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#ifndef __LINUX_RWLOCK_TYPES_H
#define __LINUX_RWLOCK_TYPES_H
#if !defined(__LINUX_SPINLOCK_TYPES_H)
# error "Do not include directly, include spinlock_types.h"
#endif
#ifdef CONFIG_DEBUG_LOCK_ALLOC
# define RW_DEP_MAP_INIT(lockname) \
.dep_map = { \
.name = #lockname, \
.wait_type_inner = LD_WAIT_CONFIG, \
}
#else
# define RW_DEP_MAP_INIT(lockname)
#endif
#ifndef CONFIG_PREEMPT_RT
/*
* generic rwlock type definitions and initializers
*
* portions Copyright 2005, Red Hat, Inc., Ingo Molnar
* Released under the General Public License (GPL).
*/
typedef struct {
arch_rwlock_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
} rwlock_t;
#define RWLOCK_MAGIC 0xdeaf1eed
#ifdef CONFIG_DEBUG_SPINLOCK
#define __RW_LOCK_UNLOCKED(lockname) \
(rwlock_t) { .raw_lock = __ARCH_RW_LOCK_UNLOCKED, \
.magic = RWLOCK_MAGIC, \
.owner = SPINLOCK_OWNER_INIT, \
.owner_cpu = -1, \
RW_DEP_MAP_INIT(lockname) }
#else
#define __RW_LOCK_UNLOCKED(lockname) \
(rwlock_t) { .raw_lock = __ARCH_RW_LOCK_UNLOCKED, \
RW_DEP_MAP_INIT(lockname) }
#endif
#define DEFINE_RWLOCK(x) rwlock_t x = __RW_LOCK_UNLOCKED(x)
#else /* !CONFIG_PREEMPT_RT */
#include <linux/rwbase_rt.h>
typedef struct {
struct rwbase_rt rwbase;
atomic_t readers;
#ifdef CONFIG_DEBUG_LOCK_ALLOC
struct lockdep_map dep_map;
#endif
} rwlock_t;
#define __RWLOCK_RT_INITIALIZER(name) \
{ \
.rwbase = __RWBASE_INITIALIZER(name), \
RW_DEP_MAP_INIT(name) \
}
#define __RW_LOCK_UNLOCKED(name) __RWLOCK_RT_INITIALIZER(name)
#define DEFINE_RWLOCK(name) \
rwlock_t name = __RW_LOCK_UNLOCKED(name)
#endif /* CONFIG_PREEMPT_RT */
#endif /* __LINUX_RWLOCK_TYPES_H */
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