From 2d7ceece08ad940d0ceac98ab1b5a3b82dfc2a0a Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Tue, 27 Sep 2005 15:22:58 -0700 Subject: [PATCH] [NET]: Prefetch dev->qdisc_lock in dev_queue_xmit() We know the lock is going to be taken. Signed-off-by: Eric Dumazet Signed-off-by: David S. Miller --- net/core/dev.c | 2 ++ 1 file changed, 2 insertions(+) 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) 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. */ -- 2.20.1