#ifndef __LINUX_RWLOCK_API_SMP_H
  #define __LINUX_RWLOCK_API_SMP_H
  
  #ifndef __LINUX_SPINLOCK_API_SMP_H
  # error "please don't include this file directly"
  #endif
  
  /*
   * include/linux/rwlock_api_smp.h
   *
   * spinlock API declarations on SMP (and debug)
   * (implemented in kernel/spinlock.c)
   *
   * portions Copyright 2005, Red Hat, Inc., Ingo Molnar
   * Released under the General Public License (GPL).
   */

  void __lockfunc _raw_read_lock(rwlock_t *lock)		__acquires(lock);
  void __lockfunc _raw_write_lock(rwlock_t *lock)		__acquires(lock);
  void __lockfunc _raw_read_lock_bh(rwlock_t *lock)	__acquires(lock);
  void __lockfunc _raw_write_lock_bh(rwlock_t *lock)	__acquires(lock);
  void __lockfunc _raw_read_lock_irq(rwlock_t *lock)	__acquires(lock);
  void __lockfunc _raw_write_lock_irq(rwlock_t *lock)	__acquires(lock);
  unsigned long __lockfunc _raw_read_lock_irqsave(rwlock_t *lock)

  							__acquires(lock);

  unsigned long __lockfunc _raw_write_lock_irqsave(rwlock_t *lock)

  							__acquires(lock);

  int __lockfunc _raw_read_trylock(rwlock_t *lock);
  int __lockfunc _raw_write_trylock(rwlock_t *lock);
  void __lockfunc _raw_read_unlock(rwlock_t *lock)	__releases(lock);
  void __lockfunc _raw_write_unlock(rwlock_t *lock)	__releases(lock);
  void __lockfunc _raw_read_unlock_bh(rwlock_t *lock)	__releases(lock);
  void __lockfunc _raw_write_unlock_bh(rwlock_t *lock)	__releases(lock);
  void __lockfunc _raw_read_unlock_irq(rwlock_t *lock)	__releases(lock);
  void __lockfunc _raw_write_unlock_irq(rwlock_t *lock)	__releases(lock);
  void __lockfunc
  _raw_read_unlock_irqrestore(rwlock_t *lock, unsigned long flags)

  							__releases(lock);

  void __lockfunc
  _raw_write_unlock_irqrestore(rwlock_t *lock, unsigned long flags)

  							__releases(lock);
  
  #ifdef CONFIG_INLINE_READ_LOCK

  #define _raw_read_lock(lock) __raw_read_lock(lock)

  #endif
  
  #ifdef CONFIG_INLINE_WRITE_LOCK

  #define _raw_write_lock(lock) __raw_write_lock(lock)

  #endif
  
  #ifdef CONFIG_INLINE_READ_LOCK_BH

  #define _raw_read_lock_bh(lock) __raw_read_lock_bh(lock)

  #endif
  
  #ifdef CONFIG_INLINE_WRITE_LOCK_BH

  #define _raw_write_lock_bh(lock) __raw_write_lock_bh(lock)

  #endif
  
  #ifdef CONFIG_INLINE_READ_LOCK_IRQ

  #define _raw_read_lock_irq(lock) __raw_read_lock_irq(lock)

  #endif
  
  #ifdef CONFIG_INLINE_WRITE_LOCK_IRQ

  #define _raw_write_lock_irq(lock) __raw_write_lock_irq(lock)

  #endif
  
  #ifdef CONFIG_INLINE_READ_LOCK_IRQSAVE

  #define _raw_read_lock_irqsave(lock) __raw_read_lock_irqsave(lock)

  #endif
  
  #ifdef CONFIG_INLINE_WRITE_LOCK_IRQSAVE

  #define _raw_write_lock_irqsave(lock) __raw_write_lock_irqsave(lock)

  #endif
  
  #ifdef CONFIG_INLINE_READ_TRYLOCK

  #define _raw_read_trylock(lock) __raw_read_trylock(lock)

