[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>

1 files changed, 4 insertions, 4 deletions

diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c
index 2d9eb7fbd521..f3104035e35d 100644
--- a/net/sunrpc/sched.c
+++ b/net/sunrpc/sched.c
@@ -34,10 +34,10 @@ static int			rpc_task_id;
 #define RPC_BUFFER_MAXSIZE      (2048)
 #define RPC_BUFFER_POOLSIZE     (8)
 #define RPC_TASK_POOLSIZE       (8)
-static kmem_cache_t     *rpc_task_slabp;
-static kmem_cache_t     *rpc_buffer_slabp;
-static mempool_t        *rpc_task_mempool;
-static mempool_t        *rpc_buffer_mempool;
+static kmem_cache_t     *rpc_task_slabp __read_mostly;
+static kmem_cache_t     *rpc_buffer_slabp __read_mostly;
+static mempool_t        *rpc_task_mempool __read_mostly;
+static mempool_t        *rpc_buffer_mempool __read_mostly;
 
 static void                     __rpc_default_timer(struct rpc_task *task);
 static void                     rpciod_killall(void);