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(parent: c0c04c2) | patch
neigh: reorder struct neighbour
authorEric Dumazet <eric.dumazet@gmail.com>
Thu, 11 Nov 2010 06:57:19 +0000 (06:57 +0000)
committerDavid S. Miller <davem@davemloft.net>
Thu, 11 Nov 2010 18:29:40 +0000 (10:29 -0800)
commit46b13fc5c0f239f36e84665c73087d5fa86bfd86
tree435ef8301a89c04f56b305b219ddcece068bb273tree | snapshot (tar.gz zip)
parentc0c04c2a89cf6363da2940da59afd2e30001b991commit | diff
neigh: reorder struct neighbour

It is important to move nud_state outside of the often modified cache
line (because of refcnt), to reduce false sharing in neigh_event_send()

This is a followup of commit 0ed8ddf4045f (neigh: Protect neigh->ha[]
with a seqlock)

This gives a 7% speedup on routing test with IP route cache disabled.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
include/net/neighbour.h diff | blob | blame | history