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(parent: e0c5567) | patch
net: Introduce dev_get_by_index_rcu()
authorEric Dumazet <eric.dumazet@gmail.com>
Mon, 19 Oct 2009 19:18:49 +0000 (19:18 +0000)
committerDavid S. Miller <davem@davemloft.net>
Thu, 29 Oct 2009 08:42:55 +0000 (01:42 -0700)
commitfb699dfd426a189fe33b91586c15176a75c8aed0
treec90a8aadc10ac9a9e7b67b2d36ce61853917e3batree | snapshot (tar.gz zip)
parente0c5567d06ecf7777b6c46f4d933a0a6e09a44f3commit | diff
net: Introduce dev_get_by_index_rcu()

Some workloads hit dev_base_lock rwlock pretty hard.
We can use RCU lookups to avoid touching this rwlock.

netdevices are already freed after a RCU grace period, so this patch
adds no penalty at device dismantle time.

dev_ifname() converted to dev_get_by_index_rcu()

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/linux/netdevice.h diff | blob | blame | history
net/core/dev.c diff | blob | blame | history
Motorola kernel-slsi