From c1f67a88bf62fac0f4151c007b361199c2cd1988 Mon Sep 17 00:00:00 2001
From: Eli Cohen <eli@mellanox.co.il>
Date: Wed, 27 May 2009 14:36:16 -0700
Subject: IB/mthca: 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>
---
drivers/infiniband/hw/mthca/mthca_dev.h | 1 +
1 file changed, 1 insertion(+)
(limited to 'drivers/infiniband/hw/mthca/mthca_dev.h')
diff --git a/drivers/infiniband/hw/mthca/mthca_dev.h b/drivers/infiniband/hw/mthca/mthca_dev.h
index 252590116df5..9ef611f6dd36 100644
--- a/drivers/infiniband/hw/mthca/mthca_dev.h
+++ b/drivers/infiniband/hw/mthca/mthca_dev.h
@@ -159,6 +159,7 @@ struct mthca_limits {
int reserved_eqs;
int num_mpts;
int num_mtt_segs;
+ int mtt_seg_size;
int fmr_reserved_mtts;
int reserved_mtts;
int reserved_mrws;
--
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