EXPORT_SYMBOL(jiffies_64);
-/*
- * Our system timer.
- */
-struct sys_timer *system_timer;
-
extern unsigned long wall_jiffies;
/* this needs a better home */
return 0;
}
+/*
+ * hook for getting the time offset. Note that it is
+ * always called with interrupts disabled.
+ */
+unsigned long (*gettimeoffset)(void) = dummy_gettimeoffset;
+
/*
* Scheduler clock - returns current time in nanosec units.
* This is the default implementation. Sub-architecture
do {
seq = read_seqbegin_irqsave(&xtime_lock, flags);
- usec = system_timer->offset();
+ usec = gettimeoffset();
lost = jiffies - wall_jiffies;
if (lost)
* wall time. Discover what correction gettimeofday() would have
* done, and then undo it!
*/
- nsec -= system_timer->offset() * NSEC_PER_USEC;
+ nsec -= gettimeoffset() * NSEC_PER_USEC;
nsec -= (jiffies - wall_jiffies) * TICK_NSEC;
wtm_sec = wall_to_monotonic.tv_sec + (xtime.tv_sec - sec);
}
EXPORT_SYMBOL(restore_time_delta);
-/*
- * Kernel system timer support.
- */
void timer_tick(struct pt_regs *regs)
{
profile_tick(CPU_PROFILING, regs);
do_leds();
do_set_rtc();
do_timer(regs);
-#ifndef CONFIG_SMP
- update_process_times(user_mode(regs));
-#endif
-}
-
-#ifdef CONFIG_PM
-static int timer_suspend(struct sys_device *dev, u32 state)
-{
- struct sys_timer *timer = container_of(dev, struct sys_timer, dev);
-
- if (timer->suspend != NULL)
- timer->suspend();
-
- return 0;
-}
-
-static int timer_resume(struct sys_device *dev)
-{
- struct sys_timer *timer = container_of(dev, struct sys_timer, dev);
-
- if (timer->resume != NULL)
- timer->resume();
-
- return 0;
-}
-#else
-#define timer_suspend NULL
-#define timer_resume NULL
-#endif
-
-static struct sysdev_class timer_sysclass = {
- set_kset_name("timer"),
- .suspend = timer_suspend,
- .resume = timer_resume,
-};
-
-static int __init timer_init_sysfs(void)
-{
- int ret = sysdev_class_register(&timer_sysclass);
- if (ret == 0) {
- system_timer->dev.cls = &timer_sysclass;
- ret = sysdev_register(&system_timer->dev);
- }
- return ret;
}
-device_initcall(timer_init_sysfs);
+void (*init_arch_time)(void);
void __init time_init(void)
{
- if (system_timer->offset == NULL)
- system_timer->offset = dummy_gettimeoffset;
- system_timer->init();
+ init_arch_time();
}