The patch titled
Subject: lglock: remove unused DEFINE_LGLOCK_LOCKDEP()
has been added to the -mm tree. Its filename is
lglock-remove-unused-define_lglock_lockdep.patch
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------------------------------------------------------
From: Lai Jiangshan <laijs@xxxxxxxxxxxxxx>
Subject: 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@xxxxxxxxxxxxxx>
Cc: Alexander Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Rusty Russell <rusty@xxxxxxxxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/lglock.h | 9 ---------
1 file changed, 9 deletions(-)
diff -puN include/linux/lglock.h~lglock-remove-unused-define_lglock_lockdep include/linux/lglock.h
--- a/include/linux/lglock.h~lglock-remove-unused-define_lglock_lockdep
+++ a/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 }
_
Patches currently in -mm which might be from laijs@xxxxxxxxxxxxxx are
origin.patch
linux-next.patch
lglock-remove-unused-define_lglock_lockdep.patch
lglock-make-the-per_cpu-locks-static.patch
lglock-add-define_static_lglock.patch
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