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RDMA/hns: Optimize post and poll process 

Add unlikely() and likely() to optimize main I/O process code.

Link: https://lore.kernel.org/r/1589982799-28728-4-git-send-email-liweihang@huawei.com
Signed-off-by: Lang Cheng <chenglang@huawei.com>
Signed-off-by: Weihang Li <liweihang@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Lang Cheng 2020-05-20 21:53:13 +08:00 коммит произвёл Jason Gunthorpe
Родитель 05e6a5a635
Коммит 0db6570947
1 изменённых файлов: 14 добавлений и 13 удалений
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27
drivers/infiniband/hw/hns/hns_roce_hw_v2.c
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@ -187,15 +187,15 @@ static int set_rwqe_data_seg(struct ib_qp *ibqp, const struct ib_send_wr *wr,
int i;
if (wr->send_flags & IB_SEND_INLINE && valid_num_sge) {
if (le32_to_cpu(rc_sq_wqe->msg_len) >
hr_dev->caps.max_sq_inline) {
if (unlikely(le32_to_cpu(rc_sq_wqe->msg_len) >
hr_dev->caps.max_sq_inline)) {
ibdev_err(ibdev, "inline len(1-%d)=%d, illegal",
rc_sq_wqe->msg_len,
hr_dev->caps.max_sq_inline);
return -EINVAL;
}
if (wr->opcode == IB_WR_RDMA_READ) {
if (unlikely(wr->opcode == IB_WR_RDMA_READ)) {
ibdev_err(ibdev, "Not support inline data!\n");
return -EINVAL;
}
@ -526,7 +526,7 @@ static int hns_roce_v2_post_send(struct ib_qp *ibqp,
spin_lock_irqsave(&qp->sq.lock, flags);
ret = check_send_valid(hr_dev, qp);
if (ret) {
if (unlikely(ret)) {
*bad_wr = wr;
nreq = 0;
goto out;
@ -562,7 +562,7 @@ static int hns_roce_v2_post_send(struct ib_qp *ibqp,
else if (ibqp->qp_type == IB_QPT_RC)
ret = set_rc_wqe(qp, wr, wqe, &sge_idx, owner_bit);
if (ret) {
if (unlikely(ret)) {
*bad_wr = wr;
goto out;
}
@ -612,15 +612,15 @@ static int hns_roce_v2_post_recv(struct ib_qp *ibqp,
spin_lock_irqsave(&hr_qp->rq.lock, flags);
ret = check_recv_valid(hr_dev, hr_qp);
if (ret) {
if (unlikely(ret)) {
*bad_wr = wr;
nreq = 0;
goto out;
}
for (nreq = 0; wr; ++nreq, wr = wr->next) {
if (hns_roce_wq_overflow(&hr_qp->rq, nreq,
hr_qp->ibqp.recv_cq)) {
if (unlikely(hns_roce_wq_overflow(&hr_qp->rq, nreq,
hr_qp->ibqp.recv_cq))) {
ret = -ENOMEM;
*bad_wr = wr;
goto out;
@ -766,7 +766,7 @@ static int hns_roce_v2_post_srq_recv(struct ib_srq *ibsrq,
}
wqe_idx = find_empty_entry(&srq->idx_que, srq->wqe_cnt);
if (wqe_idx < 0) {
if (unlikely(wqe_idx < 0)) {
ret = -ENOMEM;
*bad_wr = wr;
break;
@ -2977,7 +2977,7 @@ static int hns_roce_handle_recv_inl_wqe(struct hns_roce_v2_cqe *cqe,
wqe_buf += size;
}
if (data_len) {
if (unlikely(data_len)) {
wc->status = IB_WC_LOC_LEN_ERR;
return -EAGAIN;
}
@ -3069,7 +3069,8 @@ static void get_cqe_status(struct hns_roce_dev *hr_dev, struct hns_roce_qp *qp,
break;
}
if (wc->status == IB_WC_SUCCESS || wc->status == IB_WC_WR_FLUSH_ERR)
if (likely(wc->status == IB_WC_SUCCESS ||
wc->status == IB_WC_WR_FLUSH_ERR))
return;
ibdev_err(&hr_dev->ib_dev, "error cqe status 0x%x:\n", cqe_status);
@ -3164,7 +3165,7 @@ static int hns_roce_v2_poll_one(struct hns_roce_cq *hr_cq,
}
get_cqe_status(hr_dev, *cur_qp, cqe, wc);
if (wc->status != IB_WC_SUCCESS)
if (unlikely(wc->status != IB_WC_SUCCESS))
return 0;
if (is_send) {
@ -3263,7 +3264,7 @@ static int hns_roce_v2_poll_one(struct hns_roce_cq *hr_cq,
opcode == HNS_ROCE_V2_OPCODE_SEND_WITH_INV) &&
(roce_get_bit(cqe->byte_4, V2_CQE_BYTE_4_RQ_INLINE_S))) {
ret = hns_roce_handle_recv_inl_wqe(cqe, cur_qp, wc);
if (ret)
if (unlikely(ret))
return -EAGAIN;
}