path: root/net/ipv4/fib_hash.c
diff options
authorEric Dumazet <>2005-08-26 12:05:31 -0700
committerDavid S. Miller <>2005-08-29 16:11:18 -0700
commitba89966c1984513f4f2cc0a6c182266be44ddd03 (patch)
tree6e5766fc5c287708c03e0a162531dfd4785b0703 /net/ipv4/fib_hash.c
parent29cb9f9c5502f6218cd3ea574efe46a5e55522d2 (diff)
[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 <>
Diffstat (limited to 'net/ipv4/fib_hash.c')
1 files changed, 2 insertions, 2 deletions
diff --git a/net/ipv4/fib_hash.c b/net/ipv4/fib_hash.c
index b10d6bb5ef3d..2a8c9afc3695 100644
--- a/net/ipv4/fib_hash.c
+++ b/net/ipv4/fib_hash.c
@@ -45,8 +45,8 @@
#include "fib_lookup.h"
-static kmem_cache_t *fn_hash_kmem;
-static kmem_cache_t *fn_alias_kmem;
+static kmem_cache_t *fn_hash_kmem __read_mostly;
+static kmem_cache_t *fn_alias_kmem __read_mostly;
struct fib_node {
struct hlist_node fn_hash;