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// SPDX-License-Identifier: GPL-2.0-only
#ifndef __LINUX_RWLOCK_RT_H
#define __LINUX_RWLOCK_RT_H
#ifndef __LINUX_SPINLOCK_RT_H
#error Do not #include directly. Use <linux/spinlock.h>.
#endif
#ifdef CONFIG_DEBUG_LOCK_ALLOC
extern void __rt_rwlock_init(rwlock_t *rwlock, const char *name,
struct lock_class_key *key);
#else
static inline void __rt_rwlock_init(rwlock_t *rwlock, char *name,
struct lock_class_key *key)
{
}
#endif
#define rwlock_init(rwl) \
do { \
static struct lock_class_key __key; \
\
init_rwbase_rt(&(rwl)->rwbase); \
__rt_rwlock_init(rwl, #rwl, &__key); \
} while (0)
extern void rt_read_lock(rwlock_t *rwlock);
extern int rt_read_trylock(rwlock_t *rwlock);
extern void rt_read_unlock(rwlock_t *rwlock);
extern void rt_write_lock(rwlock_t *rwlock);
extern int rt_write_trylock(rwlock_t *rwlock);
extern void rt_write_unlock(rwlock_t *rwlock);
static __always_inline void read_lock(rwlock_t *rwlock)
{
rt_read_lock(rwlock);
}
static __always_inline void read_lock_bh(rwlock_t *rwlock)
{
local_bh_disable();
rt_read_lock(rwlock);
}
static __always_inline void read_lock_irq(rwlock_t *rwlock)
{
rt_read_lock(rwlock);
}
#define read_lock_irqsave(lock, flags) \
do { \
typecheck(unsigned long, flags); \
rt_read_lock(lock); \
flags = 0; \
} while (0)
#define read_trylock(lock) __cond_lock(lock, rt_read_trylock(lock))
static __always_inline void read_unlock(rwlock_t *rwlock)
{
rt_read_unlock(rwlock);
}
static __always_inline void read_unlock_bh(rwlock_t *rwlock)
{
rt_read_unlock(rwlock);
local_bh_enable();
}
static __always_inline void read_unlock_irq(rwlock_t *rwlock)
{
rt_read_unlock(rwlock);
}
static __always_inline void read_unlock_irqrestore(rwlock_t *rwlock,
unsigned long flags)
{
rt_read_unlock(rwlock);
}
static __always_inline void write_lock(rwlock_t *rwlock)
{
rt_write_lock(rwlock);
}
static __always_inline void write_lock_bh(rwlock_t *rwlock)
{
local_bh_disable();
rt_write_lock(rwlock);
}
static __always_inline void write_lock_irq(rwlock_t *rwlock)
{
rt_write_lock(rwlock);
}
#define write_lock_irqsave(lock, flags) \
do { \
typecheck(unsigned long, flags); \
rt_write_lock(lock); \
flags = 0; \
} while (0)
#define write_trylock(lock) __cond_lock(lock, rt_write_trylock(lock))
#define write_trylock_irqsave(lock, flags) \
({ \
int __locked; \
\
typecheck(unsigned long, flags); \
flags = 0; \
__locked = write_trylock(lock); \
__locked; \
})
static __always_inline void write_unlock(rwlock_t *rwlock)
{
rt_write_unlock(rwlock);
}
static __always_inline void write_unlock_bh(rwlock_t *rwlock)
{
rt_write_unlock(rwlock);
local_bh_enable();
}
static __always_inline void write_unlock_irq(rwlock_t *rwlock)
{
rt_write_unlock(rwlock);
}
static __always_inline void write_unlock_irqrestore(rwlock_t *rwlock,
unsigned long flags)
{
rt_write_unlock(rwlock);
}
#define rwlock_is_contended(lock) (((void)(lock), 0))
#endif /* __LINUX_RWLOCK_RT_H */