  #endif
  
  #ifdef CONFIG_INLINE_WRITE_TRYLOCK

  #define _raw_write_trylock(lock) __raw_write_trylock(lock)

  #endif
  
  #ifdef CONFIG_INLINE_READ_UNLOCK

  #define _raw_read_unlock(lock) __raw_read_unlock(lock)

  #endif
  
  #ifdef CONFIG_INLINE_WRITE_UNLOCK

  #define _raw_write_unlock(lock) __raw_write_unlock(lock)

  #endif
  
  #ifdef CONFIG_INLINE_READ_UNLOCK_BH

  #define _raw_read_unlock_bh(lock) __raw_read_unlock_bh(lock)

  #endif
  
  #ifdef CONFIG_INLINE_WRITE_UNLOCK_BH

  #define _raw_write_unlock_bh(lock) __raw_write_unlock_bh(lock)

  #endif
  
  #ifdef CONFIG_INLINE_READ_UNLOCK_IRQ

  #define _raw_read_unlock_irq(lock) __raw_read_unlock_irq(lock)

  #endif
  
  #ifdef CONFIG_INLINE_WRITE_UNLOCK_IRQ

  #define _raw_write_unlock_irq(lock) __raw_write_unlock_irq(lock)

  #endif
  
  #ifdef CONFIG_INLINE_READ_UNLOCK_IRQRESTORE

  #define _raw_read_unlock_irqrestore(lock, flags) \
  	__raw_read_unlock_irqrestore(lock, flags)

  #endif
  
  #ifdef CONFIG_INLINE_WRITE_UNLOCK_IRQRESTORE

  #define _raw_write_unlock_irqrestore(lock, flags) \
  	__raw_write_unlock_irqrestore(lock, flags)

  #endif

  static inline int __raw_read_trylock(rwlock_t *lock)

  {
  	preempt_disable();

  	if (do_raw_read_trylock(lock)) {

  		rwlock_acquire_read(&lock->dep_map, 0, 1, _RET_IP_);
  		return 1;
  	}
  	preempt_enable();
  	return 0;
  }

  static inline int __raw_write_trylock(rwlock_t *lock)

  {
  	preempt_disable();

  	if (do_raw_write_trylock(lock)) {

  		rwlock_acquire(&lock->dep_map, 0, 1, _RET_IP_);
  		return 1;
  	}
  	preempt_enable();
  	return 0;
  }
  
  /*
   * If lockdep is enabled then we use the non-preemption spin-ops
   * even on CONFIG_PREEMPT, because lockdep assumes that interrupts are
   * not re-enabled during lock-acquire (which the preempt-spin-ops do):
   */
  #if !defined(CONFIG_GENERIC_LOCKBREAK) || defined(CONFIG_DEBUG_LOCK_ALLOC)

  static inline void __raw_read_lock(rwlock_t *lock)

  {
  	preempt_disable();
  	rwlock_acquire_read(&lock->dep_map, 0, 0, _RET_IP_);

  	LOCK_CONTENDED(lock, do_raw_read_trylock, do_raw_read_lock);

  }

  static inline unsigned long __raw_read_lock_irqsave(rwlock_t *lock)

  {
  	unsigned long flags;
  
  	local_irq_save(flags);
  	preempt_disable();
  	rwlock_acquire_read(&lock->dep_map, 0, 0, _RET_IP_);

  	LOCK_CONTENDED_FLAGS(lock, do_raw_read_trylock, do_raw_read_lock,
  			     do_raw_read_lock_flags, &flags);

  	return flags;
  }

  static inline void __raw_read_lock_irq(rwlock_t *lock)

  {
  	local_irq_disable();
  	preempt_disable();
  	rwlock_acquire_read(&lock->dep_map, 0, 0, _RET_IP_);

  	LOCK_CONTENDED(lock, do_raw_read_trylock, do_raw_read_lock);

  }

  static inline void __raw_read_lock_bh(rwlock_t *lock)

