diff options
| author | Ying Xue <ying.xue@windriver.com> | 2012-08-16 16:09:12 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-08-20 13:26:31 +0400 |
| commit | 61cdd4d80b29cfdee45920238eea2d1fbb51f922 (patch) | |
| tree | 44df7d9694b581afae71955030ffbad25a4aee15 /net/tipc/handler.c | |
| parent | f046e7d9be1cbb3335694c7f9a31d18e1f998ff5 (diff) | |
| download | linux-61cdd4d80b29cfdee45920238eea2d1fbb51f922.tar.xz | |
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/handler.c')
| -rw-r--r-- | net/tipc/handler.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/tipc/handler.c b/net/tipc/handler.c index 7a52d3922f3c..111ff8300ae5 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); |