diff options
| author | David S. Miller <davem@sunset.davemloft.net> | 2006-11-09 22:58:25 -0500 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-12-03 00:21:52 -0500 |
| commit | 931731123a103cfb3f70ac4b7abfc71d94ba1f03 (patch) | |
| tree | 0af6636fde05f74a8aa5421bfe9828e2a209170d /include/net/ip.h | |
| parent | ef56e622c61e74dd6077615c9ea76c5132195880 (diff) | |
[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 <davem@davemloft.net>
Diffstat (limited to 'include/net/ip.h')
| -rw-r--r-- | include/net/ip.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/net/ip.h b/include/net/ip.h index b6d95e553401..949fa8683626 100644 --- a/include/net/ip.h +++ b/include/net/ip.h | |||
| @@ -97,7 +97,7 @@ extern int ip_mc_output(struct sk_buff *skb); | |||
| 97 | extern int ip_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *)); | 97 | extern int ip_fragment(struct sk_buff *skb, int (*output)(struct sk_buff *)); |
| 98 | extern int ip_do_nat(struct sk_buff *skb); | 98 | extern int ip_do_nat(struct sk_buff *skb); |
| 99 | extern void ip_send_check(struct iphdr *ip); | 99 | extern void ip_send_check(struct iphdr *ip); |
| 100 | extern int ip_queue_xmit(struct sk_buff *skb, int ipfragok); | 100 | extern int ip_queue_xmit(struct sk_buff *skb, struct sock *sk, int ipfragok); |
| 101 | extern void ip_init(void); | 101 | extern void ip_init(void); |
| 102 | extern int ip_append_data(struct sock *sk, | 102 | extern int ip_append_data(struct sock *sk, |
| 103 | int getfrag(void *from, char *to, int offset, int len, | 103 | int getfrag(void *from, char *to, int offset, int len, |