cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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alarmtimer.h (1990B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2#ifndef _LINUX_ALARMTIMER_H
      3#define _LINUX_ALARMTIMER_H
      4
      5#include <linux/time.h>
      6#include <linux/hrtimer.h>
      7#include <linux/timerqueue.h>
      8
      9struct rtc_device;
     10
     11enum alarmtimer_type {
     12	ALARM_REALTIME,
     13	ALARM_BOOTTIME,
     14
     15	/* Supported types end here */
     16	ALARM_NUMTYPE,
     17
     18	/* Used for tracing information. No usable types. */
     19	ALARM_REALTIME_FREEZER,
     20	ALARM_BOOTTIME_FREEZER,
     21};
     22
     23enum alarmtimer_restart {
     24	ALARMTIMER_NORESTART,
     25	ALARMTIMER_RESTART,
     26};
     27
     28
     29#define ALARMTIMER_STATE_INACTIVE	0x00
     30#define ALARMTIMER_STATE_ENQUEUED	0x01
     31
     32/**
     33 * struct alarm - Alarm timer structure
     34 * @node:	timerqueue node for adding to the event list this value
     35 *		also includes the expiration time.
     36 * @timer:	hrtimer used to schedule events while running
     37 * @function:	Function pointer to be executed when the timer fires.
     38 * @type:	Alarm type (BOOTTIME/REALTIME).
     39 * @state:	Flag that represents if the alarm is set to fire or not.
     40 * @data:	Internal data value.
     41 */
     42struct alarm {
     43	struct timerqueue_node	node;
     44	struct hrtimer		timer;
     45	enum alarmtimer_restart	(*function)(struct alarm *, ktime_t now);
     46	enum alarmtimer_type	type;
     47	int			state;
     48	void			*data;
     49};
     50
     51void alarm_init(struct alarm *alarm, enum alarmtimer_type type,
     52		enum alarmtimer_restart (*function)(struct alarm *, ktime_t));
     53void alarm_start(struct alarm *alarm, ktime_t start);
     54void alarm_start_relative(struct alarm *alarm, ktime_t start);
     55void alarm_restart(struct alarm *alarm);
     56int alarm_try_to_cancel(struct alarm *alarm);
     57int alarm_cancel(struct alarm *alarm);
     58
     59u64 alarm_forward(struct alarm *alarm, ktime_t now, ktime_t interval);
     60u64 alarm_forward_now(struct alarm *alarm, ktime_t interval);
     61ktime_t alarm_expires_remaining(const struct alarm *alarm);
     62
     63#ifdef CONFIG_RTC_CLASS
     64/* Provide way to access the rtc device being used by alarmtimers */
     65struct rtc_device *alarmtimer_get_rtcdev(void);
     66#else
     67static inline struct rtc_device *alarmtimer_get_rtcdev(void) { return NULL; }
     68#endif
     69
     70#endif