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/sched/loadavg.h>
7 #include <linux/sched/stat.h>
8 #include <linux/seq_file.h>
9 #include <linux/seqlock.h>
10 #include <linux/time.h>
12 #define LOAD_INT(x) ((x) >> FSHIFT)
13 #define LOAD_FRAC(x) LOAD_INT(((x) & (FIXED_1-1)) * 100)
15 static int loadavg_proc_show(struct seq_file *m, void *v)
17 unsigned long avnrun[3];
19 get_avenrun(avnrun, FIXED_1/200, 0);
21 seq_printf(m, "%lu.%02lu %lu.%02lu %lu.%02lu %ld/%d %d\n",
22 LOAD_INT(avnrun[0]), LOAD_FRAC(avnrun[0]),
23 LOAD_INT(avnrun[1]), LOAD_FRAC(avnrun[1]),
24 LOAD_INT(avnrun[2]), LOAD_FRAC(avnrun[2]),
25 nr_running(), nr_threads,
26 task_active_pid_ns(current)->last_pid);
30 static int loadavg_proc_open(struct inode *inode, struct file *file)
32 return single_open(file, loadavg_proc_show, NULL);
35 static const struct file_operations loadavg_proc_fops = {
36 .open = loadavg_proc_open,
39 .release = single_release,
42 static int __init proc_loadavg_init(void)
44 proc_create("loadavg", 0, NULL, &loadavg_proc_fops);
47 fs_initcall(proc_loadavg_init);