1 /* SPDX-License-Identifier: GPL-2.0 */
2 #define TIMER_RETRY 1
3
4 struct k_clock {
5 int (*clock_getres)(const clockid_t which_clock,
6 struct timespec64 *tp);
7 int (*clock_set)(const clockid_t which_clock,
8 const struct timespec64 *tp);
9 /* Returns the clock value in the current time namespace. */
10 int (*clock_get_timespec)(const clockid_t which_clock,
11 struct timespec64 *tp);
12 /* Returns the clock value in the root time namespace. */
13 ktime_t (*clock_get_ktime)(const clockid_t which_clock);
14 int (*clock_adj)(const clockid_t which_clock, struct __kernel_timex *tx);
15 int (*timer_create)(struct k_itimer *timer);
16 int (*nsleep)(const clockid_t which_clock, int flags,
17 const struct timespec64 *);
18 int (*timer_set)(struct k_itimer *timr, int flags,
19 struct itimerspec64 *new_setting,
20 struct itimerspec64 *old_setting);
21 int (*timer_del)(struct k_itimer *timr);
22 void (*timer_get)(struct k_itimer *timr,
23 struct itimerspec64 *cur_setting);
24 void (*timer_rearm)(struct k_itimer *timr);
25 s64 (*timer_forward)(struct k_itimer *timr, ktime_t now);
26 ktime_t (*timer_remaining)(struct k_itimer *timr, ktime_t now);
27 int (*timer_try_to_cancel)(struct k_itimer *timr);
28 void (*timer_arm)(struct k_itimer *timr, ktime_t expires,
29 bool absolute, bool sigev_none);
30 void (*timer_wait_running)(struct k_itimer *timr);
31 };
32
33 extern const struct k_clock clock_posix_cpu;
34 extern const struct k_clock clock_posix_dynamic;
35 extern const struct k_clock clock_process;
36 extern const struct k_clock clock_thread;
37 extern const struct k_clock alarm_clock;
38
39 int posix_timer_event(struct k_itimer *timr, int si_private);
40
41 void common_timer_get(struct k_itimer *timr, struct itimerspec64 *cur_setting);
42 int common_timer_set(struct k_itimer *timr, int flags,
43 struct itimerspec64 *new_setting,
44 struct itimerspec64 *old_setting);
45 int common_timer_del(struct k_itimer *timer);
46
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