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time: Consolidate the time accessor prototypes
Right now we have time related prototypes in 3 different header files. Move it to a single timekeeping header file and move the core internal stuff into a core private header. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: John Stultz <john.stultz@linaro.org>
This commit is contained in:
Thomas Gleixner
John Stultz
parent
7d489d15ce
commit
8b094cd03b
@ -326,17 +326,6 @@ static inline void timerfd_clock_was_set(void) { }
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#endif
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extern void hrtimers_resume(void);
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extern ktime_t ktime_get(void);
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extern ktime_t ktime_get_real(void);
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extern ktime_t ktime_get_boottime(void);
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extern ktime_t ktime_get_monotonic_offset(void);
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extern ktime_t ktime_get_clocktai(void);
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extern ktime_t ktime_get_update_offsets_tick(ktime_t *offs_real,
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ktime_t *offs_boot,
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ktime_t *offs_tai);
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extern ktime_t ktime_get_update_offsets_now(ktime_t *offs_real,
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ktime_t *offs_boot,
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ktime_t *offs_tai);
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DECLARE_PER_CPU(struct tick_device, tick_cpu_device);
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@ -250,12 +250,6 @@ static inline __must_check bool ktime_to_timespec64_cond(const ktime_t kt,
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#define LOW_RES_NSEC TICK_NSEC
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#define KTIME_LOW_RES (ktime_t){ .tv64 = LOW_RES_NSEC }
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/* Get the monotonic time in timespec format: */
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extern void ktime_get_ts(struct timespec *ts);
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/* Get the real (wall-) time in timespec format: */
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#define ktime_get_real_ts(ts) getnstimeofday(ts)
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static inline ktime_t ns_to_ktime(u64 ns)
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{
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static const ktime_t ktime_zero = { .tv64 = 0 };
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@ -270,4 +264,6 @@ static inline ktime_t ms_to_ktime(u64 ms)
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return ktime_add_ms(ktime_zero, ms);
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}
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# include <linux/timekeeping.h>
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#endif
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@ -99,25 +99,7 @@ static inline bool timespec_valid_strict(const struct timespec *ts)
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return true;
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}
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extern bool persistent_clock_exist;
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static inline bool has_persistent_clock(void)
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{
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return persistent_clock_exist;
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}
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extern void read_persistent_clock(struct timespec *ts);
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extern void read_boot_clock(struct timespec *ts);
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extern int persistent_clock_is_local;
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extern int update_persistent_clock(struct timespec now);
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void timekeeping_init(void);
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extern int timekeeping_suspended;
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unsigned long get_seconds(void);
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struct timespec current_kernel_time(void);
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struct timespec __current_kernel_time(void); /* does not take xtime_lock */
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struct timespec get_monotonic_coarse(void);
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void timekeeping_inject_sleeptime(struct timespec *delta);
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extern struct timespec timespec_trunc(struct timespec t, unsigned gran);
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#define CURRENT_TIME (current_kernel_time())
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#define CURRENT_TIME_SEC ((struct timespec) { get_seconds(), 0 })
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@ -135,33 +117,14 @@ void timekeeping_inject_sleeptime(struct timespec *delta);
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extern u32 (*arch_gettimeoffset)(void);
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#endif
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extern void do_gettimeofday(struct timeval *tv);
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extern int do_settimeofday(const struct timespec *tv);
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extern int do_sys_settimeofday(const struct timespec *tv,
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const struct timezone *tz);
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#define do_posix_clock_monotonic_gettime(ts) ktime_get_ts(ts)
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extern long do_utimes(int dfd, const char __user *filename, struct timespec *times, int flags);
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struct itimerval;
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extern int do_setitimer(int which, struct itimerval *value,
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struct itimerval *ovalue);
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extern unsigned int alarm_setitimer(unsigned int seconds);
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extern int do_getitimer(int which, struct itimerval *value);
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extern int __getnstimeofday(struct timespec *tv);
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extern void getnstimeofday(struct timespec *tv);
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extern void getrawmonotonic(struct timespec *ts);
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extern void getnstime_raw_and_real(struct timespec *ts_raw,
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struct timespec *ts_real);
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extern void getboottime(struct timespec *ts);
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extern void monotonic_to_bootbased(struct timespec *ts);
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extern void get_monotonic_boottime(struct timespec *ts);
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extern struct timespec timespec_trunc(struct timespec t, unsigned gran);
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extern int timekeeping_valid_for_hres(void);
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extern u64 timekeeping_max_deferment(void);
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extern int timekeeping_inject_offset(struct timespec *ts);
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extern s32 timekeeping_get_tai_offset(void);
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extern void timekeeping_set_tai_offset(s32 tai_offset);
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extern void timekeeping_clocktai(struct timespec *ts);
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extern unsigned int alarm_setitimer(unsigned int seconds);
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extern long do_utimes(int dfd, const char __user *filename, struct timespec *times, int flags);
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struct tms;
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extern void do_sys_times(struct tms *);
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78
include/linux/timekeeping.h
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78
include/linux/timekeeping.h
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@ -0,0 +1,78 @@
