linux/fs/proc/softirqs.c
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   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 */
  10static 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
  28static int __init proc_softirqs_init(void)
  29{
  30        proc_create_single("softirqs", 0, NULL, show_softirqs);
  31        return 0;
  32}
  33fs_initcall(proc_softirqs_init);
  34