From 931731123a103cfb3f70ac4b7abfc71d94ba1f03 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Thu, 9 Nov 2006 19:58:25 -0800 Subject: [TCP]: Don't set SKB owner in tcp_transmit_skb(). The data itself is already charged to the SKB, doing the skb_set_owner_w() just generates a lot of noise and extra atomics we don't really need. Lmbench improvements on lat_tcp are minimal: before: TCP latency using localhost: 23.2701 microseconds TCP latency using localhost: 23.1994 microseconds TCP latency using localhost: 23.2257 microseconds after: TCP latency using localhost: 22.8380 microseconds TCP latency using localhost: 22.9465 microseconds TCP latency using localhost: 22.8462 microseconds Signed-off-by: David S. Miller --- net/dccp/output.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'net/dccp') diff --git a/net/dccp/output.c b/net/dccp/output.c index 7102e3aed4ca..2cc4f4b2a9dd 100644 --- a/net/dccp/output.c +++ b/net/dccp/output.c @@ -125,7 +125,7 @@ static int dccp_transmit_skb(struct sock *sk, struct sk_buff *skb) DCCP_INC_STATS(DCCP_MIB_OUTSEGS); memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt)); - err = icsk->icsk_af_ops->queue_xmit(skb, 0); + err = icsk->icsk_af_ops->queue_xmit(skb, sk, 0); if (err <= 0) return err; @@ -426,7 +426,7 @@ int dccp_send_reset(struct sock *sk, enum dccp_reset_codes code) code); if (skb != NULL) { memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt)); - err = inet_csk(sk)->icsk_af_ops->queue_xmit(skb, 0); + err = inet_csk(sk)->icsk_af_ops->queue_xmit(skb, sk, 0); if (err == NET_XMIT_CN) err = 0; } -- cgit v1.2.3