#include <linux/fs.h>
  #include <linux/init.h>
  #include <linux/pid_namespace.h>
  #include <linux/proc_fs.h>
  #include <linux/sched.h>
  #include <linux/seq_file.h>
  #include <linux/seqlock.h>
  #include <linux/time.h>
  
  #define LOAD_INT(x) ((x) >> FSHIFT)
  #define LOAD_FRAC(x) LOAD_INT(((x) & (FIXED_1-1)) * 100)
  
  static int loadavg_proc_show(struct seq_file *m, void *v)
  {

  	unsigned long avnrun[3];

  	get_avenrun(avnrun, FIXED_1/200, 0);

  	seq_printf(m, "%lu.%02lu %lu.%02lu %lu.%02lu %ld/%d %d
  ",
  		LOAD_INT(avnrun[0]), LOAD_FRAC(avnrun[0]),
  		LOAD_INT(avnrun[1]), LOAD_FRAC(avnrun[1]),
  		LOAD_INT(avnrun[2]), LOAD_FRAC(avnrun[2]),

  		nr_running(), nr_threads,
  		task_active_pid_ns(current)->last_pid);
  	return 0;
  }
  
  static int loadavg_proc_open(struct inode *inode, struct file *file)
  {
  	return single_open(file, loadavg_proc_show, NULL);
  }
  
  static const struct file_operations loadavg_proc_fops = {
  	.open		= loadavg_proc_open,
  	.read		= seq_read,
  	.llseek		= seq_lseek,
  	.release	= single_release,
  };
  
  static int __init proc_loadavg_init(void)
  {
  	proc_create("loadavg", 0, NULL, &loadavg_proc_fops);
  	return 0;
  }
  module_init(proc_loadavg_init);