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  */
   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 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