#ifndef __LINUX_QRWLOCK_API_SMP_H
#define __LINUX_QRWLOCK_API_SMP_H
/*
* 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_qread_lock(qrwlock_t *lock) __acquires(lock);
void __lockfunc _raw_qwrite_lock(qrwlock_t *lock) __acquires(lock);
void __lockfunc _raw_qread_lock_bh(qrwlock_t *lock) __acquires(lock);
void __lockfunc _raw_qwrite_lock_bh(qrwlock_t *lock) __acquires(lock);
void __lockfunc _raw_qread_lock_irq(qrwlock_t *lock) __acquires(lock);
void __lockfunc _raw_qwrite_lock_irq(qrwlock_t *lock) __acquires(lock);
unsigned long __lockfunc _raw_qread_lock_irqsave(qrwlock_t *lock)
__acquires(lock);
unsigned long __lockfunc _raw_qwrite_lock_irqsave(qrwlock_t *lock)
__acquires(lock);
int __lockfunc _raw_qread_trylock(qrwlock_t *lock);
int __lockfunc _raw_qwrite_trylock(qrwlock_t *lock);
void __lockfunc _raw_qread_unlock(qrwlock_t *lock) __releases(lock);
void __lockfunc _raw_qwrite_unlock(qrwlock_t *lock) __releases(lock);
void __lockfunc _raw_qread_unlock_bh(qrwlock_t *lock) __releases(lock);
void __lockfunc _raw_qwrite_unlock_bh(qrwlock_t *lock) __releases(lock);
void __lockfunc _raw_qread_unlock_irq(qrwlock_t *lock) __releases(lock);
void __lockfunc _raw_qwrite_unlock_irq(qrwlock_t *lock) __releases(lock);
void __lockfunc
_raw_qread_unlock_irqrestore(qrwlock_t *lock, unsigned long flags)
__releases(lock);
void __lockfunc
_raw_qwrite_unlock_irqrestore(qrwlock_t *lock, unsigned long flags)
__releases(lock);
#ifdef CONFIG_INLINE_READ_LOCK
#define _raw_qread_lock(lock) __raw_qread_lock(lock)
#endif
#ifdef CONFIG_INLINE_WRITE_LOCK
#define _raw_qwrite_lock(lock) __raw_qwrite_lock(lock)
#endif
#ifdef CONFIG_INLINE_READ_LOCK_BH
#define _raw_qread_lock_bh(lock) __raw_qread_lock_bh(lock)
#endif
#ifdef CONFIG_INLINE_WRITE_LOCK_BH
#define _raw_qwrite_lock_bh(lock) __raw_qwrite_lock_bh(lock)
#endif
#ifdef CONFIG_INLINE_READ_LOCK_IRQ
#define _raw_qread_lock_irq(lock) __raw_qread_lock_irq(lock)
#endif
#ifdef CONFIG_INLINE_WRITE_LOCK_IRQ
#define _raw_qwrite_lock_irq(lock) __raw_qwrite_lock_irq(lock)
#endif
#ifdef CONFIG_INLINE_READ_LOCK_IRQSAVE
#define _raw_qread_lock_irqsave(lock) __raw_qread_lock_irqsave(lock)
#endif
#ifdef CONFIG_INLINE_WRITE_LOCK_IRQSAVE
#define _raw_qwrite_lock_irqsave(lock) __raw_qwrite_lock_irqsave(lock)
#endif
#ifdef CONFIG_INLINE_READ_TRYLOCK
#define _raw_qread_trylock(lock) __raw_qread_trylock(lock)
#endif
#ifdef CONFIG_INLINE_WRITE_TRYLOCK
#define _raw_qwrite_trylock(lock) __raw_qwrite_trylock(lock)
#endif
#ifdef CONFIG_INLINE_READ_UNLOCK
#define _raw_qread_unlock(lock) __raw_qread_unlock(lock)
#endif
#ifdef CONFIG_INLINE_WRITE_UNLOCK
#define _raw_qwrite_unlock(lock) __raw_qwrite_unlock(lock)
#endif
#ifdef CONFIG_INLINE_READ_UNLOCK_BH
#define _raw_qread_unlock_bh(lock) __raw_qread_unlock_bh(lock)
#endif
#ifdef CONFIG_INLINE_WRITE_UNLOCK_BH
#define _raw_qwrite_unlock_bh(lock) __raw_qwrite_unlock_bh(lock)
#endif
#ifdef CONFIG_INLINE_READ_UNLOCK_IRQ
#define _raw_qread_unlock_irq(lock) __raw_qread_unlock_irq(lock)
#endif
#ifdef CONFIG_INLINE_WRITE_UNLOCK_IRQ
#define _raw_qwrite_unlock_irq(lock) __raw_qwrite_unlock_irq(lock)
#endif
#ifdef CONFIG_INLINE_READ_UNLOCK_IRQRESTORE
#define _raw_qread_unlock_irqrestore(lock, flags) \
__raw_qread_unlock_irqrestore(lock, flags)
#endif
#ifdef CONFIG_INLINE_WRITE_UNLOCK_IRQRESTORE
#define _raw_qwrite_unlock_irqrestore(lock, flags) \
__raw_qwrite_unlock_irqrestore(lock, flags)
#endif
