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  *   €l–Ь4э( ©і( 	ЕЂfаB¦-яїѓx.»_†I|ҐЏ+ДГ с    /* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_TIMEKEEPING_H
#define _LINUX_TIMEKEEPING_H

#include <linux/errno.h>
#include <linux/clocksource_ids.h>
#include <linux/ktime.h>

/* Included from linux/ktime.h */

void timekeeping_init(void);
extern int timekeeping_suspended;

/* Architecture timer tick functions: */
extern void legacy_timer_tick(unsigned long ticks);

/*
 * Get and set timeofday
 */
extern int do_settimeofday64(const struct timespec64 *ts);
extern int do_sys_settimeofday64(const struct timespec64 *tv,
				 const struct timezone *tz);

/*
 * ktime_get() family: read the current time in a multitude of ways,
 *
 * The default time reference is CLOCK_MONOTONIC, starting at
 * boot time but not counting the time spent in suspend.
 * For other references, use the functions with "real", "clocktai",
 * "boottime" and "raw" suffixes.
 *
 * To get the time in a different format, use the ones wit
 * "ns", "ts64" and "seconds" suffix.
 *
 * See Documentation/core-api/timekeeping.rst for more details.
 */


/*
 * timespec64 based interfaces
 */
extern void ktime_get_raw_ts64(struct timespec64 *ts);
extern void ktime_get_ts64(struct timespec64 *ts);
extern void ktime_get_real_ts64(struct timespec64 *tv);
extern void ktime_get_coarse_ts64(struct timespec64 *ts);
extern void ktime_get_coarse_real_ts64(struct timespec64 *ts);

void getboottime64(struct timespec64 *ts);

/*
 * time64_t base interfaces
 */
extern time64_t ktime_get_seconds(void);
extern time64_t __ktime_get_real_seconds(void);
extern time64_t ktime_get_real_seconds(void);

/*
 * ktime_t based interfaces
 */

enum tk_offsets {
	TK_OFFS_REAL,
	TK_OFFS_BOOT,
	TK_OFFS_TAI,
	TK_OFFS_MAX,
};

extern ktime_t ktime_get(void);
extern ktime_t ktime_get_with_offset(enum tk_offsets offs);
extern ktime_t ktime_get_coarse_with_offset(enum tk_offsets offs);
extern ktime_t ktime_mono_to_any(ktime_t tmono, enum tk_offsets offs);
extern ktime_t ktime_get_raw(void);
extern u32 ktime_get_resolution_ns(void);

/**
 * ktime_get_real - get the real (wall-) time in ktime_t format
 */
static inline ktime_t ktime_get_real(void)
{
	return ktime_get_with_offset(TK_OFFS_REAL);
}

static inline ktime_t ktime_get_coarse_real(void)
{
	return ktime_get_coarse_with_offset(TK_OFFS_REAL);
}

/**
 * ktime_get_boottime - Returns monotonic time since boot in ktime_t format
 *
 * This is similar to CLOCK_MONTONIC/ktime_get, but also includes the
 * time spent in suspend.
 */
static inline ktime_t ktime_get_boottime(void)
{
	return ktime_get_with_offset(TK_OFFS_BOOT);
}

static inline ktime_t ktime_get_coarse_boottime(void)
{
	return ktime_get_coarse_with_offset(TK_OFFS_BOOT);
}

/**
 * ktime_get_clocktai - Returns the TAI time of day in ktime_t format
 */
static inline ktime_t ktime_get_clocktai(void)
{
	return ktime_get_with_offset(TK_OFFS_TAI);
}

static inline ktime_t ktime_get_coarse_clocktai(void)
{
	return ktime_get_coarse_with_offset(TK_OFFS_TAI);
}

static inline ktime_t ktime_get_coarse(void)
{
	struct timespec64 ts;

	ktime_get_coarse_ts64(&ts);
	return timespec64_to_ktime(ts);
}

static inline u64 ktime_get_coarse_ns(void)
{
	return ktime_to_ns(ktime_get_coarse());
}

static inline u64 ktime_get_coarse_real_ns(void)
{
	return ktime_to_ns(ktime_get_coarse_real());
}

static inline u64 ktime_get_coarse_boottime_ns(void)
{
	return ktime_to_ns(ktime_get_coarse_boottime());
}

static inline u64 ktime_get_coarse_clocktai_ns(void)
{
	return ktime_to_ns(ktime_get_coarse_clocktai());
}

/**
 * ktime_mono_to_real - Convert monotonic time to clock realtime
 */
static inline ktime_t ktime_mono_to_real(ktime_t mono)
{
	return ktime_mono_to_any(mono, TK_OFFS_REAL);
}

static inline u64 ktime_get_ns(void)
{
	return ktime_to_ns(ktime_get());
}

static inline u64 ktime_get_real_ns(void)
{
	return ktime_to_ns(ktime_get_real());
}

static inline u64 ktime_get_boottime_ns(void)
{
	return ktime_to_ns(ktime_get_boottime());
}

static inline u64 ktime_get_clocktai_ns(void)
{
	return ktime_to_ns(ktime_ge