diff options
| author | Octavian Purdila <opurdila@ixiacom.com> | 2010-12-13 12:44:07 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-12-16 14:04:44 -0800 |
| commit | 443457242beb6716b43db4d62fe148eab5515505 (patch) | |
| tree | 0dbcf7dbaa7c6be6ca84631f3e865cde3d6b59f2 /include/net/sch_generic.h | |
| parent | c6c8fea29769d998d94fcec9b9f14d4b52b349d3 (diff) | |
| download | op-kernel-dev-443457242beb6716b43db4d62fe148eab5515505.zip op-kernel-dev-443457242beb6716b43db4d62fe148eab5515505.tar.gz | |
net: factorize sync-rcu call in unregister_netdevice_many
Add dev_close_many and dev_deactivate_many to factorize another
sync-rcu operation on the netdevice unregister path.
$ modprobe dummy numdummies=10000
$ ip link set dev dummy* up
$ time rmmod dummy
Without the patch With the patch
real 0m 24.63s real 0m 5.15s
user 0m 0.00s user 0m 0.00s
sys 0m 6.05s sys 0m 5.14s
Signed-off-by: Octavian Purdila <opurdila@ixiacom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/sch_generic.h')
| -rw-r--r-- | include/net/sch_generic.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h index ea1f8a8..786cc39 100644 --- a/include/net/sch_generic.h +++ b/include/net/sch_generic.h @@ -321,6 +321,7 @@ extern void dev_init_scheduler(struct net_device *dev); extern void dev_shutdown(struct net_device *dev); extern void dev_activate(struct net_device *dev); extern void dev_deactivate(struct net_device *dev); +extern void dev_deactivate_many(struct list_head *head); extern struct Qdisc *dev_graft_qdisc(struct netdev_queue *dev_queue, struct Qdisc *qdisc); extern void qdisc_reset(struct Qdisc *qdisc); |
