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Regard whitespace Rev 4065 → Rev 5272

/drivers/include/linux/spinlock_up.h
5,6 → 5,8
# error "please don't include this file directly"
#endif
 
#include <asm/processor.h> /* for cpu_relax() */
 
/*
* include/linux/spinlock_up.h - UP-debug version of spinlocks.
*
21,31 → 23,35
*/
 
#ifdef CONFIG_DEBUG_SPINLOCK
#define __raw_spin_is_locked(x) ((x)->slock == 0)
#define arch_spin_is_locked(x) ((x)->slock == 0)
 
static inline void __raw_spin_lock(raw_spinlock_t *lock)
static inline void arch_spin_lock(arch_spinlock_t *lock)
{
lock->slock = 0;
barrier();
}
 
static inline void
__raw_spin_lock_flags(raw_spinlock_t *lock, unsigned long flags)
arch_spin_lock_flags(arch_spinlock_t *lock, unsigned long flags)
{
local_irq_save(flags);
lock->slock = 0;
barrier();
}
 
static inline int __raw_spin_trylock(raw_spinlock_t *lock)
static inline int arch_spin_trylock(arch_spinlock_t *lock)
{
char oldval = lock->slock;
 
lock->slock = 0;
barrier();
 
return oldval > 0;
}
 
static inline void __raw_spin_unlock(raw_spinlock_t *lock)
static inline void arch_spin_unlock(arch_spinlock_t *lock)
{
barrier();
lock->slock = 1;
}
 
52,28 → 58,28
/*
* Read-write spinlocks. No debug version.
*/
#define __raw_read_lock(lock) do { (void)(lock); } while (0)
#define __raw_write_lock(lock) do { (void)(lock); } while (0)
#define __raw_read_trylock(lock) ({ (void)(lock); 1; })
#define __raw_write_trylock(lock) ({ (void)(lock); 1; })
#define __raw_read_unlock(lock) do { (void)(lock); } while (0)
#define __raw_write_unlock(lock) do { (void)(lock); } while (0)
#define arch_read_lock(lock) do { barrier(); (void)(lock); } while (0)
#define arch_write_lock(lock) do { barrier(); (void)(lock); } while (0)
#define arch_read_trylock(lock) ({ barrier(); (void)(lock); 1; })
#define arch_write_trylock(lock) ({ barrier(); (void)(lock); 1; })
#define arch_read_unlock(lock) do { barrier(); (void)(lock); } while (0)
#define arch_write_unlock(lock) do { barrier(); (void)(lock); } while (0)
 
#else /* DEBUG_SPINLOCK */
#define __raw_spin_is_locked(lock) ((void)(lock), 0)
/* for sched.c and kernel_lock.c: */
# define __raw_spin_lock(lock) do { (void)(lock); } while (0)
# define __raw_spin_lock_flags(lock, flags) do { (void)(lock); } while (0)
# define __raw_spin_unlock(lock) do { (void)(lock); } while (0)
# define __raw_spin_trylock(lock) ({ (void)(lock); 1; })
#define arch_spin_is_locked(lock) ((void)(lock), 0)
/* for sched/core.c and kernel_lock.c: */
# define arch_spin_lock(lock) do { barrier(); (void)(lock); } while (0)
# define arch_spin_lock_flags(lock, flags) do { barrier(); (void)(lock); } while (0)
# define arch_spin_unlock(lock) do { barrier(); (void)(lock); } while (0)
# define arch_spin_trylock(lock) ({ barrier(); (void)(lock); 1; })
#endif /* DEBUG_SPINLOCK */
 
#define __raw_spin_is_contended(lock) (((void)(lock), 0))
#define arch_spin_is_contended(lock) (((void)(lock), 0))
 
#define __raw_read_can_lock(lock) (((void)(lock), 1))
#define __raw_write_can_lock(lock) (((void)(lock), 1))
#define arch_read_can_lock(lock) (((void)(lock), 1))
#define arch_write_can_lock(lock) (((void)(lock), 1))
 
#define __raw_spin_unlock_wait(lock) \
do { cpu_relax(); } while (__raw_spin_is_locked(lock))
#define arch_spin_unlock_wait(lock) \
do { cpu_relax(); } while (arch_spin_is_locked(lock))
 
#endif /* __LINUX_SPINLOCK_UP_H */