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(parent: c67938a) | patch
bnx2: Add prefetches to rx path.
authorMichael Chan <mchan@broadcom.com>
Thu, 6 May 2010 08:58:13 +0000 (08:58 +0000)
committerDavid S. Miller <davem@davemloft.net>
Fri, 7 May 2010 05:17:24 +0000 (22:17 -0700)
commita33fa66bcf365ffe5b79d1ae1d3582cc261ae56e
treecf714757a5c3644bd8154a4da0cea4eb53a80032tree | snapshot
parentc67938a9e071fa51c91ed17a14382e128368d115commit | diff
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>
drivers/net/bnx2.c diff | blob | history
drivers/net/bnx2.h diff | blob | history
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