lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

net: cacheline adjust struct inet_frag_queue

Browse Source 
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>
This commit is contained in:
Jesper Dangaard Brouer
2013-01-28 23:44:49 +00:00
committed by David S. Miller
parent 5f8e1e8b76
commit 6e34a8b37a
1 changed files with 5 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
include/net/inet_frag.h
View File

@@ -16,12 +16,11 @@ struct netns_frags {
}; };
struct inet_frag_queue { struct inet_frag_queue {
struct hlist_node list;
struct netns_frags *net;
struct list_head lru_list; /* lru list member */
spinlock_t lock; spinlock_t lock;
atomic_t refcnt;
struct timer_list timer; /* when will this queue expire? */ 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; /* list of received fragments */
struct sk_buff *fragments_tail; struct sk_buff *fragments_tail;
ktime_t stamp; ktime_t stamp;
@@ -34,6 +33,8 @@ struct inet_frag_queue {
#define INET_FRAG_LAST_IN 1 #define INET_FRAG_LAST_IN 1
u16 max_size; u16 max_size;
struct netns_frags *net;
}; };
#define INETFRAGS_HASHSZ 64 #define INETFRAGS_HASHSZ 64