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 bool ktime_expiry_to_cycles(enum clocksource_ids id, ktime_t expires_ns, u64 *cycles); 13 14 extern int timekeeping_valid_for_hres(void); 15 extern u64 timekeeping_max_deferment(void); 16 extern void timekeeping_warp_clock(void); 17 extern int timekeeping_suspend(void); 18 extern void timekeeping_resume(void); 19 #ifdef CONFIG_GENERIC_SCHED_CLOCK 20 extern int sched_clock_suspend(void); 21 extern void sched_clock_resume(void); 22 #else 23 static inline int sched_clock_suspend(void) { return 0; } 24 static inline void sched_clock_resume(void) { } 25 #endif 26 27 extern void update_process_times(int user); 28 extern void do_timer(unsigned long ticks); 29 extern void update_wall_time(void); 30 31 extern raw_spinlock_t jiffies_lock; 32 extern seqcount_raw_spinlock_t jiffies_seq; 33 34 #define CS_NAME_LEN 32 35 36 #endif 37