static int gic_clockevent_init(void)
{
if (!cpu_has_counter || !gic_frequency)
return -ENXIO;
setup_percpu_irq(gic_timer_irq, &gic_compare_irqaction);
register_cpu_notifier(&gic_cpu_nb);
gic_clockevent_cpu_init(this_cpu_ptr(&gic_clockevent_device));
return 0;
}
static int gic_cpu_notifier(struct notifier_block *nb, unsigned long action,
void *data)
{
switch (action & ~CPU_TASKS_FROZEN) {
case CPU_STARTING:
gic_clockevent_cpu_init(this_cpu_ptr(&gic_clockevent_device));
break;
case CPU_DYING:
gic_clockevent_cpu_exit(this_cpu_ptr(&gic_clockevent_device));
break;
}
return NOTIFY_OK;
}
static int gic_starting_cpu(unsigned int cpu)
{
gic_clockevent_cpu_init(cpu, this_cpu_ptr(&gic_clockevent_device));
return 0;
}