From 7563431107f6debf57c1dbecfb9498cf31a1c036 Mon Sep 17 00:00:00 2001 From: john stultz Date: Fri, 1 May 2009 13:10:28 -0700 Subject: time: sh: convert to use arch_getoffset() infrastructure Convert sh to use GENERIC_TIME via the arch_getoffset() infrastructure. Signed-off-by: John Stultz Signed-off-by: Andrew Morton Signed-off-by: Paul Mundt --- arch/sh/kernel/time_32.c | 63 ++++-------------------------------------------- 1 file changed, 5 insertions(+), 58 deletions(-) (limited to 'arch/sh/kernel/time_32.c') diff --git a/arch/sh/kernel/time_32.c b/arch/sh/kernel/time_32.c index 457332116e1..9d34dff1499 100644 --- a/arch/sh/kernel/time_32.c +++ b/arch/sh/kernel/time_32.c @@ -83,65 +83,12 @@ static int __init rtc_generic_init(void) } module_init(rtc_generic_init); -#ifndef CONFIG_GENERIC_TIME -void do_gettimeofday(struct timeval *tv) +#ifdef CONFIG_ARCH_USES_GETTIMEOFFSET +u32 arch_gettimeoffset(void) { - unsigned long flags; - unsigned long seq; - unsigned long usec, sec; - - do { - /* - * Turn off IRQs when grabbing xtime_lock, so that - * the sys_timer get_offset code doesn't have to handle it. - */ - seq = read_seqbegin_irqsave(&xtime_lock, flags); - usec = get_timer_offset(); - sec = xtime.tv_sec; - usec += xtime.tv_nsec / NSEC_PER_USEC; - } while (read_seqretry_irqrestore(&xtime_lock, seq, flags)); - - while (usec >= 1000000) { - usec -= 1000000; - sec++; - } - - tv->tv_sec = sec; - tv->tv_usec = usec; -} -EXPORT_SYMBOL(do_gettimeofday); - -int do_settimeofday(struct timespec *tv) -{ - time_t wtm_sec, sec = tv->tv_sec; - long wtm_nsec, nsec = tv->tv_nsec; - - if ((unsigned long)tv->tv_nsec >= NSEC_PER_SEC) - return -EINVAL; - - write_seqlock_irq(&xtime_lock); - /* - * This is revolting. We need to set "xtime" correctly. However, the - * value in this location is the value at the most recent update of - * wall time. Discover what correction gettimeofday() would have - * made, and then undo it! - */ - nsec -= get_timer_offset() * NSEC_PER_USEC; - - wtm_sec = wall_to_monotonic.tv_sec + (xtime.tv_sec - sec); - wtm_nsec = wall_to_monotonic.tv_nsec + (xtime.tv_nsec - nsec); - - set_normalized_timespec(&xtime, sec, nsec); - set_normalized_timespec(&wall_to_monotonic, wtm_sec, wtm_nsec); - - ntp_clear(); - write_sequnlock_irq(&xtime_lock); - clock_was_set(); - - return 0; + return get_timer_offset() * 1000; } -EXPORT_SYMBOL(do_settimeofday); -#endif /* !CONFIG_GENERIC_TIME */ +#endif /* CONFIG_ARCH_USES_GETTIMEOFFSET */ /* last time the RTC clock got updated */ static long last_rtc_update; @@ -238,7 +185,7 @@ struct clocksource clocksource_sh = { .name = "SuperH", }; -#ifdef CONFIG_GENERIC_TIME +#ifndef CONFIG_ARCH_USES_GETTIMEOFFSET unsigned long long sched_clock(void) { unsigned long long cycles; -- cgit v1.2.3-70-g09d2