LXR linux/fs/proc/interrupts.c

   1// SPDX-License-Identifier: GPL-2.0
   2#include <linux/fs.h>
   3#include <linux/init.h>
   4#include <linux/interrupt.h>
   5#include <linux/irqnr.h>
   6#include <linux/proc_fs.h>
   7#include <linux/seq_file.h>
   8
   9/*
  10 * /proc/interrupts
  11 */
  12static void *int_seq_start(struct seq_file *f, loff_t *pos)
  13{
  14        return (*pos <= nr_irqs) ? pos : NULL;
  15}
  16
  17static void *int_seq_next(struct seq_file *f, void *v, loff_t *pos)
  18{
  19        (*pos)++;
  20        if (*pos > nr_irqs)
  21                return NULL;
  22        return pos;
  23}
  24
  25static void int_seq_stop(struct seq_file *f, void *v)
  26{
  27        /* Nothing to do */
  28}
  29
  30static const struct seq_operations int_seq_ops = {
  31        .start = int_seq_start,
  32        .next  = int_seq_next,
  33        .stop  = int_seq_stop,
  34        .show  = show_interrupts
  35};
  36
  37static int __init proc_interrupts_init(void)
  38{
  39        proc_create_seq("interrupts", 0, NULL, &int_seq_ops);
  40        return 0;
  41}
  42fs_initcall(proc_interrupts_init);
  43