ddk: update includes
git-svn-id: svn://kolibrios.org@5272 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
Sergey Semyonov (Serge)
@@ -47,13 +47,13 @@
|
||||
*/
|
||||
|
||||
#include <linux/typecheck.h>
|
||||
//#include <linux/preempt.h>
|
||||
#include <linux/preempt.h>
|
||||
#include <linux/linkage.h>
|
||||
#include <linux/compiler.h>
|
||||
//#include <linux/thread_info.h>
|
||||
#include <linux/irqflags.h>
|
||||
#include <linux/kernel.h>
|
||||
#include <linux/stringify.h>
|
||||
//#include <linux/bottom_half.h>
|
||||
#include <linux/bottom_half.h>
|
||||
#include <asm/barrier.h>
|
||||
|
||||
|
||||
@@ -89,234 +89,322 @@
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_DEBUG_SPINLOCK
|
||||
extern void __spin_lock_init(spinlock_t *lock, const char *name,
|
||||
extern void __raw_spin_lock_init(raw_spinlock_t *lock, const char *name,
|
||||
struct lock_class_key *key);
|
||||
# define spin_lock_init(lock) \
|
||||
# define raw_spin_lock_init(lock) \
|
||||
do { \
|
||||
static struct lock_class_key __key; \
|
||||
\
|
||||
__spin_lock_init((lock), #lock, &__key); \
|
||||
__raw_spin_lock_init((lock), #lock, &__key); \
|
||||
} while (0)
|
||||
|
||||
#else
|
||||
# define spin_lock_init(lock) \
|
||||
do { *(lock) = __SPIN_LOCK_UNLOCKED(lock); } while (0)
|
||||
# define raw_spin_lock_init(lock) \
|
||||
do { *(lock) = __RAW_SPIN_LOCK_UNLOCKED(lock); } while (0)
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_DEBUG_SPINLOCK
|
||||
extern void __rwlock_init(rwlock_t *lock, const char *name,
|
||||
struct lock_class_key *key);
|
||||
# define rwlock_init(lock) \
|
||||
do { \
|
||||
static struct lock_class_key __key; \
|
||||
\
|
||||
__rwlock_init((lock), #lock, &__key); \
|
||||
} while (0)
|
||||
#else
|
||||
# define rwlock_init(lock) \
|
||||
do { *(lock) = __RW_LOCK_UNLOCKED(lock); } while (0)
|
||||
#endif
|
||||
|
||||
#define spin_is_locked(lock) __raw_spin_is_locked(&(lock)->raw_lock)
|
||||
#define raw_spin_is_locked(lock) arch_spin_is_locked(&(lock)->raw_lock)
|
||||
|
||||
#ifdef CONFIG_GENERIC_LOCKBREAK
|
||||
#define spin_is_contended(lock) ((lock)->break_lock)
|
||||
#define raw_spin_is_contended(lock) ((lock)->break_lock)
|
||||
#else
|
||||
|
||||
#ifdef __raw_spin_is_contended
|
||||
#define spin_is_contended(lock) __raw_spin_is_contended(&(lock)->raw_lock)
|
||||
#ifdef arch_spin_is_contended
|
||||
#define raw_spin_is_contended(lock) arch_spin_is_contended(&(lock)->raw_lock)
|
||||
#else
|
||||
#define spin_is_contended(lock) (((void)(lock), 0))
|
||||
#endif /*__raw_spin_is_contended*/
|
||||
#define raw_spin_is_contended(lock) (((void)(lock), 0))
|
||||
#endif /*arch_spin_is_contended*/
|
||||
#endif
|
||||
|
||||
/* The lock does not imply full memory barrier. */
|
||||
#ifndef ARCH_HAS_SMP_MB_AFTER_LOCK
|
||||
static inline void smp_mb__after_lock(void) { smp_mb(); }
|
||||
/*
|
||||
* Despite its name it doesn't necessarily has to be a full barrier.
|
||||
* It should only guarantee that a STORE before the critical section
|
||||
* can not be reordered with a LOAD inside this section.
|
||||
* spin_lock() is the one-way barrier, this LOAD can not escape out
|
||||
* of the region. So the default implementation simply ensures that
|
||||
* a STORE can not move into the critical section, smp_wmb() should
|
||||
* serialize it with another STORE done by spin_lock().
