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/core/skbuff.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/core/skbuff.c')
| -rw-r--r-- | net/core/skbuff.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/net/core/skbuff.c b/net/core/skbuff.c index b853a9b29eb6..f80a28785610 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -68,8 +68,8 @@ #include <asm/uaccess.h> #include <asm/system.h> -static kmem_cache_t *skbuff_head_cache; -static kmem_cache_t *skbuff_fclone_cache; +static kmem_cache_t *skbuff_head_cache __read_mostly; +static kmem_cache_t *skbuff_fclone_cache __read_mostly; struct timeval __read_mostly skb_tv_base; |