[mirror_ubuntu-artful-kernel.git] / fs / proc / loadavg.c

#include <linux/fs.h>
#include <linux/init.h>
#include <linux/pid_namespace.h>
#include <linux/proc_fs.h>
#include <linux/sched.h>
#include <linux/sched/loadavg.h>
#include <linux/sched/stat.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\n",
		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;
}
fs_initcall(proc_loadavg_init);
Commit	Line	Data
5b3acc8d AD	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>
4f17722c	6	#include <linux/sched/loadavg.h>
03441a34	7	#include <linux/sched/stat.h>
5b3acc8d AD	8	#include <linux/seq_file.h>
	9	#include <linux/seqlock.h>
	10	#include <linux/time.h>
	11
	12	#define LOAD_INT(x) ((x) >> FSHIFT)
	13	#define LOAD_FRAC(x) LOAD_INT(((x) & (FIXED_1-1)) * 100)
	14
	15	static int loadavg_proc_show(struct seq_file m, void v)
	16	{
2d02494f	17	unsigned long avnrun[3];
5b3acc8d	18
2d02494f	19	get_avenrun(avnrun, FIXED_1/200, 0);
5b3acc8d	20
2d02494f TG	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]),
5b3acc8d AD	25	nr_running(), nr_threads,
	26	task_active_pid_ns(current)->last_pid);
	27	return 0;
	28	}
	29
	30	static int loadavg_proc_open(struct inode inode, struct file file)
	31	{
	32	return single_open(file, loadavg_proc_show, NULL);
	33	}
	34
	35	static const struct file_operations loadavg_proc_fops = {
	36	.open = loadavg_proc_open,
	37	.read = seq_read,
	38	.llseek = seq_lseek,
	39	.release = single_release,
	40	};
	41
	42	static int __init proc_loadavg_init(void)
	43	{
	44	proc_create("loadavg", 0, NULL, &loadavg_proc_fops);
	45	return 0;
	46	}
abaf3787	47	fs_initcall(proc_loadavg_init);