diff options
Diffstat (limited to 'arch/alpha/kernel/time.c')
| -rw-r--r-- | arch/alpha/kernel/time.c | 15 |
1 files changed, 5 insertions, 10 deletions
diff --git a/arch/alpha/kernel/time.c b/arch/alpha/kernel/time.c index 7c1e444..581ddcc 100644 --- a/arch/alpha/kernel/time.c +++ b/arch/alpha/kernel/time.c @@ -54,8 +54,6 @@ #include "proto.h" #include "irq_impl.h" -extern unsigned long wall_jiffies; /* kernel/timer.c */ - static int set_rtc_mmss(unsigned long); DEFINE_SPINLOCK(rtc_lock); @@ -413,7 +411,7 @@ void do_gettimeofday(struct timeval *tv) { unsigned long flags; - unsigned long sec, usec, lost, seq; + unsigned long sec, usec, seq; unsigned long delta_cycles, delta_usec, partial_tick; do { @@ -423,14 +421,13 @@ do_gettimeofday(struct timeval *tv) sec = xtime.tv_sec; usec = (xtime.tv_nsec / 1000); partial_tick = state.partial_tick; - lost = jiffies - wall_jiffies; } while (read_seqretry_irqrestore(&xtime_lock, seq, flags)); #ifdef CONFIG_SMP /* Until and unless we figure out how to get cpu cycle counters in sync and keep them there, we can't use the rpcc tricks. */ - delta_usec = lost * (1000000 / HZ); + delta_usec = 0; #else /* * usec = cycles * ticks_per_cycle * 2**48 * 1e6 / (2**48 * ticks) @@ -446,8 +443,7 @@ do_gettimeofday(struct timeval *tv) */ delta_usec = (delta_cycles * state.scaled_ticks_per_cycle - + partial_tick - + (lost << FIX_SHIFT)) * 15625; + + partial_tick) * 15625; delta_usec = ((delta_usec / ((1UL << (FIX_SHIFT-6-1)) * HZ)) + 1) / 2; #endif @@ -480,12 +476,11 @@ do_settimeofday(struct timespec *tv) time. Without this, a full-tick error is possible. */ #ifdef CONFIG_SMP - delta_nsec = (jiffies - wall_jiffies) * (NSEC_PER_SEC / HZ); + delta_nsec = 0; #else delta_nsec = rpcc() - state.last_time; delta_nsec = (delta_nsec * state.scaled_ticks_per_cycle - + state.partial_tick - + ((jiffies - wall_jiffies) << FIX_SHIFT)) * 15625; + + state.partial_tick) * 15625; delta_nsec = ((delta_nsec / ((1UL << (FIX_SHIFT-6-1)) * HZ)) + 1) / 2; delta_nsec *= 1000; #endif |
