diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/time/ntp.c | 9 | ||||
| -rw-r--r-- | kernel/time/ntp_internal.h | 11 | ||||
| -rw-r--r-- | kernel/time/timekeeping.c | 21 |
3 files changed, 36 insertions, 5 deletions
diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c index 457d2ba245f..8b107068d7e 100644 --- a/kernel/time/ntp.c +++ b/kernel/time/ntp.c @@ -18,6 +18,7 @@ #include <linux/rtc.h> #include "tick-internal.h" +#include "ntp_internal.h" /* * NTP timekeeping variables: @@ -661,7 +662,7 @@ int ntp_validate_timex(struct timex *txc) * adjtimex mainly allows reading (and writing, if superuser) of * kernel time-keeping variables. used by xntpd. */ -int do_adjtimex(struct timex *txc) +int __do_adjtimex(struct timex *txc) { struct timespec ts; u32 time_tai, orig_tai; @@ -911,7 +912,7 @@ static void hardpps_update_phase(long error) } /* - * hardpps() - discipline CPU clock oscillator to external PPS signal + * __hardpps() - discipline CPU clock oscillator to external PPS signal * * This routine is called at each PPS signal arrival in order to * discipline the CPU clock oscillator to the PPS signal. It takes two @@ -922,7 +923,7 @@ static void hardpps_update_phase(long error) * This code is based on David Mills's reference nanokernel * implementation. It was mostly rewritten but keeps the same idea. */ -void hardpps(const struct timespec *phase_ts, const struct timespec *raw_ts) +void __hardpps(const struct timespec *phase_ts, const struct timespec *raw_ts) { struct pps_normtime pts_norm, freq_norm; unsigned long flags; @@ -976,8 +977,6 @@ void hardpps(const struct timespec *phase_ts, const struct timespec *raw_ts) raw_spin_unlock_irqrestore(&ntp_lock, flags); } -EXPORT_SYMBOL(hardpps); - #endif /* CONFIG_NTP_PPS */ static int __init ntp_tick_adj_setup(char *str) diff --git a/kernel/time/ntp_internal.h b/kernel/time/ntp_internal.h new file mode 100644 index 00000000000..fdee80cb34f --- /dev/null +++ b/kernel/time/ntp_internal.h @@ -0,0 +1,11 @@ +#ifndef _LINUX_NTP_INTERNAL_H +#define _LINUX_NTP_INTERNAL_H + +extern void ntp_init(void); +extern void ntp_clear(void); +/* Returns how long ticks are at present, in ns / 2^NTP_SCALE_SHIFT. */ +extern u64 ntp_tick_length(void); +extern int second_overflow(unsigned long secs); +extern int __do_adjtimex(struct timex *); +extern void __hardpps(const struct timespec *, const struct timespec *); +#endif /* _LINUX_NTP_INTERNAL_H */ diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index c5feb7aa3ac..a138ec2cde3 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -24,6 +24,7 @@ #include <linux/pvclock_gtod.h> #include "tick-internal.h" +#include "ntp_internal.h" static struct timekeeper timekeeper; static DEFINE_RAW_SPINLOCK(timekeeper_lock); @@ -1613,6 +1614,26 @@ ktime_t ktime_get_monotonic_offset(void) EXPORT_SYMBOL_GPL(ktime_get_monotonic_offset); /** + * do_adjtimex() - Accessor function to NTP __do_adjtimex function + */ +int do_adjtimex(struct timex *txc) +{ + return __do_adjtimex(txc); +} + + +#ifdef CONFIG_NTP_PPS +/** + * hardpps() - Accessor function to NTP __hardpps function + */ +void hardpps(const struct timespec *phase_ts, const struct timespec *raw_ts) +{ + __hardpps(phase_ts, raw_ts); +} +EXPORT_SYMBOL(hardpps); +#endif + +/** * xtime_update() - advances the timekeeping infrastructure * @ticks: number of ticks, that have elapsed since the last call. * |