diff options
| author | Michael Chan <mchan@broadcom.com> | 2010-05-06 10:58:13 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-05-07 07:17:24 +0200 |
| commit | a33fa66bcf365ffe5b79d1ae1d3582cc261ae56e (patch) | |
| tree | cf714757a5c3644bd8154a4da0cea4eb53a80032 /fs/direct-io.c | |
| parent | bnx2: Add GRO support. (diff) | |
| download | linux-a33fa66bcf365ffe5b79d1ae1d3582cc261ae56e.tar.xz linux-a33fa66bcf365ffe5b79d1ae1d3582cc261ae56e.zip | |
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>
Diffstat (limited to 'fs/direct-io.c')
0 files changed, 0 insertions, 0 deletions