From 61cdd4d80b29cfdee45920238eea2d1fbb51f922 Mon Sep 17 00:00:00 2001 From: Ying Xue Date: Thu, 16 Aug 2012 12:09:12 +0000 Subject: tipc: add __read_mostly annotations to several global variables Added to the following: - tipc_random - tipc_own_addr - tipc_max_ports - tipc_net_id - tipc_remote_management - handler_enabled The above global variables are read often, but written rarely. Use __read_mostly to prevent them being on the same cacheline as another variable which is written to often, which would cause cacheline bouncing. Signed-off-by: Ying Xue Signed-off-by: Jon Maloy Signed-off-by: Paul Gortmaker Signed-off-by: David S. Miller --- net/tipc/handler.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/tipc/handler.c') diff --git a/net/tipc/handler.c b/net/tipc/handler.c index 7a52d3922f3..111ff8300ae 100644 --- a/net/tipc/handler.c +++ b/net/tipc/handler.c @@ -45,7 +45,7 @@ struct queue_item { static struct kmem_cache *tipc_queue_item_cache; static struct list_head signal_queue_head; static DEFINE_SPINLOCK(qitem_lock); -static int handler_enabled; +static int handler_enabled __read_mostly; static void process_signal_queue(unsigned long dummy); -- cgit v1.2.3-70-g09d2