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authorYing Xue <ying.xue@windriver.com>2012-08-16 12:09:12 +0000
committerDavid S. Miller <davem@davemloft.net>2012-08-20 02:26:31 -0700
commit61cdd4d80b29cfdee45920238eea2d1fbb51f922 (patch)
tree44df7d9694b581afae71955030ffbad25a4aee15 /net/tipc/core.c
parentf046e7d9be1cbb3335694c7f9a31d18e1f998ff5 (diff)
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 <ying.xue@windriver.com> Signed-off-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc/core.c')
-rw-r--r--net/tipc/core.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/net/tipc/core.c b/net/tipc/core.c
index daae7f74d418..b858f2003523 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;
/**