include/linux/spinlock_types_raw.h

#ifndef __LINUX_SPINLOCK_TYPES_RAW_H
#define __LINUX_SPINLOCK_TYPES_RAW_H

#include <linux/types.h>

#if defined(CONFIG_SMP)
# include <asm/spinlock_types.h>
#else
# include <linux/spinlock_types_up.h>
#endif

#include <linux/lockdep_types.h>

typedef struct raw_spinlock {
	arch_spinlock_t raw_lock;
#ifdef CONFIG_DEBUG_SPINLOCK
	unsigned int magic, owner_cpu;
	void *owner;
#endif
#ifdef CONFIG_DEBUG_LOCK_ALLOC
	struct lockdep_map dep_map;
#endif
} raw_spinlock_t;

#define SPINLOCK_MAGIC		0xdead4ead

#define SPINLOCK_OWNER_INIT	((void *)-1L)

#ifdef CONFIG_DEBUG_LOCK_ALLOC
# define RAW_SPIN_DEP_MAP_INIT(lockname)		\
	.dep_map = {					\
		.name = #lockname,			\
		.wait_type_inner = LD_WAIT_SPIN,	\
	}
# define SPIN_DEP_MAP_INIT(lockname)			\
	.dep_map = {					\
		.name = #lockname,			\
		.wait_type_inner = LD_WAIT_CONFIG,	\
	}

# define LOCAL_SPIN_DEP_MAP_INIT(lockname)		\
	.dep_map = {					\
		.name = #lockname,			\
		.wait_type_inner = LD_WAIT_CONFIG,	\
		.lock_type = LD_LOCK_PERCPU,		\
	}
#else
# define RAW_SPIN_DEP_MAP_INIT(lockname)
# define SPIN_DEP_MAP_INIT(lockname)
# define LOCAL_SPIN_DEP_MAP_INIT(lockname)
#endif

#ifdef CONFIG_DEBUG_SPINLOCK
# define SPIN_DEBUG_INIT(lockname)		\
	.magic = SPINLOCK_MAGIC,		\
	.owner_cpu = -1,			\
	.owner = SPINLOCK_OWNER_INIT,
#else
# define SPIN_DEBUG_INIT(lockname)
#endif

#define __RAW_SPIN_LOCK_INITIALIZER(lockname)	\
{						\
	.raw_lock = __ARCH_SPIN_LOCK_UNLOCKED,	\
	SPIN_DEBUG_INIT(lockname)		\
	RAW_SPIN_DEP_MAP_INIT(lockname) }

#define __RAW_SPIN_LOCK_UNLOCKED(lockname)	\
	(raw_spinlock_t) __RAW_SPIN_LOCK_INITIALIZER(lockname)

#define DEFINE_RAW_SPINLOCK(x)  raw_spinlock_t x = __RAW_SPIN_LOCK_UNLOCKED(x)

#endif /* __LINUX_SPINLOCK_TYPES_RAW_H */