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[net-next,V1,11/11] net/mlx5e: Prefetch skb data on RX

Message ID 1435068862-26488-12-git-send-email-ogerlitz@mellanox.com
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Or Gerlitz June 23, 2015, 2:14 p.m. UTC 
From: Saeed Mahameed <saeedm@mellanox.com>

Prefetch the 1st cache line used by the buffer pointed by
the skb linear data.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_rx.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox

Patch

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c
index 760b3ef..9a93741 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rx.c
@@ -215,6 +215,7 @@  bool mlx5e_poll_rx_cq(struct mlx5e_cq *cq, int budget)
 		wqe_counter    = be16_to_cpu(wqe_counter_be);
 		wqe            = mlx5_wq_ll_get_wqe(&rq->wq, wqe_counter);
 		skb            = rq->skb[wqe_counter];
+		prefetch(skb->data);
 		rq->skb[wqe_counter] = NULL;
 
 		dma_unmap_single(rq->pdev,