PUSER
if (p->p_usrpri > PUSER)
p->p_usrpri = PUSER;
if (p->p_usrpri > PUSER)
p->p_usrpri = PUSER;
if (p->p_usrpri > PUSER)
p->p_usrpri = PUSER;
newprio = min((PUSER + newcpu + NICE_WEIGHT * (nice - NZERO)), MAXPRI);