#include <linux/fs.h>
  #include <linux/init.h>
  #include <linux/proc_fs.h>
  #include <linux/seq_file.h>
  
  static int cmdline_proc_show(struct seq_file *m, void *v)
  {
  	seq_printf(m, "%s
  ", saved_command_line);
  	return 0;
  }
  
  static int cmdline_proc_open(struct inode *inode, struct file *file)
  {
  	return single_open(file, cmdline_proc_show, NULL);
  }
  
  static const struct file_operations cmdline_proc_fops = {
  	.open		= cmdline_proc_open,
  	.read		= seq_read,
  	.llseek		= seq_lseek,
  	.release	= single_release,
  };
  
  static int __init proc_cmdline_init(void)
  {
  	proc_create("cmdline", 0, NULL, &cmdline_proc_fops);
  	return 0;
  }
  module_init(proc_cmdline_init);