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驅動程式 - Linux Device Driver(LDD) - 如何列印時間

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void print_time(void)
{
    struct timeval t;
    struct tm broken;

    do_gettimeofday(&t);
    time_to_tm(t.tv_sec, 0, &broken);

    printk("%d:%d:%d:%ld\n",
        broken.tm_hour,
        broken.tm_min,
        broken.tm_sec,
        t.tv_usec);
}

void print_time64(void)
{
    struct timespec64 ts;
    struct tm broken;

    ktime_get_real_ts64(&ts);
    time64_to_tm(ts.tv_sec, 0, &broken);

    printk("%02d:%02d:%02d:%09lu\n",
           broken.tm_hour,
           broken.tm_min,
           broken.tm_sec,
           (unsigned long)ts.tv_nsec);
}