1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _KERNEL_TIME_TIMEKEEPING_H 3 #define _KERNEL_TIME_TIMEKEEPING_H 4 /* 5 * Internal interfaces for kernel/time/ 6 */ 7 extern ktime_t ktime_get_update_offsets_now(unsigned int *cwsseq, 8 ktime_t *offs_real, 9 ktime_t *offs_boot, 10 ktime_t *offs_tai); 11 12 extern int timekeeping_valid_for_hres(void); 13 extern u64 timekeeping_max_deferment(void); 14 extern void timekeeping_warp_clock(void); 15 extern int timekeeping_suspend(void); 16 extern void timekeeping_resume(void); 17 #ifdef CONFIG_GENERIC_SCHED_CLOCK 18 extern int sched_clock_suspend(void); 19 extern void sched_clock_resume(void); 20 #else 21 static inline int sched_clock_suspend(void) { return 0; } 22 static inline void sched_clock_resume(void) { } 23 #endif 24 25 extern void do_timer(unsigned long ticks); 26 extern void update_wall_time(void); 27 28 extern seqlock_t jiffies_lock; 29 30 #define CS_NAME_LEN 32 31 32 #endif 33