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
sched_clock_suspend(void)21 static inline int sched_clock_suspend(void) { return 0; }
sched_clock_resume(void)22 static inline void sched_clock_resume(void) { }
23 #endif
24 
25 extern void update_process_times(int user);
26 extern void do_timer(unsigned long ticks);
27 extern void update_wall_time(void);
28 
29 extern raw_spinlock_t jiffies_lock;
30 extern seqcount_raw_spinlock_t jiffies_seq;
31 
32 #define CS_NAME_LEN	32
33 
34 #endif
35