1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun #include <linux/init.h>
3*4882a593Smuzhiyun #include <linux/kernel_stat.h>
4*4882a593Smuzhiyun #include <linux/proc_fs.h>
5*4882a593Smuzhiyun #include <linux/seq_file.h>
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun /*
8*4882a593Smuzhiyun * /proc/softirqs ... display the number of softirqs
9*4882a593Smuzhiyun */
show_softirqs(struct seq_file * p,void * v)10*4882a593Smuzhiyun static int show_softirqs(struct seq_file *p, void *v)
11*4882a593Smuzhiyun {
12*4882a593Smuzhiyun int i, j;
13*4882a593Smuzhiyun
14*4882a593Smuzhiyun seq_puts(p, " ");
15*4882a593Smuzhiyun for_each_possible_cpu(i)
16*4882a593Smuzhiyun seq_printf(p, "CPU%-8d", i);
17*4882a593Smuzhiyun seq_putc(p, '\n');
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun for (i = 0; i < NR_SOFTIRQS; i++) {
20*4882a593Smuzhiyun seq_printf(p, "%12s:", softirq_to_name[i]);
21*4882a593Smuzhiyun for_each_possible_cpu(j)
22*4882a593Smuzhiyun seq_printf(p, " %10u", kstat_softirqs_cpu(i, j));
23*4882a593Smuzhiyun seq_putc(p, '\n');
24*4882a593Smuzhiyun }
25*4882a593Smuzhiyun return 0;
26*4882a593Smuzhiyun }
27*4882a593Smuzhiyun
proc_softirqs_init(void)28*4882a593Smuzhiyun static int __init proc_softirqs_init(void)
29*4882a593Smuzhiyun {
30*4882a593Smuzhiyun proc_create_single("softirqs", 0, NULL, show_softirqs);
31*4882a593Smuzhiyun return 0;
32*4882a593Smuzhiyun }
33*4882a593Smuzhiyun fs_initcall(proc_softirqs_init);
34