diff options
| author | Steve Wise <swise@opengridcomputing.com> | 2009-02-16 21:23:32 -0800 |
|---|---|---|
| committer | Roland Dreier <rolandd@cisco.com> | 2009-02-16 21:23:32 -0800 |
| commit | 426328963078f644c7194403a308588cf684d4c6 (patch) | |
| tree | 4f4d22db8b998b0275800c69075cf1471bdc7b9c /drivers/infiniband | |
| parent | 42fb61f02f9bdc476c7a76d3cce0400d989f44c5 (diff) | |
| download | linux-3.10-426328963078f644c7194403a308588cf684d4c6.tar.gz linux-3.10-426328963078f644c7194403a308588cf684d4c6.tar.bz2 linux-3.10-426328963078f644c7194403a308588cf684d4c6.zip | |
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 <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/hw/cxgb3/iwch_qp.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/infiniband/hw/cxgb3/iwch_qp.c b/drivers/infiniband/hw/cxgb3/iwch_qp.c index c84ac5bfb10..0e18f6fc23e 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]); |