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Commit 6b6b4792 authored by Thomas Gleixner's avatar Thomas Gleixner
Browse files

locking: Separate rwlock api from spinlock api 



Move the rwlock smp api defines and functions into a separate header
file. Makes the -rt selection simpler and less intrusive.

No functional change.

Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
Acked-by: default avatarPeter Zijlstra <peterz@infradead.org>
Acked-by: default avatarIngo Molnar <mingo@elte.hu>
parent ef12f109

include/linux/rwlock_api_smp.h

0 → 100644
+277 −0
Original line number Diff line number Diff line 
#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 _read_lock(rwlock_t *lock)		__acquires(lock);

void __lockfunc _write_lock(rwlock_t *lock)		__acquires(lock);

void __lockfunc _read_lock_bh(rwlock_t *lock)		__acquires(lock);

void __lockfunc _write_lock_bh(rwlock_t *lock)		__acquires(lock);

void __lockfunc _read_lock_irq(rwlock_t *lock)		__acquires(lock);

void __lockfunc _write_lock_irq(rwlock_t *lock)		__acquires(lock);

unsigned long __lockfunc _read_lock_irqsave(rwlock_t *lock)

							__acquires(lock);

unsigned long __lockfunc _write_lock_irqsave(rwlock_t *lock)

							__acquires(lock);

int __lockfunc _read_trylock(rwlock_t *lock);

int __lockfunc _write_trylock(rwlock_t *lock);

void __lockfunc _read_unlock(rwlock_t *lock)		__releases(lock);

void __lockfunc _write_unlock(rwlock_t *lock)		__releases(lock);

void __lockfunc _read_unlock_bh(rwlock_t *lock)		__releases(lock);

void __lockfunc _write_unlock_bh(rwlock_t *lock)	__releases(lock);

void __lockfunc _read_unlock_irq(rwlock_t *lock)	__releases(lock);

void __lockfunc _write_unlock_irq(rwlock_t *lock)	__releases(lock);

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

							__releases(lock);

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

							__releases(lock);



#ifdef CONFIG_INLINE_READ_LOCK

#define _read_lock(lock) __read_lock(lock)

#endif



#ifdef CONFIG_INLINE_WRITE_LOCK

#define _write_lock(lock) __write_lock(lock)

#endif



#ifdef CONFIG_INLINE_READ_LOCK_BH

#define _read_lock_bh(lock) __read_lock_bh(lock)

#endif



#ifdef CONFIG_INLINE_WRITE_LOCK_BH

#define _write_lock_bh(lock) __write_lock_bh(lock)

#endif



#ifdef CONFIG_INLINE_READ_LOCK_IRQ

#define _read_lock_irq(lock) __read_lock_irq(lock)

#endif



#ifdef CONFIG_INLINE_WRITE_LOCK_IRQ

#define _write_lock_irq(lock) __write_lock_irq(lock)

#endif



#ifdef CONFIG_INLINE_READ_LOCK_IRQSAVE

#define _read_lock_irqsave(lock) __read_lock_irqsave(lock)

#endif



#ifdef CONFIG_INLINE_WRITE_LOCK_IRQSAVE

#define _write_lock_irqsave(lock) __write_lock_irqsave(lock)

#endif



#ifdef CONFIG_INLINE_READ_TRYLOCK

#define _read_trylock(lock) __read_trylock(lock)

#endif



#ifdef CONFIG_INLINE_WRITE_TRYLOCK

#define _write_trylock(lock) __write_trylock(lock)

#endif



#ifdef CONFIG_INLINE_READ_UNLOCK

#define _read_unlock(lock) __read_unlock(lock)

#endif



#ifdef CONFIG_INLINE_WRITE_UNLOCK

#define _write_unlock(lock) __write_unlock(lock)

#endif



#ifdef CONFIG_INLINE_READ_UNLOCK_BH

#define _read_unlock_bh(lock) __read_unlock_bh(lock)

#endif



#ifdef CONFIG_INLINE_WRITE_UNLOCK_BH

#define _write_unlock_bh(lock) __write_unlock_bh(lock)

