1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _PVCLOCK_GTOD_H
3#define _PVCLOCK_GTOD_H
4
5#include <linux/notifier.h>
6
7/*
8 * The pvclock gtod notifier is called when the system time is updated
9 * and is used to keep guest time synchronized with host time.
10 *
11 * The 'action' parameter in the notifier function is false (0), or
12 * true (non-zero) if system time was stepped.
13 */
14extern int pvclock_gtod_register_notifier(struct notifier_block *nb);
15extern int pvclock_gtod_unregister_notifier(struct notifier_block *nb);
16
17#endif /* _PVCLOCK_GTOD_H */
18