|
||||
*/
|
||||
#ifndef smp_mb__before_spinlock
|
||||
#define smp_mb__before_spinlock() smp_wmb()
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Place this after a lock-acquisition primitive to guarantee that
|
||||
* an UNLOCK+LOCK pair act as a full barrier. This guarantee applies
|
||||
* if the UNLOCK and LOCK are executed by the same CPU or if the
|
||||
* UNLOCK and LOCK operate on the same lock variable.
|
||||
*/
|
||||
#ifndef smp_mb__after_unlock_lock
|
||||
#define smp_mb__after_unlock_lock() do { } while (0)
|
||||
#endif
|
||||
|
||||
/**
|
||||
* spin_unlock_wait - wait until the spinlock gets unlocked
|
||||
* raw_spin_unlock_wait - wait until the spinlock gets unlocked
|
||||
* @lock: the spinlock in question.
|
||||
*/
|
||||
#define spin_unlock_wait(lock) __raw_spin_unlock_wait(&(lock)->raw_lock)
|
||||
#define raw_spin_unlock_wait(lock) arch_spin_unlock_wait(&(lock)->raw_lock)
|
||||
|
||||
#ifdef CONFIG_DEBUG_SPINLOCK
|
||||
extern void _raw_spin_lock(spinlock_t *lock);
|
||||
#define _raw_spin_lock_flags(lock, flags) _raw_spin_lock(lock)
|
||||
extern int _raw_spin_trylock(spinlock_t *lock);
|
||||
extern void _raw_spin_unlock(spinlock_t *lock);
|
||||
extern void _raw_read_lock(rwlock_t *lock);
|
||||
#define _raw_read_lock_flags(lock, flags) _raw_read_lock(lock)
|
||||
extern int _raw_read_trylock(rwlock_t *lock);
|
||||
extern void _raw_read_unlock(rwlock_t *lock);
|
||||
extern void _raw_write_lock(rwlock_t *lock);
|
||||
#define _raw_write_lock_flags(lock, flags) _raw_write_lock(lock)
|
||||
extern int _raw_write_trylock(rwlock_t *lock);
|
||||
extern void _raw_write_unlock(rwlock_t *lock);
|
||||
extern void do_raw_spin_lock(raw_spinlock_t *lock) __acquires(lock);
|
||||
#define do_raw_spin_lock_flags(lock, flags) do_raw_spin_lock(lock)
|
||||
extern int do_raw_spin_trylock(raw_spinlock_t *lock);
|
||||
extern void do_raw_spin_unlock(raw_spinlock_t *lock) __releases(lock);
|
||||
#else
|
||||
# define _raw_spin_lock(lock) __raw_spin_lock(&(lock)->raw_lock)
|
||||
# define _raw_spin_lock_flags(lock, flags) \
|
||||
__raw_spin_lock_flags(&(lock)->raw_lock, *(flags))
|
||||
# define _raw_spin_trylock(lock) __raw_spin_trylock(&(lock)->raw_lock)
|
||||
# define _raw_spin_unlock(lock) __raw_spin_unlock(&(lock)->raw_lock)
|
||||
# define _raw_read_lock(rwlock) __raw_read_lock(&(rwlock)->raw_lock)
|
||||
# define _raw_read_lock_flags(lock, flags) \
|
||||
__raw_read_lock_flags(&(lock)->raw_lock, *(flags))
|
||||
# define _raw_read_trylock(rwlock) __raw_read_trylock(&(rwlock)->raw_lock)
|
||||
# define _raw_read_unlock(rwlock) __raw_read_unlock(&(rwlock)->raw_lock)
|
||||
# define _raw_write_lock(rwlock) __raw_write_lock(&(rwlock)->raw_lock)
|
||||
# define _raw_write_lock_flags(lock, flags) \
|
||||
__raw_write_lock_flags(&(lock)->raw_lock, *(flags))
|
||||
# define _raw_write_trylock(rwlock) __raw_write_trylock(&(rwlock)->raw_lock)
|
||||
# define _raw_write_unlock(rwlock) __raw_write_unlock(&(rwlock)->raw_lock)
|
||||
#endif
|
||||
static inline void do_raw_spin_lock(raw_spinlock_t *lock) __acquires(lock)
|
||||
{
|
||||
__acquire(lock);
|
||||
arch_spin_lock(&lock->raw_lock);
|
||||
}
|
||||
|
||||
#define read_can_lock(rwlock) __raw_read_can_lock(&(rwlock)->raw_lock)
|
||||
#define write_can_lock(rwlock) __raw_write_can_lock(&(rwlock)->raw_lock)
|
||||
static inline void
|
||||
do_raw_spin_lock_flags(raw_spinlock_t *lock, unsigned long *flags) __acquires(lock)
|
||||
{
|
||||
__acquire(lock);
|
||||
arch_spin_lock_flags(&lock->raw_lock, *flags);
|
||||
}
|
||||
|
||||
static inline int do_raw_spin_trylock(raw_spinlock_t *lock)
|
||||
{
|
||||
return arch_spin_trylock(&(lock)->raw_lock);
|
||||
}
|
||||
|
||||
static inline void do_raw_spin_unlock(raw_spinlock_t *lock) __releases(lock)
|
||||
{
|
||||
arch_spin_unlock(&lock->raw_lock);
|
||||
__release(lock);
|
||||
}
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Define the various spin_lock and rw_lock methods. Note we define these
|
||||
* regardless of whether CONFIG_SMP or CONFIG_PREEMPT are set. The various
|
||||
* methods are defined as nops in the case they are not required.
