From ea11bbe0c94b045fdefc05476b69a2eef999a9c4 Mon Sep 17 00:00:00 2001 From: Benjamin LaHaise Date: Tue, 4 Aug 2009 10:21:57 +0000 Subject: vxge: prefetch skb->data This patch implements prefetching of skb->data from a copy of the pointer in the descriptor (which is already in the L1 cache at this point). This improves netperf rx performance (netperf -L 0,0 -c -H 192.168.254.2 -- -M 131072 -m 131072) by 4.9% on a P4 Xeon host. Signed-off-by: Benjamin LaHaise Signed-off-by: Sreenivasa Honnur Signed-off-by: Ramkrishna Vepa Signed-off-by: David S. Miller --- drivers/net/vxge/vxge-main.h | 1 + 1 file changed, 1 insertion(+) (limited to 'drivers/net/vxge/vxge-main.h') diff --git a/drivers/net/vxge/vxge-main.h b/drivers/net/vxge/vxge-main.h index 8b3989bc707f..9c36b3a9a63d 100644 --- a/drivers/net/vxge/vxge-main.h +++ b/drivers/net/vxge/vxge-main.h @@ -378,6 +378,7 @@ struct vxgedev { struct vxge_rx_priv { struct sk_buff *skb; + unsigned char *skb_data; dma_addr_t data_dma; dma_addr_t data_size; }; -- cgit v1.2.3