1/* 2 * Copyright (C) 2004-2006 Atmel Corporation 3 * 4 * Based on arch/i386/kernel/irq.c 5 * Copyright (C) 1992, 1998 Linus Torvalds, Ingo Molnar 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 */ 11 12#include <linux/interrupt.h> 13#include <linux/irq.h> 14#include <linux/kernel_stat.h> 15#include <linux/proc_fs.h> 16#include <linux/seq_file.h> 17#include <linux/sysdev.h> 18 19/* 20 * 'what should we do if we get a hw irq event on an illegal vector'. 21 * each architecture has to answer this themselves. 22 */ 23void ack_bad_irq(unsigned int irq) 24{ 25 printk("unexpected IRQ %u\n", irq); 26} 27 28#ifdef CONFIG_PROC_FS 29int show_interrupts(struct seq_file *p, void *v) 30{ 31 int i = *(loff_t *)v, cpu; 32 struct irqaction *action; 33 unsigned long flags; 34 35 if (i == 0) { 36 seq_puts(p, " "); 37 for_each_online_cpu(cpu) 38 seq_printf(p, "CPU%d ", cpu); 39 seq_putc(p, '\n'); 40 } 41 42 if (i < NR_IRQS) { 43 spin_lock_irqsave(&irq_desc[i].lock, flags); 44 action = irq_desc[i].action; 45 if (!action) 46 goto unlock; 47 48 seq_printf(p, "%3d: ", i); 49 for_each_online_cpu(cpu) 50 seq_printf(p, "%10u ", kstat_cpu(cpu).irqs[i]); 51 seq_printf(p, " %8s", irq_desc[i].chip->name ? : "-"); 52 seq_printf(p, " %s", action->name); 53 for (action = action->next; action; action = action->next) 54 seq_printf(p, ", %s", action->name); 55 56 seq_putc(p, '\n'); 57 unlock: 58 spin_unlock_irqrestore(&irq_desc[i].lock, flags); 59 } 60 61 return 0; 62} 63#endif 64