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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/socket.c
parent29cb9f9c5502f6218cd3ea574efe46a5e55522d2 (diff)
downloadlinux-sh-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/socket.c')
-rw-r--r--net/socket.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/net/socket.c b/net/socket.c
index ce69b7862f59..94fe638b4d72 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -274,7 +274,7 @@ int move_addr_to_user(void *kaddr, int klen, void __user *uaddr, int __user *ule
#define SOCKFS_MAGIC 0x534F434B
-static kmem_cache_t * sock_inode_cachep;
+static kmem_cache_t * sock_inode_cachep __read_mostly;
static struct inode *sock_alloc_inode(struct super_block *sb)
{
@@ -333,7 +333,7 @@ static struct super_block *sockfs_get_sb(struct file_system_type *fs_type,
return get_sb_pseudo(fs_type, "socket:", &sockfs_ops, SOCKFS_MAGIC);
}
-static struct vfsmount *sock_mnt;
+static struct vfsmount *sock_mnt __read_mostly;
static struct file_system_type sock_fs_type = {
.name = "sockfs",