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[NET]: use __read_mostly on kmem_cache_t , DEFINE_SNMP_STAT pointers

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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>
This commit is contained in:
Eric Dumazet
2005-08-26 12:05:31 -07:00
committed by David S. Miller
parent 29cb9f9c55
commit ba89966c19
29 changed files with 39 additions and 39 deletions
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6
net/sctp/protocol.c
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@@ -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);