mk_reply
stats = mk_reply(rep_skb, TASKSTATS_TYPE_PID, pid);
stats = mk_reply(rep_skb, TASKSTATS_TYPE_TGID, tgid);
stats = mk_reply(rep_skb, TASKSTATS_TYPE_PID,
stats = mk_reply(rep_skb, TASKSTATS_TYPE_TGID,