rt_priocntl
if (rt_priocntl(P_ALL, 0, PC_SETXPARMS, "RT", args) == -1) {
if (rt_priocntl(idtype, P_MYID, PC_SETXPARMS, "RT",
if (rt_priocntl(idtype, id, PC_SETXPARMS, "RT",
if (rt_priocntl(P_PID, P_MYID, PC_SETXPARMS, "RT", args) == -1)
static int rt_priocntl(idtype_t, id_t, int, char *, uintptr_t *);