120 lines
3.1 KiB
C
120 lines
3.1 KiB
C
#ifndef __LINUX_RWLOCK_RT_H
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#define __LINUX_RWLOCK_RT_H
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#ifndef __LINUX_SPINLOCK_H
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#error Do not include directly. Use spinlock.h
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#endif
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extern void __lockfunc rt_write_lock(rwlock_t *rwlock);
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extern void __lockfunc rt_read_lock(rwlock_t *rwlock);
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extern int __lockfunc rt_write_trylock(rwlock_t *rwlock);
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extern int __lockfunc rt_read_trylock(rwlock_t *rwlock);
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extern void __lockfunc rt_write_unlock(rwlock_t *rwlock);
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extern void __lockfunc rt_read_unlock(rwlock_t *rwlock);
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extern int __lockfunc rt_read_can_lock(rwlock_t *rwlock);
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extern int __lockfunc rt_write_can_lock(rwlock_t *rwlock);
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extern void __rt_rwlock_init(rwlock_t *rwlock, char *name, struct lock_class_key *key);
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#define read_can_lock(rwlock) rt_read_can_lock(rwlock)
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#define write_can_lock(rwlock) rt_write_can_lock(rwlock)
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#define read_trylock(lock) __cond_lock(lock, rt_read_trylock(lock))
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#define write_trylock(lock) __cond_lock(lock, rt_write_trylock(lock))
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static inline int __write_trylock_rt_irqsave(rwlock_t *lock, unsigned long *flags)
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{
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/* XXX ARCH_IRQ_ENABLED */
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*flags = 0;
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return rt_write_trylock(lock);
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}
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#define write_trylock_irqsave(lock, flags) \
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__cond_lock(lock, __write_trylock_rt_irqsave(lock, &(flags)))
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#define read_lock_irqsave(lock, flags) \
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do { \
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typecheck(unsigned long, flags); \
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rt_read_lock(lock); \
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flags = 0; \
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} while (0)
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#define write_lock_irqsave(lock, flags) \
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do { \
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typecheck(unsigned long, flags); \
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rt_write_lock(lock); \
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flags = 0; \
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} while (0)
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#define read_lock(lock) rt_read_lock(lock)
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#define read_lock_bh(lock) \
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do { \
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local_bh_disable(); \
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rt_read_lock(lock); \
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} while (0)
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#define read_lock_irq(lock) read_lock(lock)
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#define write_lock(lock) rt_write_lock(lock)
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#define write_lock_bh(lock) \
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do { \
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local_bh_disable(); \
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rt_write_lock(lock); \
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} while (0)
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#define write_lock_irq(lock) write_lock(lock)
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#define read_unlock(lock) rt_read_unlock(lock)
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#define read_unlock_bh(lock) \
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do { \
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rt_read_unlock(lock); \
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local_bh_enable(); \
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} while (0)
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#define read_unlock_irq(lock) read_unlock(lock)
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#define write_unlock(lock) rt_write_unlock(lock)
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#define write_unlock_bh(lock) \
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do { \
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rt_write_unlock(lock); \
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local_bh_enable(); \
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} while (0)
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#define write_unlock_irq(lock) write_unlock(lock)
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#define read_unlock_irqrestore(lock, flags) \
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do { \
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typecheck(unsigned long, flags); \
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(void) flags; \
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rt_read_unlock(lock); \
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} while (0)
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#define write_unlock_irqrestore(lock, flags) \
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do { \
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typecheck(unsigned long, flags); \
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(void) flags; \
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rt_write_unlock(lock); \
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} while (0)
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#define rwlock_init(rwl) \
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do { \
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static struct lock_class_key __key; \
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\
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__rt_rwlock_init(rwl, #rwl, &__key); \
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} while (0)
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/*
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* Internal functions made global for CPU pinning
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*/
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void __read_rt_lock(struct rt_rw_lock *lock);
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int __read_rt_trylock(struct rt_rw_lock *lock);
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void __write_rt_lock(struct rt_rw_lock *lock);
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int __write_rt_trylock(struct rt_rw_lock *lock);
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void __read_rt_unlock(struct rt_rw_lock *lock);
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void __write_rt_unlock(struct rt_rw_lock *lock);
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#endif
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