1#include <linux/fs.h> 2#include <linux/init.h> 3#include <linux/pid_namespace.h> 4#include <linux/proc_fs.h> 5#include <linux/sched.h> 6#include <linux/seq_file.h> 7#include <linux/seqlock.h> 8#include <linux/time.h> 9 10#define LOAD_INT(x) ((x) >> FSHIFT) 11#define LOAD_FRAC(x) LOAD_INT(((x) & (FIXED_1-1)) * 100) 12 13static int loadavg_proc_show(struct seq_file *m, void *v) 14{ 15 unsigned long avnrun[3]; 16 17 get_avenrun(avnrun, FIXED_1/200, 0); 18 19 seq_printf(m, "%lu.%02lu %lu.%02lu %lu.%02lu %ld/%d %d\n", 20 LOAD_INT(avnrun[0]), LOAD_FRAC(avnrun[0]), 21 LOAD_INT(avnrun[1]), LOAD_FRAC(avnrun[1]), 22 LOAD_INT(avnrun[2]), LOAD_FRAC(avnrun[2]), 23 nr_running(), nr_threads, 24 task_active_pid_ns(current)->last_pid); 25 return 0; 26} 27 28static int loadavg_proc_open(struct inode *inode, struct file *file) 29{ 30 return single_open(file, loadavg_proc_show, NULL); 31} 32 33static const struct file_operations loadavg_proc_fops = { 34 .open = loadavg_proc_open, 35 .read = seq_read, 36 .llseek = seq_lseek, 37 .release = single_release, 38}; 39 40static int __init proc_loadavg_init(void) 41{ 42 proc_create("loadavg", 0, NULL, &loadavg_proc_fops); 43 return 0; 44} 45module_init(proc_loadavg_init); 46