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>
8 * /proc/softirqs ... display the number of softirqs
10 static int show_softirqs(struct seq_file *p, void *v)
15 for_each_possible_cpu(i)
16 seq_printf(p, "CPU%-8d", i);
19 for (i = 0; i < NR_SOFTIRQS; i++) {
20 seq_printf(p, "%12s:", softirq_to_name[i]);
21 for_each_possible_cpu(j)
22 seq_printf(p, " %10u", kstat_softirqs_cpu(i, j));
28 static int softirqs_open(struct inode *inode, struct file *file)
30 return single_open(file, show_softirqs, NULL);
33 static const struct file_operations proc_softirqs_operations = {
34 .open = softirqs_open,
37 .release = single_release,
40 static int __init proc_softirqs_init(void)
42 proc_create("softirqs", 0, NULL, &proc_softirqs_operations);
45 fs_initcall(proc_softirqs_init);