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authorEric Dumazet <dada1@cosmosbay.com>2005-09-27 18:22:58 -0400
committerDavid S. Miller <davem@davemloft.net>2005-09-27 18:22:58 -0400
commit2d7ceece08ad940d0ceac98ab1b5a3b82dfc2a0a (patch)
tree7b439a9d765c2cb63f33deddda649014957bfc00 /net
parentbc8dfcb93970ad7139c976356bfc99d7e251deaf (diff)
[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>
Diffstat (limited to 'net')
-rw-r--r--net/core/dev.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/net/core/dev.c b/net/core/dev.c
index 37c881070963..9066c874e273 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -1259,6 +1259,8 @@ int dev_queue_xmit(struct sk_buff *skb)
1259 if (skb_checksum_help(skb, 0)) 1259 if (skb_checksum_help(skb, 0))
1260 goto out_kfree_skb; 1260 goto out_kfree_skb;
1261 1261
1262 spin_lock_prefetch(&dev->queue_lock);
1263
1262 /* Disable soft irqs for various locks below. Also 1264 /* Disable soft irqs for various locks below. Also
1263 * stops preemption for RCU. 1265 * stops preemption for RCU.
1264 */ 1266 */