diff options
| author | Eric Dumazet <dada1@cosmosbay.com> | 2005-08-26 23:05:31 +0400 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2005-08-30 03:11:18 +0400 |
| commit | ba89966c1984513f4f2cc0a6c182266be44ddd03 (patch) | |
| tree | 6e5766fc5c287708c03e0a162531dfd4785b0703 /net/ipv4/ip_input.c | |
| parent | 29cb9f9c5502f6218cd3ea574efe46a5e55522d2 (diff) | |
| download | linux-ba89966c1984513f4f2cc0a6c182266be44ddd03.tar.xz | |
[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/ipv4/ip_input.c')
| -rw-r--r-- | net/ipv4/ip_input.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv4/ip_input.c b/net/ipv4/ip_input.c index 220a8b5920ea..473d0f2b2e0d 100644 --- a/net/ipv4/ip_input.c +++ b/net/ipv4/ip_input.c @@ -150,7 +150,7 @@ * SNMP management statistics */ -DEFINE_SNMP_STAT(struct ipstats_mib, ip_statistics); +DEFINE_SNMP_STAT(struct ipstats_mib, ip_statistics) __read_mostly; /* * Process Router Attention IP option |