1// SPDX-License-Identifier: GPL-2.0
2#include <linux/fs.h>
3#include <linux/init.h>
4#include <linux/interrupt.h>
5#include <linux/irqnr.h>
6#include <linux/proc_fs.h>
7#include <linux/seq_file.h>
8
9/*
10 * /proc/interrupts
11 */
12static void *int_seq_start(struct seq_file *f, loff_t *pos)
13{
14	return (*pos <= nr_irqs) ? pos : NULL;
15}
16
17static void *int_seq_next(struct seq_file *f, void *v, loff_t *pos)
18{
19	(*pos)++;
20	if (*pos > nr_irqs)
21		return NULL;
22	return pos;
23}
24
25static void int_seq_stop(struct seq_file *f, void *v)
26{
27	/* Nothing to do */
28}
29
30static const struct seq_operations int_seq_ops = {
31	.start = int_seq_start,
32	.next  = int_seq_next,
33	.stop  = int_seq_stop,
34	.show  = show_interrupts
35};
36
37static int __init proc_interrupts_init(void)
38{
39	proc_create_seq("interrupts", 0, NULL, &int_seq_ops);
40	return 0;
41}
42fs_initcall(proc_interrupts_init);
43