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Diffstat (limited to 'arch/x86_64/kernel/time.c')
-rw-r--r--arch/x86_64/kernel/time.c24
1 files changed, 12 insertions, 12 deletions
diff --git a/arch/x86_64/kernel/time.c b/arch/x86_64/kernel/time.c
index 67841d1..ee5ce3d 100644
--- a/arch/x86_64/kernel/time.c
+++ b/arch/x86_64/kernel/time.c
@@ -48,6 +48,8 @@ static void cpufreq_delayed_get(void);
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);
@@ -475,7 +477,7 @@ static irqreturn_t timer_interrupt(int irq, void *dev_id, struct pt_regs *regs)
return IRQ_HANDLED;
}
-static unsigned int cyc2ns_scale;
+static unsigned int cyc2ns_scale __read_mostly;
#define CYC2NS_SCALE_FACTOR 10 /* 2^10, carefully chosen */
static inline void set_cyc2ns_scale(unsigned long cpu_khz)
@@ -901,6 +903,7 @@ static struct irqaction irq0 = {
void __init time_init(void)
{
char *timename;
+ char *gtod;
#ifdef HPET_HACK_ENABLE_DANGEROUS
if (!vxtime.hpet_address) {
@@ -945,21 +948,19 @@ void __init time_init(void)
timename = "PIT";
}
- 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);
- 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);
-
-#ifndef CONFIG_SMP
- time_init_gtod();
-#endif
}
/*
@@ -981,9 +982,9 @@ __cpuinit int unsynchronized_tsc(void)
}
/*
- * 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)
{
char *timetype;
@@ -1011,8 +1012,7 @@ void __init time_init_gtod(void)
timetype = hpet_use_timer ? "HPET/TSC" : "PIT/TSC";
vxtime.mode = VXTIME_TSC;
}
-
- printk(KERN_INFO "time.c: Using %s based timekeeping.\n", timetype);
+ return timetype;
}
__setup("report_lost_ticks", time_setup);
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