irqreturn_t timer_interrupt (int irq, void *dev_id)
{
unsigned long next;
next = get_linux_timer();
again:
while ((signed long)(get_ccount() - next) > 0) {
profile_tick(CPU_PROFILING);
#ifndef CONFIG_SMP
update_process_times(user_mode(get_irq_regs()));
#endif
xtime_update(1); /* Linux handler in kernel/time/timekeeping */
/* Note that writing CCOMPARE clears the interrupt. */
next += CCOUNT_PER_JIFFY;
set_linux_timer(next);
}
/* Allow platform to do something useful (Wdog). */
platform_heartbeat();
/* Make sure we didn't miss any tick... */
if ((signed long)(get_ccount() - next) > 0)
goto again;
return IRQ_HANDLED;
}
irqreturn_t timer_interrupt (int irq, void *dev_id)
{
unsigned long next;
next = get_linux_timer();
again:
while ((signed long)(get_ccount() - next) > 0) {
profile_tick(CPU_PROFILING);
#ifndef CONFIG_SMP
update_process_times(user_mode(get_irq_regs()));
#endif
xtime_update(1); /* */
/* */
next += CCOUNT_PER_JIFFY;
set_linux_timer(next);
}
/* */
platform_heartbeat();
/* */
if ((signed long)(get_ccount() - next) > 0)
goto again;
return IRQ_HANDLED;
}
irqreturn_t timer_interrupt(int irq, void *dev_id)
{
struct clock_event_device *evt = &this_cpu_ptr(&ccount_timer)->evt;
set_linux_timer(get_linux_timer());
evt->event_handler(evt);
/* Allow platform to do something useful (Wdog). */
platform_heartbeat();
return IRQ_HANDLED;
}
irqreturn_t timer_interrupt (int irq, void *dev_id)
{
unsigned long next;
next = get_linux_timer();
again:
while ((signed long)(get_ccount() - next) > 0) {
profile_tick(CPU_PROFILING);
#ifndef CONFIG_SMP
update_process_times(user_mode(get_irq_regs()));
#endif
write_seqlock(&xtime_lock);
last_ccount_stamp = next;
next += CCOUNT_PER_JIFFY;
do_timer (1); /* Linux handler in kernel/timer.c */
if (ntp_synced() &&
xtime.tv_sec - last_rtc_update >= 659 &&
abs((xtime.tv_nsec/1000)-(1000000-1000000/HZ))<5000000/HZ) {
if (platform_set_rtc_time(xtime.tv_sec+1) == 0)
last_rtc_update = xtime.tv_sec+1;
else
/* Do it again in 60 s */
last_rtc_update += 60;
}
write_sequnlock(&xtime_lock);
}
/* NOTE: writing CCOMPAREn clears the interrupt. */
set_linux_timer (next);
/* Make sure we didn't miss any tick... */
if ((signed long)(get_ccount() - next) > 0)
goto again;
/* Allow platform to do something useful (Wdog). */
platform_heartbeat();
return IRQ_HANDLED;
}