#endif



#ifdef CONFIG_INLINE_READ_UNLOCK_IRQ

#define _read_unlock_irq(lock) __read_unlock_irq(lock)

#endif



#ifdef CONFIG_INLINE_WRITE_UNLOCK_IRQ

#define _write_unlock_irq(lock) __write_unlock_irq(lock)

#endif



#ifdef CONFIG_INLINE_READ_UNLOCK_IRQRESTORE

#define _read_unlock_irqrestore(lock, flags) __read_unlock_irqrestore(lock, flags)

#endif



#ifdef CONFIG_INLINE_WRITE_UNLOCK_IRQRESTORE

#define _write_unlock_irqrestore(lock, flags) __write_unlock_irqrestore(lock, flags)

#endif



static inline int __read_trylock(rwlock_t *lock)

{

	preempt_disable();

	if (_raw_read_trylock(lock)) {

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

		return 1;

	}

	preempt_enable();

	return 0;

}



static inline int __write_trylock(rwlock_t *lock)

{

	preempt_disable();

	if (_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 __read_lock(rwlock_t *lock)

{

	preempt_disable();

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

	LOCK_CONTENDED(lock, _raw_read_trylock, _raw_read_lock);

}



static inline unsigned long __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, _raw_read_trylock, _raw_read_lock,

			     _raw_read_lock_flags, &flags);

	return flags;

}



static inline void __read_lock_irq(rwlock_t *lock)

{

	local_irq_disable();

	preempt_disable();

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

	LOCK_CONTENDED(lock, _raw_read_trylock, _raw_read_lock);

}



static inline void __read_lock_bh(rwlock_t *lock)

{

	local_bh_disable();

	preempt_disable();

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

	LOCK_CONTENDED(lock, _raw_read_trylock, _raw_read_lock);

}



static inline unsigned long __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, _raw_write_trylock, _raw_write_lock,

			     _raw_write_lock_flags, &flags);

	return flags;

}



static inline void __write_lock_irq(rwlock_t *lock)

{

	local_irq_disable();

	preempt_disable();

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

	LOCK_CONTENDED(lock, _raw_write_trylock, _raw_write_lock);

}



static inline void __write_lock_bh(rwlock_t *lock)

{

	local_bh_disable();

	preempt_disable();

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

	LOCK_CONTENDED(lock, _raw_write_trylock, _raw_write_lock);

}



static inline void __write_lock(rwlock_t *lock)

{

	preempt_disable();

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

	LOCK_CONTENDED(lock, _raw_write_trylock, _raw_write_lock);

}



#endif /* CONFIG_PREEMPT */



static inline void __write_unlock(rwlock_t *lock)

{

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

	_raw_write_unlock(lock);

	preempt_enable();

}



static inline void __read_unlock(rwlock_t *lock)

{

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

	_raw_read_unlock(lock);

	preempt_enable();

}



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

{

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

	_raw_read_unlock(lock);

	local_irq_restore(flags);

	preempt_enable();

}



static inline void __read_unlock_irq(rwlock_t *lock)

{

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

	_raw_read_unlock(lock);

	local_irq_enable();

	preempt_enable();

}



static inline void __read_unlock_bh(rwlock_t *lock)

{

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

	_raw_read_unlock(lock);

	preempt_enable_no_resched();

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

}



static inline void __write_unlock_irqrestore(rwlock_t *lock,

					     unsigned long flags)

{

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

	_raw_write_unlock(lock);

	local_irq_restore(flags);

	preempt_enable();

}



static inline void __write_unlock_irq(rwlock_t *lock)

{

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

	_raw_write_unlock(lock);

	local_irq_enable();

	preempt_enable();

}



static inline void __write_unlock_bh(rwlock_t *lock)

{

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

	_raw_write_unlock(lock);

	preempt_enable_no_resched();

