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 */
12 static void *int_seq_start(struct seq_file *f, loff_t *pos)
13 {
14 return (*pos <= nr_irqs) ? pos : NULL;
15 }
16
17 static 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
25 static void int_seq_stop(struct seq_file *f, void *v)
26 {
27 /* Nothing to do */
28 }
29
30 static 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
37 static int __init proc_interrupts_init(void)
38 {
39 proc_create_seq("interrupts", 0, NULL, &int_seq_ops);
40 return 0;
41 }
42 fs_initcall(proc_interrupts_init);
43
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