|
||||
* Define the various spin_lock methods. Note we define these
|
||||
* regardless of whether CONFIG_SMP or CONFIG_PREEMPT are set. The
|
||||
* various methods are defined as nops in the case they are not
|
||||
* required.
|
||||
*/
|
||||
#define spin_trylock(lock) __cond_lock(lock, _spin_trylock(lock))
|
||||
#define read_trylock(lock) __cond_lock(lock, _read_trylock(lock))
|
||||
#define write_trylock(lock) __cond_lock(lock, _write_trylock(lock))
|
||||
#define raw_spin_trylock(lock) __cond_lock(lock, _raw_spin_trylock(lock))
|
||||
|
||||
#define spin_lock(lock) _spin_lock(lock)
|
||||
#define raw_spin_lock(lock) _raw_spin_lock(lock)
|
||||
|
||||
#ifdef CONFIG_DEBUG_LOCK_ALLOC
|
||||
# define spin_lock_nested(lock, subclass) _spin_lock_nested(lock, subclass)
|
||||
# define spin_lock_nest_lock(lock, nest_lock) \
|
||||
# define raw_spin_lock_nested(lock, subclass) \
|
||||
_raw_spin_lock_nested(lock, subclass)
|
||||
|
||||
# define raw_spin_lock_nest_lock(lock, nest_lock) \
|
||||
do { \
|
||||
typecheck(struct lockdep_map *, &(nest_lock)->dep_map);\
|
||||
_spin_lock_nest_lock(lock, &(nest_lock)->dep_map); \
|
||||
_raw_spin_lock_nest_lock(lock, &(nest_lock)->dep_map); \
|
||||
} while (0)
|
||||
#else
|
||||
# define spin_lock_nested(lock, subclass) _spin_lock(lock)
|
||||
# define spin_lock_nest_lock(lock, nest_lock) _spin_lock(lock)
|
||||
/*
|
||||
* Always evaluate the 'subclass' argument to avoid that the compiler
|
||||
* warns about set-but-not-used variables when building with
|
||||
* CONFIG_DEBUG_LOCK_ALLOC=n and with W=1.