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

}



#endif /* __LINUX_RWLOCK_API_SMP_H */

include/linux/spinlock_api_smp.h

+3 −249
Original line number Diff line number Diff line
@@ -24,102 +24,41 @@ void __lockfunc _spin_lock_nested(spinlock_t *lock, int subclass) 
							__acquires(lock);

void __lockfunc _spin_lock_nest_lock(spinlock_t *lock, struct lockdep_map *map)

							__acquires(lock);

void __lockfunc _read_lock(rwlock_t *lock)		__acquires(lock);

void __lockfunc _write_lock(rwlock_t *lock)		__acquires(lock);

void __lockfunc _spin_lock_bh(spinlock_t *lock)		__acquires(lock);

void __lockfunc _read_lock_bh(rwlock_t *lock)		__acquires(lock);

void __lockfunc _write_lock_bh(rwlock_t *lock)		__acquires(lock);

void __lockfunc _spin_lock_irq(spinlock_t *lock)	__acquires(lock);

void __lockfunc _read_lock_irq(rwlock_t *lock)		__acquires(lock);

void __lockfunc _write_lock_irq(rwlock_t *lock)		__acquires(lock);



unsigned long __lockfunc _spin_lock_irqsave(spinlock_t *lock)

							__acquires(lock);

unsigned long __lockfunc _spin_lock_irqsave_nested(spinlock_t *lock, int subclass)

							__acquires(lock);

unsigned long __lockfunc _read_lock_irqsave(rwlock_t *lock)

							__acquires(lock);

unsigned long __lockfunc _write_lock_irqsave(rwlock_t *lock)

							__acquires(lock);

int __lockfunc _spin_trylock(spinlock_t *lock);

int __lockfunc _read_trylock(rwlock_t *lock);

int __lockfunc _write_trylock(rwlock_t *lock);

int __lockfunc _spin_trylock_bh(spinlock_t *lock);

void __lockfunc _spin_unlock(spinlock_t *lock)		__releases(lock);

void __lockfunc _read_unlock(rwlock_t *lock)		__releases(lock);

void __lockfunc _write_unlock(rwlock_t *lock)		__releases(lock);

void __lockfunc _spin_unlock_bh(spinlock_t *lock)	__releases(lock);

void __lockfunc _read_unlock_bh(rwlock_t *lock)		__releases(lock);

void __lockfunc _write_unlock_bh(rwlock_t *lock)	__releases(lock);

void __lockfunc _spin_unlock_irq(spinlock_t *lock)	__releases(lock);

void __lockfunc _read_unlock_irq(rwlock_t *lock)	__releases(lock);

void __lockfunc _write_unlock_irq(rwlock_t *lock)	__releases(lock);

void __lockfunc _spin_unlock_irqrestore(spinlock_t *lock, unsigned long flags)

							__releases(lock);

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

							__releases(lock);

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

							__releases(lock);



#ifdef CONFIG_INLINE_SPIN_LOCK

#define _spin_lock(lock) __spin_lock(lock)

#endif



#ifdef CONFIG_INLINE_READ_LOCK

#define _read_lock(lock) __read_lock(lock)

#endif



#ifdef CONFIG_INLINE_WRITE_LOCK

#define _write_lock(lock) __write_lock(lock)

#endif



#ifdef CONFIG_INLINE_SPIN_LOCK_BH

#define _spin_lock_bh(lock) __spin_lock_bh(lock)

#endif



#ifdef CONFIG_INLINE_READ_LOCK_BH

#define _read_lock_bh(lock) __read_lock_bh(lock)

#endif



#ifdef CONFIG_INLINE_WRITE_LOCK_BH

#define _write_lock_bh(lock) __write_lock_bh(lock)

#endif



#ifdef CONFIG_INLINE_SPIN_LOCK_IRQ

#define _spin_lock_irq(lock) __spin_lock_irq(lock)

#endif



#ifdef CONFIG_INLINE_READ_LOCK_IRQ

#define _read_lock_irq(lock) __read_lock_irq(lock)

#endif



#ifdef CONFIG_INLINE_WRITE_LOCK_IRQ

#define _write_lock_irq(lock) __write_lock_irq(lock)

