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/core.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'net/tipc/core.c') diff --git a/net/tipc/core.c b/net/tipc/core.c index daae7f7..b858f20 100644 --- a/net/tipc/core.c +++ b/net/tipc/core.c @@ -48,15 +48,15 @@ /* global variables used by multiple sub-systems within TIPC */ -int tipc_random; +int tipc_random __read_mostly; /* configurable TIPC parameters */ -u32 tipc_own_addr; -int tipc_max_ports; +u32 tipc_own_addr __read_mostly; +int tipc_max_ports __read_mostly; int tipc_max_subscriptions; int tipc_max_publications; -int tipc_net_id; -int tipc_remote_management; +int tipc_net_id __read_mostly; +int tipc_remote_management __read_mostly; /** -- cgit v1.1