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author | Chengchang Tang <tangchengchang@huawei.com> | 2024-01-13 16:59:32 +0800 |
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committer | Leon Romanovsky <leon@kernel.org> | 2024-01-25 11:54:38 +0200 |
commit | 6afc859518319d78164ec616e736af45acbf1cec (patch) | |
tree | e8aac1438c1460ee1848d2f01d066918921e84a0 /drivers/infiniband | |
parent | 4f5731b1fb2246719513dfb918bf71b6818aa5f5 (diff) | |
download | linux-6afc859518319d78164ec616e736af45acbf1cec.tar.gz linux-6afc859518319d78164ec616e736af45acbf1cec.tar.bz2 linux-6afc859518319d78164ec616e736af45acbf1cec.zip |
RDMA/hns: Alloc MTR memory before alloc_mtt()
MTR memory allocation do not depend on allocation of mtt.
This patch moves the allocation of mtr before mtt in preparation for
the following optimization.
Signed-off-by: Chengchang Tang <tangchengchang@huawei.com>
Signed-off-by: Junxian Huang <huangjunxian6@hisilicon.com>
Link: https://lore.kernel.org/r/20240113085935.2838701-4-huangjunxian6@hisilicon.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r-- | drivers/infiniband/hw/hns/hns_roce_mr.c | 47 |
1 files changed, 27 insertions, 20 deletions
diff --git a/drivers/infiniband/hw/hns/hns_roce_mr.c b/drivers/infiniband/hw/hns/hns_roce_mr.c index adc401aea8df..74ea9d8482b9 100644 --- a/drivers/infiniband/hw/hns/hns_roce_mr.c +++ b/drivers/infiniband/hw/hns/hns_roce_mr.c @@ -695,7 +695,7 @@ static int mtr_alloc_bufs(struct hns_roce_dev *hr_dev, struct hns_roce_mtr *mtr, mtr->umem = NULL; mtr->kmem = hns_roce_buf_alloc(hr_dev, total_size, buf_attr->page_shift, - mtr->hem_cfg.is_direct ? + !mtr_has_mtt(buf_attr) ? HNS_ROCE_BUF_DIRECT : 0); if (IS_ERR(mtr->kmem)) { ibdev_err(ibdev, "failed to alloc kmem, ret = %ld.\n", @@ -1054,45 +1054,52 @@ int hns_roce_mtr_create(struct hns_roce_dev *hr_dev, struct hns_roce_mtr *mtr, unsigned int ba_page_shift, struct ib_udata *udata, unsigned long user_addr) { + u64 pgoff = udata ? user_addr & ~PAGE_MASK : 0; struct ib_device *ibdev = &hr_dev->ib_dev; int ret; - ret = mtr_init_buf_cfg(hr_dev, buf_attr, &mtr->hem_cfg, - udata ? user_addr & ~PAGE_MASK : 0); - if (ret) - return ret; - - ret = mtr_alloc_mtt(hr_dev, mtr, ba_page_shift); - if (ret) { - ibdev_err(ibdev, "failed to alloc mtr mtt, ret = %d.\n", ret); - return ret; - } - /* The caller has its own buffer list and invokes the hns_roce_mtr_map() * to finish the MTT configuration. */ if (buf_attr->mtt_only) { mtr->umem = NULL; mtr->kmem = NULL; - return 0; + } else { + ret = mtr_alloc_bufs(hr_dev, mtr, buf_attr, udata, user_addr); + if (ret) { + ibdev_err(ibdev, + "failed to alloc mtr bufs, ret = %d.\n", ret); + return ret; + } } - ret = mtr_alloc_bufs(hr_dev, mtr, buf_attr, udata, user_addr); + ret = mtr_init_buf_cfg(hr_dev, buf_attr, &mtr->hem_cfg, pgoff); + if (ret) + goto err_init_buf; + + ret = mtr_alloc_mtt(hr_dev, mtr, ba_page_shift); if (ret) { - ibdev_err(ibdev, "failed to alloc mtr bufs, ret = %d.\n", ret); - goto err_alloc_mtt; + ibdev_err(ibdev, "failed to alloc mtr mtt, ret = %d.\n", ret); + goto err_init_buf; } + if (buf_attr->mtt_only) + return 0; + /* Write buffer's dma address to MTT */ ret = mtr_map_bufs(hr_dev, mtr); - if (ret) + if (ret) { ibdev_err(ibdev, "failed to map mtr bufs, ret = %d.\n", ret); - else - return 0; + goto err_alloc_mtt; + } + + return 0; - mtr_free_bufs(hr_dev, mtr); err_alloc_mtt: mtr_free_mtt(hr_dev, mtr); +err_init_buf: + mtr_free_bufs(hr_dev, mtr); + return ret; } |