|
||||
*/
|
||||
# define raw_spin_lock_nested(lock, subclass) \
|
||||
_raw_spin_lock(((void)(subclass), (lock)))
|
||||
# define raw_spin_lock_nest_lock(lock, nest_lock) _raw_spin_lock(lock)
|
||||
#endif
|
||||
|
||||
#define write_lock(lock) _write_lock(lock)
|
||||
#define read_lock(lock) _read_lock(lock)
|
||||
|
||||
#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK)
|
||||
|
||||
#define spin_lock_irqsave(lock, flags) \
|
||||
#define raw_spin_lock_irqsave(lock, flags) \
|
||||
do { \
|
||||
typecheck(unsigned long, flags); \
|
||||
flags = _spin_lock_irqsave(lock); \
|
||||
} while (0)
|
||||
#define read_lock_irqsave(lock, flags) \
|
||||
do { \
|
||||
typecheck(unsigned long, flags); \
|
||||
flags = _read_lock_irqsave(lock); \
|
||||
} while (0)
|
||||
#define write_lock_irqsave(lock, flags) \
|
||||
do { \
|
||||
typecheck(unsigned long, flags); \
|
||||
flags = _write_lock_irqsave(lock); \
|
||||
flags = _raw_spin_lock_irqsave(lock); \
|
||||
} while (0)
|
||||
|
||||
#ifdef CONFIG_DEBUG_LOCK_ALLOC
|
||||
#define spin_lock_irqsave_nested(lock, flags, subclass) \
|
||||
#define raw_spin_lock_irqsave_nested(lock, flags, subclass) \
|
||||
do { \
|
||||
typecheck(unsigned long, flags); \
|
||||
flags = _spin_lock_irqsave_nested(lock, subclass); \
|
||||
flags = _raw_spin_lock_irqsave_nested(lock, subclass); \
|
||||
} while (0)
|
||||
#else
|
||||
#define spin_lock_irqsave_nested(lock, flags, subclass) \
|
||||
#define raw_spin_lock_irqsave_nested(lock, flags, subclass) \
|
||||
do { \
|
||||
typecheck(unsigned long, flags); \
|
||||
flags = _spin_lock_irqsave(lock); \
|
||||
flags = _raw_spin_lock_irqsave(lock); \
|
||||
} while (0)
|
||||
#endif
|
||||
|
||||
#else
|
||||
|
||||
#define spin_lock_irqsave(lock, flags) \
|
||||
#define raw_spin_lock_irqsave(lock, flags) \
|
||||
do { \
|
||||
typecheck(unsigned long, flags); \
|
||||
_spin_lock_irqsave(lock, flags); \
|
||||
_raw_spin_lock_irqsave(lock, flags); \
|
||||
} while (0)
|
||||
#define read_lock_irqsave(lock, flags) \
|
||||
do { \
|
||||
typecheck(unsigned long, flags); \
|
||||
_read_lock_irqsave(lock, flags); \
|
||||
} while (0)
|
||||
#define write_lock_irqsave(lock, flags) \
|
||||
do { \
|
||||
typecheck(unsigned long, flags); \
|
||||
_write_lock_irqsave(lock, flags); \
|
||||
} while (0)
|
||||
#define spin_lock_irqsave_nested(lock, flags, subclass) \
|
||||
spin_lock_irqsave(lock, flags)
|
||||
|
||||
#define raw_spin_lock_irqsave_nested(lock, flags, subclass) \
|
||||
raw_spin_lock_irqsave(lock, flags)
|
||||
|
||||
#endif
|
||||
|
||||
#define spin_lock_irq(lock) _spin_lock_irq(lock)
|
||||
#define spin_lock_bh(lock) _spin_lock_bh(lock)
|
||||
#define read_lock_irq(lock) _read_lock_irq(lock)
|
||||
#define read_lock_bh(lock) _read_lock_bh(lock)
|
||||
#define write_lock_irq(lock) _write_lock_irq(lock)
|
||||
#define write_lock_bh(lock) _write_lock_bh(lock)
|
||||
#define spin_unlock(lock) _spin_unlock(lock)
|
||||
#define read_unlock(lock) _read_unlock(lock)
|
||||
#define write_unlock(lock) _write_unlock(lock)
|
||||
#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)
|
||||
#define raw_spin_lock_irq(lock) _raw_spin_lock_irq(lock)
|
||||
#define raw_spin_lock_bh(lock) _raw_spin_lock_bh(lock)
|
||||
#define raw_spin_unlock(lock) _raw_spin_unlock(lock)
|
||||
