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| author | Eli Cohen <eli@mellanox.co.il> | 2009-05-27 14:38:34 -0700 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2009-05-27 14:38:34 -0700 |
| commit | ab6bf42e2339580b5d87746d0ff4da4b1578b03e (patch) | |
| tree | 670b1e1168e2a89ad782879154c9cdc9785b1c4c /drivers/net/mlx4/mr.c | |
| parent | 210af919c949a7d6bd330916ef376cec2907d81e (diff) | |
| download | lwn-ab6bf42e2339580b5d87746d0ff4da4b1578b03e.tar.gz lwn-ab6bf42e2339580b5d87746d0ff4da4b1578b03e.zip | |
mlx4_core: Add module parameter for number of MTTs per segment
The current MTT allocator uses kmalloc() to allocate a buffer for its
buddy allocator, and thus is limited in the amount of MTT segments
that it can control. As a result, the size of memory that can be
registered is limited too. This patch uses a module parameter to
control the number of MTT entries that each segment represents,
allowing more memory to be registered with the same number of
segments.
Signed-off-by: Eli Cohen <eli@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/net/mlx4/mr.c')
| -rw-r--r-- | drivers/net/mlx4/mr.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/net/mlx4/mr.c b/drivers/net/mlx4/mr.c index 0caf74cae8bc..3b8973d19933 100644 --- a/drivers/net/mlx4/mr.c +++ b/drivers/net/mlx4/mr.c @@ -209,7 +209,7 @@ int mlx4_mtt_init(struct mlx4_dev *dev, int npages, int page_shift, } else mtt->page_shift = page_shift; - for (mtt->order = 0, i = MLX4_MTT_ENTRY_PER_SEG; i < npages; i <<= 1) + for (mtt->order = 0, i = dev->caps.mtts_per_seg; i < npages; i <<= 1) ++mtt->order; mtt->first_seg = mlx4_alloc_mtt_range(dev, mtt->order); @@ -350,7 +350,7 @@ int mlx4_mr_enable(struct mlx4_dev *dev, struct mlx4_mr *mr) mpt_entry->pd_flags |= cpu_to_be32(MLX4_MPT_PD_FLAG_FAST_REG | MLX4_MPT_PD_FLAG_RAE); mpt_entry->mtt_sz = cpu_to_be32((1 << mr->mtt.order) * - MLX4_MTT_ENTRY_PER_SEG); + dev->caps.mtts_per_seg); } else { mpt_entry->flags |= cpu_to_be32(MLX4_MPT_FLAG_SW_OWNS); } @@ -391,7 +391,7 @@ static int mlx4_write_mtt_chunk(struct mlx4_dev *dev, struct mlx4_mtt *mtt, (start_index + npages - 1) / (PAGE_SIZE / sizeof (u64))) return -EINVAL; - if (start_index & (MLX4_MTT_ENTRY_PER_SEG - 1)) + if (start_index & (dev->caps.mtts_per_seg - 1)) return -EINVAL; mtts = mlx4_table_find(&priv->mr_table.mtt_table, mtt->first_seg + |