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d6cc1d642d
linux/net/ipv4
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Eric Dumazet d6cc1d642d inetpeer: various changes 
Try to reduce cache line contentions in peer management, to reduce IP
defragmentation overhead.

- peer_fake_node is marked 'const' to make sure its not modified.
  (tested with CONFIG_DEBUG_RODATA=y)

- Group variables in two structures to reduce number of dirtied cache
lines. One named "peers" for avl tree root, its number of entries, and
associated lock. (candidate for RCU conversion)

- A second one named "unused_peers" for unused list and its lock

- Add a !list_empty() test in unlink_from_unused() to avoid taking lock
when entry is not unused.

- Use atomic_dec_and_lock() in inet_putpeer() to avoid taking lock in
some cases.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-06-14 23:13:08 -07:00
..
netfilter netfilter: xtables: stackptr should be percpu 2010-05-31 16:41:35 +02:00
af_inet.c net-next: remove useless union keyword 2010-06-10 23:31:35 -07:00
ah4.c
arp.c net-next: remove useless union keyword 2010-06-10 23:31:35 -07:00
cipso_ipv4.c net: Remove unnecessary returns from void function()s 2010-05-17 23:23:14 -07:00
datagram.c net-next: remove useless union keyword 2010-06-10 23:31:35 -07:00
devinet.c arp_notify: allow drivers to explicitly request a notification event. 2010-05-31 00:27:44 -07:00
esp4.c
fib_frontend.c ipv4: add LINUX_MIB_IPRPFILTER snmp counter 2010-06-03 03:18:19 -07:00
fib_hash.c
fib_lookup.h
fib_rules.c
fib_semantics.c
fib_trie.c net: Remove unnecessary returns from void function()s 2010-05-17 23:23:14 -07:00
icmp.c net-next: remove useless union keyword 2010-06-10 23:31:35 -07:00
igmp.c net-next: remove useless union keyword 2010-06-10 23:31:35 -07:00
inet_connection_sock.c net-next: remove useless union keyword 2010-06-10 23:31:35 -07:00
inet_diag.c
inet_fragment.c
inet_hashtables.c net: reserve ports for applications using fixed port numbers 2010-05-15 23:28:40 -07:00
inet_lro.c
inet_timewait_sock.c
inetpeer.c inetpeer: various changes 2010-06-14 23:13:08 -07:00
ip_forward.c net-next: remove useless union keyword 2010-06-10 23:31:35 -07:00
ip_fragment.c
ip_gre.c net-next: remove useless union keyword 2010-06-10 23:31:35 -07:00
ip_input.c net-next: remove useless union keyword 2010-06-10 23:31:35 -07:00
ip_options.c net: Remove unnecessary returns from void function()s 2010-05-17 23:23:14 -07:00
ip_output.c net-next: remove useless union keyword 2010-06-10 23:31:35 -07:00
ip_sockglue.c ip: ip_ra_control() rcu fix 2010-06-10 22:47:08 -07:00
ipcomp.c
ipconfig.c ipconfig: send host-name in DHCP requests 2010-06-02 07:05:03 -07:00
ipip.c net-next: remove useless union keyword 2010-06-10 23:31:35 -07:00
ipmr.c Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 2010-06-11 13:32:31 -07:00
Kconfig syncookies: remove Kconfig text line about disabled-by-default 2010-06-04 15:56:01 -07:00
Makefile
netfilter.c net-next: remove useless union keyword 2010-06-10 23:31:35 -07:00
proc.c ipv4: add LINUX_MIB_IPRPFILTER snmp counter 2010-06-03 03:18:19 -07:00
protocol.c
raw.c net-next: remove useless union keyword 2010-06-10 23:31:35 -07:00
route.c net-next: remove useless union keyword 2010-06-10 23:31:35 -07:00
syncookies.c net-next: remove useless union keyword 2010-06-10 23:31:35 -07:00
sysctl_net_ipv4.c net: reserve ports for applications using fixed port numbers 2010-05-15 23:28:40 -07:00
tcp_bic.c
tcp_cong.c
tcp_cubic.c
tcp_diag.c
tcp_highspeed.c
tcp_htcp.c
tcp_hybla.c TCP: tcp_hybla: Fix integer overflow in slow start increment 2010-06-02 07:15:48 -07:00
tcp_illinois.c
tcp_input.c net/ipv4/tcp_input.c: fix compilation breakage when FASTRETRANS_DEBUG > 1 2010-05-31 23:52:39 -07:00
tcp_ipv4.c net-next: remove useless union keyword 2010-06-10 23:31:35 -07:00
tcp_lp.c
tcp_minisocks.c
tcp_output.c tcp: tcp_synack_options() fix 2010-05-17 22:35:36 -07:00
tcp_probe.c
tcp_scalable.c
tcp_timer.c
tcp_vegas.c
tcp_vegas.h
tcp_veno.c
tcp_westwood.c
tcp_yeah.c
tcp.c tcp: tcp_md5_hash_skb_data() frag_list handling 2010-05-31 00:24:02 -07:00
tunnel4.c
udp_impl.h
udp.c net-next: remove useless union keyword 2010-06-10 23:31:35 -07:00
udplite.c
xfrm4_input.c net: Use ip_route_input_noref() in input path 2010-05-17 17:18:51 -07:00
xfrm4_mode_beet.c
xfrm4_mode_transport.c
xfrm4_mode_tunnel.c
xfrm4_output.c
xfrm4_policy.c net-next: remove useless union keyword 2010-06-10 23:31:35 -07:00
xfrm4_state.c
xfrm4_tunnel.c