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Eric Dumazet fa438ccfdf [NET]: Keep sk_backlog near sk_lock 
sk_backlog is a critical field of struct sock. (known famous words)

It is (ab)used in hot paths, in particular in release_sock(), tcp_recvmsg(),
tcp_v4_rcv(), sk_receive_skb().

It really makes sense to place it next to sk_lock, because sk_backlog is only
used after sk_lock locked (and thus memory cache line in L1 cache). This
should reduce cache misses and sk_lock acquisition time.

(In theory, we could only move the head pointer near sk_lock, and leaving tail
far away, because 'tail' is normally not so hot, but keep it simple :) )

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:23:27 -07:00
..
bluetooth [PATCH] hci endianness annotations 2006-12-13 09:05:52 -08:00
irda [IRDA] net/irda/: proper prototypes 2007-02-26 11:42:43 -08:00
iucv [S390]: Add AF_IUCV socket support 2007-02-08 13:51:54 -08:00
netfilter [NETFILTER]: conntrack: fix {nf,ip}_ct_iterate_cleanup endless loops 2007-03-05 13:25:18 -08:00
sctp [SCTP]: Reset some transport and association variables on restart 2007-03-20 00:09:45 -07:00
tc_act [PKT_SCHED]: Kill pkt_act.h inlining. 2006-09-22 14:55:10 -07:00
tipc [TIPC]: endianness annotations 2006-12-02 21:21:08 -08:00
act_api.h [PKT_SCHED]: Kill pkt_act.h inlining. 2006-09-22 14:55:10 -07:00
addrconf.h [IPV6]: Misc endianness annotations. 2006-12-02 21:22:52 -08:00
af_unix.h [AF_UNIX]: Kernel memory leak fix for af_unix datagram getpeersec patch 2006-08-02 14:12:06 -07:00
ah.h [IPSEC]: Use HMAC template and hash interface 2006-09-21 11:46:18 +10:00
arp.h [IPV6]: Assorted trivial endianness annotations. 2006-12-02 21:22:50 -08:00
atmclip.h [ATM]: Annotations. 2006-12-02 21:22:55 -08:00
ax25.h [PATCH] mark struct file_operations const 1 2007-02-12 09:48:44 -08:00
checksum.h [NET]: Make mangling a checksum (0 -> 0xffff on the wire) explicit. 2006-12-02 21:23:39 -08:00
cipso_ipv4.h NetLabel: use the correct CIPSOv4 MLS label limits 2006-12-02 21:24:12 -08:00
compat.h Merge git://git.infradead.org/hdrcleanup-2.6 2006-06-20 15:10:08 -07:00
datalink.h [NET]: Kill skb->real_dev 2005-08-29 15:32:25 -07:00
dn_dev.h [DECnet]: Endian annotation and fixes for DECnet. 2006-03-20 22:42:39 -08:00
dn_fib.h [DECNET]: cleanups 2006-09-22 14:54:40 -07:00
dn_neigh.h [DECnet]: Endian annotation and fixes for DECnet. 2006-03-20 22:42:39 -08:00
dn_nsp.h [DECnet]: Endian annotation and fixes for DECnet. 2006-03-20 22:42:39 -08:00
dn_route.h [DECNET]: Convert decnet route to use the new dst_entry 'next' pointer 2007-02-10 23:20:43 -08:00
dn.h [NET]: Reduce sizeof(struct flowi) by 20 bytes. 2006-10-21 20:24:01 -07:00
dsfield.h [NET]: IP header modifier helpers annotations. 2006-12-02 21:23:40 -08:00
dst.h [NET]: Reorder fields of struct dst_entry 2007-02-10 23:20:45 -08:00
esp.h [IPSEC] esp: Defer output IV initialization to first use. 2006-09-22 15:17:35 -07:00
fib_rules.h [NET]: Fix fib_rules compatibility breakage 2007-03-25 18:48:00 -07:00
flow.h [NET]: Rethink mark field in struct flowi 2006-12-02 21:21:39 -08:00
gen_stats.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
genetlink.h [GENETLINK]: Add cmd dump completion. 2006-12-02 21:32:09 -08:00
