From ba89966c1984513f4f2cc0a6c182266be44ddd03 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Fri, 26 Aug 2005 12:05:31 -0700 Subject: [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 Signed-off-by: David S. Miller --- net/sctp/protocol.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'net/sctp/protocol.c') diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c index 7d8ec652634..e7025be7769 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); -- cgit v1.2.3