diff options
| -rw-r--r-- | include/linux/timex.h | 4 | ||||
| -rw-r--r-- | kernel/time/ntp.c | 16 | ||||
| -rw-r--r-- | kernel/time/timekeeping.c | 5 |
3 files changed, 6 insertions, 19 deletions
diff --git a/include/linux/timex.h b/include/linux/timex.h index 5994d39de77..da431f8c5c6 100644 --- a/include/linux/timex.h +++ b/include/linux/timex.h @@ -239,8 +239,8 @@ static inline int ntp_synced(void) #endif #define NTP_INTERVAL_LENGTH (NSEC_PER_SEC/NTP_INTERVAL_FREQ) -/* Returns how long ticks are at present, in ns / 2^(SHIFT_SCALE-10). */ -extern u64 current_tick_length(void); +/* Returns how long ticks are at present, in ns / 2^NTP_SCALE_SHIFT. */ +extern u64 tick_length; extern void second_overflow(void); extern void update_ntp_one_tick(void); diff --git a/kernel/time/ntp.c b/kernel/time/ntp.c index a8fd1ba1ef1..df9718bac8d 100644 --- a/kernel/time/ntp.c +++ b/kernel/time/ntp.c @@ -23,7 +23,8 @@ */ unsigned long tick_usec = TICK_USEC; /* USER_HZ period (usec) */ unsigned long tick_nsec; /* ACTHZ period (nsec) */ -static u64 tick_length, tick_length_base; +u64 tick_length; +static u64 tick_length_base; #define MAX_TICKADJ 500 /* microsecs */ #define MAX_TICKADJ_SCALED (((u64)(MAX_TICKADJ * NSEC_PER_USEC) << \ @@ -203,19 +204,6 @@ void second_overflow(void) } } -/* - * Return how long ticks are at the moment, that is, how much time - * update_wall_time_one_tick will add to xtime next time we call it - * (assuming no calls to do_adjtimex in the meantime). - * The return value is in fixed-point nanoseconds shifted by the - * specified number of bits to the right of the binary point. - * This function has no side-effects. - */ -u64 current_tick_length(void) -{ - return tick_length; -} - #ifdef CONFIG_GENERIC_CMOS_UPDATE /* Disable the cmos update - used by virtualization and embedded */ diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index a26429bc772..7e74d809206 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -380,8 +380,7 @@ static __always_inline int clocksource_bigadjust(s64 error, s64 *interval, * Now calculate the error in (1 << look_ahead) ticks, but first * remove the single look ahead already included in the error. */ - tick_error = current_tick_length() >> - (NTP_SCALE_SHIFT - clock->shift + 1); + tick_error = tick_length >> (NTP_SCALE_SHIFT - clock->shift + 1); tick_error -= clock->xtime_interval >> 1; error = ((error - tick_error) >> look_ahead) + tick_error; @@ -473,7 +472,7 @@ void update_wall_time(void) } /* accumulate error between NTP and clock interval */ - clock->error += current_tick_length(); + clock->error += tick_length; clock->error -= clock->xtime_interval << (NTP_SCALE_SHIFT - clock->shift); } |