From 8abaeebfa7ef9a5600f4f596d2e94aa253f47553 Mon Sep 17 00:00:00 2001 From: Lorenzo Bianconi 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 Signed-off-by: Jesper Dangaard Brouer Signed-off-by: Lorenzo Bianconi Signed-off-by: David S. Miller --- 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++;