1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _LINUX_HRTIMER_TYPES_H
3#define _LINUX_HRTIMER_TYPES_H
4
5#include <linux/types.h>
6#include <linux/timerqueue_types.h>
7
8struct hrtimer_clock_base;
9
10/*
11 * Return values for the callback function
12 */
13enum hrtimer_restart {
14 HRTIMER_NORESTART, /* Timer is not restarted */
15 HRTIMER_RESTART, /* Timer must be restarted */
16};
17
18/**
19 * struct hrtimer - the basic hrtimer structure
20 * @node: timerqueue node, which also manages node.expires,
21 * the absolute expiry time in the hrtimers internal
22 * representation. The time is related to the clock on
23 * which the timer is based. Is setup by adding
24 * slack to the _softexpires value. For non range timers
25 * identical to _softexpires.
26 * @_softexpires: the absolute earliest expiry time of the hrtimer.
27 * The time which was given as expiry time when the timer
28 * was armed.
29 * @function: timer expiry callback function
30 * @base: pointer to the timer base (per cpu and per clock)
31 * @state: state information (See bit values above)
32 * @is_rel: Set if the timer was armed relative
33 * @is_soft: Set if hrtimer will be expired in soft interrupt context.
34 * @is_hard: Set if hrtimer will be expired in hard interrupt context
35 * even on RT.
36 *
37 * The hrtimer structure must be initialized by hrtimer_init()
38 */
39struct hrtimer {
40 struct timerqueue_node node;
41 ktime_t _softexpires;
42 enum hrtimer_restart (*function)(struct hrtimer *);
43 struct hrtimer_clock_base *base;
44 u8 state;
45 u8 is_rel;
46 u8 is_soft;
47 u8 is_hard;
48};
49
50#endif /* _LINUX_HRTIMER_TYPES_H */
51

source code of linux/include/linux/hrtimer_types.h