sbdp_select_top_nodes
sbdp_walk_prom_tree(prom_rootnode(), sbdp_select_top_nodes,
b.create.prom_branch_select = sbdp_select_top_nodes;
sbdp_walk_prom_tree(prom_rootnode(), sbdp_select_top_nodes,
int sbdp_select_top_nodes(pnode_t, void *, uint_t);