From 9617760287eec9091d26e6967bd3e4194de18f97 Mon Sep 17 00:00:00 2001 From: Alexey Dobriyan Date: Fri, 3 Oct 2008 02:38:18 +0400 Subject: proc: switch /proc/uptime to seq_file and move it to fs/proc/uptime.c while I'm at it. Signed-off-by: Alexey Dobriyan --- fs/proc/uptime.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 fs/proc/uptime.c (limited to 'fs/proc/uptime.c') 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 @@ +#include +#include +#include +#include +#include +#include +#include + +static int uptime_proc_show(struct seq_file *m, void *v) +{ + struct timespec uptime; + struct timespec idle; + cputime_t idletime = cputime_add(init_task.utime, init_task.stime); + + do_posix_clock_monotonic_gettime(&uptime); + monotonic_to_bootbased(&uptime); + cputime_to_timespec(idletime, &idle); + seq_printf(m, "%lu.%02lu %lu.%02lu\n", + (unsigned long) uptime.tv_sec, + (uptime.tv_nsec / (NSEC_PER_SEC / 100)), + (unsigned long) idle.tv_sec, + (idle.tv_nsec / (NSEC_PER_SEC / 100))); + return 0; +} + +static int uptime_proc_open(struct inode *inode, struct file *file) +{ + return single_open(file, uptime_proc_show, NULL); +} + +static const struct file_operations uptime_proc_fops = { + .open = uptime_proc_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static int __init proc_uptime_init(void) +{ + proc_create("uptime", 0, NULL, &uptime_proc_fops); + return 0; +} +module_init(proc_uptime_init); -- cgit v1.2.3