#endif



#ifdef CONFIG_INLINE_SPIN_LOCK_IRQSAVE

#define _spin_lock_irqsave(lock) __spin_lock_irqsave(lock)

#endif



#ifdef CONFIG_INLINE_READ_LOCK_IRQSAVE

#define _read_lock_irqsave(lock) __read_lock_irqsave(lock)

#endif



#ifdef CONFIG_INLINE_WRITE_LOCK_IRQSAVE

#define _write_lock_irqsave(lock) __write_lock_irqsave(lock)

#endif



#ifdef CONFIG_INLINE_SPIN_TRYLOCK

#define _spin_trylock(lock) __spin_trylock(lock)

#endif



#ifdef CONFIG_INLINE_READ_TRYLOCK

#define _read_trylock(lock) __read_trylock(lock)

#endif



#ifdef CONFIG_INLINE_WRITE_TRYLOCK

#define _write_trylock(lock) __write_trylock(lock)

#endif



#ifdef CONFIG_INLINE_SPIN_TRYLOCK_BH

#define _spin_trylock_bh(lock) __spin_trylock_bh(lock)

#endif
@@ -128,50 +67,18 @@ void __lockfunc _write_unlock_irqrestore(rwlock_t *lock, unsigned long flags) 
#define _spin_unlock(lock) __spin_unlock(lock)

#endif



#ifdef CONFIG_INLINE_READ_UNLOCK

#define _read_unlock(lock) __read_unlock(lock)

#endif



#ifdef CONFIG_INLINE_WRITE_UNLOCK

#define _write_unlock(lock) __write_unlock(lock)

#endif



#ifdef CONFIG_INLINE_SPIN_UNLOCK_BH

#define _spin_unlock_bh(lock) __spin_unlock_bh(lock)

#endif



#ifdef CONFIG_INLINE_READ_UNLOCK_BH

#define _read_unlock_bh(lock) __read_unlock_bh(lock)

#endif



#ifdef CONFIG_INLINE_WRITE_UNLOCK_BH

#define _write_unlock_bh(lock) __write_unlock_bh(lock)

#endif



#ifdef CONFIG_INLINE_SPIN_UNLOCK_IRQ

#define _spin_unlock_irq(lock) __spin_unlock_irq(lock)

#endif



#ifdef CONFIG_INLINE_READ_UNLOCK_IRQ

#define _read_unlock_irq(lock) __read_unlock_irq(lock)

#endif



#ifdef CONFIG_INLINE_WRITE_UNLOCK_IRQ

#define _write_unlock_irq(lock) __write_unlock_irq(lock)

#endif



#ifdef CONFIG_INLINE_SPIN_UNLOCK_IRQRESTORE

#define _spin_unlock_irqrestore(lock, flags) __spin_unlock_irqrestore(lock, flags)

#endif



#ifdef CONFIG_INLINE_READ_UNLOCK_IRQRESTORE

#define _read_unlock_irqrestore(lock, flags) __read_unlock_irqrestore(lock, flags)

#endif



#ifdef CONFIG_INLINE_WRITE_UNLOCK_IRQRESTORE

#define _write_unlock_irqrestore(lock, flags) __write_unlock_irqrestore(lock, flags)

#endif



static inline int __spin_trylock(spinlock_t *lock)

{

	preempt_disable();
@@ -183,28 +90,6 @@ static inline int __spin_trylock(spinlock_t *lock) 
	return 0;

}



static inline int __read_trylock(rwlock_t *lock)

{

	preempt_disable();

	if (_raw_read_trylock(lock)) {

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

		return 1;

	}

	preempt_enable();

	return 0;

}



static inline int __write_trylock(rwlock_t *lock)

{

	preempt_disable();

	if (_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
@@ -212,13 +97,6 @@ static inline int __write_trylock(rwlock_t *lock) 
 */

#if !defined(CONFIG_GENERIC_LOCKBREAK) || defined(CONFIG_DEBUG_LOCK_ALLOC)



static inline void __read_lock(rwlock_t *lock)

{

	preempt_disable();

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

	LOCK_CONTENDED(lock, _raw_read_trylock, _raw_read_lock);

