1 #ifndef _PVCLOCK_GTOD_H
2 #define _PVCLOCK_GTOD_H
4 #include <linux/notifier.h>
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.
10 * The 'action' parameter in the notifier function is false (0), or
11 * true (non-zero) if system time was stepped.
13 extern int pvclock_gtod_register_notifier(struct notifier_block *nb);
14 extern int pvclock_gtod_unregister_notifier(struct notifier_block *nb);
16 #endif /* _PVCLOCK_GTOD_H */