spinlock.h File Reference

#include <linux/compiler.h>
#include <linux/atomic.h>
#include <asm/dcache_clear.h>
#include <asm/page.h>

Go to the source code of this file.

Macros
#define	arch_spin_is_locked(x)   (*(volatile int *)(&(x)->slock) <= 0)
#define	arch_spin_lock_flags(lock, flags)   arch_spin_lock(lock)
#define	arch_spin_unlock_wait(x)   do { cpu_relax(); } while (arch_spin_is_locked(x))
#define	arch_read_can_lock(x)   ((int)(x)->lock > 0)
#define	arch_write_can_lock(x)   ((x)->lock == RW_LOCK_BIAS)
#define	arch_read_lock_flags(lock, flags)   arch_read_lock(lock)
#define	arch_write_lock_flags(lock, flags)   arch_write_lock(lock)
#define	arch_spin_relax(lock)   cpu_relax()
#define	arch_read_relax(lock)   cpu_relax()
#define	arch_write_relax(lock)   cpu_relax()

Macro Definition Documentation

#define arch_read_can_lock

(

x

)

((int)(x)->lock > 0)

read_can_lock - would read_trylock() succeed? : the rwlock in question.

Definition at line 144 of file spinlock.h.

#define arch_read_lock_flags	(		lock,
			flags
	)		arch_read_lock(lock)

Definition at line 320 of file spinlock.h.

#define arch_read_relax

(

lock

)

cpu_relax()

Definition at line 324 of file spinlock.h.

#define arch_spin_is_locked

(

x

)

(*(volatile int *)(&(x)->slock) <= 0)

Definition at line 28 of file spinlock.h.

#define arch_spin_lock_flags	(		lock,
			flags
	)		arch_spin_lock(lock)

Definition at line 29 of file spinlock.h.

#define arch_spin_relax

(

lock

)

cpu_relax()

Definition at line 323 of file spinlock.h.

#define arch_spin_unlock_wait

(

x

)

do { cpu_relax(); } while (arch_spin_is_locked(x))

Definition at line 30 of file spinlock.h.

#define arch_write_can_lock

(

x

)

((x)->lock == RW_LOCK_BIAS)

write_can_lock - would write_trylock() succeed? : the rwlock in question.

Definition at line 150 of file spinlock.h.

#define arch_write_lock_flags	(		lock,
			flags
	)		arch_write_lock(lock)

Definition at line 321 of file spinlock.h.

#define arch_write_relax

(

lock

)

cpu_relax()

Definition at line 325 of file spinlock.h.