[PATCH] i386: Kill references to xtime
Remove all references to xtime in i386 and replace them w/
get/set_timeofday(). Requires some ugly and uncertain changes to APM, but
has been lightly tested to work.
Signed-off-by: John Stultz <johnstul@us.ibm.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/i386/kernel/apm.c b/arch/i386/kernel/apm.c
index 24fd577..ff9ce4b 100644
--- a/arch/i386/kernel/apm.c
+++ b/arch/i386/kernel/apm.c
@@ -1154,9 +1154,11 @@
static void set_time(void)
{
+ struct timespec ts;
if (got_clock_diff) { /* Must know time zone in order to set clock */
- xtime.tv_sec = get_cmos_time() + clock_cmos_diff;
- xtime.tv_nsec = 0;
+ ts.tv_sec = get_cmos_time() + clock_cmos_diff;
+ ts.tv_nsec = 0;
+ do_settimeofday(&ts);
}
}
@@ -1232,13 +1234,8 @@
restore_processor_state();
local_irq_disable();
- write_seqlock(&xtime_lock);
- spin_lock(&i8253_lock);
- reinit_timer();
set_time();
-
- spin_unlock(&i8253_lock);
- write_sequnlock(&xtime_lock);
+ reinit_timer();
if (err == APM_NO_ERROR)
err = APM_SUCCESS;
@@ -1365,9 +1362,7 @@
ignore_bounce = 1;
if ((event != APM_NORMAL_RESUME)
|| (ignore_normal_resume == 0)) {
- write_seqlock_irq(&xtime_lock);
set_time();
- write_sequnlock_irq(&xtime_lock);
device_resume();
pm_send_all(PM_RESUME, (void *)0);
queue_event(event, NULL);
@@ -1383,9 +1378,7 @@
break;
case APM_UPDATE_TIME:
- write_seqlock_irq(&xtime_lock);
set_time();
- write_sequnlock_irq(&xtime_lock);
break;
case APM_CRITICAL_SUSPEND:
diff --git a/arch/i386/kernel/time.c b/arch/i386/kernel/time.c
index edd00f6..6f333e7 100644
--- a/arch/i386/kernel/time.c
+++ b/arch/i386/kernel/time.c
@@ -288,7 +288,7 @@
unsigned long flags;
unsigned long sec;
unsigned long sleep_length;
-
+ struct timespec ts;
#ifdef CONFIG_HPET_TIMER
if (is_hpet_enabled())
hpet_reenable();
@@ -296,9 +296,11 @@
setup_pit_timer();
sec = get_cmos_time() + clock_cmos_diff;
sleep_length = (get_cmos_time() - sleep_start) * HZ;
+
+ ts.tv_sec = sec;
+ ts.tv_nsec = 0;
+ do_settimeofday(&ts);
write_seqlock_irqsave(&xtime_lock, flags);
- xtime.tv_sec = sec;
- xtime.tv_nsec = 0;
jiffies_64 += sleep_length;
wall_jiffies += sleep_length;
write_sequnlock_irqrestore(&xtime_lock, flags);
@@ -334,10 +336,11 @@
/* Duplicate of time_init() below, with hpet_enable part added */
static void __init hpet_time_init(void)
{
- xtime.tv_sec = get_cmos_time();
- xtime.tv_nsec = (INITIAL_JIFFIES % HZ) * (NSEC_PER_SEC / HZ);
- set_normalized_timespec(&wall_to_monotonic,
- -xtime.tv_sec, -xtime.tv_nsec);
+ struct timespec ts;
+ ts.tv_sec = get_cmos_time();
+ ts.tv_nsec = (INITIAL_JIFFIES % HZ) * (NSEC_PER_SEC / HZ);
+
+ do_settimeofday(&ts);
if ((hpet_enable() >= 0) && hpet_use_timer) {
printk("Using HPET for base-timer\n");
@@ -349,6 +352,7 @@
void __init time_init(void)
{
+ struct timespec ts;
#ifdef CONFIG_HPET_TIMER
if (is_hpet_capable()) {
/*
@@ -359,10 +363,10 @@
return;
}
#endif
- xtime.tv_sec = get_cmos_time();
- xtime.tv_nsec = (INITIAL_JIFFIES % HZ) * (NSEC_PER_SEC / HZ);
- set_normalized_timespec(&wall_to_monotonic,
- -xtime.tv_sec, -xtime.tv_nsec);
+ ts.tv_sec = get_cmos_time();
+ ts.tv_nsec = (INITIAL_JIFFIES % HZ) * (NSEC_PER_SEC / HZ);
+
+ do_settimeofday(&ts);
time_init_hook();
}