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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/ipv6/icmp.c
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/ipv6/icmp.c')
-rw-r--r--net/ipv6/icmp.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c
index ff685f2..5176fc6 100644
--- a/net/ipv6/icmp.c
+++ b/net/ipv6/icmp.c
@@ -67,7 +67,7 @@
#include <asm/uaccess.h>
#include <asm/system.h>
-DEFINE_SNMP_STAT(struct icmpv6_mib, icmpv6_statistics);
+DEFINE_SNMP_STAT(struct icmpv6_mib, icmpv6_statistics) __read_mostly;
/*
* The ICMP socket(s). This is the most convenient way to flow control
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