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[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>
This commit is contained in:
john stultz 2006-09-25 23:32:35 -07:00 committed by Linus Torvalds
parent 0f0f1b400c
commit c7f40ff15a
2 changed files with 20 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
arch/i386/kernel/apm.c
View File

@ -1154,9 +1154,11 @@ out:
static void set_time(void) static void set_time(void)
{ {
struct timespec ts;
if (got_clock_diff) { /* Must know time zone in order to set clock */ if (got_clock_diff) { /* Must know time zone in order to set clock */
xtime.tv_sec = get_cmos_time() + clock_cmos_diff; ts.tv_sec = get_cmos_time() + clock_cmos_diff;
xtime.tv_nsec = 0; ts.tv_nsec = 0;
do_settimeofday(&ts);
} }
} }
@ -1232,13 +1234,8 @@ static int suspend(int vetoable)
restore_processor_state(); restore_processor_state();
local_irq_disable(); local_irq_disable();
write_seqlock(&xtime_lock);
spin_lock(&i8253_lock);
reinit_timer();
set_time(); set_time();
reinit_timer();
spin_unlock(&i8253_lock);
write_sequnlock(&xtime_lock);
if (err == APM_NO_ERROR) if (err == APM_NO_ERROR)
err = APM_SUCCESS; err = APM_SUCCESS;
@ -1365,9 +1362,7 @@ static void check_events(void)
ignore_bounce = 1; ignore_bounce = 1;
if ((event != APM_NORMAL_RESUME) if ((event != APM_NORMAL_RESUME)
|| (ignore_normal_resume == 0)) { || (ignore_normal_resume == 0)) {
write_seqlock_irq(&xtime_lock);
set_time(); set_time();
write_sequnlock_irq(&xtime_lock);
device_resume(); device_resume();
pm_send_all(PM_RESUME, (void *)0); pm_send_all(PM_RESUME, (void *)0);
queue_event(event, NULL); queue_event(event, NULL);
@ -1383,9 +1378,7 @@ static void check_events(void)
break; break;
case APM_UPDATE_TIME: case APM_UPDATE_TIME:
write_seqlock_irq(&xtime_lock);
set_time(); set_time();
write_sequnlock_irq(&xtime_lock);
break; break;
case APM_CRITICAL_SUSPEND: case APM_CRITICAL_SUSPEND:

26
arch/i386/kernel/time.c
View File

@ -288,7 +288,7 @@ static int timer_resume(struct sys_device *dev)
unsigned long flags; unsigned long flags;
unsigned long sec; unsigned long sec;
unsigned long sleep_length; unsigned long sleep_length;
struct timespec ts;
#ifdef CONFIG_HPET_TIMER #ifdef CONFIG_HPET_TIMER
if (is_hpet_enabled()) if (is_hpet_enabled())
hpet_reenable(); hpet_reenable();
@ -296,9 +296,11 @@ static int timer_resume(struct sys_device *dev)
setup_pit_timer(); setup_pit_timer();
sec = get_cmos_time() + clock_cmos_diff; sec = get_cmos_time() + clock_cmos_diff;
sleep_length = (get_cmos_time() - sleep_start) * HZ; 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); write_seqlock_irqsave(&xtime_lock, flags);
xtime.tv_sec = sec;
xtime.tv_nsec = 0;
jiffies_64 += sleep_length; jiffies_64 += sleep_length;
wall_jiffies += sleep_length; wall_jiffies += sleep_length;
write_sequnlock_irqrestore(&xtime_lock, flags); write_sequnlock_irqrestore(&xtime_lock, flags);
@ -334,10 +336,11 @@ extern void (*late_time_init)(void);
/* Duplicate of time_init() below, with hpet_enable part added */ /* Duplicate of time_init() below, with hpet_enable part added */
static void __init hpet_time_init(void) static void __init hpet_time_init(void)
{ {
xtime.tv_sec = get_cmos_time(); struct timespec ts;
xtime.tv_nsec = (INITIAL_JIFFIES % HZ) * (NSEC_PER_SEC / HZ); ts.tv_sec = get_cmos_time();
set_normalized_timespec(&wall_to_monotonic, ts.tv_nsec = (INITIAL_JIFFIES % HZ) * (NSEC_PER_SEC / HZ);
-xtime.tv_sec, -xtime.tv_nsec);
do_settimeofday(&ts);
if ((hpet_enable() >= 0) && hpet_use_timer) { if ((hpet_enable() >= 0) && hpet_use_timer) {
printk("Using HPET for base-timer\n"); printk("Using HPET for base-timer\n");
@ -349,6 +352,7 @@ static void __init hpet_time_init(void)
void __init time_init(void) void __init time_init(void)
{ {
struct timespec ts;
#ifdef CONFIG_HPET_TIMER #ifdef CONFIG_HPET_TIMER
if (is_hpet_capable()) { if (is_hpet_capable()) {
/* /*
@ -359,10 +363,10 @@ void __init time_init(void)
return; return;
} }
#endif #endif
xtime.tv_sec = get_cmos_time(); ts.tv_sec = get_cmos_time();
xtime.tv_nsec = (INITIAL_JIFFIES % HZ) * (NSEC_PER_SEC / HZ); ts.tv_nsec = (INITIAL_JIFFIES % HZ) * (NSEC_PER_SEC / HZ);
set_normalized_timespec(&wall_to_monotonic,
-xtime.tv_sec, -xtime.tv_nsec); do_settimeofday(&ts);
time_init_hook(); time_init_hook();
} }