#define raw_spin_unlock_irq(lock) _raw_spin_unlock_irq(lock)
|
||||
|
||||
#define spin_unlock_irqrestore(lock, flags) \
|
||||
#define raw_spin_unlock_irqrestore(lock, flags) \
|
||||
do { \
|
||||
typecheck(unsigned long, flags); \
|
||||
_spin_unlock_irqrestore(lock, flags); \
|
||||
_raw_spin_unlock_irqrestore(lock, flags); \
|
||||
} while (0)
|
||||
#define spin_unlock_bh(lock) _spin_unlock_bh(lock)
|
||||
#define raw_spin_unlock_bh(lock) _raw_spin_unlock_bh(lock)
|
||||
|
||||
#define read_unlock_irqrestore(lock, flags) \
|
||||
do { \
|
||||
typecheck(unsigned long, flags); \
|
||||
_read_unlock_irqrestore(lock, flags); \
|
||||
} while (0)
|
||||
#define read_unlock_bh(lock) _read_unlock_bh(lock)
|
||||
#define raw_spin_trylock_bh(lock) \
|
||||
__cond_lock(lock, _raw_spin_trylock_bh(lock))
|
||||
|
||||
#define write_unlock_irqrestore(lock, flags) \
|
||||
do { \
|
||||
typecheck(unsigned long, flags); \
|
||||
_write_unlock_irqrestore(lock, flags); \
|
||||
} while (0)
|
||||
#define write_unlock_bh(lock) _write_unlock_bh(lock)
|
||||
|
||||
#define spin_trylock_bh(lock) __cond_lock(lock, _spin_trylock_bh(lock))
|
||||
|
||||
#define spin_trylock_irq(lock) \
|
||||
#define raw_spin_trylock_irq(lock) \
|
||||
({ \
|
||||
local_irq_disable(); \
|
||||
spin_trylock(lock) ? \
|
||||
raw_spin_trylock(lock) ? \
|
||||
1 : ({ local_irq_enable(); 0; }); \
|
||||
})
|
||||
|
||||
#define spin_trylock_irqsave(lock, flags) \
|
||||
#define raw_spin_trylock_irqsave(lock, flags) \
|
||||
({ \
|
||||
local_irq_save(flags); \
|
||||
spin_trylock(lock) ? \
|
||||
raw_spin_trylock(lock) ? \
|
||||
1 : ({ local_irq_restore(flags); 0; }); \
|
||||
})
|
||||
|
||||
#define write_trylock_irqsave(lock, flags) \
|
||||
/**
|
||||
* raw_spin_can_lock - would raw_spin_trylock() succeed?
|
||||
* @lock: the spinlock in question.
|
||||
*/
|
||||
#define raw_spin_can_lock(lock) (!raw_spin_is_locked(lock))
|
||||
|
||||
/* Include rwlock functions */
|
||||
#include <linux/rwlock.h>
|
||||
|
||||
/*
|
||||
* Pull the _spin_*()/_read_*()/_write_*() functions/declarations:
|
||||
*/
|
||||
#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK)
|
||||
# include <linux/spinlock_api_smp.h>
|
||||
#else
|
||||
# include <linux/spinlock_api_up.h>
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Map the spin_lock functions to the raw variants for PREEMPT_RT=n
|
||||
*/
|
||||
|
||||
static inline raw_spinlock_t *spinlock_check(spinlock_t *lock)
|
||||
{
|
||||
return &lock->rlock;
|
||||
}
|
||||
|
||||
#define spin_lock_init(_lock) \
|
||||
do { \
|
||||
spinlock_check(_lock); \
|
||||
raw_spin_lock_init(&(_lock)->rlock); \
|
||||
} while (0)
|
||||
|
||||
static inline void spin_lock(spinlock_t *lock)
|
||||
{
|
||||
raw_spin_lock(&lock->rlock);
|
||||
}
|
||||
|
||||
static inline void spin_lock_bh(spinlock_t *lock)
|
||||
{
|
||||
raw_spin_lock_bh(&lock->rlock);
|
||||
}
|
||||
|
||||
static inline int spin_trylock(spinlock_t *lock)
|
||||
{
|
||||
return raw_spin_trylock(&lock->rlock);
|
||||
}
|
||||
|
||||
#define spin_lock_nested(lock, subclass) \
|
||||
do { \
|
||||
raw_spin_lock_nested(spinlock_check(lock), subclass); \
|
||||
} while (0)
|
||||
|
||||
#define spin_lock_nest_lock(lock, nest_lock) \
|
||||
do { \
|
||||
raw_spin_lock_nest_lock(spinlock_check(lock), nest_lock); \
|
||||
} while (0)
|