icmp.h [IPV4]: icmp_send() annotation 2006-09-28 18:01:06 -07:00
ieee80211_crypt.h [PATCH] ieee80211: Add TKIP crypt->build_iv 2006-01-27 17:08:07 -05:00
ieee80211_radiotap.h [PATCH] ieee80211: Added ieee80211_radiotap.h 2005-09-21 23:03:55 -04:00
ieee80211.h [PATCH] ieee80211: WLAN_GET_SEQ_SEQ fix (select correct region) 2007-01-02 20:56:26 -05:00
ieee80211softmac_wx.h [PATCH] softmac: add SIOCSIWMLME 2006-04-24 16:15:58 -04:00
ieee80211softmac.h WorkStruct: make allyesconfig 2006-11-22 14:57:56 +00:00
if_inet6.h [IPV6]: Per-interface statistics support. 2006-12-02 21:22:08 -08:00
inet6_connection_sock.h [TCP]: Restore SKB socket owner setting in tcp_transmit_skb(). 2007-01-26 01:04:55 -08:00
inet6_hashtables.h [IPV6]: annotate inet6_hashtables 2006-12-02 21:21:10 -08:00
inet_common.h [NET]: move struct proto_ops to const 2006-01-03 13:11:15 -08:00
inet_connection_sock.h [TCP]: Restore SKB socket owner setting in tcp_transmit_skb(). 2007-01-26 01:04:55 -08:00
inet_ecn.h [NET]: IP header modifier helpers annotations. 2006-12-02 21:23:40 -08:00
inet_hashtables.h [NET]: change layout of ehash table 2007-02-08 14:16:46 -08:00
inet_sock.h [IPV4]: annotate inet_lookup() and friends 2006-09-28 18:02:26 -07:00
inet_timewait_sock.h [INET]: twcal_jiffie should be unsigned long, not int 2007-03-05 13:32:48 -08:00
inetpeer.h [IPV4] inet_peer: Group together avl_left, avl_right, v4daddr to speedup lookups on some CPUS 2006-10-20 00:28:35 -07:00
ip6_checksum.h [IPV6]: Dumb typo in generic csum_ipv6_magic() 2006-12-22 11:12:07 -08:00
ip6_fib.h [IPV6]: Fix routing round-robin locking. 2007-03-25 18:48:05 -07:00
ip6_route.h [IPV6]: Misc endianness annotations. 2006-12-02 21:22:52 -08:00
ip6_tunnel.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ip_fib.h [IPV4] nl_fib_lookup: Rename fl_fwmark to fl_mark 2006-12-02 21:21:40 -08:00
ip_mp_alg.h [NET]: Rethink mark field in struct flowi 2006-12-02 21:21:39 -08:00
ip_vs.h [NET]: ipvs checksum annotations. 2006-12-02 21:23:41 -08:00
ip.h [TCP]: Restore SKB socket owner setting in tcp_transmit_skb(). 2007-01-26 01:04:55 -08:00
ipcomp.h [CRYPTO] users: Use crypto_comp and crypto_has_* 2006-09-21 11:46:22 +10:00
ipconfig.h [NET]: ipconfig and nfsroot annotations 2006-12-02 21:21:09 -08:00
ipip.h [IPV6] net/ipv6/sit.c: make 2 functions static 2006-12-02 21:26:15 -08:00
ipv6.h [IPV6]: __ipv6_addr_diff() annotations and cleanup. 2006-12-02 21:22:53 -08:00
ipx.h [IPX]: Annotate and fix IPX checksum 2006-11-05 14:11:25 -08:00
iw_handler.h [PATCH] WE-22 : prevent information leak on 64 bit 2007-03-27 14:10:26 -04:00
lapb.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
llc_c_ac.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
llc_c_ev.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
llc_c_st.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
llc_conn.h [PATCH] gfp flags annotations - part 1 2005-10-08 15:00:57 -07:00
llc_if.h [LLC]: add multicast support for datagrams 2006-06-17 21:26:08 -07:00
llc_pdu.h [LLC]: anotations 2006-12-02 21:21:23 -08:00
llc_s_ac.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
llc_s_ev.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
llc_s_st.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
