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| author | Eric Dumazet <eric.dumazet@gmail.com> | 2009-10-27 07:07:16 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-10-28 02:22:09 -0700 |
| commit | eef6dd65e331d6e91a39b90344c705bbcbe0825e (patch) | |
| tree | 6dd95aa32b9b57020a66e99380a4323b5a28d511 | |
| parent | 0694c4c016df34c718b9f9ef6ba5aca2e178163a (diff) | |
| download | talos-obmc-linux-eef6dd65e331d6e91a39b90344c705bbcbe0825e.tar.gz talos-obmc-linux-eef6dd65e331d6e91a39b90344c705bbcbe0825e.zip | |
gre: Optimize multiple unregistration
Speedup module unloading by factorizing synchronize_rcu() calls
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | net/ipv4/ip_gre.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index 40f043915235..a77807d449e3 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -1290,16 +1290,19 @@ static const struct net_protocol ipgre_protocol = { .netns_ok = 1, }; -static void ipgre_destroy_tunnels(struct ipgre_net *ign) +static void ipgre_destroy_tunnels(struct ipgre_net *ign, struct list_head *head) { int prio; for (prio = 0; prio < 4; prio++) { int h; for (h = 0; h < HASH_SIZE; h++) { - struct ip_tunnel *t; - while ((t = ign->tunnels[prio][h]) != NULL) - unregister_netdevice(t->dev); + struct ip_tunnel *t = ign->tunnels[prio][h]; + + while (t != NULL) { + unregister_netdevice_queue(t->dev, head); + t = t->next; + } } } } @@ -1347,10 +1350,12 @@ err_alloc: static void ipgre_exit_net(struct net *net) { struct ipgre_net *ign; + LIST_HEAD(list); ign = net_generic(net, ipgre_net_id); rtnl_lock(); - ipgre_destroy_tunnels(ign); + ipgre_destroy_tunnels(ign, &list); + unregister_netdevice_many(&list); rtnl_unlock(); kfree(ign); } |
