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| author |   Jesper Dangaard Brouer <brouer@redhat.com> | 2013-01-28 23:44:49 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2013-01-29 13:36:23 -0500 |
| commit | 6e34a8b37aca63f109bf990d46131ee07206f5f1 (patch) | |
| tree | 2daf8bc157035e3493636eea48db3805a2a92f3f /include | |
| parent | net: cacheline adjust struct inet_frags for better frag performance (diff) | |
| download | linux-dev-6e34a8b37aca63f109bf990d46131ee07206f5f1.tar.xz linux-dev-6e34a8b37aca63f109bf990d46131ee07206f5f1.zip | |
net: cacheline adjust struct inet_frag_queue
Fragmentation code cacheline adjusting of struct inet_frag_queue.
Take advantage of the size of struct timer_list, and move all but
spinlock_t lock, below the timer struct. On 64-bit 'lru_list',
'list' and 'refcnt', fits exactly into the next cacheline, and a
new cacheline starts at 'fragments'.
The netns_frags *net pointer is moved to the end of the struct,
because its used in a compare, with "next/close-by" elements of
which this struct is embedded into.
Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/inet_frag.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/include/net/inet_frag.h b/include/net/inet_frag.h index 54c1de781c68..8e4c42523f59 100644 --- a/include/net/inet_frag.h +++ b/include/net/inet_frag.h @@ -16,12 +16,11 @@ struct netns_frags { }; struct inet_frag_queue { - struct hlist_node list; - struct netns_frags *net; - struct list_head lru_list; /* lru list member */ spinlock_t lock; - atomic_t refcnt; struct timer_list timer; /* when will this queue expire? */ + struct list_head lru_list; /* lru list member */ + struct hlist_node list; + atomic_t refcnt; struct sk_buff *fragments; /* list of received fragments */ struct sk_buff *fragments_tail; ktime_t stamp; @@ -34,6 +33,8 @@ struct inet_frag_queue { #define INET_FRAG_LAST_IN 1 u16 max_size; + + struct netns_frags *net; }; #define INETFRAGS_HASHSZ 64 |