llc_sap.h [LLC]: Fix the accept path 2005-09-22 07:57:21 -03:00
llc.h [LLC]: llc_mac_hdr_init const arguments 2006-03-20 22:59:36 -08:00
mip6.h [IPV6] MIP6: Add receiving mobility header functions through raw socket. 2006-09-22 15:07:01 -07:00
ndisc.h [IPV6]: Misc endianness annotations. 2006-12-02 21:22:52 -08:00
neighbour.h [NET]: Fix neighbour destructor handling. 2007-03-25 18:48:01 -07:00
netdma.h Remove all inclusions of <linux/config.h> 2006-10-04 03:38:54 -04:00
netevent.h [NET]: Network Event Notifier Mechanism. 2006-08-02 13:38:20 -07:00
netlabel.h NetLabel: convert to an extensibile/sparse category bitmap 2006-12-02 21:31:36 -08:00
netlink.h [PATCH] severing skbuff.h -> mm.h 2006-12-04 02:00:34 -05:00
netrom.h [PATCH] mark struct file_operations const 1 2007-02-12 09:48:44 -08:00
nexthop.h [IPv4]: FIB configuration using struct fib_config 2006-09-22 14:55:04 -07:00
p8022.h [NET]: Fix sparse warnings 2005-08-29 16:01:32 -07:00
pkt_cls.h [IFB]: Fix crash on input device removal 2007-03-29 11:46:52 -07:00
pkt_sched.h [PKT_SCHED]: Fix regression in PSCHED_TADD{,2}. 2006-07-24 12:44:23 -07:00
protocol.h [INET]: Change protocol field in struct inet_protosw to u16 2006-12-02 21:30:55 -08:00
psnap.h [NET]: Kill skb->real_dev 2005-08-29 15:32:25 -07:00
raw.h Merge git://git.infradead.org/hdrcleanup-2.6 2006-06-20 15:10:08 -07:00
rawv6.h [IPV6]: 'info' argument of ipv6 ->err_handler() is net-endian 2006-12-02 21:21:12 -08:00
red.h [PKT_SCHED] RED: Fix overflow in calculation of queue average 2006-08-04 22:59:51 -07:00
request_sock.h [PATCH] slab: remove kmem_cache_t 2006-12-07 08:39:25 -08:00
rose.h [PATCH] mark struct file_operations const 1 2007-02-12 09:48:44 -08:00
route.h [IPV4]: Convert ipv4 route to use the new dst_entry 'next' pointer 2007-02-10 23:20:38 -08:00
sch_generic.h [NET_SCHED]: Fix endless loops caused by inaccurate qlen counters (part 1) 2006-12-02 21:31:42 -08:00
scm.h [AF_UNIX]: Kernel memory leak fix for af_unix datagram getpeersec patch 2006-08-02 14:12:06 -07:00
slhc_vj.h [NET]: Remove __ARGS from include/net/slhc_vj.h 2005-07-05 15:12:04 -07:00
snmp.h [SCTP]: Extend /proc/net/sctp/snmp to provide more statistics. 2006-09-22 14:55:16 -07:00
sock.h [NET]: Keep sk_backlog near sk_lock 2007-04-25 22:23:27 -07:00
syncppp.h [PATCH] drivers/net/wan/: possible cleanups 2005-09-14 08:36:54 -04:00
tcp_ecn.h [IPV6]: Added GSO support for TCPv6 2006-06-30 14:12:10 -07:00
tcp_states.h [TCP]: Move the TCPF_ enum to tcp_states.h 2006-01-03 13:10:57 -08:00
tcp.h [TCP]: Add two new spurious RTO responses to FRTO 2007-04-25 22:23:23 -07:00
timewait_sock.h [PATCH] slab: remove kmem_cache_t 2006-12-07 08:39:25 -08:00
transp_v6.h [NET]: Supporting UDP-Lite (RFC 3828) in Linux 2006-12-02 21:22:46 -08:00
udp.h [PATCH] severing skbuff.h -> poll.h 2006-12-04 02:00:31 -05:00
udplite.h [NET]: Fix assorted misannotations (from md5 and udplite merges). 2006-12-02 21:27:16 -08:00
x25.h [X.25]: Adds /proc/sys/net/x25/x25_forward to control forwarding. 2007-02-08 13:34:36 -08:00
x25device.h [X25]: Restore skb->dev setting in x25_type_trans(). 2006-04-09 22:37:18 -07:00
xfrm.h [IPSEC]: xfrm_policy delete security check misplaced 2007-03-07 16:08:09 -08:00