mirror of
https://github.com/torvalds/linux.git
synced 2024-11-15 00:21:59 +00:00
e5931943d0
Name space cleanup for rwlock functions. No functional change. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Peter Zijlstra <peterz@infradead.org> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: linux-arch@vger.kernel.org
102 lines
2.3 KiB
C
102 lines
2.3 KiB
C
/*
|
||
* Copyright 2004-2009 Analog Devices Inc.
|
||
*
|
||
* Licensed under the GPL-2 or later.
|
||
*/
|
||
|
||
#ifndef __BFIN_SPINLOCK_H
|
||
#define __BFIN_SPINLOCK_H
|
||
|
||
#ifndef CONFIG_SMP
|
||
# include <asm-generic/spinlock.h>
|
||
#else
|
||
|
||
#include <asm/atomic.h>
|
||
|
||
asmlinkage int __raw_spin_is_locked_asm(volatile int *ptr);
|
||
asmlinkage void __raw_spin_lock_asm(volatile int *ptr);
|
||
asmlinkage int __raw_spin_trylock_asm(volatile int *ptr);
|
||
asmlinkage void __raw_spin_unlock_asm(volatile int *ptr);
|
||
asmlinkage void arch_read_lock_asm(volatile int *ptr);
|
||
asmlinkage int arch_read_trylock_asm(volatile int *ptr);
|
||
asmlinkage void arch_read_unlock_asm(volatile int *ptr);
|
||
asmlinkage void arch_write_lock_asm(volatile int *ptr);
|
||
asmlinkage int arch_write_trylock_asm(volatile int *ptr);
|
||
asmlinkage void arch_write_unlock_asm(volatile int *ptr);
|
||
|
||
static inline int arch_spin_is_locked(arch_spinlock_t *lock)
|
||
{
|
||
return __raw_spin_is_locked_asm(&lock->lock);
|
||
}
|
||
|
||
static inline void arch_spin_lock(arch_spinlock_t *lock)
|
||
{
|
||
__raw_spin_lock_asm(&lock->lock);
|
||
}
|
||
|
||
#define arch_spin_lock_flags(lock, flags) arch_spin_lock(lock)
|
||
|
||
static inline int arch_spin_trylock(arch_spinlock_t *lock)
|
||
{
|
||
return __raw_spin_trylock_asm(&lock->lock);
|
||
}
|
||
|
||
static inline void arch_spin_unlock(arch_spinlock_t *lock)
|
||
{
|
||
__raw_spin_unlock_asm(&lock->lock);
|
||
}
|
||
|
||
static inline void arch_spin_unlock_wait(arch_spinlock_t *lock)
|
||
{
|
||
while (arch_spin_is_locked(lock))
|
||
cpu_relax();
|
||
}
|
||
|
||
static inline int arch_read_can_lock(arch_rwlock_t *rw)
|
||
{
|
||
return __raw_uncached_fetch_asm(&rw->lock) > 0;
|
||
}
|
||
|
||
static inline int arch_write_can_lock(arch_rwlock_t *rw)
|
||
{
|
||
return __raw_uncached_fetch_asm(&rw->lock) == RW_LOCK_BIAS;
|
||
}
|
||
|
||
static inline void arch_read_lock(arch_rwlock_t *rw)
|
||
{
|
||
arch_read_lock_asm(&rw->lock);
|
||
}
|
||
|
||
static inline int arch_read_trylock(arch_rwlock_t *rw)
|
||
{
|
||
return arch_read_trylock_asm(&rw->lock);
|
||
}
|
||
|
||
static inline void arch_read_unlock(arch_rwlock_t *rw)
|
||
{
|
||
arch_read_unlock_asm(&rw->lock);
|
||
}
|
||
|
||
static inline void arch_write_lock(arch_rwlock_t *rw)
|
||
{
|
||
arch_write_lock_asm(&rw->lock);
|
||
}
|
||
|
||
static inline int arch_write_trylock(arch_rwlock_t *rw)
|
||
{
|
||
return arch_write_trylock_asm(&rw->lock);
|
||
}
|
||
|
||
static inline void arch_write_unlock(arch_rwlock_t *rw)
|
||
{
|
||
arch_write_unlock_asm(&rw->lock);
|
||
}
|
||
|
||
#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 */
|