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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).
- */
- #if defined(CONFIG_SMP)
- # include <asm/spinlock_types.h>
- #else
- # include <linux/spinlock_types_up.h>
- #endif
- #include <linux/lockdep_types.h>
- typedef struct raw_spinlock {
- arch_spinlock_t raw_lock;
- #ifdef CONFIG_DEBUG_SPINLOCK
- unsigned int magic, owner_cpu;
- void *owner;
- #endif
- #ifdef CONFIG_DEBUG_LOCK_ALLOC
- struct lockdep_map dep_map;
- #endif
- } raw_spinlock_t;
- #define SPINLOCK_MAGIC 0xdead4ead
- #define SPINLOCK_OWNER_INIT ((void *)-1L)
- #ifdef CONFIG_DEBUG_LOCK_ALLOC
- # define RAW_SPIN_DEP_MAP_INIT(lockname) \
- .dep_map = { \
- .name = #lockname, \
- .wait_type_inner = LD_WAIT_SPIN, \
- }
- # define SPIN_DEP_MAP_INIT(lockname) \
- .dep_map = { \
- .name = #lockname, \
- .wait_type_inner = LD_WAIT_CONFIG, \
- }
- #else
- # define RAW_SPIN_DEP_MAP_INIT(lockname)
- # define SPIN_DEP_MAP_INIT(lockname)
- #endif
- #ifdef CONFIG_DEBUG_SPINLOCK
- # define SPIN_DEBUG_INIT(lockname) \
- .magic = SPINLOCK_MAGIC, \
- .owner_cpu = -1, \
- .owner = SPINLOCK_OWNER_INIT,
- #else
- # define SPIN_DEBUG_INIT(lockname)
- #endif
- #define __RAW_SPIN_LOCK_INITIALIZER(lockname) \
- { \
- .raw_lock = __ARCH_SPIN_LOCK_UNLOCKED, \
- SPIN_DEBUG_INIT(lockname) \
- RAW_SPIN_DEP_MAP_INIT(lockname) }
- #define __RAW_SPIN_LOCK_UNLOCKED(lockname) \
- (raw_spinlock_t) __RAW_SPIN_LOCK_INITIALIZER(lockname)
- #define DEFINE_RAW_SPINLOCK(x) raw_spinlock_t x = __RAW_SPIN_LOCK_UNLOCKED(x)
- typedef struct spinlock {
- union {
- struct raw_spinlock rlock;
- #ifdef CONFIG_DEBUG_LOCK_ALLOC
- # define LOCK_PADSIZE (offsetof(struct raw_spinlock, dep_map))
- struct {
- u8 __padding[LOCK_PADSIZE];
- struct lockdep_map dep_map;
- };
- #endif
- };
- } spinlock_t;
- #define ___SPIN_LOCK_INITIALIZER(lockname) \
- { \
- .raw_lock = __ARCH_SPIN_LOCK_UNLOCKED, \
- SPIN_DEBUG_INIT(lockname) \
- SPIN_DEP_MAP_INIT(lockname) }
- #define __SPIN_LOCK_INITIALIZER(lockname) \
- { { .rlock = ___SPIN_LOCK_INITIALIZER(lockname) } }
- #define __SPIN_LOCK_UNLOCKED(lockname) \
- (spinlock_t) __SPIN_LOCK_INITIALIZER(lockname)
- #define DEFINE_SPINLOCK(x) spinlock_t x = __SPIN_LOCK_UNLOCKED(x)
- #include <linux/rwlock_types.h>
- #endif /* __LINUX_SPINLOCK_TYPES_H */
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