diff options
Diffstat (limited to 'kernel/time')
| -rw-r--r-- | kernel/time/timecompare.c | 5 | ||||
| -rw-r--r-- | kernel/time/timekeeping.c | 9 | ||||
| -rw-r--r-- | kernel/time/timer_list.c | 8 |
3 files changed, 14 insertions, 8 deletions
diff --git a/kernel/time/timecompare.c b/kernel/time/timecompare.c index ac38fbb176c..a9ae369925c 100644 --- a/kernel/time/timecompare.c +++ b/kernel/time/timecompare.c @@ -21,6 +21,7 @@ #include <linux/module.h> #include <linux/slab.h> #include <linux/math64.h> +#include <linux/kernel.h> /* * fixed point arithmetic scale factor for skew @@ -57,11 +58,11 @@ int timecompare_offset(struct timecompare *sync, int index; int num_samples = sync->num_samples; - if (num_samples > sizeof(buffer)/sizeof(buffer[0])) { + if (num_samples > ARRAY_SIZE(buffer)) { samples = kmalloc(sizeof(*samples) * num_samples, GFP_ATOMIC); if (!samples) { samples = buffer; - num_samples = sizeof(buffer)/sizeof(buffer[0]); + num_samples = ARRAY_SIZE(buffer); } } else { samples = buffer; diff --git a/kernel/time/timekeeping.c b/kernel/time/timekeeping.c index 49010d822f7..5bb86da8200 100644 --- a/kernel/time/timekeeping.c +++ b/kernel/time/timekeeping.c @@ -32,6 +32,8 @@ struct timekeeper { cycle_t cycle_interval; /* Number of clock shifted nano seconds in one NTP interval. */ u64 xtime_interval; + /* shifted nano seconds left over when rounding cycle_interval */ + s64 xtime_remainder; /* Raw nano seconds accumulated per NTP interval. */ u32 raw_interval; @@ -62,7 +64,7 @@ struct timekeeper timekeeper; static void timekeeper_setup_internals(struct clocksource *clock) { cycle_t interval; - u64 tmp; + u64 tmp, ntpinterval; timekeeper.clock = clock; clock->cycle_last = clock->read(clock); @@ -70,6 +72,7 @@ static void timekeeper_setup_internals(struct clocksource *clock) /* Do the ns -> cycle conversion first, using original mult */ tmp = NTP_INTERVAL_LENGTH; tmp <<= clock->shift; + ntpinterval = tmp; tmp += clock->mult/2; do_div(tmp, clock->mult); if (tmp == 0) @@ -80,6 +83,7 @@ static void timekeeper_setup_internals(struct clocksource *clock) /* Go back from cycles -> shifted ns */ timekeeper.xtime_interval = (u64) interval * clock->mult; + timekeeper.xtime_remainder = ntpinterval - timekeeper.xtime_interval; timekeeper.raw_interval = ((u64) interval * clock->mult) >> clock->shift; @@ -719,7 +723,8 @@ static cycle_t logarithmic_accumulation(cycle_t offset, int shift) /* Accumulate error between NTP and clock interval */ timekeeper.ntp_error += tick_length << shift; - timekeeper.ntp_error -= timekeeper.xtime_interval << + timekeeper.ntp_error -= + (timekeeper.xtime_interval + timekeeper.xtime_remainder) << (timekeeper.ntp_error_shift + shift); return offset; diff --git a/kernel/time/timer_list.c b/kernel/time/timer_list.c index ab8f5e33fa9..32a19f9397f 100644 --- a/kernel/time/timer_list.c +++ b/kernel/time/timer_list.c @@ -79,26 +79,26 @@ print_active_timers(struct seq_file *m, struct hrtimer_clock_base *base, { struct hrtimer *timer, tmp; unsigned long next = 0, i; - struct rb_node *curr; + struct timerqueue_node *curr; unsigned long flags; next_one: i = 0; raw_spin_lock_irqsave(&base->cpu_base->lock, flags); - curr = base->first; + curr = timerqueue_getnext(&base->active); /* * Crude but we have to do this O(N*N) thing, because * we have to unlock the base when printing: */ while (curr && i < next) { - curr = rb_next(curr); + curr = timerqueue_iterate_next(curr); i++; } if (curr) { - timer = rb_entry(curr, struct hrtimer, node); + timer = container_of(curr, struct hrtimer, node); tmp = *timer; raw_spin_unlock_irqrestore(&base->cpu_base->lock, flags); |