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36 lines · 1.0 KiB

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 */
7extern ktime_t ktime_get_update_offsets_now(u32 *cwsseq,
8 ktime_t *offs_real,
9 ktime_t *offs_boot,
10 ktime_t *offs_tai);
11
12bool ktime_expiry_to_cycles(enum clocksource_ids id, ktime_t expires_ns, u64 *cycles);
13
14extern int timekeeping_valid_for_hres(void);
15extern u64 timekeeping_max_deferment(void);
16extern void timekeeping_warp_clock(void);
17extern int timekeeping_suspend(void);
18extern void timekeeping_resume(void);
19#ifdef CONFIG_GENERIC_SCHED_CLOCK
20extern int sched_clock_suspend(void);
21extern void sched_clock_resume(void);
22#else
23static inline int sched_clock_suspend(void) { return 0; }
24static inline void sched_clock_resume(void) { }
25#endif
26
27extern void update_process_times(int user);
28extern void do_timer(unsigned long ticks);
29extern void update_wall_time(void);
30
31extern raw_spinlock_t jiffies_lock;
32extern seqcount_raw_spinlock_t jiffies_seq;
33
34#define CS_NAME_LEN 32
35
36#endif