[dpdk-dev] [PATCH] ixgbe: use rte_mbuf_prefetch_part2 for cacheline1 access

[Jianbo Liu]

On 17 June 2016 at 22:06, Jerin Jacob <jerin.jacob at caviumnetworks.com> wrote:
> made second cache line access behavior same as IA
>
> Signed-off-by: Jerin Jacob <jerin.jacob at caviumnetworks.com>
> ---
>  drivers/net/ixgbe/ixgbe_rxtx_vec_neon.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/net/ixgbe/ixgbe_rxtx_vec_neon.c b/drivers/net/ixgbe/ixgbe_rxtx_vec_neon.c
> index 9c1d124..64a329e 100644
> --- a/drivers/net/ixgbe/ixgbe_rxtx_vec_neon.c
> +++ b/drivers/net/ixgbe/ixgbe_rxtx_vec_neon.c
> @@ -280,10 +280,10 @@ _recv_raw_pkts_vec(struct ixgbe_rx_queue *rxq, struct rte_mbuf **rx_pkts,
>                 vst1q_u64((uint64_t *)&rx_pkts[pos + 2], mbp2);
>
>                 if (split_packet) {
> -                       rte_prefetch_non_temporal(&rx_pkts[pos]->cacheline1);
> -                       rte_prefetch_non_temporal(&rx_pkts[pos + 1]->cacheline1);
> -                       rte_prefetch_non_temporal(&rx_pkts[pos + 2]->cacheline1);
> -                       rte_prefetch_non_temporal(&rx_pkts[pos + 3]->cacheline1);
> +                       rte_mbuf_prefetch_part2(rx_pkts[pos]);
> +                       rte_mbuf_prefetch_part2(rx_pkts[pos + 1]);
> +                       rte_mbuf_prefetch_part2(rx_pkts[pos + 2]);
> +                       rte_mbuf_prefetch_part2(rx_pkts[pos + 3]);
>                 }
>
>                 /* D.1 pkt 3,4 convert format from desc to pktmbuf */
> --
> 2.5.5
>

Reviewed-by: Jianbo Liu <jianbo.liu at linaro.org>