commit 10da66f7552b3c7966c2f4f1f72009fb0b5539ec
author Eric Dumazet <eric.dumazet@gmail.com> Wed Oct 13 08:22:03 2010 +0000
committer David S. Miller <davem@davemloft.net> Sat Oct 16 11:13:23 2010 -0700
tree 517c39912a0aea9d4da3c3915c78e832dfbba855
parent 874ffa8f72444d6253d2669fed304875c128f86b

fib: avoid false sharing on fib_table_hash

While doing profile analysis, I found fib_hash_table was sometime in a
cache line shared by a possibly often written kernel structure.

(CONFIG_IP_ROUTE_MULTIPATH || !CONFIG_IPV6_MULTIPLE_TABLES)

It's hard to detect because not easily reproductible.

Make sure we allocate a full cache line to keep this shared in all cpus
caches.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>