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| author | Eric Dumazet <eric.dumazet@gmail.com> | 2010-10-11 12:20:54 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-10-11 16:09:14 -0700 |
| commit | e37ef961e50d74f55e9edb48e54dd2e7963aad39 (patch) | |
| tree | ac069f1c0fa4eaf54b28d712d05f7e483d165b19 /include/net/neighbour.h | |
| parent | fc66f95c68b6d4535a0ea2ea15d5cf626e310956 (diff) | |
| download | linux-e37ef961e50d74f55e9edb48e54dd2e7963aad39.tar.gz | |
neigh: reorder struct neighbour fields
Le mardi 12 octobre 2010 à 00:02 +0200, Eric Dumazet a écrit : > Here is the followup patch. > > Thanks ! > Oops, this was an old version, the up2date ones also took care of "used" field. I guess its time for a sleep, sorry again. [PATCH net-next V2] neigh: reorder struct neighbour fields (refcnt) and (ha_lock, ha, used, dev, output, ops, primary_key) should be placed on a separate cache lines. refcnt can be often written, while other fields are mostly read. This gave me good result on stress test : before: real 0m45.570s user 0m15.525s sys 9m56.669s After: real 0m41.841s user 0m15.261s sys 8m45.949s Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/neighbour.h')
| -rw-r--r-- | include/net/neighbour.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/include/net/neighbour.h b/include/net/neighbour.h index f04e7a2522c5..55590ab16b3e 100644 --- a/include/net/neighbour.h +++ b/include/net/neighbour.h @@ -94,8 +94,6 @@ struct neighbour { struct neighbour __rcu *next; struct neigh_table *tbl; struct neigh_parms *parms; - struct net_device *dev; - unsigned long used; unsigned long confirmed; unsigned long updated; __u8 flags; @@ -103,16 +101,18 @@ struct neighbour { __u8 type; __u8 dead; atomic_t refcnt; + struct sk_buff_head arp_queue; + struct timer_list timer; + unsigned long used; atomic_t probes; rwlock_t lock; seqlock_t ha_lock; unsigned char ha[ALIGN(MAX_ADDR_LEN, sizeof(unsigned long))]; struct hh_cache *hh; int (*output)(struct sk_buff *skb); - struct sk_buff_head arp_queue; - struct timer_list timer; const struct neigh_ops *ops; struct rcu_head rcu; + struct net_device *dev; u8 primary_key[0]; }; |