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- #ifndef __LINUX_SPINLOCK_TYPES_H
- #define __LINUX_SPINLOCK_TYPES_H
- /*
- * include/linux/spinlock_types.h - generic spinlock type definitions
- * and initializers
- *
- * portions Copyright 2005, Red Hat, Inc., Ingo Molnar
- * Released under the General Public License (GPL).
- */
- #include <linux/lockdep.h>
- #if defined(CONFIG_SMP)
- # include <asm/spinlock_types.h>
- #else
- # include <linux/spinlock_types_up.h>
- #endif
- typedef struct {
- raw_spinlock_t raw_lock;
- #if defined(CONFIG_PREEMPT) && defined(CONFIG_SMP)
- unsigned int break_lock;
- #endif
- #ifdef CONFIG_DEBUG_SPINLOCK
- unsigned int magic, owner_cpu;
- void *owner;
- #endif
- #ifdef CONFIG_DEBUG_LOCK_ALLOC
- struct lockdep_map dep_map;
- #endif
- } spinlock_t;
- #define SPINLOCK_MAGIC 0xdead4ead
- typedef struct {
- raw_rwlock_t raw_lock;
- #if defined(CONFIG_PREEMPT) && defined(CONFIG_SMP)
- unsigned int break_lock;
- #endif
- #ifdef CONFIG_DEBUG_SPINLOCK
- unsigned int magic, owner_cpu;
- void *owner;
- #endif
- #ifdef CONFIG_DEBUG_LOCK_ALLOC
- struct lockdep_map dep_map;
- #endif
- } rwlock_t;
- #define RWLOCK_MAGIC 0xdeaf1eed
- #define SPINLOCK_OWNER_INIT ((void *)-1L)
- #ifdef CONFIG_DEBUG_LOCK_ALLOC
- # define SPIN_DEP_MAP_INIT(lockname) .dep_map = { .name = #lockname }
- #else
- # define SPIN_DEP_MAP_INIT(lockname)
- #endif
- #ifdef CONFIG_DEBUG_LOCK_ALLOC
- # define RW_DEP_MAP_INIT(lockname) .dep_map = { .name = #lockname }
- #else
- # define RW_DEP_MAP_INIT(lockname)
- #endif
- #ifdef CONFIG_DEBUG_SPINLOCK
- # define __SPIN_LOCK_UNLOCKED(lockname) \
- (spinlock_t) { .raw_lock = __RAW_SPIN_LOCK_UNLOCKED, \
- .magic = SPINLOCK_MAGIC, \
- .owner = SPINLOCK_OWNER_INIT, \
- .owner_cpu = -1, \
- SPIN_DEP_MAP_INIT(lockname) }
- #define __RW_LOCK_UNLOCKED(lockname) \
- (rwlock_t) { .raw_lock = __RAW_RW_LOCK_UNLOCKED, \
- .magic = RWLOCK_MAGIC, \
- .owner = SPINLOCK_OWNER_INIT, \
- .owner_cpu = -1, \
- RW_DEP_MAP_INIT(lockname) }
- #else
- # define __SPIN_LOCK_UNLOCKED(lockname) \
- (spinlock_t) { .raw_lock = __RAW_SPIN_LOCK_UNLOCKED, \
- SPIN_DEP_MAP_INIT(lockname) }
- #define __RW_LOCK_UNLOCKED(lockname) \
- (rwlock_t) { .raw_lock = __RAW_RW_LOCK_UNLOCKED, \
- RW_DEP_MAP_INIT(lockname) }
- #endif
- #define SPIN_LOCK_UNLOCKED __SPIN_LOCK_UNLOCKED(old_style_spin_init)
- #define RW_LOCK_UNLOCKED __RW_LOCK_UNLOCKED(old_style_rw_init)
- #define DEFINE_SPINLOCK(x) spinlock_t x = __SPIN_LOCK_UNLOCKED(x)
- #define DEFINE_RWLOCK(x) rwlock_t x = __RW_LOCK_UNLOCKED(x)
- #endif /* __LINUX_SPINLOCK_TYPES_H */
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