SMP time selection originally ran after all CPUs were brought up because
it needed to know the number of CPUs to decide if it needs an MP safe
timer or not.
This is not needed anymore because we know present CPUs early.
This fixes a couple of problems:
- apicmaintimer didn't always work because it relied on state that was
set up time_init_gtod too late.
- The output for the used timer in early kernel log was misleading
because time_init_gtod could actually change it later. Now always
print the final timer choice
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
setup_ioapic_dest();
#endif
setup_ioapic_dest();
#endif
extern void i8254_timer_resume(void);
extern int using_apic_timer;
extern void i8254_timer_resume(void);
extern int using_apic_timer;
+static char *time_init_gtod(void);
+
DEFINE_SPINLOCK(rtc_lock);
DEFINE_SPINLOCK(i8253_lock);
DEFINE_SPINLOCK(rtc_lock);
DEFINE_SPINLOCK(i8253_lock);
void __init time_init(void)
{
char *timename;
void __init time_init(void)
{
char *timename;
#ifdef HPET_HACK_ENABLE_DANGEROUS
if (!vxtime.hpet_address) {
#ifdef HPET_HACK_ENABLE_DANGEROUS
if (!vxtime.hpet_address) {
- printk(KERN_INFO "time.c: Using %ld.%06ld MHz %s timer.\n",
- vxtime_hz / 1000000, vxtime_hz % 1000000, timename);
+ vxtime.mode = VXTIME_TSC;
+ gtod = time_init_gtod();
+
+ printk(KERN_INFO "time.c: Using %ld.%06ld MHz WALL %s GTOD %s timer.\n",
+ vxtime_hz / 1000000, vxtime_hz % 1000000, timename, gtod);
printk(KERN_INFO "time.c: Detected %d.%03d MHz processor.\n",
cpu_khz / 1000, cpu_khz % 1000);
printk(KERN_INFO "time.c: Detected %d.%03d MHz processor.\n",
cpu_khz / 1000, cpu_khz % 1000);
- vxtime.mode = VXTIME_TSC;
vxtime.quot = (1000000L << 32) / vxtime_hz;
vxtime.tsc_quot = (1000L << 32) / cpu_khz;
vxtime.last_tsc = get_cycles_sync();
setup_irq(0, &irq0);
set_cyc2ns_scale(cpu_khz);
vxtime.quot = (1000000L << 32) / vxtime_hz;
vxtime.tsc_quot = (1000L << 32) / cpu_khz;
vxtime.last_tsc = get_cycles_sync();
setup_irq(0, &irq0);
set_cyc2ns_scale(cpu_khz);
-
-#ifndef CONFIG_SMP
- time_init_gtod();
-#endif
- * Decide after all CPUs are booted what mode gettimeofday should use.
+ * Decide what mode gettimeofday should use.
-void __init time_init_gtod(void)
+__init static char *time_init_gtod(void)
timetype = hpet_use_timer ? "HPET/TSC" : "PIT/TSC";
vxtime.mode = VXTIME_TSC;
}
timetype = hpet_use_timer ? "HPET/TSC" : "PIT/TSC";
vxtime.mode = VXTIME_TSC;
}
-
- printk(KERN_INFO "time.c: Using %s based timekeeping.\n", timetype);
}
__setup("report_lost_ticks", time_setup);
}
__setup("report_lost_ticks", time_setup);
extern void ia32_syscall(void);
extern void iommu_hole_init(void);
extern void ia32_syscall(void);
extern void iommu_hole_init(void);
-extern void time_init_gtod(void);
extern int pmtimer_mark_offset(void);
extern void pmtimer_resume(void);
extern void pmtimer_wait(unsigned);
extern int pmtimer_mark_offset(void);
extern void pmtimer_resume(void);
extern void pmtimer_wait(unsigned);