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| author | Daniel Borkmann <dborkman@redhat.com> | 2013-08-26 16:34:00 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-08-29 14:55:54 -0400 |
| commit | 76bfd8984430be5b19727d09f6ab5e1d7a247f8c (patch) | |
| tree | a41d90d3aa24724ada4945fca3085dfeab9bef4b /include/net/sctp | |
| parent | 03536cc3ad611f29a35803d37a44414b823135c3 (diff) | |
| download | linux-76bfd8984430be5b19727d09f6ab5e1d7a247f8c.tar.bz2 | |
net: sctp: reorder sctp_globals to reduce cacheline usage
Reduce cacheline usage from 2 to 1 cacheline for sctp_globals structure. By
reordering elements, we can close gaps and simply achieve the following:
Current situation:
/* size: 80, cachelines: 2, members: 10 */
/* sum members: 57, holes: 4, sum holes: 16 */
/* padding: 7 */
/* last cacheline: 16 bytes */
Afterwards:
/* size: 64, cachelines: 1, members: 10 */
/* padding: 7 */
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/sctp')
| -rw-r--r-- | include/net/sctp/structs.h | 20 |
1 files changed, 9 insertions, 11 deletions
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h index 422db6cc3214..2174d8da0770 100644 --- a/include/net/sctp/structs.h +++ b/include/net/sctp/structs.h @@ -113,29 +113,27 @@ struct sctp_hashbucket { /* The SCTP globals structure. */ extern struct sctp_globals { - /* The following variables are implementation specific. */ - - /* Default initialization values to be applied to new associations. */ - __u16 max_instreams; - __u16 max_outstreams; - /* This is a list of groups of functions for each address * family that we support. */ struct list_head address_families; /* This is the hash of all endpoints. */ - int ep_hashsize; struct sctp_hashbucket *ep_hashtable; - /* This is the hash of all associations. */ - int assoc_hashsize; struct sctp_hashbucket *assoc_hashtable; - /* This is the sctp port control hash. */ - int port_hashsize; struct sctp_bind_hashbucket *port_hashtable; + /* Sizes of above hashtables. */ + int ep_hashsize; + int assoc_hashsize; + int port_hashsize; + + /* Default initialization values to be applied to new associations. */ + __u16 max_instreams; + __u16 max_outstreams; + /* Flag to indicate whether computing and verifying checksum * is disabled. */ bool checksum_disable; |