LXR linux/kernel/time/timekeeping.h

   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(unsigned int *cwsseq,
   8                                            ktime_t *offs_real,
   9                                            ktime_t *offs_boot,
  10                                            ktime_t *offs_tai);
  11
  12extern int timekeeping_valid_for_hres(void);
  13extern u64 timekeeping_max_deferment(void);
  14extern void timekeeping_warp_clock(void);
  15extern int timekeeping_suspend(void);
  16extern void timekeeping_resume(void);
  17#ifdef CONFIG_GENERIC_SCHED_CLOCK
  18extern int sched_clock_suspend(void);
  19extern void sched_clock_resume(void);
  20#else
  21static inline int sched_clock_suspend(void) { return 0; }
  22static inline void sched_clock_resume(void) { }
  23#endif
  24
  25extern void do_timer(unsigned long ticks);
  26extern void update_wall_time(void);
  27
  28extern seqlock_t jiffies_lock;
  29
  30#define CS_NAME_LEN     32
  31
  32#endif
  33