#include #include #include #include #include #include #include #include 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]; get_monotonic_boottime(&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; } fs_initcall(proc_uptime_init); -back'>packet-rx-pump-back net-next plumbingsTobias Klauser
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