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| author | Eric Dumazet <eric.dumazet@gmail.com> | 2010-10-13 08:22:03 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-10-16 11:13:23 -0700 |
| commit | 10da66f7552b3c7966c2f4f1f72009fb0b5539ec (patch) | |
| tree | 517c39912a0aea9d4da3c3915c78e832dfbba855 /README | |
| parent | 874ffa8f72444d6253d2669fed304875c128f86b (diff) | |
| download | linux-10da66f7552b3c7966c2f4f1f72009fb0b5539ec.tar.bz2 | |
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>
Diffstat (limited to 'README')
0 files changed, 0 insertions, 0 deletions