From: Jesper Dangaard Brouer Date: Mon, 28 Jan 2013 23:44:49 +0000 (+0000) Subject: net: cacheline adjust struct inet_frag_queue X-Git-Tag: v4.14-rc1~10324^2~232^2~3 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=6e34a8b37aca63f109bf990d46131ee07206f5f1;p=platform%2Fkernel%2Flinux-rpi.git 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 Signed-off-by: David S. Miller --- 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