bnx2x: Remove two prefetch() (214f1c87) · Commits · 戴 / test

1) Even on 64bit arches, sizeof(struct sk_buff) < 256 2) No need to prefetch same pointer twice. Signed-off-by:

drivers/net/bnx2x_main.c

+0 −2

Original line number	Diff line number	Diff line
		@@ -1617,7 +1617,6 @@ static int bnx2x_rx_int(struct bnx2x_fastpath *fp, int budget)
		rx_buf = &fp->rx_buf_ring[bd_cons];
		skb = rx_buf->skb;
		prefetch(skb);
		prefetch((u8 *)skb + 256);
		len = le16_to_cpu(cqe->fast_path_cqe.pkt_len);
		pad = cqe->fast_path_cqe.placement_offset;

		@@ -1668,7 +1667,6 @@ static int bnx2x_rx_int(struct bnx2x_fastpath *fp, int budget)
		dma_unmap_addr(rx_buf, mapping),
		pad + RX_COPY_THRESH,
		DMA_FROM_DEVICE);
		prefetch(skb);
		prefetch(((char *)(skb)) + 128);

		/* is this an error packet? */