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yaml
---
r: 164503
b: refs/heads/master
c: 4ad4c76
h: refs/heads/master
i:
  164501: 242bfb0
  164499: facc1bc
  164495: ec6c470
v: v3
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john stultz authored and Linus Torvalds committed Sep 22, 2009
1 parent 2da0a45 commit 6ae3ea9
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Showing 3 changed files with 9 additions and 69 deletions.
2 changes: 1 addition & 1 deletion [refs]
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@@ -1,2 +1,2 @@
---
refs/heads/master: ef187fd799c50e15dbb56a0286c81bf467bd0201
refs/heads/master: 4ad4c76b7afb71774b846b322ad2ae42f814331a
6 changes: 6 additions & 0 deletions trunk/arch/m68k/Kconfig
Original file line number Diff line number Diff line change
Expand Up @@ -58,6 +58,12 @@ config HZ
int
default 100

config GENERIC_TIME
def_bool y

config ARCH_USES_GETTIMEOFFSET
def_bool y

mainmenu "Linux/68k Kernel Configuration"

source "init/Kconfig"
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70 changes: 2 additions & 68 deletions trunk/arch/m68k/kernel/time.c
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Expand Up @@ -91,77 +91,11 @@ void __init time_init(void)
mach_sched_init(timer_interrupt);
}

/*
* This version of gettimeofday has near microsecond resolution.
*/
void do_gettimeofday(struct timeval *tv)
u32 arch_gettimeoffset(void)
{
unsigned long flags;
unsigned long seq;
unsigned long usec, sec;
unsigned long max_ntp_tick = tick_usec - tickadj;

do {
seq = read_seqbegin_irqsave(&xtime_lock, flags);

usec = mach_gettimeoffset();

/*
* If time_adjust is negative then NTP is slowing the clock
* so make sure not to go into next possible interval.
* Better to lose some accuracy than have time go backwards..
*/
if (unlikely(time_adjust < 0))
usec = min(usec, max_ntp_tick);

sec = xtime.tv_sec;
usec += xtime.tv_nsec/1000;
} 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 the xtime.tv_nsec
* correctly. However, the value in this location is
* is value at the last tick.
* Discover what correction gettimeofday
* would have done, and then undo it!
*/
nsec -= 1000 * mach_gettimeoffset();

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 mach_gettimeoffset() * 1000;
}

EXPORT_SYMBOL(do_settimeofday);


static int __init rtc_init(void)
{
struct platform_device *pdev;
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