361 lines
8.0 KiB
C
361 lines
8.0 KiB
C
#ifndef _LINUX_TIMEKEEPING_H
|
|
#define _LINUX_TIMEKEEPING_H
|
|
|
|
#include <linux/errno.h>
|
|
|
|
/* Included from linux/ktime.h */
|
|
|
|
void timekeeping_init(void);
|
|
extern int timekeeping_suspended;
|
|
|
|
/* Architecture timer tick functions: */
|
|
extern void update_process_times(int user);
|
|
extern void xtime_update(unsigned long ticks);
|
|
|
|
/*
|
|
* Get and set timeofday
|
|
*/
|
|
extern void do_gettimeofday(struct timeval *tv);
|
|
extern int do_settimeofday64(const struct timespec64 *ts);
|
|
extern int do_sys_settimeofday64(const struct timespec64 *tv,
|
|
const struct timezone *tz);
|
|
static inline int do_sys_settimeofday(const struct timespec *tv,
|
|
const struct timezone *tz)
|
|
{
|
|
struct timespec64 ts64;
|
|
|
|
if (!tv)
|
|
return do_sys_settimeofday64(NULL, tz);
|
|
|
|
if (!timespec_valid(tv))
|
|
return -EINVAL;
|
|
|
|
ts64 = timespec_to_timespec64(*tv);
|
|
return do_sys_settimeofday64(&ts64, tz);
|
|
}
|
|
|
|
/*
|
|
* Kernel time accessors
|
|
*/
|
|
unsigned long get_seconds(void);
|
|
struct timespec64 current_kernel_time64(void);
|
|
/* does not take xtime_lock */
|
|
struct timespec __current_kernel_time(void);
|
|
|
|
static inline struct timespec current_kernel_time(void)
|
|
{
|
|
struct timespec64 now = current_kernel_time64();
|
|
|
|
return timespec64_to_timespec(now);
|
|
}
|
|
|
|
/*
|
|
* timespec based interfaces
|
|
*/
|
|
struct timespec64 get_monotonic_coarse64(void);
|
|
extern void getrawmonotonic64(struct timespec64 *ts);
|
|
extern void ktime_get_ts64(struct timespec64 *ts);
|
|
extern time64_t ktime_get_seconds(void);
|
|
extern time64_t ktime_get_real_seconds(void);
|
|
|
|
extern int __getnstimeofday64(struct timespec64 *tv);
|
|
extern void getnstimeofday64(struct timespec64 *tv);
|
|
extern void getboottime64(struct timespec64 *ts);
|
|
|
|
#if BITS_PER_LONG == 64
|
|
/**
|
|
* Deprecated. Use do_settimeofday64().
|
|
*/
|
|
static inline int do_settimeofday(const struct timespec *ts)
|
|
{
|
|
return do_settimeofday64(ts);
|
|
}
|
|
|
|
static inline int __getnstimeofday(struct timespec *ts)
|
|
{
|
|
return __getnstimeofday64(ts);
|
|
}
|
|
|
|
static inline void getnstimeofday(struct timespec *ts)
|
|
{
|
|
getnstimeofday64(ts);
|
|
}
|
|
|
|
static inline void ktime_get_ts(struct timespec *ts)
|
|
{
|
|
ktime_get_ts64(ts);
|
|
}
|
|
|
|
static inline void ktime_get_real_ts(struct timespec *ts)
|
|
{
|
|
getnstimeofday64(ts);
|
|
}
|
|
|
|
static inline void getrawmonotonic(struct timespec *ts)
|
|
{
|
|
getrawmonotonic64(ts);
|
|
}
|
|
|
|
static inline struct timespec get_monotonic_coarse(void)
|
|
{
|
|
return get_monotonic_coarse64();
|
|
}
|
|
|
|
static inline void getboottime(struct timespec *ts)
|
|
{
|
|
return getboottime64(ts);
|
|
}
|
|
#else
|
|
/**
|
|
* Deprecated. Use do_settimeofday64().
