PRI_REALTIME
if (k->ki_p->ki_nice < NZERO || k->ki_p->ki_pri.pri_class == PRI_REALTIME)
case PRI_REALTIME:
#define PRI_FIFO (PRI_FIFO_BIT | PRI_REALTIME)
#define PRI_IS_REALTIME(P) (PRI_BASE(P) == PRI_REALTIME)
#define RTP_PRIO_REALTIME PRI_REALTIME /* real time process */
case PRI_REALTIME: