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/* May be overridden by platform code */ 20int __weak nmi_enable(void) 21{ 22 return -ENOSYS; 23} 24 25void __weak nmi_disable(void) 26{ 27 28} 29 30#ifdef CONFIG_PROC_FS 31int show_interrupts(struct seq_file *p, void *v) 32{ 33 int i = *(loff_t *)v, cpu; 34 struct irqaction *action; 35 unsigned long flags; 36 37 if (i == 0) { 38 seq_puts(p, " "); 39 for_each_online_cpu(cpu) 40 seq_printf(p, "CPU%d ", cpu); 41 seq_putc(p, '\n'); 42 } 43 44 if (i < NR_IRQS) { 45 raw_spin_lock_irqsave(&irq_desc[i].lock, flags); 46 action = irq_desc[i].action; 47 if (!action) 48 goto unlock; 49 50 seq_printf(p, "%3d: ", i); 51 for_each_online_cpu(cpu) 52 seq_printf(p, "%10u ", kstat_irqs_cpu(i, cpu)); 53 seq_printf(p, " %8s", irq_desc[i].chip->name ? : "-"); 54 seq_printf(p, " %s", action->name); 55 for (action = action->next; action; action = action->next) 56 seq_printf(p, ", %s", action->name); 57 58 seq_putc(p, '\n'); 59 unlock: 60 raw_spin_unlock_irqrestore(&irq_desc[i].lock, flags); 61 } 62 63 return 0; 64} 65#endif 66