lglock: remove unused DEFINE_LGLOCK_LOCKDEP()

struct lglocks use their own lock_key/lock_dep_map which are defined in
struct lglock.  DEFINE_LGLOCK_LOCKDEP() is unused, so remove it and save a
small piece of memory.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 0 insertions, 9 deletions

diff --git a/include/linux/lglock.h b/include/linux/lglock.h
index f01e5f6d1f07..45eff71de887 100644
--- a/include/linux/lglock.h
+++ b/include/linux/lglock.h
@@ -36,16 +36,8 @@
 
 #ifdef CONFIG_DEBUG_LOCK_ALLOC
 #define LOCKDEP_INIT_MAP lockdep_init_map
-
-#define DEFINE_LGLOCK_LOCKDEP(name)                                     \
- struct lock_class_key name##_lock_key;                                 \
- struct lockdep_map name##_lock_dep_map;                                \
- EXPORT_SYMBOL(name##_lock_dep_map)
-
 #else
 #define LOCKDEP_INIT_MAP(a, b, c, d)
-
-#define DEFINE_LGLOCK_LOCKDEP(name)
 #endif
 
 struct lglock {
@@ -57,7 +49,6 @@ struct lglock {
 };
 
 #define DEFINE_LGLOCK(name)                                             \
-        DEFINE_LGLOCK_LOCKDEP(name);                                    \
         DEFINE_PER_CPU(arch_spinlock_t, name ## _lock)                  \
         = __ARCH_SPIN_LOCK_UNLOCKED;                                    \
         struct lglock name = { .lock = &name ## _lock }