1#include <linux/fs.h>
2#include <linux/init.h>
3#include <linux/interrupt.h>
4#include <linux/irqnr.h>
5#include <linux/proc_fs.h>
6#include <linux/seq_file.h>
7
8/*
9 * /proc/interrupts
10 */
11static void *int_seq_start(struct seq_file *f, loff_t *pos)
12{
13	return (*pos <= nr_irqs) ? pos : NULL;
14}
15
16static void *int_seq_next(struct seq_file *f, void *v, loff_t *pos)
17{
18	(*pos)++;
19	if (*pos > nr_irqs)
20		return NULL;
21	return pos;
22}
23
24static void int_seq_stop(struct seq_file *f, void *v)
25{
26	/* Nothing to do */
27}
28
29static const struct seq_operations int_seq_ops = {
30	.start = int_seq_start,
31	.next  = int_seq_next,
32	.stop  = int_seq_stop,
33	.show  = show_interrupts
34};
35
36static int interrupts_open(struct inode *inode, struct file *filp)
37{
38	return seq_open(filp, &int_seq_ops);
39}
40
41static const struct file_operations proc_interrupts_operations = {
42	.open		= interrupts_open,
43	.read		= seq_read,
44	.llseek		= seq_lseek,
45	.release	= seq_release,
46};
47
48static int __init proc_interrupts_init(void)
49{
50	proc_create("interrupts", 0, NULL, &proc_interrupts_operations);
51	return 0;
52}
53module_init(proc_interrupts_init);
54