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Commit bda98685 authored by Ingo Molnar's avatar Ingo Molnar Committed by Linus Torvalds
Browse files

[PATCH] x86: inline spin_unlock if !CONFIG_DEBUG_SPINLOCK and !CONFIG_PREEMPT 



Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarMiklos Szeredi <miklos@szeredi.hu>
Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
parent c5311781

include/linux/spinlock.h

+25 −6
Original line number Diff line number Diff line
@@ -171,23 +171,42 @@ extern int __lockfunc generic__raw_read_trylock(raw_rwlock_t *lock); 
#define write_lock_irq(lock)		_write_lock_irq(lock)

#define write_lock_bh(lock)		_write_lock_bh(lock)



/*

 * We inline the unlock functions in the nondebug case:

 */

#if defined(CONFIG_DEBUG_SPINLOCK) || defined(CONFIG_PREEMPT) || !defined(CONFIG_SMP)

# define spin_unlock(lock)		_spin_unlock(lock)

#define write_unlock(lock)		_write_unlock(lock)

# define read_unlock(lock)		_read_unlock(lock)

# define write_unlock(lock)		_write_unlock(lock)

#else

# define spin_unlock(lock)		__raw_spin_unlock(&(lock)->raw_lock)

# define read_unlock(lock)		__raw_read_unlock(&(lock)->raw_lock)

# define write_unlock(lock)		__raw_write_unlock(&(lock)->raw_lock)

#endif



#if defined(CONFIG_DEBUG_SPINLOCK) || defined(CONFIG_PREEMPT) || !defined(CONFIG_SMP)

# define spin_unlock_irq(lock)		_spin_unlock_irq(lock)

# define read_unlock_irq(lock)		_read_unlock_irq(lock)

# define write_unlock_irq(lock)		_write_unlock_irq(lock)

#else

# define spin_unlock_irq(lock) \

    do { __raw_spin_unlock(&(lock)->raw_lock); local_irq_enable(); } while (0)

# define read_unlock_irq(lock) \

    do { __raw_read_unlock(&(lock)->raw_lock); local_irq_enable(); } while (0)

# define write_unlock_irq(lock) \

    do { __raw_write_unlock(&(lock)->raw_lock); local_irq_enable(); } while (0)

#endif



#define spin_unlock_irqrestore(lock, flags) \

					_spin_unlock_irqrestore(lock, flags)

#define spin_unlock_irq(lock)		_spin_unlock_irq(lock)

#define spin_unlock_bh(lock)		_spin_unlock_bh(lock)



#define read_unlock_irqrestore(lock, flags) \

					_read_unlock_irqrestore(lock, flags)

#define read_unlock_irq(lock)		_read_unlock_irq(lock)

#define read_unlock_bh(lock)		_read_unlock_bh(lock)



#define write_unlock_irqrestore(lock, flags) \

					_write_unlock_irqrestore(lock, flags)

#define write_unlock_irq(lock)		_write_unlock_irq(lock)

#define write_unlock_bh(lock)		_write_unlock_bh(lock)



#define spin_trylock_bh(lock)		__cond_lock(_spin_trylock_bh(lock))