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mlx4_core: Add module parameter for number of MTTs per segment

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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>
This commit is contained in:
Eli Cohen
2009-05-27 14:38:34 -07:00
committed by Roland Dreier
parent 210af919c9
commit ab6bf42e23
4 changed files with 17 additions and 6 deletions
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include/linux/mlx4/device.h
+1
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@@ -210,6 +210,7 @@ struct mlx4_caps {
int num_comp_vectors;
int num_mpts;
int num_mtt_segs;
int mtts_per_seg;
int fmr_reserved_mtts;
int reserved_mtts;
int reserved_mrws;