[ofa-general] [PATCH 2/6] IB: Use DEFINE_SPINLOCK() for static spinlocks
Roland Dreier
rolandd at cisco.com
Thu Jul 16 14:08:39 PDT 2009
Rather than just defining static spinlock_t variables and then
initializing them later in init functions, simply define them with
DEFINE_SPINLOCK() and remove the calls to spin_lock_init(). This cleans
up the source a tad and also shrinks the compiled code; eg on x86-64:
add/remove: 0/0 grow/shrink: 0/3 up/down: 0/-40 (-40)
function old new delta
ib_uverbs_init 336 326 -10
ib_mad_init_module 147 137 -10
ib_sa_init 123 103 -20
Signed-off-by: Roland Dreier <rolandd at cisco.com>
---
drivers/infiniband/core/mad.c | 6 +-----
drivers/infiniband/core/sa_query.c | 7 ++-----
drivers/infiniband/core/uverbs_main.c | 4 +---
3 files changed, 4 insertions(+), 13 deletions(-)
diff --git a/drivers/infiniband/core/mad.c b/drivers/infiniband/core/mad.c
index de922a0..5cef8f8 100644
--- a/drivers/infiniband/core/mad.c
+++ b/drivers/infiniband/core/mad.c
@@ -51,8 +51,7 @@ static struct list_head ib_mad_port_list;
static u32 ib_mad_client_id = 0;
/* Port list lock */
-static spinlock_t ib_mad_port_list_lock;
-
+static DEFINE_SPINLOCK(ib_mad_port_list_lock);
/* Forward declarations */
static int method_in_use(struct ib_mad_mgmt_method_table **method,
@@ -2984,8 +2983,6 @@ static int __init ib_mad_init_module(void)
{
int ret;
- spin_lock_init(&ib_mad_port_list_lock);
-
ib_mad_cache = kmem_cache_create("ib_mad",
sizeof(struct ib_mad_private),
0,
@@ -3021,4 +3018,3 @@ static void __exit ib_mad_cleanup_module(void)
module_init(ib_mad_init_module);
module_exit(ib_mad_cleanup_module);
-
diff --git a/drivers/infiniband/core/sa_query.c b/drivers/infiniband/core/sa_query.c
index 1865049..8254371 100644
--- a/drivers/infiniband/core/sa_query.c
+++ b/drivers/infiniband/core/sa_query.c
@@ -109,10 +109,10 @@ static struct ib_client sa_client = {
.remove = ib_sa_remove_one
};
-static spinlock_t idr_lock;
+static DEFINE_SPINLOCK(idr_lock);
static DEFINE_IDR(query_idr);
-static spinlock_t tid_lock;
+static DEFINE_SPINLOCK(tid_lock);
static u32 tid;
#define PATH_REC_FIELD(field) \
@@ -1077,9 +1077,6 @@ static int __init ib_sa_init(void)
{
int ret;
- spin_lock_init(&idr_lock);
- spin_lock_init(&tid_lock);
-
get_random_bytes(&tid, sizeof tid);
ret = ib_register_client(&sa_client);
diff --git a/drivers/infiniband/core/uverbs_main.c b/drivers/infiniband/core/uverbs_main.c
index eb36a81..1a3ac3d 100644
--- a/drivers/infiniband/core/uverbs_main.c
+++ b/drivers/infiniband/core/uverbs_main.c
@@ -73,7 +73,7 @@ DEFINE_IDR(ib_uverbs_cq_idr);
DEFINE_IDR(ib_uverbs_qp_idr);
DEFINE_IDR(ib_uverbs_srq_idr);
-static spinlock_t map_lock;
+static DEFINE_SPINLOCK(map_lock);
static struct ib_uverbs_device *dev_table[IB_UVERBS_MAX_DEVICES];
static DECLARE_BITMAP(dev_map, IB_UVERBS_MAX_DEVICES);
@@ -836,8 +836,6 @@ static int __init ib_uverbs_init(void)
{
int ret;
- spin_lock_init(&map_lock);
-
ret = register_chrdev_region(IB_UVERBS_BASE_DEV, IB_UVERBS_MAX_DEVICES,
"infiniband_verbs");
if (ret) {
--
1.6.3.3
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