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-rw-r--r--arch/x86_64/kernel/time.c71
1 files changed, 32 insertions, 39 deletions
diff --git a/arch/x86_64/kernel/time.c b/arch/x86_64/kernel/time.c
index 25bc58aac2a5..7b56aa5b6c3f 100644
--- a/arch/x86_64/kernel/time.c
+++ b/arch/x86_64/kernel/time.c
@@ -251,8 +251,8 @@ static void set_rtc_mmss(unsigned long nowtime)
251#endif 251#endif
252 252
253 { 253 {
254 BIN_TO_BCD(real_seconds); 254 BIN_TO_BCD(real_seconds);
255 BIN_TO_BCD(real_minutes); 255 BIN_TO_BCD(real_minutes);
256 CMOS_WRITE(real_seconds, RTC_SECONDS); 256 CMOS_WRITE(real_seconds, RTC_SECONDS);
257 CMOS_WRITE(real_minutes, RTC_MINUTES); 257 CMOS_WRITE(real_minutes, RTC_MINUTES);
258 } 258 }
@@ -289,12 +289,11 @@ unsigned long long monotonic_clock(void)
289 last_offset = vxtime.last; 289 last_offset = vxtime.last;
290 base = monotonic_base; 290 base = monotonic_base;
291 this_offset = hpet_readl(HPET_COUNTER); 291 this_offset = hpet_readl(HPET_COUNTER);
292
293 } while (read_seqretry(&xtime_lock, seq)); 292 } while (read_seqretry(&xtime_lock, seq));
294 offset = (this_offset - last_offset); 293 offset = (this_offset - last_offset);
295 offset *=(NSEC_PER_SEC/HZ)/hpet_tick; 294 offset *=(NSEC_PER_SEC/HZ)/hpet_tick;
296 return base + offset; 295 return base + offset;
297 }else{ 296 } else {
298 do { 297 do {
299 seq = read_seqbegin(&xtime_lock); 298 seq = read_seqbegin(&xtime_lock);
300 299
@@ -305,8 +304,6 @@ unsigned long long monotonic_clock(void)
305 offset = (this_offset - last_offset)*1000/cpu_khz; 304 offset = (this_offset - last_offset)*1000/cpu_khz;
306 return base + offset; 305 return base + offset;
307 } 306 }
308
309
310} 307}
311EXPORT_SYMBOL(monotonic_clock); 308EXPORT_SYMBOL(monotonic_clock);
312 309
@@ -530,36 +527,35 @@ unsigned long get_cmos_time(void)
530 timeout--; 527 timeout--;
531 } 528 }
532 529
533/* 530 /*
534 * Here we are safe to assume the registers won't change for a whole second, so 531 * Here we are safe to assume the registers won't change for a whole
535 * we just go ahead and read them. 532 * second, so we just go ahead and read them.
536 */ 533 */
537 534 sec = CMOS_READ(RTC_SECONDS);
538 sec = CMOS_READ(RTC_SECONDS); 535 min = CMOS_READ(RTC_MINUTES);
539 min = CMOS_READ(RTC_MINUTES); 536 hour = CMOS_READ(RTC_HOURS);
540 hour = CMOS_READ(RTC_HOURS); 537 day = CMOS_READ(RTC_DAY_OF_MONTH);
541 day = CMOS_READ(RTC_DAY_OF_MONTH); 538 mon = CMOS_READ(RTC_MONTH);
542 mon = CMOS_READ(RTC_MONTH); 539 year = CMOS_READ(RTC_YEAR);
543 year = CMOS_READ(RTC_YEAR);
544 540
545 spin_unlock_irqrestore(&rtc_lock, flags); 541 spin_unlock_irqrestore(&rtc_lock, flags);
546 542
547/* 543 /*
548 * We know that x86-64 always uses BCD format, no need to check the config 544 * We know that x86-64 always uses BCD format, no need to check the
549 * register. 545 * config register.
550 */ 546 */
551 547
552 BCD_TO_BIN(sec); 548 BCD_TO_BIN(sec);
553 BCD_TO_BIN(min); 549 BCD_TO_BIN(min);
554 BCD_TO_BIN(hour); 550 BCD_TO_BIN(hour);
555 BCD_TO_BIN(day); 551 BCD_TO_BIN(day);
556 BCD_TO_BIN(mon); 552 BCD_TO_BIN(mon);
557 BCD_TO_BIN(year); 553 BCD_TO_BIN(year);
558 554
559/* 555 /*
560 * x86-64 systems only exists since 2002. 556 * x86-64 systems only exists since 2002.
561 * This will work up to Dec 31, 2100 557 * This will work up to Dec 31, 2100
562 */ 558 */
563 year += 2000; 559 year += 2000;
564 560
565 return mktime(year, mon, day, hour, min, sec); 561 return mktime(year, mon, day, hour, min, sec);
@@ -737,7 +733,7 @@ static __init int late_hpet_init(void)
737 unsigned int ntimer; 733 unsigned int ntimer;
738 734
739 if (!vxtime.hpet_address) 735 if (!vxtime.hpet_address)
740 return -1; 736 return -1;
741 737
742 memset(&hd, 0, sizeof (hd)); 738 memset(&hd, 0, sizeof (hd));
743 739
@@ -871,8 +867,6 @@ static struct irqaction irq0 = {
871 timer_interrupt, SA_INTERRUPT, CPU_MASK_NONE, "timer", NULL, NULL 867 timer_interrupt, SA_INTERRUPT, CPU_MASK_NONE, "timer", NULL, NULL
872}; 868};
873 869
874extern void __init config_acpi_tables(void);
875
876void __init time_init(void) 870void __init time_init(void)
877{ 871{
878 char *timename; 872 char *timename;
@@ -992,6 +986,10 @@ __setup("report_lost_ticks", time_setup);
992static long clock_cmos_diff; 986static long clock_cmos_diff;
993static unsigned long sleep_start; 987static unsigned long sleep_start;
994 988
989/*
990 * sysfs support for the timer.
991 */
992
995static int timer_suspend(struct sys_device *dev, pm_message_t state) 993static int timer_suspend(struct sys_device *dev, pm_message_t state)
996{ 994{
997 /* 995 /*
@@ -1034,7 +1032,6 @@ static struct sysdev_class timer_sysclass = {
1034 set_kset_name("timer"), 1032 set_kset_name("timer"),
1035}; 1033};
1036 1034
1037
1038/* XXX this driverfs stuff should probably go elsewhere later -john */ 1035/* XXX this driverfs stuff should probably go elsewhere later -john */
1039static struct sys_device device_timer = { 1036static struct sys_device device_timer = {
1040 .id = 0, 1037 .id = 0,
@@ -1276,8 +1273,6 @@ irqreturn_t hpet_rtc_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1276} 1273}
1277#endif 1274#endif
1278 1275
1279
1280
1281static int __init nohpet_setup(char *s) 1276static int __init nohpet_setup(char *s)
1282{ 1277{
1283 nohpet = 1; 1278 nohpet = 1;
@@ -1294,5 +1289,3 @@ static int __init notsc_setup(char *s)
1294} 1289}
1295 1290
1296__setup("notsc", notsc_setup); 1291__setup("notsc", notsc_setup);
1297
1298