void mips_timer_interrupt(void)
{
int irq = 63;
irq_enter();
kstat_this_cpu.irqs[irq]++;
if (r4k_offset == 0)
goto null;
do {
kstat_this_cpu.irqs[irq]++;
do_timer(1);
#ifndef CONFIG_SMP
update_process_times(user_mode(get_irq_regs()));
#endif
r4k_cur += r4k_offset;
ack_r4ktimer(r4k_cur);
} while (((unsigned long)read_c0_count()
- r4k_cur) < 0x7fffffff);
irq_exit();
return;
null:
ack_r4ktimer(0);
irq_exit();
}
void mips_timer_interrupt(struct pt_regs *regs)
{
int irq = 63;
unsigned long count;
int cpu = smp_processor_id();
irq_enter(cpu, irq);
kstat.irqs[cpu][irq]++;
#ifdef CONFIG_PM
printk(KERN_ERR "Unexpected CP0 interrupt\n");
regs->cp0_status &= ~IE_IRQ5; /* disable CP0 interrupt */
return;
#endif
if (r4k_offset == 0)
goto null;
do {
count = read_c0_count();
timerhi += (count < timerlo); /* Wrap around */
timerlo = count;
kstat.irqs[0][irq]++;
do_timer(regs);
r4k_cur += r4k_offset;
ack_r4ktimer(r4k_cur);
} while (((unsigned long)read_c0_count()
- r4k_cur) < 0x7fffffff);
irq_exit(cpu, irq);
if (softirq_pending(cpu))
do_softirq();
return;
null:
ack_r4ktimer(0);
}
/*
* There are a lot of conceptually broken versions of the MIPS timer interrupt
* handler floating around. This one is rather different, but the algorithm
* is probably more robust.
*/
void mips_timer_interrupt(struct pt_regs *regs)
{
int irq = 7; /* FIX ME */
if (r4k_offset == 0) {
goto null;
}
do {
kstat_this_cpu.irqs[irq]++;
do_timer(regs);
#ifndef CONFIG_SMP
update_process_times(user_mode(regs));
#endif
r4k_cur += r4k_offset;
ack_r4ktimer(r4k_cur);
} while (((unsigned long)read_c0_count()
- r4k_cur) < 0x7fffffff);
return;
null:
ack_r4ktimer(0);
}