Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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 interrupts_open(struct inode *inode, struct file *filp)
38{
39 return seq_open(filp, &int_seq_ops);
40}
41
42static const struct file_operations proc_interrupts_operations = {
43 .open = interrupts_open,
44 .read = seq_read,
45 .llseek = seq_lseek,
46 .release = seq_release,
47};
48
49static int __init proc_interrupts_init(void)
50{
51 proc_create("interrupts", 0, NULL, &proc_interrupts_operations);
52 return 0;
53}
54fs_initcall(proc_interrupts_init);