Commit 48f18fd6 authored by Thomas Gleixner's avatar Thomas Gleixner Committed by John Stultz
Browse files

timekeeping: Use ktime_get_boottime() for get_monotonic_boottime() 



get_monotonic_boottime() is not used in fast pathes, so the extra
timespec conversion is not problematic.

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarJohn Stultz <john.stultz@linaro.org>
parent 250fade8

include/linux/timekeeping.h

+8 −1
Original line number Diff line number Diff line
@@ -27,7 +27,6 @@ struct timespec __current_kernel_time(void); 
 */

struct timespec get_monotonic_coarse(void);

extern void getrawmonotonic(struct timespec *ts);

extern void get_monotonic_boottime(struct timespec *ts);

extern void ktime_get_ts64(struct timespec64 *ts);



extern int __getnstimeofday64(struct timespec64 *tv);
@@ -159,6 +158,14 @@ static inline u64 ktime_get_boot_ns(void) 
	return ktime_to_ns(ktime_get_boottime());

}



/*

 * Timespec interfaces utilizing the ktime based ones

 */

static inline void get_monotonic_boottime(struct timespec *ts)

{

	*ts = ktime_to_timespec(ktime_get_boottime());

}



/*

 * RTC specific

 */

kernel/time/timekeeping.c

+0 −34
Original line number Diff line number Diff line
@@ -1536,40 +1536,6 @@ void getboottime(struct timespec *ts) 
}

EXPORT_SYMBOL_GPL(getboottime);



/**

 * get_monotonic_boottime - Returns monotonic time since boot

 * @ts:		pointer to the timespec to be set

 *

 * Returns the monotonic time since boot in a timespec.

 *

 * This is similar to CLOCK_MONTONIC/ktime_get_ts, but also

 * includes the time spent in suspend.

 */

void get_monotonic_boottime(struct timespec *ts)

{

	struct timekeeper *tk = &tk_core.timekeeper;

	struct timespec64 tomono, sleep, ret;

	s64 nsec;

	unsigned int seq;



	WARN_ON(timekeeping_suspended);



	do {

		seq = read_seqcount_begin(&tk_core.seq);

		ret.tv_sec = tk->xtime_sec;

		nsec = timekeeping_get_ns(tk);

		tomono = tk->wall_to_monotonic;

		sleep = tk->total_sleep_time;



	} while (read_seqcount_retry(&tk_core.seq, seq));



	ret.tv_sec += tomono.tv_sec + sleep.tv_sec;

	ret.tv_nsec = 0;

	timespec64_add_ns(&ret, nsec + tomono.tv_nsec + sleep.tv_nsec);

	*ts = timespec64_to_timespec(ret);

}

EXPORT_SYMBOL_GPL(get_monotonic_boottime);



unsigned long get_seconds(void)

{

	struct timekeeper *tk = &tk_core.timekeeper;