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#ifndef _LINUX_TIMEKEEPING_H
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#define _LINUX_TIMEKEEPING_H
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/* Included from linux/ktime.h */
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void timekeeping_init(void);
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extern int timekeeping_suspended;
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/*
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* Get and set timeofday
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*/
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extern void do_gettimeofday(struct timeval *tv);
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extern int do_settimeofday(const struct timespec *tv);
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extern int do_sys_settimeofday(const struct timespec *tv,
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const struct timezone *tz);
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/*
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* Kernel time accessors
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*/
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unsigned long get_seconds(void);
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struct timespec current_kernel_time(void);
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/* does not take xtime_lock */
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struct timespec __current_kernel_time(void);
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/*
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* timespec based interfaces
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*/
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struct timespec get_monotonic_coarse(void);
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extern void getrawmonotonic(struct timespec *ts);
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extern void monotonic_to_bootbased(struct timespec *ts);
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extern void get_monotonic_boottime(struct timespec *ts);
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extern void ktime_get_ts(struct timespec *ts);
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extern int __getnstimeofday(struct timespec *tv);
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extern void getnstimeofday(struct timespec *tv);
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extern void getboottime(struct timespec *ts);
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#define do_posix_clock_monotonic_gettime(ts) ktime_get_ts(ts)
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#define ktime_get_real_ts(ts) getnstimeofday(ts)
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/*
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* ktime_t based interfaces
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*/
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extern ktime_t ktime_get(void);
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extern ktime_t ktime_get_real(void);
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extern ktime_t ktime_get_boottime(void);
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extern ktime_t ktime_get_monotonic_offset(void);
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extern ktime_t ktime_get_clocktai(void);
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/*
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* RTC specific
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*/
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extern void timekeeping_inject_sleeptime(struct timespec *delta);
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/*
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* PPS accessor
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*/
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extern void getnstime_raw_and_real(struct timespec *ts_raw,
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struct timespec *ts_real);
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/*
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* Persistent clock related interfaces
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*/
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extern bool persistent_clock_exist;
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extern int persistent_clock_is_local;
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static inline bool has_persistent_clock(void)
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{
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return persistent_clock_exist;
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}
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extern void read_persistent_clock(struct timespec *ts);
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extern void read_boot_clock(struct timespec *ts);
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extern int update_persistent_clock(struct timespec now);
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#endif
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@ -54,6 +54,8 @@
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#include <trace/events/timer.h>
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#include "timekeeping.h"
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/*
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* The timer bases:
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*
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@ -49,6 +49,8 @@
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#include <linux/export.h>
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#include <linux/hashtable.h>
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#include "timekeeping.h"
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/*
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* Management arrays for POSIX timers. Timers are now kept in static hash table
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* with 512 entries.
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@ -4,6 +4,8 @@
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#include <linux/hrtimer.h>
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#include <linux/tick.h>
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#include "timekeeping.h"
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extern seqlock_t jiffies_lock;
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#define CS_NAME_LEN 32
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@ -42,6 +42,7 @@
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#include <asm/unistd.h>
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#include "timeconst.h"
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#include "timekeeping.h"
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/*
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* The timezone where the local system is located. Used as a default by some
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20
kernel/time/timekeeping.h
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20
kernel/time/timekeeping.h
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@ -0,0 +1,20 @@
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#ifndef _KERNEL_TIME_TIMEKEEPING_H
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#define _KERNEL_TIME_TIMEKEEPING_H
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/*
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* Internal interfaces for kernel/time/
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*/
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extern ktime_t ktime_get_update_offsets_tick(ktime_t *offs_real,
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ktime_t *offs_boot,
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ktime_t *offs_tai);
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extern ktime_t ktime_get_update_offsets_now(ktime_t *offs_real,
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ktime_t *offs_boot,
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ktime_t *offs_tai);
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extern int timekeeping_valid_for_hres(void);
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extern u64 timekeeping_max_deferment(void);
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extern int timekeeping_inject_offset(struct timespec *ts);
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extern s32 timekeeping_get_tai_offset(void);
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extern void timekeeping_set_tai_offset(s32 tai_offset);
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extern void timekeeping_clocktai(struct timespec *ts);
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#endif
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