gru_alloc_gts
bs->bs_kgts = gru_alloc_gts(NULL, 0, 0, 0, 0, 0);
gts = gru_alloc_gts(vma, vdata->vd_cbr_au_count,
extern struct gru_thread_state *gru_alloc_gts(struct vm_area_struct *vma,