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authorEilon Greenstein <eilong@broadcom.com>2009-08-12 12:23:20 +0400
committerDavid S. Miller <davem@davemloft.net>2009-08-13 10:02:39 +0400
commit619e7a66b515f5f6b1cbe6f378f6a4ca3a65ac52 (patch)
tree56f2904a10f96b642b4f95ceb41de6d748beeb7c /drivers/net/bnx2x_main.c
parent6fe49bb978de3de0ba7ff9d6b2d55a15518db2a3 (diff)
downloadlinux-619e7a66b515f5f6b1cbe6f378f6a4ca3a65ac52.tar.xz
bnx2x: Prefetch the page containing the BD descriptor
Signed-off-by: Vladislav Zolotarov <vladz@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/bnx2x_main.c')
-rw-r--r--drivers/net/bnx2x_main.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/net/bnx2x_main.c b/drivers/net/bnx2x_main.c
index 88f30d254095..bdc2e71f491c 100644
--- a/drivers/net/bnx2x_main.c
+++ b/drivers/net/bnx2x_main.c
@@ -1498,6 +1498,13 @@ static int bnx2x_rx_int(struct bnx2x_fastpath *fp, int budget)
bd_prod = RX_BD(bd_prod);
bd_cons = RX_BD(bd_cons);
+ /* Prefetch the page containing the BD descriptor
+ at producer's index. It will be needed when new skb is
+ allocated */
+ prefetch((void *)(PAGE_ALIGN((unsigned long)
+ (&fp->rx_desc_ring[bd_prod])) -
+ PAGE_SIZE + 1));
+
cqe = &fp->rx_comp_ring[comp_ring_cons];
cqe_fp_flags = cqe->fast_path_cqe.type_error_flags;