time.c

来自「讲述linux的初始化过程」· C语言 代码 · 共 22 行

/*
 * time.c: Generic SGI handler for (spurious) 8254 interrupts
 *
 * Copyright (C) 1996 David S. Miller ([e-mail])
 */
#include <linux/interrupt.h>
#include <linux/kernel_stat.h>
#include <asm/sgialib.h>

void indy_8254timer_irq(void)
{
        int cpu = smp_processor_id();
        int irq = 4;

        irq_enter(cpu);
        kstat.irqs[0][irq]++;
        printk("indy_8254timer_irq: Whoops, should not have gotten this IRQ\n");
        prom_getchar();
        prom_imode();
        irq_exit(cpu);
}