diff options
| author | Tariq Toukan <tariqt@mellanox.com> | 2018-04-04 12:54:23 +0300 |
|---|---|---|
| committer | Saeed Mahameed <saeedm@mellanox.com> | 2018-05-26 00:11:00 +0300 |
| commit | 3a2f70331226c140e5aa27ee6bbe2a5c618acb4c (patch) | |
| tree | 46ae6213a04598f4a8df06ef920bf88d31207615 /include/linux | |
| parent | 549322f2f988b2ced90656727c0b4850e4b49fc6 (diff) | |
| download | linux-3a2f70331226c140e5aa27ee6bbe2a5c618acb4c.tar.xz | |
net/mlx5: Use order-0 allocations for all WQ types
Complete the transition of all WQ types to use fragmented
order-0 coherent memory instead of high-order allocations.
CQ-WQ already uses order-0.
Here we do the same for cyclic and linked-list WQs.
This allows the driver to load cleanly on systems with a highly
fragmented coherent memory.
Performance tests:
ConnectX-5 100Gbps, CPU: Intel(R) Xeon(R) CPU E5-2680 v3 @ 2.50GHz
Packet rate of 64B packets, single transmit ring, size 8K.
No degradation is sensed.
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/mlx5/driver.h | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h index 92d292454351..80cbb7fdce4a 100644 --- a/include/linux/mlx5/driver.h +++ b/include/linux/mlx5/driver.h @@ -983,16 +983,24 @@ static inline u32 mlx5_base_mkey(const u32 key) return key & 0xffffff00u; } -static inline void mlx5_core_init_cq_frag_buf(struct mlx5_frag_buf_ctrl *fbc, - void *cqc) +static inline void mlx5_fill_fbc(u8 log_stride, u8 log_sz, + struct mlx5_frag_buf_ctrl *fbc) { - fbc->log_stride = 6 + MLX5_GET(cqc, cqc, cqe_sz); - fbc->log_sz = MLX5_GET(cqc, cqc, log_cq_size); + fbc->log_stride = log_stride; + fbc->log_sz = log_sz; fbc->sz_m1 = (1 << fbc->log_sz) - 1; fbc->log_frag_strides = PAGE_SHIFT - fbc->log_stride; fbc->frag_sz_m1 = (1 << fbc->log_frag_strides) - 1; } +static inline void mlx5_core_init_cq_frag_buf(struct mlx5_frag_buf_ctrl *fbc, + void *cqc) +{ + mlx5_fill_fbc(6 + MLX5_GET(cqc, cqc, cqe_sz), + MLX5_GET(cqc, cqc, log_cq_size), + fbc); +} + static inline void *mlx5_frag_buf_get_wqe(struct mlx5_frag_buf_ctrl *fbc, u32 ix) { |