diff options
| author | Mike Galbraith <efault@gmx.de> | 2010-03-02 23:46:50 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-03-04 03:53:51 -0500 |
| commit | c839d30a41dd92eb32d7fcfa2b4e99042fc64bf2 (patch) | |
| tree | f439f53a8e7a77590d249b5bb0c584db171366da /include | |
| parent | 8f37ada5b5f6bfb4d251a7f510f249cb855b77b3 (diff) | |
net: add scheduler sync hint to tcp_prequeue().
Decreases the odds wakee will suffer from frequent cache misses.
Signed-off-by: Mike Galbraith <efault@gmx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/tcp.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/net/tcp.h b/include/net/tcp.h index 56f0aec40ed6..75be5a28815d 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h | |||
| @@ -939,7 +939,7 @@ static inline int tcp_prequeue(struct sock *sk, struct sk_buff *skb) | |||
| 939 | 939 | ||
| 940 | tp->ucopy.memory = 0; | 940 | tp->ucopy.memory = 0; |
| 941 | } else if (skb_queue_len(&tp->ucopy.prequeue) == 1) { | 941 | } else if (skb_queue_len(&tp->ucopy.prequeue) == 1) { |
| 942 | wake_up_interruptible_poll(sk->sk_sleep, | 942 | wake_up_interruptible_sync_poll(sk->sk_sleep, |
| 943 | POLLIN | POLLRDNORM | POLLRDBAND); | 943 | POLLIN | POLLRDNORM | POLLRDBAND); |
| 944 | if (!inet_csk_ack_scheduled(sk)) | 944 | if (!inet_csk_ack_scheduled(sk)) |
| 945 | inet_csk_reset_xmit_timer(sk, ICSK_TIME_DACK, | 945 | inet_csk_reset_xmit_timer(sk, ICSK_TIME_DACK, |