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 7 /* 8 * /proc/softirqs ... display the number of softirqs 9 */ 10 static int show_softirqs(struct seq_file *p, void *v) 11 { 12 int i, j; 13 14 seq_puts(p, " "); 15 for_each_possible_cpu(i) 16 seq_printf(p, "CPU%-8d", i); 17 seq_putc(p, '\n'); 18 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)); 23 seq_putc(p, '\n'); 24 } 25 return 0; 26 } 27 28 static int __init proc_softirqs_init(void) 29 { 30 proc_create_single("softirqs", 0, NULL, show_softirqs); 31 return 0; 32 } 33 fs_initcall(proc_softirqs_init); 34