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Subject[PATCH 1/3] lglock: remove unused DEFINE_LGLOCK_LOCKDEP()
Date
struct lglocks use their own lock_key/lock_dep_map which are defined
in struct lglock. DEFINE_LGLOCK_LOCKDEP() is unused now, so we remove it
and save a small piece of memory.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
---
include/linux/lglock.h | 9 ---------
1 files changed, 0 insertions(+), 9 deletions(-)

diff --git a/include/linux/lglock.h b/include/linux/lglock.h
index f01e5f6..45eff71 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 }
--
1.7.4.4


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