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 8 struct hrtimer_clock_base; 9 10 /* 11 * Return values for the callback function 12 */ 13 enum 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 */ 39 struct 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