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| author | Eric Dumazet <dada1@cosmosbay.com> | 2005-08-26 12:05:31 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2005-08-29 16:11:18 -0700 |
| commit | ba89966c1984513f4f2cc0a6c182266be44ddd03 (patch) | |
| tree | 6e5766fc5c287708c03e0a162531dfd4785b0703 /net/sctp/protocol.c | |
| parent | 29cb9f9c5502f6218cd3ea574efe46a5e55522d2 (diff) | |
| download | blackbird-op-linux-ba89966c1984513f4f2cc0a6c182266be44ddd03.tar.gz blackbird-op-linux-ba89966c1984513f4f2cc0a6c182266be44ddd03.zip | |
[NET]: use __read_mostly on kmem_cache_t , DEFINE_SNMP_STAT pointers
This patch puts mostly read only data in the right section
(read_mostly), to help sharing of these data between CPUS without
memory ping pongs.
On one of my production machine, tcp_statistics was sitting in a
heavily modified cache line, so *every* SNMP update had to force a
reload.
Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/protocol.c')
| -rw-r--r-- | net/sctp/protocol.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c index 7d8ec6526347..e7025be77691 100644 --- a/net/sctp/protocol.c +++ b/net/sctp/protocol.c @@ -62,7 +62,7 @@ /* Global data structures. */ struct sctp_globals sctp_globals; struct proc_dir_entry *proc_net_sctp; -DEFINE_SNMP_STAT(struct sctp_mib, sctp_statistics); +DEFINE_SNMP_STAT(struct sctp_mib, sctp_statistics) __read_mostly; struct idr sctp_assocs_id; DEFINE_SPINLOCK(sctp_assocs_id_lock); @@ -78,8 +78,8 @@ static struct sctp_pf *sctp_pf_inet_specific; static struct sctp_af *sctp_af_v4_specific; static struct sctp_af *sctp_af_v6_specific; -kmem_cache_t *sctp_chunk_cachep; -kmem_cache_t *sctp_bucket_cachep; +kmem_cache_t *sctp_chunk_cachep __read_mostly; +kmem_cache_t *sctp_bucket_cachep __read_mostly; extern int sctp_snmp_proc_init(void); extern int sctp_snmp_proc_exit(void); |
