ttm_kmap_iter_tt_init
ttm_kmap_iter_tt_init(&arg->_dst_iter.tt, dst_ttm) :
ttm_kmap_iter_tt_init(&arg->_src_iter.tt, bo->ttm) :
struct ttm_kmap_iter *ttm_kmap_iter_tt_init(struct ttm_kmap_iter_tt *iter_tt,
dst_iter = ttm_kmap_iter_tt_init(&_dst_iter.tt, bo->ttm);
src_iter = ttm_kmap_iter_tt_init(&_src_iter.tt, bo->ttm);
EXPORT_SYMBOL(ttm_kmap_iter_tt_init);