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[NET]: Prefetch dev->qdisc_lock in dev_queue_xmit() 

We know the lock is going to be taken.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2005-09-27 15:22:58 -07:00 committed by David S. Miller
parent bc8dfcb939
commit 2d7ceece08
1 changed files with 2 additions and 0 deletions
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2
net/core/dev.c
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@ -1259,6 +1259,8 @@ int dev_queue_xmit(struct sk_buff *skb)
if (skb_checksum_help(skb, 0))
goto out_kfree_skb;
spin_lock_prefetch(&dev->queue_lock);
/* Disable soft irqs for various locks below. Also
* stops preemption for RCU.
*/