18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 28c2ecf20Sopenharmony_ci#ifndef _PVCLOCK_GTOD_H 38c2ecf20Sopenharmony_ci#define _PVCLOCK_GTOD_H 48c2ecf20Sopenharmony_ci 58c2ecf20Sopenharmony_ci#include <linux/notifier.h> 68c2ecf20Sopenharmony_ci 78c2ecf20Sopenharmony_ci/* 88c2ecf20Sopenharmony_ci * The pvclock gtod notifier is called when the system time is updated 98c2ecf20Sopenharmony_ci * and is used to keep guest time synchronized with host time. 108c2ecf20Sopenharmony_ci * 118c2ecf20Sopenharmony_ci * The 'action' parameter in the notifier function is false (0), or 128c2ecf20Sopenharmony_ci * true (non-zero) if system time was stepped. 138c2ecf20Sopenharmony_ci */ 148c2ecf20Sopenharmony_ciextern int pvclock_gtod_register_notifier(struct notifier_block *nb); 158c2ecf20Sopenharmony_ciextern int pvclock_gtod_unregister_notifier(struct notifier_block *nb); 168c2ecf20Sopenharmony_ci 178c2ecf20Sopenharmony_ci#endif /* _PVCLOCK_GTOD_H */ 18