group_add
err = group_add(&pg->cmt_cpus_actv, cp, GRP_NORESIZE);
err = group_add(pg->cmt_siblings, pg, GRP_NORESIZE);
err = group_add(&cmt_root->cl_pgs, pg,
r = group_add(pg->cmt_siblings, child,
r = group_add(&cmt_root->cl_pgs,
r = group_add(parent->cmt_siblings, pg, GRP_NORESIZE);
r = group_add(&cmt_root->cl_pgs, pg, GRP_NORESIZE);
r = group_add(parent->cmt_children, parent, GRP_NORESIZE);
err = group_add(&pg->pg_cpus, cp, GRP_RESIZE);
err = group_add(&cpu_pg->pgs, pg, GRP_RESIZE);
(void) group_add(hwset, pg, GRP_RESIZE);
int group_add(group_t *, void *, int);