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 | */ |
14 | extern int pvclock_gtod_register_notifier(struct notifier_block *nb); |
15 | extern int pvclock_gtod_unregister_notifier(struct notifier_block *nb); |
16 | |
17 | #endif /* _PVCLOCK_GTOD_H */ |
18 | |