diff options
Diffstat (limited to 'target/linux/mvebu/patches-5.10/007-net-mvneta-move-header-prefetch-in-mvneta_swbm_rx_fr.patch')
| -rw-r--r-- | target/linux/mvebu/patches-5.10/007-net-mvneta-move-header-prefetch-in-mvneta_swbm_rx_fr.patch | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/target/linux/mvebu/patches-5.10/007-net-mvneta-move-header-prefetch-in-mvneta_swbm_rx_fr.patch b/target/linux/mvebu/patches-5.10/007-net-mvneta-move-header-prefetch-in-mvneta_swbm_rx_fr.patch new file mode 100644 index 0000000000..e075796e41 --- /dev/null +++ b/target/linux/mvebu/patches-5.10/007-net-mvneta-move-header-prefetch-in-mvneta_swbm_rx_fr.patch @@ -0,0 +1,43 @@ +From fa383f6b77a2ed788266fa8fbfb659aa284d2f58 Mon Sep 17 00:00:00 2001 +From: Lorenzo Bianconi <lorenzo@kernel.org> +Date: Sat, 19 Oct 2019 10:13:25 +0200 +Subject: [PATCH 5/7] net: mvneta: move header prefetch in mvneta_swbm_rx_frame + +Move data buffer prefetch in mvneta_swbm_rx_frame after +dma_sync_single_range_for_cpu + +Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org> +Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> +Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + drivers/net/ethernet/marvell/mvneta.c | 7 +++---- + 1 file changed, 3 insertions(+), 4 deletions(-) + +--- a/drivers/net/ethernet/marvell/mvneta.c ++++ b/drivers/net/ethernet/marvell/mvneta.c +@@ -2038,6 +2038,9 @@ mvneta_swbm_rx_frame(struct mvneta_port + rx_desc->buf_phys_addr, + len, dma_dir); + ++ /* Prefetch header */ ++ prefetch(data); ++ + xdp->data_hard_start = data; + xdp->data = data + MVNETA_SKB_HEADROOM + MVNETA_MH_SIZE; + xdp->data_end = xdp->data + data_len; +@@ -2135,14 +2138,10 @@ static int mvneta_rx_swbm(struct napi_st + while (rx_proc < budget && rx_proc < rx_todo) { + struct mvneta_rx_desc *rx_desc = mvneta_rxq_next_desc_get(rxq); + u32 rx_status, index; +- unsigned char *data; + struct page *page; + + index = rx_desc - rxq->descs; + page = (struct page *)rxq->buf_virt_addr[index]; +- data = page_address(page); +- /* Prefetch header */ +- prefetch(data); + + rx_status = rx_desc->status; + rx_proc++; |