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yaml
---
r: 62369
b: refs/heads/master
c: ef81ab2
h: refs/heads/master
i:
  62367: 2e5f72d
v: v3
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Thomas Gleixner authored and Linus Torvalds committed Jul 22, 2007
1 parent c4806df commit 9f6451e
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Showing 2 changed files with 2 additions and 40 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: af74522ab782c718783b9d85d6d53b8cbf0c7b17
refs/heads/master: ef81ab2c72e6979367612502fefbb18669e37879
40 changes: 1 addition & 39 deletions trunk/arch/x86_64/kernel/time.c
Original file line number Diff line number Diff line change
Expand Up @@ -193,7 +193,7 @@ static irqreturn_t timer_interrupt(int irq, void *dev_id)
return IRQ_HANDLED;
}

static unsigned long get_cmos_time(void)
unsigned long read_persistent_clock(void)
{
unsigned int year, mon, day, hour, min, sec;
unsigned long flags;
Expand Down Expand Up @@ -367,11 +367,6 @@ void __init time_init(void)
{
if (nohpet)
hpet_address = 0;
xtime.tv_sec = get_cmos_time();
xtime.tv_nsec = 0;

set_normalized_timespec(&wall_to_monotonic,
-xtime.tv_sec, -xtime.tv_nsec);

if (hpet_arch_init())
hpet_address = 0;
Expand Down Expand Up @@ -409,54 +404,21 @@ void __init time_init(void)
setup_irq(0, &irq0);
}


static long clock_cmos_diff;
static unsigned long sleep_start;

/*
* sysfs support for the timer.
*/

static int timer_suspend(struct sys_device *dev, pm_message_t state)
{
/*
* Estimate time zone so that set_time can update the clock
*/
long cmos_time = get_cmos_time();

clock_cmos_diff = -cmos_time;
clock_cmos_diff += get_seconds();
sleep_start = cmos_time;
return 0;
}

static int timer_resume(struct sys_device *dev)
{
unsigned long flags;
unsigned long sec;
unsigned long ctime = get_cmos_time();
long sleep_length = (ctime - sleep_start) * HZ;

if (sleep_length < 0) {
printk(KERN_WARNING "Time skew detected in timer resume!\n");
/* The time after the resume must not be earlier than the time
* before the suspend or some nasty things will happen
*/
sleep_length = 0;
ctime = sleep_start;
}
if (hpet_address)
hpet_reenable();
else
i8254_timer_resume();

sec = ctime + clock_cmos_diff;
write_seqlock_irqsave(&xtime_lock,flags);
xtime.tv_sec = sec;
xtime.tv_nsec = 0;
jiffies += sleep_length;
write_sequnlock_irqrestore(&xtime_lock,flags);
touch_softlockup_watchdog();
return 0;
}

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