diff options
Diffstat (limited to 'arch/blackfin/include/asm/spinlock.h')
| -rw-r--r-- | arch/blackfin/include/asm/spinlock.h | 54 |
1 files changed, 35 insertions, 19 deletions
diff --git a/arch/blackfin/include/asm/spinlock.h b/arch/blackfin/include/asm/spinlock.h index 0249ac31947..490c7caa02d 100644 --- a/arch/blackfin/include/asm/spinlock.h +++ b/arch/blackfin/include/asm/spinlock.h @@ -1,7 +1,17 @@ +/* + * Copyright 2004-2009 Analog Devices Inc. + * + * Licensed under the GPL-2 or later. + */ + #ifndef __BFIN_SPINLOCK_H #define __BFIN_SPINLOCK_H -#include <asm/atomic.h> +#ifndef CONFIG_SMP +# include <asm-generic/spinlock.h> +#else + +#include <linux/atomic.h> asmlinkage int __raw_spin_is_locked_asm(volatile int *ptr); asmlinkage void __raw_spin_lock_asm(volatile int *ptr); @@ -14,76 +24,82 @@ asmlinkage void __raw_write_lock_asm(volatile int *ptr); asmlinkage int __raw_write_trylock_asm(volatile int *ptr); asmlinkage void __raw_write_unlock_asm(volatile int *ptr); -static inline int __raw_spin_is_locked(raw_spinlock_t *lock) +static inline int arch_spin_is_locked(arch_spinlock_t *lock) { return __raw_spin_is_locked_asm(&lock->lock); } -static inline void __raw_spin_lock(raw_spinlock_t *lock) +static inline void arch_spin_lock(arch_spinlock_t *lock) { __raw_spin_lock_asm(&lock->lock); } -#define __raw_spin_lock_flags(lock, flags) __raw_spin_lock(lock) +#define arch_spin_lock_flags(lock, flags) arch_spin_lock(lock) -static inline int __raw_spin_trylock(raw_spinlock_t *lock) +static inline int arch_spin_trylock(arch_spinlock_t *lock) { return __raw_spin_trylock_asm(&lock->lock); } -static inline void __raw_spin_unlock(raw_spinlock_t *lock) +static inline void arch_spin_unlock(arch_spinlock_t *lock) { __raw_spin_unlock_asm(&lock->lock); } -static inline void __raw_spin_unlock_wait(raw_spinlock_t *lock) +static inline void arch_spin_unlock_wait(arch_spinlock_t *lock) { - while (__raw_spin_is_locked(lock)) + while (arch_spin_is_locked(lock)) cpu_relax(); } -static inline int __raw_read_can_lock(raw_rwlock_t *rw) +static inline int arch_read_can_lock(arch_rwlock_t *rw) { return __raw_uncached_fetch_asm(&rw->lock) > 0; } -static inline int __raw_write_can_lock(raw_rwlock_t *rw) +static inline int arch_write_can_lock(arch_rwlock_t *rw) { return __raw_uncached_fetch_asm(&rw->lock) == RW_LOCK_BIAS; } -static inline void __raw_read_lock(raw_rwlock_t *rw) +static inline void arch_read_lock(arch_rwlock_t *rw) { __raw_read_lock_asm(&rw->lock); } -static inline int __raw_read_trylock(raw_rwlock_t *rw) +#define arch_read_lock_flags(lock, flags) arch_read_lock(lock) + +static inline int arch_read_trylock(arch_rwlock_t *rw) { return __raw_read_trylock_asm(&rw->lock); } -static inline void __raw_read_unlock(raw_rwlock_t *rw) +static inline void arch_read_unlock(arch_rwlock_t *rw) { __raw_read_unlock_asm(&rw->lock); } -static inline void __raw_write_lock(raw_rwlock_t *rw) +static inline void arch_write_lock(arch_rwlock_t *rw) { __raw_write_lock_asm(&rw->lock); } -static inline int __raw_write_trylock(raw_rwlock_t *rw) +#define arch_write_lock_flags(lock, flags) arch_write_lock(lock) + +static inline int arch_write_trylock(arch_rwlock_t *rw) { return __raw_write_trylock_asm(&rw->lock); } -static inline void __raw_write_unlock(raw_rwlock_t *rw) +static inline void arch_write_unlock(arch_rwlock_t *rw) { __raw_write_unlock_asm(&rw->lock); } -#define _raw_spin_relax(lock) cpu_relax() -#define _raw_read_relax(lock) cpu_relax() -#define _raw_write_relax(lock) cpu_relax() +#define arch_spin_relax(lock) cpu_relax() +#define arch_read_relax(lock) cpu_relax() +#define arch_write_relax(lock) cpu_relax() + +#endif #endif /* !__BFIN_SPINLOCK_H */ |