}



static inline unsigned long __spin_lock_irqsave(spinlock_t *lock)

{

	unsigned long flags;
@@ -255,62 +133,6 @@ static inline void __spin_lock_bh(spinlock_t *lock) 
	LOCK_CONTENDED(lock, _raw_spin_trylock, _raw_spin_lock);

}



static inline unsigned long __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, _raw_read_trylock, _raw_read_lock,

			     _raw_read_lock_flags, &flags);

	return flags;

}



static inline void __read_lock_irq(rwlock_t *lock)

{

	local_irq_disable();

	preempt_disable();

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

	LOCK_CONTENDED(lock, _raw_read_trylock, _raw_read_lock);

}



static inline void __read_lock_bh(rwlock_t *lock)

{

	local_bh_disable();

	preempt_disable();

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

	LOCK_CONTENDED(lock, _raw_read_trylock, _raw_read_lock);

}



static inline unsigned long __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, _raw_write_trylock, _raw_write_lock,

			     _raw_write_lock_flags, &flags);

	return flags;

}



static inline void __write_lock_irq(rwlock_t *lock)

{

	local_irq_disable();

	preempt_disable();

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

	LOCK_CONTENDED(lock, _raw_write_trylock, _raw_write_lock);

}



static inline void __write_lock_bh(rwlock_t *lock)

{

	local_bh_disable();

	preempt_disable();

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

	LOCK_CONTENDED(lock, _raw_write_trylock, _raw_write_lock);

}



static inline void __spin_lock(spinlock_t *lock)

{

	preempt_disable();
@@ -318,13 +140,6 @@ static inline void __spin_lock(spinlock_t *lock) 
	LOCK_CONTENDED(lock, _raw_spin_trylock, _raw_spin_lock);

}



static inline void __write_lock(rwlock_t *lock)

{

	preempt_disable();

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

	LOCK_CONTENDED(lock, _raw_write_trylock, _raw_write_lock);

}



#endif /* CONFIG_PREEMPT */



static inline void __spin_unlock(spinlock_t *lock)
@@ -334,20 +149,6 @@ static inline void __spin_unlock(spinlock_t *lock) 
	preempt_enable();

}



static inline void __write_unlock(rwlock_t *lock)

{

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

	_raw_write_unlock(lock);

	preempt_enable();

}



static inline void __read_unlock(rwlock_t *lock)

{

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

	_raw_read_unlock(lock);

	preempt_enable();

}



static inline void __spin_unlock_irqrestore(spinlock_t *lock,

					    unsigned long flags)

{
@@ -373,55 +174,6 @@ static inline void __spin_unlock_bh(spinlock_t *lock) 
	local_bh_enable_ip((unsigned long)__builtin_return_address(0));

}



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

{

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

	_raw_read_unlock(lock);

	local_irq_restore(flags);

	preempt_enable();

}



static inline void __read_unlock_irq(rwlock_t *lock)

{

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

	_raw_read_unlock(lock);

	local_irq_enable();

	preempt_enable();

}



static inline void __read_unlock_bh(rwlock_t *lock)

{

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

	_raw_read_unlock(lock);

	preempt_enable_no_resched();

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

}



static inline void __write_unlock_irqrestore(rwlock_t *lock,

					     unsigned long flags)

{

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

	_raw_write_unlock(lock);

	local_irq_restore(flags);

	preempt_enable();

}



static inline void __write_unlock_irq(rwlock_t *lock)

{

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

	_raw_write_unlock(lock);

	local_irq_enable();

	preempt_enable();

}



static inline void __write_unlock_bh(rwlock_t *lock)

{

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

	_raw_write_unlock(lock);

	preempt_enable_no_resched();

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

}



static inline int __spin_trylock_bh(spinlock_t *lock)

{

	local_bh_disable();
@@ -435,4 +187,6 @@ static inline int __spin_trylock_bh(spinlock_t *lock) 
	return 0;

}



#include <linux/rwlock_api_smp.h>



#endif /* __LINUX_SPINLOCK_API_SMP_H */