From: Eric Dumazet <eric.dumazet@gmail.com>
To: David Miller <davem@davemloft.net>
Cc: netdev <netdev@vger.kernel.org>
Subject: [PATCH net-next] net: add a prefetch in socket backlog processing
Date: Tue, 01 May 2012 04:07:09 +0200 [thread overview]
Message-ID: <1335838029.11396.12.camel@edumazet-glaptop> (raw)
From: Eric Dumazet <edumazet@google.com>
TCP or UDP stacks have big enough latencies that prefetching next
pointer is worth it.
Signed-off-by: Eric Dumazet <edumazet@google.com>
---
net/core/sock.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/core/sock.c b/net/core/sock.c
index 836bca6..1a88351 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -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);
next reply other threads:[~2012-05-01 2:07 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-01 2:07 Eric Dumazet [this message]
2012-05-01 3:24 ` [PATCH net-next] net: add a prefetch in socket backlog processing Joe Perches
2012-05-01 6:34 ` Eric Dumazet
2012-05-01 6:42 ` Eric Dumazet
2012-05-01 11:52 ` Joe Perches
2012-05-01 12:29 ` Eric Dumazet
2012-05-01 13:09 ` Joe Perches
2012-05-01 13:41 ` David Miller
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