  {
  	local_bh_disable();
  	preempt_disable();
  	rwlock_acquire_read(&lock->dep_map, 0, 0, _RET_IP_);

  	LOCK_CONTENDED(lock, do_raw_read_trylock, do_raw_read_lock);

  }

  static inline unsigned long __raw_write_lock_irqsave(rwlock_t *lock)

  {
  	unsigned long flags;
  
  	local_irq_save(flags);
  	preempt_disable();
  	rwlock_acquire(&lock->dep_map, 0, 0, _RET_IP_);

  	LOCK_CONTENDED_FLAGS(lock, do_raw_write_trylock, do_raw_write_lock,
  			     do_raw_write_lock_flags, &flags);

  	return flags;
  }

  static inline void __raw_write_lock_irq(rwlock_t *lock)

  {
  	local_irq_disable();
  	preempt_disable();
  	rwlock_acquire(&lock->dep_map, 0, 0, _RET_IP_);

  	LOCK_CONTENDED(lock, do_raw_write_trylock, do_raw_write_lock);

  }

  static inline void __raw_write_lock_bh(rwlock_t *lock)

  {
  	local_bh_disable();
  	preempt_disable();
  	rwlock_acquire(&lock->dep_map, 0, 0, _RET_IP_);

  	LOCK_CONTENDED(lock, do_raw_write_trylock, do_raw_write_lock);

  }

  static inline void __raw_write_lock(rwlock_t *lock)

  {
  	preempt_disable();
  	rwlock_acquire(&lock->dep_map, 0, 0, _RET_IP_);

  	LOCK_CONTENDED(lock, do_raw_write_trylock, do_raw_write_lock);

  }
  
  #endif /* CONFIG_PREEMPT */

  static inline void __raw_write_unlock(rwlock_t *lock)

  {
  	rwlock_release(&lock->dep_map, 1, _RET_IP_);

  	do_raw_write_unlock(lock);

  	preempt_enable();
  }

  static inline void __raw_read_unlock(rwlock_t *lock)

  {
  	rwlock_release(&lock->dep_map, 1, _RET_IP_);

  	do_raw_read_unlock(lock);

  	preempt_enable();
  }

  static inline void
  __raw_read_unlock_irqrestore(rwlock_t *lock, unsigned long flags)

  {
  	rwlock_release(&lock->dep_map, 1, _RET_IP_);

  	do_raw_read_unlock(lock);

  	local_irq_restore(flags);
  	preempt_enable();
  }

  static inline void __raw_read_unlock_irq(rwlock_t *lock)

  {
  	rwlock_release(&lock->dep_map, 1, _RET_IP_);

  	do_raw_read_unlock(lock);

  	local_irq_enable();
  	preempt_enable();
  }

  static inline void __raw_read_unlock_bh(rwlock_t *lock)

  {
  	rwlock_release(&lock->dep_map, 1, _RET_IP_);

  	do_raw_read_unlock(lock);

  	preempt_enable_no_resched();
  	local_bh_enable_ip((unsigned long)__builtin_return_address(0));
  }

  static inline void __raw_write_unlock_irqrestore(rwlock_t *lock,

  					     unsigned long flags)
  {
  	rwlock_release(&lock->dep_map, 1, _RET_IP_);

  	do_raw_write_unlock(lock);

  	local_irq_restore(flags);
  	preempt_enable();
  }

  static inline void __raw_write_unlock_irq(rwlock_t *lock)

  {
  	rwlock_release(&lock->dep_map, 1, _RET_IP_);

  	do_raw_write_unlock(lock);

  	local_irq_enable();
  	preempt_enable();
  }

  static inline void __raw_write_unlock_bh(rwlock_t *lock)

  {
  	rwlock_release(&lock->dep_map, 1, _RET_IP_);

  	do_raw_write_unlock(lock);

  	preempt_enable_no_resched();
  	local_bh_enable_ip((unsigned long)__builtin_return_address(0));
  }
  
  #endif /* __LINUX_RWLOCK_API_SMP_H */