0,0 → 1,100 |
#ifndef __LINUX_SPINLOCK_TYPES_H |
#define __LINUX_SPINLOCK_TYPES_H |
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/* |
* 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). |
*/ |
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#if defined(CONFIG_SMP) |
# include <asm/spinlock_types.h> |
#else |
# include <linux/spinlock_types_up.h> |
#endif |
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#include <linux/lockdep.h> |
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typedef struct { |
raw_spinlock_t raw_lock; |
#ifdef CONFIG_GENERIC_LOCKBREAK |
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; |
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#define SPINLOCK_MAGIC 0xdead4ead |
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typedef struct { |
raw_rwlock_t raw_lock; |
#ifdef CONFIG_GENERIC_LOCKBREAK |
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; |
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#define RWLOCK_MAGIC 0xdeaf1eed |
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#define SPINLOCK_OWNER_INIT ((void *)-1L) |
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#ifdef CONFIG_DEBUG_LOCK_ALLOC |
# define SPIN_DEP_MAP_INIT(lockname) .dep_map = { .name = #lockname } |
#else |
# define SPIN_DEP_MAP_INIT(lockname) |
#endif |
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#ifdef CONFIG_DEBUG_LOCK_ALLOC |
# define RW_DEP_MAP_INIT(lockname) .dep_map = { .name = #lockname } |
#else |
# define RW_DEP_MAP_INIT(lockname) |
#endif |
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#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 |
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/* |
* SPIN_LOCK_UNLOCKED and RW_LOCK_UNLOCKED defeat lockdep state tracking and |
* are hence deprecated. |
* Please use DEFINE_SPINLOCK()/DEFINE_RWLOCK() or |
* __SPIN_LOCK_UNLOCKED()/__RW_LOCK_UNLOCKED() as appropriate. |
*/ |
#define SPIN_LOCK_UNLOCKED __SPIN_LOCK_UNLOCKED(old_style_spin_init) |
#define RW_LOCK_UNLOCKED __RW_LOCK_UNLOCKED(old_style_rw_init) |
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#define DEFINE_SPINLOCK(x) spinlock_t x = __SPIN_LOCK_UNLOCKED(x) |
#define DEFINE_RWLOCK(x) rwlock_t x = __RW_LOCK_UNLOCKED(x) |
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#endif /* __LINUX_SPINLOCK_TYPES_H */ |