--- /dev/null
+#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_ip(_RET_IP_, SOFTIRQ_LOCK_OFFSET);
+ 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_ip(_RET_IP_, SOFTIRQ_LOCK_OFFSET);
+ 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);
+ __local_bh_enable_ip(_RET_IP_, SOFTIRQ_LOCK_OFFSET);
+}
+
+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);
+ __local_bh_enable_ip(_RET_IP_, SOFTIRQ_LOCK_OFFSET);
+}
+
+#endif /* __LINUX_RWLOCK_API_SMP_H */
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