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| author | Leon Romanovsky <leonro@mellanox.com> | 2018-07-08 12:50:20 +0200 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2018-07-13 19:54:50 +0200 |
| commit | ffaf58def01ebdbf2669204e105c5a4f356ba276 (patch) | |
| tree | 6e56fb949a1ea4b080a9d891d37787e9bf9a2e51 | |
| parent | rdma/cxgb4: Add support for 64Byte cqes (diff) | |
| download | linux-ffaf58def01ebdbf2669204e105c5a4f356ba276.tar.xz linux-ffaf58def01ebdbf2669204e105c5a4f356ba276.zip | |
RDMA/mlx5: Melt consecutive calls to alloc_bfreg() in one call
There is no need for three consecutive calls to alloc_bfreg(). It can be
implemented with one function.
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
| -rw-r--r-- | drivers/infiniband/hw/mlx5/mlx5_ib.h | 6 | ||||
| -rw-r--r-- | drivers/infiniband/hw/mlx5/qp.c | 47 |
2 files changed, 12 insertions, 41 deletions
diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h index 67e86c8304a2..93087409f4b8 100644 --- a/drivers/infiniband/hw/mlx5/mlx5_ib.h +++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h @@ -78,12 +78,6 @@ enum { MLX5_REQ_SCAT_DATA64_CQE = 0x22, }; -enum mlx5_ib_latency_class { - MLX5_IB_LATENCY_CLASS_LOW, - MLX5_IB_LATENCY_CLASS_MEDIUM, - MLX5_IB_LATENCY_CLASS_HIGH, -}; - enum mlx5_ib_mad_ifc_flags { MLX5_MAD_IFC_IGNORE_MKEY = 1, MLX5_MAD_IFC_IGNORE_BKEY = 2, diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c index 6034a670859f..51e68ca20215 100644 --- a/drivers/infiniband/hw/mlx5/qp.c +++ b/drivers/infiniband/hw/mlx5/qp.c @@ -563,32 +563,21 @@ static int alloc_med_class_bfreg(struct mlx5_ib_dev *dev, } static int alloc_bfreg(struct mlx5_ib_dev *dev, - struct mlx5_bfreg_info *bfregi, - enum mlx5_ib_latency_class lat) + struct mlx5_bfreg_info *bfregi) { - int bfregn = -EINVAL; + int bfregn = -ENOMEM; mutex_lock(&bfregi->lock); - switch (lat) { - case MLX5_IB_LATENCY_CLASS_LOW: + if (bfregi->ver >= 2) { + bfregn = alloc_high_class_bfreg(dev, bfregi); + if (bfregn < 0) + bfregn = alloc_med_class_bfreg(dev, bfregi); + } + + if (bfregn < 0) { BUILD_BUG_ON(NUM_NON_BLUE_FLAME_BFREGS != 1); bfregn = 0; bfregi->count[bfregn]++; - break; - - case MLX5_IB_LATENCY_CLASS_MEDIUM: - if (bfregi->ver < 2) - bfregn = -ENOMEM; - else - bfregn = alloc_med_class_bfreg(dev, bfregi); - break; - - case MLX5_IB_LATENCY_CLASS_HIGH: - if (bfregi->ver < 2) - bfregn = -ENOMEM; - else - bfregn = alloc_high_class_bfreg(dev, bfregi); - break; } mutex_unlock(&bfregi->lock); @@ -822,21 +811,9 @@ static int create_user_qp(struct mlx5_ib_dev *dev, struct ib_pd *pd, bfregn = MLX5_CROSS_CHANNEL_BFREG; } else { - bfregn = alloc_bfreg(dev, &context->bfregi, MLX5_IB_LATENCY_CLASS_HIGH); - if (bfregn < 0) { - mlx5_ib_dbg(dev, "failed to allocate low latency BFREG\n"); - mlx5_ib_dbg(dev, "reverting to medium latency\n"); - bfregn = alloc_bfreg(dev, &context->bfregi, MLX5_IB_LATENCY_CLASS_MEDIUM); - if (bfregn < 0) { - mlx5_ib_dbg(dev, "failed to allocate medium latency BFREG\n"); - mlx5_ib_dbg(dev, "reverting to high latency\n"); - bfregn = alloc_bfreg(dev, &context->bfregi, MLX5_IB_LATENCY_CLASS_LOW); - if (bfregn < 0) { - mlx5_ib_warn(dev, "bfreg allocation failed\n"); - return bfregn; - } - } - } + bfregn = alloc_bfreg(dev, &context->bfregi); + if (bfregn < 0) + return bfregn; } mlx5_ib_dbg(dev, "bfregn 0x%x, uar_index 0x%x\n", bfregn, uar_index); |