| commit | 72c9528bab94cc052d00ce241b8e85f5d71e45f0 | [log] [tgz] |
|---|---|---|
| author | Eric Dumazet <eric.dumazet@gmail.com> | Fri Oct 30 07:11:27 2009 +0000 |
| committer | David S. Miller <davem@davemloft.net> | Sun Nov 01 23:55:08 2009 -0800 |
| tree | fcec7a40e0242e659474a4d9f501d9213225aa55 | |
| parent | 68d8287ce1e1da3c99881385a93e74f68c454fc2 [diff] |
net: Introduce dev_get_by_name_rcu() Some workloads hit dev_base_lock rwlock pretty hard. We can use RCU lookups to avoid touching this rwlock (and avoid touching netdevice refcount) netdevices are already freed after a RCU grace period, so this patch adds no penalty at device dismantle time. However, it adds a synchronize_rcu() call in dev_change_name() Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>