#include <linux/fs.h>
  #include <linux/init.h>
  #include <linux/interrupt.h>
  #include <linux/irqnr.h>
  #include <linux/proc_fs.h>
  #include <linux/seq_file.h>
  
  /*
   * /proc/interrupts
   */
  static void *int_seq_start(struct seq_file *f, loff_t *pos)
  {
  	return (*pos <= nr_irqs) ? pos : NULL;
  }
  
  static void *int_seq_next(struct seq_file *f, void *v, loff_t *pos)
  {
  	(*pos)++;
  	if (*pos > nr_irqs)
  		return NULL;
  	return pos;
  }
  
  static void int_seq_stop(struct seq_file *f, void *v)
  {
  	/* Nothing to do */
  }
  
  static const struct seq_operations int_seq_ops = {
  	.start = int_seq_start,
  	.next  = int_seq_next,
  	.stop  = int_seq_stop,
  	.show  = show_interrupts
  };
  
  static int interrupts_open(struct inode *inode, struct file *filp)
  {
  	return seq_open(filp, &int_seq_ops);
  }
  
  static const struct file_operations proc_interrupts_operations = {
  	.open		= interrupts_open,
  	.read		= seq_read,
  	.llseek		= seq_lseek,
  	.release	= seq_release,
  };
  
  static int __init proc_interrupts_init(void)
  {
  	proc_create("interrupts", 0, NULL, &proc_interrupts_operations);
  	return 0;
  }
  module_init(proc_interrupts_init);