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bb401caefe
linux/net
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Eric Dumazet bb401caefe ipv6: speedup ipv6 tunnels dismantle 
Implement exit_batch() method to dismantle more devices
per round.

(rtnl_lock() ...
 unregister_netdevice_many() ...
 rtnl_unlock())

Tested:
$ cat add_del_unshare.sh
for i in `seq 1 40`
do
 (for j in `seq 1 100` ; do unshare -n /bin/true >/dev/null ; done) &
done
wait ; grep net_namespace /proc/slabinfo

Before patch :
$ time ./add_del_unshare.sh
net_namespace        110    267   5504    1    2 : tunables    8    4    0 : slabdata    110    267      0

real    3m25.292s
user    0m0.644s
sys     0m40.153s

After patch:

$ time ./add_del_unshare.sh
net_namespace        126    282   5504    1    2 : tunables    8    4    0 : slabdata    126    282      0

real	1m38.965s
user	0m0.688s
sys	0m37.017s

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-19 16:32:23 -07:00
..
6lowpan
9p net/9p: switch p9_fd_read to kernel_write 2017-09-04 19:05:16 -04:00
802
8021q
appletalk
atm net: atm: make atmdev_ops const 2017-08-09 22:43:50 -07:00
ax25 net, ax25: convert ax25_cb.refcount from atomic_t to refcount_t 2017-07-04 22:35:19 +01:00
batman-adv Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-08-09 16:28:45 -07:00
bluetooth Bluetooth: Properly check L2CAP config option output buffer length 2017-09-09 17:56:05 -07:00
bpf
bridge bridge: switchdev: Use an helper to clear forward mark 2017-09-05 11:51:47 -07:00
caif net: convert sock.sk_wmem_alloc from atomic_t to refcount_t 2017-07-01 07:39:08 -07:00
can rtnetlink: make rtnl_register accept a flags parameter 2017-08-09 16:57:38 -07:00
ceph ceph: more accurate statfs 2017-09-06 19:56:49 +02:00
core net_sched: gen_estimator: fix scaling error in bytes/packets samples 2017-09-13 13:30:53 -07:00
dcb rtnetlink: make rtnl_register accept a flags parameter 2017-08-09 16:57:38 -07:00
dccp net: dccp: Add handling of IPV6_PKTOPTIONS to dccp_v6_do_rcv() 2017-08-31 11:43:47 -07:00
decnet Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next 2017-09-03 17:08:42 -07:00
dns_resolver
dsa net: dsa: move master ethtool code 2017-09-19 16:04:23 -07:00
ethernet
hsr net/hsr: Check skb_put_padto() return value 2017-08-22 13:40:23 -07:00
ieee802154 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-09-05 20:03:35 -07:00
ife
ipv4 tcp: batch tcp_net_metrics_exit 2017-09-19 16:32:23 -07:00
ipv6 ipv6: speedup ipv6 tunnels dismantle 2017-09-19 16:32:23 -07:00
ipx net, ipx: convert ipx_route.refcnt from atomic_t to refcount_t 2017-07-04 22:35:17 +01:00
iucv iucv: Convert sk_wmem_alloc accesses to refcount_t. 2017-07-03 02:31:22 -07:00
kcm Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-09-01 17:42:05 -07:00
key Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-08-15 20:23:23 -07:00
l2tp l2tp: pass tunnel pointer to ->session_create() 2017-09-03 11:04:21 -07:00
l3mdev
lapb net, lapb: convert lapb_cb.refcnt from atomic_t to refcount_t 2017-07-04 22:35:16 +01:00
llc net, llc: convert llc_sap.refcnt from atomic_t to refcount_t 2017-07-04 22:35:15 +01:00
mac80211 mac80211: fix deadlock in driver-managed RX BA session start 2017-09-06 15:22:02 +02:00
mac802154
mpls rtnetlink: make rtnl_register accept a flags parameter 2017-08-09 16:57:38 -07:00
ncsi net/ncsi: fix ncsi_vlan_rx_{add,kill}_vid references 2017-09-05 09:11:45 -07:00
netfilter netfilter: xt_hashlimit: fix build error caused by 64bit division 2017-09-08 18:55:53 +02:00
netlabel
netlink netlink: access nlk groups safely in netlink bind and getname 2017-09-06 21:22:54 -07:00
netrom net, netrom: convert nr_node.refcount from atomic_t to refcount_t 2017-07-04 22:35:17 +01:00
nfc
nsh nsh: add GSO support 2017-08-29 15:16:52 -07:00
openvswitch openvswitch: Fix an error handling path in 'ovs_nla_init_match_and_action()' 2017-09-12 20:37:31 -07:00
packet Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-09-01 17:42:05 -07:00
phonet rtnetlink: make rtnl_register accept a flags parameter 2017-08-09 16:57:38 -07:00
psample
qrtr rtnetlink: make rtnl_register accept a flags parameter 2017-08-09 16:57:38 -07:00
rds rds: Fix incorrect statistics counting 2017-09-07 20:07:13 -07:00
rfkill
rose
rxrpc rxrpc: Make service connection lookup always check for retry 2017-09-05 14:39:17 -07:00
sched net_sched: no need to free qdisc in RCU callback 2017-09-19 16:30:03 -07:00
sctp sctp: do not mark sk dumped when inet_sctp_diag_fill returns err 2017-09-15 14:51:15 -07:00
smc net/smc: synchronize buffer usage with device 2017-07-29 11:22:58 -07:00
strparser strparser: initialize all callbacks 2017-08-24 21:57:50 -07:00
sunrpc NFS client updates for Linux 4.14 2017-09-11 22:01:44 -07:00
switchdev net: switchdev: Remove bridge bypass support from switchdev 2017-08-07 14:48:48 -07:00
tipc tipc: remove unnecessary call to dev_net() 2017-09-06 21:25:52 -07:00
tls tls: make tls_sw_free_resources static 2017-09-14 09:55:21 -07:00
unix Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-08-21 17:06:42 -07:00
vmw_vsock vsock: vmci: Remove unneeded linux/miscdevice.h include 2017-09-19 13:51:57 -07:00
wimax
wireless cfg80211: honor NL80211_RRF_NO_HT40{MINUS,PLUS} 2017-09-06 12:56:31 +02:00
x25 X25: constify null_x25_address 2017-08-03 09:13:51 -07:00
xfrm Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-09-01 17:42:05 -07:00
compat.c get_compat_bpf_fprog(): don't copyin field-by-field 2017-07-04 13:14:34 -04:00
Kconfig net: Remove CONFIG_NETFILTER_DEBUG and _ASSERT() macros. 2017-09-04 13:25:20 +02:00
Makefile nsh: add GSO support 2017-08-29 15:16:52 -07:00
socket.c net: fixes for skb_send_sock 2017-08-16 11:27:52 -07:00
sysctl_net.c