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| author | Stephen Hemminger <shemminger@osdl.org> | 2005-12-09 11:35:09 -0800 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2005-12-12 15:27:21 -0500 |
| commit | d70cd51ac0585a9273abea4c333e8f0dd8385d27 (patch) | |
| tree | 07b77d08e778e304727fedc0f7186f37a31e075c /drivers/net/sky2.c | |
| parent | 8c463ef7928d7a42bb9ca410df9b294dc01c1850 (diff) | |
| download | op-kernel-dev-d70cd51ac0585a9273abea4c333e8f0dd8385d27.zip op-kernel-dev-d70cd51ac0585a9273abea4c333e8f0dd8385d27.tar.gz | |
[PATCH] sky2: prefetch tuning
Add a couple more prefetches to where we walk the rings.
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Diffstat (limited to 'drivers/net/sky2.c')
| -rw-r--r-- | drivers/net/sky2.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/sky2.c b/drivers/net/sky2.c index 54947ae..39916e7 100644 --- a/drivers/net/sky2.c +++ b/drivers/net/sky2.c @@ -45,6 +45,7 @@ #include <linux/delay.h> #include <linux/workqueue.h> #include <linux/if_vlan.h> +#include <linux/prefetch.h> #include <linux/mii.h> #include <asm/irq.h> @@ -1248,6 +1249,7 @@ static void sky2_tx_complete(struct sky2_port *sky2, u16 done) nxt = re->idx; BUG_ON(nxt >= TX_RING_SIZE); + prefetch(sky2->tx_ring + nxt); /* Check for partial status */ if (tx_dist(put, done) < tx_dist(put, nxt)) @@ -1659,6 +1661,7 @@ static struct sk_buff *sky2_receive(struct sky2_port *sky2, sky2->netdev->name, sky2->rx_next, status, length); sky2->rx_next = (sky2->rx_next + 1) % sky2->rx_pending; + prefetch(sky2->rx_ring + sky2->rx_next); if (status & GMR_FS_ANY_ERR) goto error; |
