From 426328963078f644c7194403a308588cf684d4c6 Mon Sep 17 00:00:00 2001 From: Steve Wise Date: Mon, 16 Feb 2009 21:23:32 -0800 Subject: [PATCH] RDMA/cxgb3: Remove modulo math from build_rdma_recv() Remove modulo usage to avoid a divide in the fast path (not all gcc versions do strength reduction here). Signed-off-by: Steve Wise Signed-off-by: Roland Dreier --- drivers/infiniband/hw/cxgb3/iwch_qp.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/infiniband/hw/cxgb3/iwch_qp.c b/drivers/infiniband/hw/cxgb3/iwch_qp.c index c84ac5bfb107..0e18f6fc23e2 100644 --- a/drivers/infiniband/hw/cxgb3/iwch_qp.c +++ b/drivers/infiniband/hw/cxgb3/iwch_qp.c @@ -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]); -- 2.20.1