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net: add a prefetch in socket backlog processing 

TCP or UDP stacks have big enough latencies that prefetching next
pointer is worth it.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2012-04-30 16:07:09 +00:00 committed by David S. Miller
parent 5dac94e109
commit e4cbb02a10
1 changed files with 1 additions and 0 deletions
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1
net/core/sock.c
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@ -1700,6 +1700,7 @@ static void __release_sock(struct sock *sk)
do {
struct sk_buff *next = skb->next;
prefetch(next);
WARN_ON_ONCE(skb_dst_is_noref(skb));
skb->next = NULL;
sk_backlog_rcv(sk, skb);