px_cb_intr_redist
intr_dist_add(px_cb_intr_redist, cb_p);
intr_dist_rem(px_cb_intr_redist, cb_p);
intr_dist_add(px_cb_intr_redist, px_p);
intr_dist_rem(px_cb_intr_redist, DIP_TO_STATE(f_p->px_fh_dip));