commit a33fa66bcf365ffe5b79d1ae1d3582cc261ae56e
author Michael Chan <mchan@broadcom.com> Thu May 06 08:58:13 2010 +0000
committer David S. Miller <davem@davemloft.net> Thu May 06 22:17:24 2010 -0700
tree cf714757a5c3644bd8154a4da0cea4eb53a80032
parent c67938a9e071fa51c91ed17a14382e128368d115

bnx2: Add prefetches to rx path.

Add prefetches of the skb and the next rx descriptor to speed up rx path.

Use prefetchw() for the skb [suggested by Eric Dumazet].

The rx descriptor is in skb->data which is mapped for streaming mode DMA.
Eric Dumazet pointed out that we should not prefetch the data before
dma_sync.  So we prefetch only if dma_sync is no_op on the system.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>