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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++;
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