diff options
author | David S. Miller <davem@davemloft.net> | 2009-09-24 15:13:11 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2009-09-24 15:13:11 -0700 |
commit | 8b3f6af86378d0a10ca2f1ded1da124aef13b62c (patch) | |
tree | de6ca90295730343c495be8d98be8efa322140ef /arch/s390/kernel/time.c | |
parent | 139d6065c83071d5f66cd013a274a43699f8e2c1 (diff) | |
parent | 94e0fb086fc5663c38bbc0fe86d698be8314f82f (diff) |
Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Conflicts:
drivers/staging/Kconfig
drivers/staging/Makefile
drivers/staging/cpc-usb/TODO
drivers/staging/cpc-usb/cpc-usb_drv.c
drivers/staging/cpc-usb/cpc.h
drivers/staging/cpc-usb/cpc_int.h
drivers/staging/cpc-usb/cpcusb.h
Diffstat (limited to 'arch/s390/kernel/time.c')
-rw-r--r-- | arch/s390/kernel/time.c | 39 |
1 files changed, 11 insertions, 28 deletions
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c index 54e327e9af0..34162a0b2ca 100644 --- a/arch/s390/kernel/time.c +++ b/arch/s390/kernel/time.c @@ -91,6 +91,7 @@ void tod_to_timeval(__u64 todval, struct timespec *xtime) todval -= (sec * 1000000) << 12; xtime->tv_nsec = ((todval * 1000) >> 12); } +EXPORT_SYMBOL(tod_to_timeval); void clock_comparator_work(void) { @@ -183,12 +184,14 @@ static void timing_alert_interrupt(__u16 code) static void etr_reset(void); static void stp_reset(void); -unsigned long read_persistent_clock(void) +void read_persistent_clock(struct timespec *ts) { - struct timespec ts; + tod_to_timeval(get_clock() - TOD_UNIX_EPOCH, ts); +} - tod_to_timeval(get_clock() - TOD_UNIX_EPOCH, &ts); - return ts.tv_sec; +void read_boot_clock(struct timespec *ts) +{ + tod_to_timeval(sched_clock_base_cc - TOD_UNIX_EPOCH, ts); } static cycle_t read_tod_clock(struct clocksource *cs) @@ -206,6 +209,10 @@ static struct clocksource clocksource_tod = { .flags = CLOCK_SOURCE_IS_CONTINUOUS, }; +struct clocksource * __init clocksource_default_clock(void) +{ + return &clocksource_tod; +} void update_vsyscall(struct timespec *wall_time, struct clocksource *clock) { @@ -243,10 +250,6 @@ void update_vsyscall_tz(void) */ void __init time_init(void) { - struct timespec ts; - unsigned long flags; - cycle_t now; - /* Reset time synchronization interfaces. */ etr_reset(); stp_reset(); @@ -262,26 +265,6 @@ void __init time_init(void) if (clocksource_register(&clocksource_tod) != 0) panic("Could not register TOD clock source"); - /* - * The TOD clock is an accurate clock. The xtime should be - * initialized in a way that the difference between TOD and - * xtime is reasonably small. Too bad that timekeeping_init - * sets xtime.tv_nsec to zero. In addition the clock source - * change from the jiffies clock source to the TOD clock - * source add another error of up to 1/HZ second. The same - * function sets wall_to_monotonic to a value that is too - * small for /proc/uptime to be accurate. - * Reset xtime and wall_to_monotonic to sane values. - */ - write_seqlock_irqsave(&xtime_lock, flags); - now = get_clock(); - tod_to_timeval(now - TOD_UNIX_EPOCH, &xtime); - clocksource_tod.cycle_last = now; - clocksource_tod.raw_time = xtime; - tod_to_timeval(sched_clock_base_cc - TOD_UNIX_EPOCH, &ts); - set_normalized_timespec(&wall_to_monotonic, -ts.tv_sec, -ts.tv_nsec); - write_sequnlock_irqrestore(&xtime_lock, flags); - /* Enable TOD clock interrupts on the boot cpu. */ init_cpu_timer(); |