diff options
| author | Guy Levi <guyle@mellanox.com> | 2017-11-02 15:22:25 +0200 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2017-11-13 14:42:04 -0500 |
| commit | ed8637d3615b38bd4d12ba5eb8ee6a0c3888e754 (patch) | |
| tree | aba1750f891b8979c86e506c77977744ab0a4979 | |
| parent | 9901abf583683e58f95f822da63cd0e32e7b2f0a (diff) | |
IB/mlx4: Add contig support for control objects
Taking advantage of the optimization which was introduced in previous
commit ("IB/mlx4: Use optimal numbers of MTT entries") to optimize the
MTT usage for QP and CQ.
Signed-off-by: Guy Levi <guyle@mellanox.com>
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
| -rw-r--r-- | drivers/infiniband/hw/mlx4/cq.c | 8 | ||||
| -rw-r--r-- | drivers/infiniband/hw/mlx4/mlx4_ib.h | 2 | ||||
| -rw-r--r-- | drivers/infiniband/hw/mlx4/mr.c | 5 | ||||
| -rw-r--r-- | drivers/infiniband/hw/mlx4/qp.c | 8 |
4 files changed, 16 insertions, 7 deletions
diff --git a/drivers/infiniband/hw/mlx4/cq.c b/drivers/infiniband/hw/mlx4/cq.c index 6d5f405912dd..bf4f14a1b4fc 100644 --- a/drivers/infiniband/hw/mlx4/cq.c +++ b/drivers/infiniband/hw/mlx4/cq.c @@ -140,14 +140,18 @@ static int mlx4_ib_get_cq_umem(struct mlx4_ib_dev *dev, struct ib_ucontext *cont { int err; int cqe_size = dev->dev->caps.cqe_size; + int shift; + int n; *umem = ib_umem_get(context, buf_addr, cqe * cqe_size, IB_ACCESS_LOCAL_WRITE, 1); if (IS_ERR(*umem)) return PTR_ERR(*umem); - err = mlx4_mtt_init(dev->dev, ib_umem_page_count(*umem), - (*umem)->page_shift, &buf->mtt); + n = ib_umem_page_count(*umem); + shift = mlx4_ib_umem_calc_optimal_mtt_size(*umem, 0, &n); + err = mlx4_mtt_init(dev->dev, n, shift, &buf->mtt); + if (err) goto err_buf; diff --git a/drivers/infiniband/hw/mlx4/mlx4_ib.h b/drivers/infiniband/hw/mlx4/mlx4_ib.h index d09d4e7b2706..719dae354066 100644 --- a/drivers/infiniband/hw/mlx4/mlx4_ib.h +++ b/drivers/infiniband/hw/mlx4/mlx4_ib.h @@ -935,5 +935,7 @@ struct ib_rwq_ind_table struct ib_rwq_ind_table_init_attr *init_attr, struct ib_udata *udata); int mlx4_ib_destroy_rwq_ind_table(struct ib_rwq_ind_table *wq_ind_table); +int mlx4_ib_umem_calc_optimal_mtt_size(struct ib_umem *umem, u64 start_va, + int *num_of_mtts); #endif /* MLX4_IB_H */ diff --git a/drivers/infiniband/hw/mlx4/mr.c b/drivers/infiniband/hw/mlx4/mr.c index 8f408a02f699..313bfb9ccb71 100644 --- a/drivers/infiniband/hw/mlx4/mr.c +++ b/drivers/infiniband/hw/mlx4/mr.c @@ -254,9 +254,8 @@ out: * middle already handled as part of mtt shift calculation for both their start * & end addresses. */ -static int mlx4_ib_umem_calc_optimal_mtt_size(struct ib_umem *umem, - u64 start_va, - int *num_of_mtts) +int mlx4_ib_umem_calc_optimal_mtt_size(struct ib_umem *umem, u64 start_va, + int *num_of_mtts) { u64 block_shift = MLX4_MAX_MTT_SHIFT; u64 min_shift = umem->page_shift; diff --git a/drivers/infiniband/hw/mlx4/qp.c b/drivers/infiniband/hw/mlx4/qp.c index 26f3345948e2..f807a6278d44 100644 --- a/drivers/infiniband/hw/mlx4/qp.c +++ b/drivers/infiniband/hw/mlx4/qp.c @@ -1038,6 +1038,8 @@ static int create_qp_common(struct mlx4_ib_dev *dev, struct ib_pd *pd, struct mlx4_ib_create_wq wq; } ucmd; size_t copy_len; + int shift; + int n; copy_len = (src == MLX4_IB_QP_SRC) ? sizeof(struct mlx4_ib_create_qp) : @@ -1100,8 +1102,10 @@ static int create_qp_common(struct mlx4_ib_dev *dev, struct ib_pd *pd, goto err; } - err = mlx4_mtt_init(dev->dev, ib_umem_page_count(qp->umem), - qp->umem->page_shift, &qp->mtt); + n = ib_umem_page_count(qp->umem); + shift = mlx4_ib_umem_calc_optimal_mtt_size(qp->umem, 0, &n); + err = mlx4_mtt_init(dev->dev, n, shift, &qp->mtt); + if (err) goto err_buf; |