mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-11-01 08:58:07 +00:00
612ef28a04
Conflicts: drivers/cpufreq/cpufreq_conservative.c drivers/cpufreq/cpufreq_ondemand.c drivers/macintosh/rack-meter.c fs/proc/stat.c fs/proc/uptime.c kernel/sched/core.c
53 lines
1.3 KiB
C
53 lines
1.3 KiB
C
#include <linux/fs.h>
|
|
#include <linux/init.h>
|
|
#include <linux/proc_fs.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/seq_file.h>
|
|
#include <linux/time.h>
|
|
#include <linux/kernel_stat.h>
|
|
#include <asm/cputime.h>
|
|
|
|
static int uptime_proc_show(struct seq_file *m, void *v)
|
|
{
|
|
struct timespec uptime;
|
|
struct timespec idle;
|
|
u64 idletime;
|
|
u64 nsec;
|
|
u32 rem;
|
|
int i;
|
|
|
|
idletime = 0;
|
|
for_each_possible_cpu(i)
|
|
idletime += (__force u64) kcpustat_cpu(i).cpustat[CPUTIME_IDLE];
|
|
|
|
do_posix_clock_monotonic_gettime(&uptime);
|
|
monotonic_to_bootbased(&uptime);
|
|
nsec = cputime64_to_jiffies64(idletime) * TICK_NSEC;
|
|
idle.tv_sec = div_u64_rem(nsec, NSEC_PER_SEC, &rem);
|
|
idle.tv_nsec = rem;
|
|
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);
|