TIMER_IRQ
return (BITS_PER_LONG - bit) + TIMER_IRQ;
irq_set_handler(TIMER_IRQ, handle_percpu_irq);
if (request_irq(TIMER_IRQ, timer_interrupt, flags, "timer", NULL))
cpu_eiem = EIEM_MASK(IPI_IRQ) | EIEM_MASK(TIMER_IRQ);
cpu_eiem = EIEM_MASK(TIMER_IRQ);
gsc_writel(TIMER_IRQ - CPU_IRQ_BASE, p->hpa);
cd->irq = TIMER_IRQ;
irq_set_chip_and_handler(TIMER_IRQ, &alarm_irq_type, handle_percpu_irq);
do_IRQ(TIMER_IRQ, regs);
err = request_irq(TIMER_IRQ, um_timer, IRQF_TIMER, "hr timer", NULL);