diff options
| author |   Benjamin LaHaise <ben.lahaise@neterion.com> | 2009-08-04 10:21:57 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2009-08-05 13:10:45 -0700 |
| commit | ea11bbe0c94b045fdefc05476b69a2eef999a9c4 (patch) | |
| tree | 17e6ba82dbfd3e90f7728fa6b08fb01d1613168b /drivers/net/vxge/vxge-main.h | |
| parent | vxge: prefetch RxD descriptors (diff) | |
| download | linux-dev-ea11bbe0c94b045fdefc05476b69a2eef999a9c4.tar.xz linux-dev-ea11bbe0c94b045fdefc05476b69a2eef999a9c4.zip | |
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 <ben.lahaise@neterion.com>
Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com>
Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
| -rw-r--r-- | drivers/net/vxge/vxge-main.h | 1 |
1 files changed, 1 insertions, 0 deletions
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; }; |