|
|
*/
|
|
static inline int do_settimeofday(const struct timespec *ts)
|
|
{
|
|
struct timespec64 ts64;
|
|
|
|
ts64 = timespec_to_timespec64(*ts);
|
|
return do_settimeofday64(&ts64);
|
|
}
|
|
|
|
static inline int __getnstimeofday(struct timespec *ts)
|
|
{
|
|
struct timespec64 ts64;
|
|
int ret = __getnstimeofday64(&ts64);
|
|
|
|
*ts = timespec64_to_timespec(ts64);
|
|
return ret;
|
|
}
|
|
|
|
static inline void getnstimeofday(struct timespec *ts)
|
|
{
|
|
struct timespec64 ts64;
|
|
|
|
getnstimeofday64(&ts64);
|
|
*ts = timespec64_to_timespec(ts64);
|
|
}
|
|
|
|
static inline void ktime_get_ts(struct timespec *ts)
|
|
{
|
|
struct timespec64 ts64;
|
|
|
|
ktime_get_ts64(&ts64);
|
|
*ts = timespec64_to_timespec(ts64);
|
|
}
|
|
|
|
static inline void ktime_get_real_ts(struct timespec *ts)
|
|
{
|
|
struct timespec64 ts64;
|
|
|
|
getnstimeofday64(&ts64);
|
|
*ts = timespec64_to_timespec(ts64);
|
|
}
|
|
|
|
static inline void getrawmonotonic(struct timespec *ts)
|
|
{
|
|
struct timespec64 ts64;
|
|
|
|
getrawmonotonic64(&ts64);
|
|
*ts = timespec64_to_timespec(ts64);
|
|
}
|
|
|
|
static inline struct timespec get_monotonic_coarse(void)
|
|
{
|
|
return timespec64_to_timespec(get_monotonic_coarse64());
|
|
}
|
|
|
|
static inline void getboottime(struct timespec *ts)
|
|
{
|
|
struct timespec64 ts64;
|
|
|
|
getboottime64(&ts64);
|
|
*ts = timespec64_to_timespec(ts64);
|
|
}
|
|
#endif
|
|
|
|
#define ktime_get_real_ts64(ts) getnstimeofday64(ts)
|
|
|
|
/*
|
|
* 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_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);
|
|
}
|
|
|
|
/**
|
|
* 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);
|
|
}
|
|
|
|
/**
|
|
* 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);
|
|
}
|
|
|
|
/**
|
|
* 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_boot_ns(void)
|
|
{
|
|
return ktime_to_ns(ktime_get_boottime());
|
|
}
|
|
|
|
static inline u64 ktime_get_tai_ns(void)
|
|
{
|
|
return ktime_to_ns(ktime_get_clocktai());
|
|
}
|
|
|
|
static inline u64 ktime_get_raw_ns(void)
|
|
{
|
|
return ktime_to_ns(ktime_get_raw());
|
|
}
|
|
|
|
extern u64 ktime_get_mono_fast_ns(void);
|
|
extern u64 ktime_get_raw_fast_ns(void);
|
|
extern u64 ktime_get_boot_fast_ns(void);
|
|
|
|
/*
|
|
* Timespec interfaces utilizing the ktime based ones
|
|
*/
|
|
static inline void get_monotonic_boottime(struct timespec *ts)
|
|
{
|
|
*ts = ktime_to_timespec(ktime_get_boottime());
|
|
}
|
|
|
|
static inline void get_monotonic_boottime64(struct timespec64 *ts)
|
|
{
|
|
*ts = ktime_to_timespec64(ktime_get_boottime());
|
|
}
|
|
|
|
static inline void timekeeping_clocktai(struct timespec *ts)
|
|
{
|
|
*ts = ktime_to_timespec(ktime_get_clocktai());
|
|
}
|
|
|
|
/*
|
|
* RTC specific
|
|
*/
|
|
extern bool timekeeping_rtc_skipsuspend(void);
|
|
extern bool timekeeping_rtc_skipresume(void);
|
|
|
|
extern void timekeeping_inject_sleeptime64(struct timespec64 *delta);
|
|
|
|
/*
|
|
* PPS accessor
|
|
*/
|
|
extern void ktime_get_raw_and_real_ts64(struct timespec64 *ts_raw,
|
|
struct timespec64 *ts_real);
|
|
|
|
/*
|
|
* struct system_time_snapshot - simultaneous raw/real time capture with
|
|
* counter value
|
|
* @cycles: Clocksource counter value to produce the system times
|
|
* @real: Realtime system time
|
|
* @raw: Monotonic raw system time
|
|
* @clock_was_set_seq: The sequence number of clock was set events
|
|
* @cs_was_changed_seq: The sequence number of clocksource change events
|
|
*/
|
|
struct system_time_snapshot {
|
|
u64 cycles;
|
|
ktime_t real;
|
|
ktime_t raw;
|
|
unsigned int clock_was_set_seq;
|
|
u8 cs_was_changed_seq;
|
|
};
|
|
|
|
/*
|
|
* struct system_device_crosststamp - system/device cross-timestamp
|
|
* (syncronized capture)
|
|
* @device: Device time
|
|
* @sys_realtime: Realtime simultaneous with device time
|
|
* @sys_monoraw: Monotonic raw simultaneous with device time
|
|
*/
|
|
struct system_device_crosststamp {
|
|
ktime_t device;
|
|
ktime_t sys_realtime;
|
|
ktime_t sys_monoraw;
|
|
};
|
|
|
|
/*
|
|
* struct system_counterval_t - system counter value with the pointer to the
|
|
* corresponding clocksource
|
|
* @cycles: System counter value
|
|
* @cs: Clocksource corresponding to system counter value. Used by
|
|
* timekeeping code to verify comparibility of two cycle values
|
|
*/
|
|
struct system_counterval_t {
|
|
u64 cycles;
|
|
struct clocksource *cs;
|
|
};
|
|
|
|
/*
|
|
* Get cross timestamp between system clock and device clock
|
|
*/
|
|
extern int get_device_system_crosststamp(
|
|
int (*get_time_fn)(ktime_t *device_time,
|
|
struct system_counterval_t *system_counterval,
|
|
void *ctx),
|
|
void *ctx,
|
|
struct system_time_snapshot *history,
|
|
struct system_device_crosststamp *xtstamp);
|
|
|
|
/*
|
|
* Simultaneously snapshot realtime and monotonic raw clocks
|
|
*/
|
|
extern void ktime_get_snapshot(struct system_time_snapshot *systime_snapshot);
|
|
|
|
/*
|
|
* Persistent clock related interfaces
|
|
*/
|
|
extern int persistent_clock_is_local;
|
|
|
|
extern void read_persistent_clock(struct timespec *ts);
|
|
extern void read_persistent_clock64(struct timespec64 *ts);
|
|
extern void read_boot_clock64(struct timespec64 *ts);
|
|
extern int update_persistent_clock(struct timespec now);
|
|
extern int update_persistent_clock64(struct timespec64 now);
|
|
|
|
|
|
#endif
|