[NET]: Force a cache line split in hh_cache in SMP.

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hh_lock was converted from rwlock to seqlock by Stephen.

To have a 100% benefit of this change, I suggest to place read mostly fields
of hh_cache in a separate cache line, because hh_refcnt may be changed quite
frequently on some busy machines.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Eric Dumazet 2006-12-08 00:08:43 -08:00 • committed by David S. Miller

parent 47bbec0282

commit f0490980a1

1 changed files with 8 additions and 1 deletions

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9

include/linux/netdevice.h

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