stats_timestamps
ktime_get_real_ts64(&stats->stats_timestamps.last_reset_time);
struct stats_timestamps stats_timestamps;
val1 = timespec64_sub(val, stats->stats_timestamps.last_reset_time);
val2 = timespec64_sub(val, stats->stats_timestamps.last_read_time);
&stats->stats_timestamps.last_reset_time,
&stats->stats_timestamps.last_read_time,
stats->stats_timestamps.last_read_time = val;