link_trace
struct link_trace link_trace;
link->link_trace.time_stamp.edp_poweroff), 1000000);
if (link->link_trace.time_stamp.edp_poweroff == 0)
link->link_trace.time_stamp.edp_poweroff = dm_get_timestamp(ctx);
link->link_trace.time_stamp.edp_poweron = dm_get_timestamp(ctx);