static inline int __raw_qread_trylock(qrwlock_t *lock)
{
preempt_disable();
if (do_raw_qread_trylock(lock)) {
rwlock_acquire_read(&lock->dep_map, 0, 1, _RET_IP_);
return 1;
}
preempt_enable();
return 0;
}
static inline int __raw_qwrite_trylock(qrwlock_t *lock)
{
preempt_disable();
if (do_raw_qwrite_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_qread_lock(qrwlock_t *lock)
{
preempt_disable();
rwlock_acquire_read(&lock->dep_map, 0, 0, _RET_IP_);
LOCK_CONTENDED(lock, do_raw_qread_trylock, do_raw_qread_lock);
}
static inline unsigned long __raw_qread_lock_irqsave(qrwlock_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_qread_trylock, do_raw_qread_lock,
do_raw_qread_lock_flags, &flags);
return flags;
}
static inline void __raw_qread_lock_irq(qrwlock_t *lock)
{
local_irq_disable();
preempt_disable();
rwlock_acquire_read(&lock->dep_map, 0, 0, _RET_IP_);
LOCK_CONTENDED(lock, do_raw_qread_trylock, do_raw_qread_lock);
}
static inline void __raw_qread_lock_bh(qrwlock_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_qread_trylock, do_raw_qread_lock);
}
static inline unsigned long __raw_qwrite_lock_irqsave(qrwlock_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_qwrite_trylock, do_raw_qwrite_lock,
do_raw_qwrite_lock_flags, &flags);
return flags;
}
static inline void __raw_qwrite_lock_irq(qrwlock_t *lock)
{
local_irq_disable();
preempt_disable();
rwlock_acquire(&lock->dep_map, 0, 0, _RET_IP_);
LOCK_CONTENDED(lock, do_raw_qwrite_trylock, do_raw_qwrite_lock);
}
static inline void __raw_qwrite_lock_bh(qrwlock_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_qwrite_trylock, do_raw_qwrite_lock);
}
static inline void __raw_qwrite_lock(qrwlock_t *lock)
{
preempt_disable();
rwlock_acquire(&lock->dep_map, 0, 0, _RET_IP_);
LOCK_CONTENDED(lock, do_raw_qwrite_trylock, do_raw_qwrite_lock);
}
#endif /* CONFIG_PREEMPT */
static inline void __raw_qwrite_unlock(qrwlock_t *lock)
{
rwlock_release(&lock->dep_map, 1, _RET_IP_);
do_raw_qwrite_unlock(lock);
preempt_enable();
}
static inline void __raw_qread_unlock(qrwlock_t *lock)
{
rwlock_release(&lock->dep_map, 1, _RET_IP_);
do_raw_qread_unlock(lock);
preempt_enable();
}
static inline void
__raw_qread_unlock_irqrestore(qrwlock_t *lock, unsigned long flags)
{
rwlock_release(&lock->dep_map, 1, _RET_IP_);
do_raw_qread_unlock(lock);
local_irq_restore(flags);
preempt_enable();
}
static inline void __raw_qread_unlock_irq(qrwlock_t *lock)
{
rwlock_release(&lock->dep_map, 1, _RET_IP_);
do_raw_qread_unlock(lock);
local_irq_enable();
preempt_enable();
}
static inline void __raw_qread_unlock_bh(qrwlock_t *lock)
{
rwlock_release(&lock->dep_map, 1, _RET_IP_);
do_raw_qread_unlock(lock);
__local_bh_enable_ip(_RET_IP_, SOFTIRQ_LOCK_OFFSET);
}
static inline void __raw_qwrite_unlock_irqrestore(qrwlock_t *lock,
unsigned long flags)
{
rwlock_release(&lock->dep_map, 1, _RET_IP_);
do_raw_qwrite_unlock(lock);
local_irq_restore(flags);
preempt_enable();
}
static inline void __raw_qwrite_unlock_irq(qrwlock_t *lock)
{
rwlock_release(&lock->dep_map, 1, _RET_IP_);
do_raw_qwrite_unlock(lock);
local_irq_enable();
preempt_enable();
}
static inline void __raw_qwrite_unlock_bh(qrwlock_t *lock)
{
rwlock_release(&lock->dep_map, 1, _RET_IP_);
do_raw_qwrite_unlock(lock);
__local_bh_enable_ip(_RET_IP_, SOFTIRQ_LOCK_OFFSET);
}
#endif /* __LINUX_QRWLOCK_API_SMP_H */
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