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authorEric Dumazet <dada1@cosmosbay.com>2009-05-07 07:20:39 +0000
committerDavid S. Miller <davem@davemloft.net>2009-05-07 14:52:28 -0700
commit7aedec2ad5314b173e78ca3f4edb4ceaa02248bb (patch)
tree9b9ed7561bf13bcaa11f1f6ac7b4da2c444b0044
parentf5f8d86b231e0489c33542c42afbb14d32411ee8 (diff)
tcp: tcp_prequeue() can use keyed wakeups
We can avoid waking up tasks not interested in receive notifications, using wake_up_interruptible_poll() instead of wake_up_interruptible() Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--include/net/tcp.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h
index ac37228b700..87d210bb12a 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -908,7 +908,8 @@ static inline int tcp_prequeue(struct sock *sk, struct sk_buff *skb)
tp->ucopy.memory = 0;
} else if (skb_queue_len(&tp->ucopy.prequeue) == 1) {
- wake_up_interruptible(sk->sk_sleep);
+ wake_up_interruptible_poll(sk->sk_sleep,
+ POLLIN | POLLRDNORM | POLLRDBAND);
if (!inet_csk_ack_scheduled(sk))
inet_csk_reset_xmit_timer(sk, ICSK_TIME_DACK,
(3 * TCP_RTO_MIN) / 4,