1// SPDX-License-Identifier: GPL-2.0
2#include <linux/init.h>
3#include <linux/kernel_stat.h>
4#include <linux/proc_fs.h>
5#include <linux/seq_file.h>
6#include "internal.h"
7
8/*
9 * /proc/softirqs ... display the number of softirqs
10 */
11static int show_softirqs(struct seq_file *p, void *v)
12{
13 int i, j;
14
15 seq_puts(m: p, s: " ");
16 for_each_possible_cpu(i)
17 seq_printf(m: p, fmt: "CPU%-8d", i);
18 seq_putc(m: p, c: '\n');
19
20 for (i = 0; i < NR_SOFTIRQS; i++) {
21 seq_printf(m: p, fmt: "%12s:", softirq_to_name[i]);
22 for_each_possible_cpu(j)
23 seq_put_decimal_ull_width(m: p, delimiter: " ", num: kstat_softirqs_cpu(irq: i, cpu: j), width: 10);
24 seq_putc(m: p, c: '\n');
25 }
26 return 0;
27}
28
29static int __init proc_softirqs_init(void)
30{
31 struct proc_dir_entry *pde;
32
33 pde = proc_create_single("softirqs", 0, NULL, show_softirqs);
34 pde_make_permanent(pde);
35 return 0;
36}
37fs_initcall(proc_softirqs_init);
38

source code of linux/fs/proc/softirqs.c