diff options
Diffstat (limited to 'kernel/time/timekeeping.c')
| -rw-r--r-- | kernel/time/timekeeping.c | 36 |
1 files changed, 14 insertions, 22 deletions
diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index e5e466b2759..cd5dbc4579c 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -47,7 +47,7 @@ struct timespec wall_to_monotonic __attribute__ ((aligned (16))); static unsigned long total_sleep_time; /* seconds */ static struct timespec xtime_cache __attribute__ ((aligned (16))); -static inline void update_xtime_cache(u64 nsec) +void update_xtime_cache(u64 nsec) { xtime_cache = xtime; timespec_add_ns(&xtime_cache, nsec); @@ -82,13 +82,12 @@ static inline s64 __get_nsec_offset(void) } /** - * __get_realtime_clock_ts - Returns the time of day in a timespec + * getnstimeofday - Returns the time of day in a timespec * @ts: pointer to the timespec to be set * - * Returns the time of day in a timespec. Used by - * do_gettimeofday() and get_realtime_clock_ts(). + * Returns the time of day in a timespec. */ -static inline void __get_realtime_clock_ts(struct timespec *ts) +void getnstimeofday(struct timespec *ts) { unsigned long seq; s64 nsecs; @@ -104,30 +103,19 @@ static inline void __get_realtime_clock_ts(struct timespec *ts) timespec_add_ns(ts, nsecs); } -/** - * getnstimeofday - Returns the time of day in a timespec - * @ts: pointer to the timespec to be set - * - * Returns the time of day in a timespec. - */ -void getnstimeofday(struct timespec *ts) -{ - __get_realtime_clock_ts(ts); -} - EXPORT_SYMBOL(getnstimeofday); /** * do_gettimeofday - Returns the time of day in a timeval * @tv: pointer to the timeval to be set * - * NOTE: Users should be converted to using get_realtime_clock_ts() + * NOTE: Users should be converted to using getnstimeofday() */ void do_gettimeofday(struct timeval *tv) { struct timespec now; - __get_realtime_clock_ts(&now); + getnstimeofday(&now); tv->tv_sec = now.tv_sec; tv->tv_usec = now.tv_nsec/1000; } @@ -157,6 +145,7 @@ int do_settimeofday(struct timespec *tv) set_normalized_timespec(&xtime, sec, nsec); set_normalized_timespec(&wall_to_monotonic, wtm_sec, wtm_nsec); + update_xtime_cache(0); clock->error = 0; ntp_clear(); @@ -198,7 +187,8 @@ static void change_clocksource(void) clock->error = 0; clock->xtime_nsec = 0; - clocksource_calculate_interval(clock, NTP_INTERVAL_LENGTH); + clocksource_calculate_interval(clock, + (unsigned long)(current_tick_length()>>TICK_LENGTH_SHIFT)); tick_clock_notify(); @@ -255,15 +245,16 @@ void __init timekeeping_init(void) ntp_clear(); clock = clocksource_get_next(); - clocksource_calculate_interval(clock, NTP_INTERVAL_LENGTH); + clocksource_calculate_interval(clock, + (unsigned long)(current_tick_length()>>TICK_LENGTH_SHIFT)); clock->cycle_last = clocksource_read(clock); xtime.tv_sec = sec; xtime.tv_nsec = 0; set_normalized_timespec(&wall_to_monotonic, -xtime.tv_sec, -xtime.tv_nsec); + update_xtime_cache(0); total_sleep_time = 0; - write_sequnlock_irqrestore(&xtime_lock, flags); } @@ -300,6 +291,7 @@ static int timekeeping_resume(struct sys_device *dev) } /* Make sure that we have the correct xtime reference */ timespec_add_ns(&xtime, timekeeping_suspend_nsecs); + update_xtime_cache(0); /* re-base the last cycle value */ clock->cycle_last = clocksource_read(clock); clock->error = 0; @@ -335,9 +327,9 @@ static int timekeeping_suspend(struct sys_device *dev, pm_message_t state) /* sysfs resume/suspend bits for timekeeping */ static struct sysdev_class timekeeping_sysclass = { + .name = "timekeeping", .resume = timekeeping_resume, .suspend = timekeeping_suspend, - set_kset_name("timekeeping"), }; static struct sys_device device_timer = { |