Symbol: KTRH_THREADED
sys/kern/kern_ktrace.c
80
kth->ktr_flags = (p->p_nthreads > 1) ? KTRH_THREADED : 0;
usr.bin/kdump/kdump.c
248
if (kth->ktr_tid || (kth->ktr_flags & KTRH_THREADED) || fixedformat)