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  */
show_softirqs(struct seq_file * p,void * v)11 static int show_softirqs(struct seq_file *p, void *v)
12 {
13 	int i, j;
14 
15 	seq_puts(p, "                    ");
16 	for_each_possible_cpu(i)
17 		seq_printf(p, "CPU%-8d", i);
18 	seq_putc(p, '\n');
19 
20 	for (i = 0; i < NR_SOFTIRQS; i++) {
21 		seq_printf(p, "%12s:", softirq_to_name[i]);
22 		for_each_possible_cpu(j)
23 			seq_printf(p, " %10u", kstat_softirqs_cpu(i, j));
24 		seq_putc(p, '\n');
25 	}
26 	return 0;
27 }
28 
proc_softirqs_init(void)29 static 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 }
37 fs_initcall(proc_softirqs_init);
38