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44 lines
1.5 KiB
Diff
44 lines
1.5 KiB
Diff
From 8abaeebfa7ef9a5600f4f596d2e94aa253f47553 Mon Sep 17 00:00:00 2001
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From: Lorenzo Bianconi <lorenzo@kernel.org>
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Date: Sat, 19 Oct 2019 10:13:25 +0200
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Subject: [PATCH 5/7] net: mvneta: move header prefetch in mvneta_swbm_rx_frame
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Move data buffer prefetch in mvneta_swbm_rx_frame after
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dma_sync_single_range_for_cpu
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Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
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Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
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Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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drivers/net/ethernet/marvell/mvneta.c | 7 +++----
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1 file changed, 3 insertions(+), 4 deletions(-)
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--- a/drivers/net/ethernet/marvell/mvneta.c
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+++ b/drivers/net/ethernet/marvell/mvneta.c
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@@ -2038,6 +2038,9 @@ mvneta_swbm_rx_frame(struct mvneta_port
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rx_desc->buf_phys_addr,
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len, dma_dir);
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+ /* Prefetch header */
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+ prefetch(data);
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+
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xdp->data_hard_start = data;
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xdp->data = data + MVNETA_SKB_HEADROOM + MVNETA_MH_SIZE;
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xdp->data_end = xdp->data + data_len;
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@@ -2135,14 +2138,10 @@ static int mvneta_rx_swbm(struct napi_st
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while (rx_proc < budget && rx_proc < rx_todo) {
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struct mvneta_rx_desc *rx_desc = mvneta_rxq_next_desc_get(rxq);
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u32 rx_status, index;
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- unsigned char *data;
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struct page *page;
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index = rx_desc - rxq->descs;
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page = (struct page *)rxq->buf_virt_addr[index];
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- data = page_address(page);
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- /* Prefetch header */
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- prefetch(data);
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rx_status = rx_desc->status;
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rx_proc++;
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