Eric W. Biederman 575f4cd5a5 net: Use rcu lookups in inet_twsk_purge. ... While we are looking up entries to free there is no reason to take the lock in inet_twsk_purge. We have to drop locks and restart occassionally anyway so adding a few more in case we get on the wrong list because of a timewait move is no big deal. At the same time not taking the lock for long periods of time is much more polite to the rest of the users of the hash table. In my test configuration of killing 4k network namespaces this change causes 4k back to back runs of inet_twsk_purge on an empty hash table to go from roughly 20.7s to 3.3s, and the total time to destroy 4k network namespaces goes from roughly 44s to 3.3s. Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Acked-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2009-12-03 12:23:47 -08:00
..
9p	net: Move && and || to end of previous line	2009-11-29 16:55:45 -08:00
802	net: remove COMPAT_NET_DEV_OPS	2009-05-25 01:53:53 -07:00
8021q	net: Teach vlans to cleanup as a pernet subsystem	2009-12-02 22:10:24 -08:00
appletalk	net: use net_eq to compare nets	2009-11-25 15:14:13 -08:00
atm	net: use net_eq to compare nets	2009-11-25 15:14:13 -08:00
ax25	net: use net_eq to compare nets	2009-11-25 15:14:13 -08:00
bluetooth	net: Move && and || to end of previous line	2009-11-29 16:55:45 -08:00
bridge	net: Move && and || to end of previous line	2009-11-29 16:55:45 -08:00
can	net: Move && and || to end of previous line	2009-11-29 16:55:45 -08:00
core	net: Allow fib_rule_unregister to batch	2009-12-03 12:22:55 -08:00
dcb	net: Move && and || to end of previous line	2009-11-29 16:55:45 -08:00
dccp	TCPCT part 1a: add request_values parameter for sending SYNACK	2009-12-02 22:07:23 -08:00
decnet	net: Allow fib_rule_unregister to batch	2009-12-03 12:22:55 -08:00
dsa	netdev: convert pseudo-devices to netdev_tx_t	2009-09-01 01:13:07 -07:00
econet	net: use net_eq to compare nets	2009-11-25 15:14:13 -08:00
ethernet	remove deprecated and not used: print_mac()	2009-11-15 22:21:34 -08:00
ieee802154	net: use net_eq to compare nets	2009-11-25 15:14:13 -08:00
ipv4	net: Use rcu lookups in inet_twsk_purge.	2009-12-03 12:23:47 -08:00
ipv6	net: Allow fib_rule_unregister to batch	2009-12-03 12:22:55 -08:00
ipx	net: use net_eq to compare nets	2009-11-25 15:14:13 -08:00
irda	net: Move && and || to end of previous line	2009-11-29 16:55:45 -08:00
iucv	iucv: add work_queue cleanup for suspend	2009-11-13 20:46:58 -08:00
key	net: Simplify af_key pernet operations.	2009-12-01 16:15:54 -08:00
lapb	net: remove NET_RX_BAD and NET_RX_CN* defines	2009-07-05 19:15:35 -07:00
llc	net: use net_eq to compare nets	2009-11-25 15:14:13 -08:00
mac80211	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2009-12-01 22:13:38 -08:00
netfilter	net: Simplify conntrack_proto_gre pernet operations.	2009-12-01 16:15:55 -08:00
netlabel	net: rename skb->iif to skb->skb_iif	2009-11-20 15:35:04 -08:00
netlink	net: use net_eq to compare nets	2009-11-25 15:14:13 -08:00
netrom	net: use net_eq to compare nets	2009-11-25 15:14:13 -08:00
packet	net: Move && and || to end of previous line	2009-11-29 16:55:45 -08:00
phonet	net: Simplify phonet pernet operations.	2009-12-01 16:15:57 -08:00
rds	net: Move && and || to end of previous line	2009-11-29 16:55:45 -08:00
rfkill	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2009-11-29 00:57:15 -08:00
rose	net: Move && and || to end of previous line	2009-11-29 16:55:45 -08:00
rxrpc	net: use net_eq to compare nets	2009-11-25 15:14:13 -08:00
sched	net: Move && and || to end of previous line	2009-11-29 16:55:45 -08:00
sctp	sctp: fix sctp_setsockopt_autoclose compile warning	2009-12-02 01:16:49 -08:00
sunrpc	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2009-12-01 22:13:38 -08:00
tipc	net: Move && and || to end of previous line	2009-11-29 16:55:45 -08:00
unix	net: Move && and || to end of previous line	2009-11-29 16:55:45 -08:00
wanrouter	headers: smp_lock.h redux	2009-07-12 12:22:34 -07:00
wimax	net: Move && and || to end of previous line	2009-11-29 16:55:45 -08:00
wireless	net: Move && and || to end of previous line	2009-11-29 16:55:45 -08:00
x25	X25: Fix oops and refcnt problems from x25_dev_get	2009-11-29 00:25:02 -08:00
xfrm	net: Allow xfrm_user_net_exit to batch efficiently.	2009-12-03 12:22:03 -08:00
Kconfig	net/compat/wext: send different messages to compat tasks	2009-07-15 08:53:39 -07:00
Makefile	net: remove redundant sched/ in net/Makefile	2009-07-12 20:11:14 -07:00
TUNABLE	…
compat.c	net: compat_sys_recvmmsg user timespec arg can be NULL	2009-12-02 01:23:23 -08:00
nonet.c	…
socket.c	net: compat_mmsghdr must be used in sys_recvmmsg	2009-12-02 01:23:23 -08:00
sysctl_net.c	net: sysctl_net - use net_eq to compare nets	2009-03-16 16:23:30 +01:00