @@ struct clocksource {
 #endif
 };
 
+extern struct clocksource *clock;       /* current clocksource */
+
 /*
  * Clock source flags bits::
  */
diff --git a/include/linux/timex.h b/include/linux/timex.h
index da431f8c5c6e..fc6035d29d56 100644
--- a/include/linux/timex.h
+++ b/include/linux/timex.h
@@ -212,6 +212,7 @@ extern long time_esterror;	/* estimated error */
 
 extern long time_adjust;        /* The amount of adjtime left */
 
+extern void ntp_init(void);
 extern void ntp_clear(void);
 
 /**