Merge branch 'avr32-arch' of git://git.kernel.org/pub/scm/linux/kernel/git/hskinnemoe...
[linux-2.6] / fs / proc / uptime.c
1 #include <linux/fs.h>
2 #include <linux/init.h>
3 #include <linux/proc_fs.h>
4 #include <linux/sched.h>
5 #include <linux/seq_file.h>
6 #include <linux/time.h>
7 #include <asm/cputime.h>
8
9 static int uptime_proc_show(struct seq_file *m, void *v)
10 {
11         struct timespec uptime;
12         struct timespec idle;
13         cputime_t idletime = cputime_add(init_task.utime, init_task.stime);
14
15         do_posix_clock_monotonic_gettime(&uptime);
16         monotonic_to_bootbased(&uptime);
17         cputime_to_timespec(idletime, &idle);
18         seq_printf(m, "%lu.%02lu %lu.%02lu\n",
19                         (unsigned long) uptime.tv_sec,
20                         (uptime.tv_nsec / (NSEC_PER_SEC / 100)),
21                         (unsigned long) idle.tv_sec,
22                         (idle.tv_nsec / (NSEC_PER_SEC / 100)));
23         return 0;
24 }
25
26 static int uptime_proc_open(struct inode *inode, struct file *file)
27 {
28         return single_open(file, uptime_proc_show, NULL);
29 }
30
31 static const struct file_operations uptime_proc_fops = {
32         .open           = uptime_proc_open,
33         .read           = seq_read,
34         .llseek         = seq_lseek,
35         .release        = single_release,
36 };
37
38 static int __init proc_uptime_init(void)
39 {
40         proc_create("uptime", 0, NULL, &uptime_proc_fops);
41         return 0;
42 }
43 module_init(proc_uptime_init);