||||
|
||||
static inline void spin_lock_irq(spinlock_t *lock)
|
||||
{
|
||||
raw_spin_lock_irq(&lock->rlock);
|
||||
}
|
||||
|
||||
#define spin_lock_irqsave(lock, flags) \
|
||||
do { \
|
||||
raw_spin_lock_irqsave(spinlock_check(lock), flags); \
|
||||
} while (0)
|
||||
|
||||
#define spin_lock_irqsave_nested(lock, flags, subclass) \
|
||||
do { \
|
||||
raw_spin_lock_irqsave_nested(spinlock_check(lock), flags, subclass); \
|
||||
} while (0)
|
||||
|
||||
static inline void spin_unlock(spinlock_t *lock)
|
||||
{
|
||||
raw_spin_unlock(&lock->rlock);
|
||||
}
|
||||
|
||||
static inline void spin_unlock_bh(spinlock_t *lock)
|
||||
{
|
||||
raw_spin_unlock_bh(&lock->rlock);
|
||||
}
|
||||
|
||||
static inline void spin_unlock_irq(spinlock_t *lock)
|
||||
{
|
||||
raw_spin_unlock_irq(&lock->rlock);
|
||||
}
|
||||
|
||||
static inline void spin_unlock_irqrestore(spinlock_t *lock, unsigned long flags)
|
||||
{
|
||||
raw_spin_unlock_irqrestore(&lock->rlock, flags);
|
||||
}
|
||||
|
||||
static inline int spin_trylock_bh(spinlock_t *lock)
|
||||
{
|
||||
return raw_spin_trylock_bh(&lock->rlock);
|
||||
}
|
||||
|
||||
static inline int spin_trylock_irq(spinlock_t *lock)
|
||||
{
|
||||
return raw_spin_trylock_irq(&lock->rlock);
|
||||
}
|
||||
|
||||
#define spin_trylock_irqsave(lock, flags) \
|
||||
({ \
|
||||
local_irq_save(flags); \
|
||||
write_trylock(lock) ? \
|
||||
1 : ({ local_irq_restore(flags); 0; }); \
|
||||
raw_spin_trylock_irqsave(spinlock_check(lock), flags); \
|
||||
})
|
||||
|
||||
static inline void spin_unlock_wait(spinlock_t *lock)
|
||||
{
|
||||
raw_spin_unlock_wait(&lock->rlock);
|
||||
}
|
||||
|
||||
static inline int spin_is_locked(spinlock_t *lock)
|
||||
{
|
||||
return raw_spin_is_locked(&lock->rlock);
|
||||
}
|
||||
|
||||
static inline int spin_is_contended(spinlock_t *lock)
|
||||
{
|
||||
return raw_spin_is_contended(&lock->rlock);
|
||||
}
|
||||
|
||||
static inline int spin_can_lock(spinlock_t *lock)
|
||||
{
|
||||
return raw_spin_can_lock(&lock->rlock);
|
||||
}
|
||||
|
||||
#define assert_spin_locked(lock) assert_raw_spin_locked(&(lock)->rlock)
|
||||
|
||||
/*
|
||||
* Pull the atomic_t declaration:
|
||||
* (asm-mips/atomic.h needs above definitions)
|
||||
*/
|
||||
#include <asm/atomic.h>
|
||||
#include <linux/atomic.h>
|
||||
/**
|
||||
* atomic_dec_and_lock - lock on reaching reference count zero
|
||||
* @atomic: the atomic counter
|
||||
@@ -329,25 +417,4 @@ extern int _atomic_dec_and_lock(atomic_t *atomic, spinlock_t *lock);
|
||||
#define atomic_dec_and_lock(atomic, lock) \
|
||||
__cond_lock(lock, _atomic_dec_and_lock(atomic, lock))
|
||||
|
||||
/**
|
||||
* spin_can_lock - would spin_trylock() succeed?
|
||||
* @lock: the spinlock in question.
|
||||
*/
|
||||
#define spin_can_lock(lock) (!spin_is_locked(lock))
|
||||
|
||||
/*
|
||||
* Pull the _spin_*()/_read_*()/_write_*() functions/declarations:
|
||||
*/
|
||||
#if defined(CONFIG_SMP) || defined(CONFIG_DEBUG_SPINLOCK)
|
||||
# include <linux/spinlock_api_smp.h>
|
||||
#else
|
||||
# include <linux/spinlock_api_up.h>
|
||||
#endif
|
||||
|
||||
struct rw_semaphore {
|
||||
signed long count;
|
||||
spinlock_t wait_lock;
|
||||
struct list_head wait_list;
|
||||
};
|
||||
|
||||
#endif /* __LINUX_SPINLOCK_H */
|
||||
|
||||
Reference in New Issue
Block a user