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| author | Eric Dumazet <eric.dumazet@gmail.com> | 2009-11-05 11:06:40 +0100 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-11-25 13:49:49 -0500 |
| commit | efe117ab8114f47f317b4803e5bc0104420bcba2 (patch) | |
| tree | 25c06fcd2a56feb8831930043ce89b0700481035 /net | |
| parent | 4ba3eb034fb6fd1990ccc5a6d71d5abcda37b905 (diff) | |
| download | linux-stable-efe117ab8114f47f317b4803e5bc0104420bcba2.tar.gz linux-stable-efe117ab8114f47f317b4803e5bc0104420bcba2.tar.bz2 linux-stable-efe117ab8114f47f317b4803e5bc0104420bcba2.zip | |
mac80211: Speedup ieee80211_remove_interfaces()
Speedup ieee80211_remove_interfaces() by factorizing synchronize_rcu() calls
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Reviewed-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/mac80211/iface.c | 14 |
1 files changed, 5 insertions, 9 deletions
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c index 1bf12a26b45e..80c16f6e2af6 100644 --- a/net/mac80211/iface.c +++ b/net/mac80211/iface.c @@ -860,22 +860,18 @@ void ieee80211_if_remove(struct ieee80211_sub_if_data *sdata) void ieee80211_remove_interfaces(struct ieee80211_local *local) { struct ieee80211_sub_if_data *sdata, *tmp; + LIST_HEAD(unreg_list); ASSERT_RTNL(); + mutex_lock(&local->iflist_mtx); list_for_each_entry_safe(sdata, tmp, &local->interfaces, list) { - /* - * we cannot hold the iflist_mtx across unregister_netdevice, - * but we only need to hold it for list modifications to lock - * out readers since we're under the RTNL here as all other - * writers. - */ - mutex_lock(&local->iflist_mtx); list_del(&sdata->list); - mutex_unlock(&local->iflist_mtx); - unregister_netdevice(sdata->dev); + unregister_netdevice_queue(sdata->dev, &unreg_list); } + mutex_unlock(&local->iflist_mtx); + unregister_netdevice_many(&unreg_list); } static u32 ieee80211_idle_off(struct ieee80211_local *local, |