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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
e0b306fe MT |
2 | #ifndef _PVCLOCK_GTOD_H |
3 | #define _PVCLOCK_GTOD_H | |
4 | ||
5 | #include <linux/notifier.h> | |
6 | ||
780427f0 DV |
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 | */ | |
e0b306fe MT |
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 */ |