| // SPDX-License-Identifier: GPL-2.0 |
| #include <linux/proc_fs.h> |
| #include <linux/seq_file.h> |
| #include <linux/time_namespace.h> |
| #include <linux/kernel_stat.h> |
| static int uptime_proc_show(struct seq_file *m, void *v) |
| struct timespec64 uptime; |
| nsec += (__force u64) kcpustat_cpu(i).cpustat[CPUTIME_IDLE]; |
| ktime_get_boottime_ts64(&uptime); |
| timens_add_boottime(&uptime); |
| idle.tv_sec = div_u64_rem(nsec, NSEC_PER_SEC, &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))); |
| static int __init proc_uptime_init(void) |
| proc_create_single("uptime", 0, NULL, uptime_proc_show); |
| fs_initcall(proc_uptime_init); |