lglock: remove unused DEFINE_LGLOCK_LOCKDEP() (462e1e1b) · Commits · 戴 / test

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>

include/linux/lglock.h

+0 −9

Original line number	Diff line number	Diff line
		@@ -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 }

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