net: cacheline adjust struct netns_frags for better frag performance

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This small cacheline adjustment of struct netns_frags improves
performance significantly for the fragmentation code.

Struct members 'lru_list' and 'mem' are both hot elements, and it
hurts performance, due to cacheline bouncing at every call point,
when they share a cacheline.  Also notice, how mem is placed
together with 'high_thresh' and 'low_thresh', as they are used in
the compare operations together.

Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Jesper Dangaard Brouer 2013-01-28 23:44:14 +00:00 • committed by David S. Miller

parent 656a05c899

commit cd39a7890a

1 changed files with 4 additions and 1 deletions

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include/net/inet_frag.h

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