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authorEric Dumazet <dada1@cosmosbay.com>2005-08-26 12:05:31 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2005-08-29 16:11:18 -0700
commitba89966c1984513f4f2cc0a6c182266be44ddd03 (patch)
tree6e5766fc5c287708c03e0a162531dfd4785b0703 /net/sctp
parent29cb9f9c5502f6218cd3ea574efe46a5e55522d2 (diff)
downloadop-kernel-dev-ba89966c1984513f4f2cc0a6c182266be44ddd03.zip
op-kernel-dev-ba89966c1984513f4f2cc0a6c182266be44ddd03.tar.gz
[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')
-rw-r--r--net/sctp/protocol.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index 7d8ec65..e7025be 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);
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