Merge branch 'fix/hda' into for-linus
[pandora-kernel.git] / arch / avr32 / kernel / irq.c
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 */
20 int __weak nmi_enable(void)
21 {
22         return -ENOSYS;
23 }
24
25 void __weak nmi_disable(void)
26 {
27
28 }
29
30 #ifdef CONFIG_PROC_FS
31 int 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