include/linux/pvclock_gtod.h

   1 #ifndef _PVCLOCK_GTOD_H
   2 #define _PVCLOCK_GTOD_H
   3
   4 #include <linux/notifier.h>
   5
   6 /*
   7  * The pvclock gtod notifier is called when the system time is updated
   8  * and is used to keep guest time synchronized with host time.
   9  *
  10  * The 'action' parameter in the notifier function is false (0), or
  11  * true (non-zero) if system time was stepped.
  12  */
  13 extern int pvclock_gtod_register_notifier(struct notifier_block *nb);
  14 extern int pvclock_gtod_unregister_notifier(struct notifier_block *nb);
  15
  16 #endif /* _PVCLOCK_GTOD_H */