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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 <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Eric Dumazet 2005-08-26 12:05:31 -07:00 • committed by David S. Miller
commit ba89966c19
29 changed files with 39 additions and 39 deletions
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4
net/socket.c
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@ -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",