From 48f18fd6addc199f330d838d54fe7b0a0892adaa Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 16 Jul 2014 21:04:57 +0000 Subject: [PATCH] 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: Thomas Gleixner Signed-off-by: John Stultz --- include/linux/timekeeping.h | 9 ++++++++- kernel/time/timekeeping.c | 34 ---------------------------------- 2 files changed, 8 insertions(+), 35 deletions(-) diff --git a/include/linux/timekeeping.h b/include/linux/timekeeping.h index 8ea3ca1b0ee5..7b8f20007871 100644 --- a/include/linux/timekeeping.h +++ b/include/linux/timekeeping.h @@ -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 */ diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index b35613508725..f63476fb0daf 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -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;