| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame] | 1 | From fa383f6b77a2ed788266fa8fbfb659aa284d2f58 Mon Sep 17 00:00:00 2001 |
| 2 | From: Lorenzo Bianconi <lorenzo@kernel.org> |
| 3 | Date: Sat, 19 Oct 2019 10:13:25 +0200 |
| 4 | Subject: [PATCH 5/7] net: mvneta: move header prefetch in mvneta_swbm_rx_frame |
| 5 | |
| 6 | Move data buffer prefetch in mvneta_swbm_rx_frame after |
| 7 | dma_sync_single_range_for_cpu |
| 8 | |
| 9 | Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org> |
| 10 | Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> |
| 11 | Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> |
| 12 | Signed-off-by: David S. Miller <davem@davemloft.net> |
| 13 | --- |
| 14 | drivers/net/ethernet/marvell/mvneta.c | 7 +++---- |
| 15 | 1 file changed, 3 insertions(+), 4 deletions(-) |
| 16 | |
| 17 | --- a/drivers/net/ethernet/marvell/mvneta.c |
| 18 | +++ b/drivers/net/ethernet/marvell/mvneta.c |
| 19 | @@ -2038,6 +2038,9 @@ mvneta_swbm_rx_frame(struct mvneta_port |
| 20 | rx_desc->buf_phys_addr, |
| 21 | len, dma_dir); |
| 22 | |
| 23 | + /* Prefetch header */ |
| 24 | + prefetch(data); |
| 25 | + |
| 26 | xdp->data_hard_start = data; |
| 27 | xdp->data = data + MVNETA_SKB_HEADROOM + MVNETA_MH_SIZE; |
| 28 | xdp->data_end = xdp->data + data_len; |
| 29 | @@ -2135,14 +2138,10 @@ static int mvneta_rx_swbm(struct napi_st |
| 30 | while (rx_proc < budget && rx_proc < rx_todo) { |
| 31 | struct mvneta_rx_desc *rx_desc = mvneta_rxq_next_desc_get(rxq); |
| 32 | u32 rx_status, index; |
| 33 | - unsigned char *data; |
| 34 | struct page *page; |
| 35 | |
| 36 | index = rx_desc - rxq->descs; |
| 37 | page = (struct page *)rxq->buf_virt_addr[index]; |
| 38 | - data = page_address(page); |
| 39 | - /* Prefetch header */ |
| 40 | - prefetch(data); |
| 41 | |
| 42 | rx_status = rx_desc->status; |
| 43 | rx_proc++; |