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s390: use RCU to walk list of network devices

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This is similar to other cases where for_each_netdev_rcu
can be used when gathering information.

By inspection, don't have platform or cross-build environment
to validate.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
stephen hemminger 2009-11-10 07:54:52 +00:00 committed by David S. Miller
parent f1e9016da6
commit e576b9ef41
1 changed files with 5 additions and 3 deletions
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8
arch/s390/appldata/appldata_net_sum.c
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@ -83,8 +83,9 @@ static void appldata_get_net_sum_data(void *data)
rx_dropped = 0;
tx_dropped = 0;
collisions = 0;
read_lock(&dev_base_lock);
for_each_netdev(&init_net, dev) {
rcu_read_lock();
for_each_netdev_rcu(&init_net, dev) {
const struct net_device_stats *stats = dev_get_stats(dev);
rx_packets += stats->rx_packets;
@ -98,7 +99,8 @@ static void appldata_get_net_sum_data(void *data)
collisions += stats->collisions;
i++;
}
read_unlock(&dev_base_lock);
rcu_read_unlock();
net_data->nr_interfaces = i;
net_data->rx_packets = rx_packets;
net_data->tx_packets = tx_packets;