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authorLinus Torvalds <torvalds@linux-foundation.org>2008-10-23 15:04:37 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-23 15:04:37 -0400
commit88ed86fee6651033de9b7038dac7869a9f19775a (patch)
tree38b638d2e7cba110ec271275738f221feb7e0a37 /fs/proc/uptime.c
parent3856d30ded1fe43c6657927ebad402d25cd128f4 (diff)
parent59c7572e82d69483a66eaa67b46548baeb69ecf4 (diff)
Merge branch 'proc' of git://git.kernel.org/pub/scm/linux/kernel/git/adobriyan/proc
* 'proc' of git://git.kernel.org/pub/scm/linux/kernel/git/adobriyan/proc: (35 commits) proc: remove fs/proc/proc_misc.c proc: move /proc/vmcore creation to fs/proc/vmcore.c proc: move pagecount stuff to fs/proc/page.c proc: move all /proc/kcore stuff to fs/proc/kcore.c proc: move /proc/schedstat boilerplate to kernel/sched_stats.h proc: move /proc/modules boilerplate to kernel/module.c proc: move /proc/diskstats boilerplate to block/genhd.c proc: move /proc/zoneinfo boilerplate to mm/vmstat.c proc: move /proc/vmstat boilerplate to mm/vmstat.c proc: move /proc/pagetypeinfo boilerplate to mm/vmstat.c proc: move /proc/buddyinfo boilerplate to mm/vmstat.c proc: move /proc/vmallocinfo to mm/vmalloc.c proc: move /proc/slabinfo boilerplate to mm/slub.c, mm/slab.c proc: move /proc/slab_allocators boilerplate to mm/slab.c proc: move /proc/interrupts boilerplate code to fs/proc/interrupts.c proc: move /proc/stat to fs/proc/stat.c proc: move rest of /proc/partitions code to block/genhd.c proc: move /proc/cpuinfo code to fs/proc/cpuinfo.c proc: move /proc/devices code to fs/proc/devices.c proc: move rest of /proc/locks to fs/locks.c ...
Diffstat (limited to 'fs/proc/uptime.c')
-rw-r--r--fs/proc/uptime.c43
1 files changed, 43 insertions, 0 deletions
diff --git a/fs/proc/uptime.c b/fs/proc/uptime.c
new file mode 100644
index 000000000000..0c10a0b3f146
--- /dev/null
+++ b/fs/proc/uptime.c
@@ -0,0 +1,43 @@
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
9static 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
26static int uptime_proc_open(struct inode *inode, struct file *file)
27{
28 return single_open(file, uptime_proc_show, NULL);
29}
30
31static 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
38static int __init proc_uptime_init(void)
39{
40 proc_create("uptime", 0, NULL, &uptime_proc_fops);
41 return 0;
42}
43module_init(proc_uptime_init);