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RDMA/cxgb3: Remove modulo math from build_rdma_recv()

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Remove modulo usage to avoid a divide in the fast path (not all
gcc versions do strength reduction here).

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Steve Wise 2009-02-16 21:23:32 -08:00 committed by Roland Dreier
parent 42fb61f02f
commit 4263289630
1 changed files with 2 additions and 2 deletions
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4
drivers/infiniband/hw/cxgb3/iwch_qp.c
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@ -263,8 +263,8 @@ static int build_rdma_recv(struct iwch_qp *qhp, union t3_wr *wqe,
wqe->recv.sgl[i].len = cpu_to_be32(wr->sg_list[i].length);
/* to in the WQE == the offset into the page */
wqe->recv.sgl[i].to = cpu_to_be64(((u32) wr->sg_list[i].addr) %
(1UL << (12 + page_size[i])));
wqe->recv.sgl[i].to = cpu_to_be64(((u32)wr->sg_list[i].addr) &
((1UL << (12 + page_size[i])) - 1));
/* pbl_addr is the adapters address in the PBL */
wqe->recv.pbl_addr[i] = cpu_to_be32(pbl_addr[i]);