mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
284 lines
7.9 KiB
284 lines
7.9 KiB
#ifndef __LINUX_RWLOCK_API_SMP_H |
|
#define __LINUX_RWLOCK_API_SMP_H |
|
|
|
#ifndef __LINUX_SPINLOCK_API_SMP_H |
|
# error "please don't include this file directly" |
|
#endif |
|
|
|
/* |
|
* include/linux/rwlock_api_smp.h |
|
* |
|
* spinlock API declarations on SMP (and debug) |
|
* (implemented in kernel/spinlock.c) |
|
* |
|
* portions Copyright 2005, Red Hat, Inc., Ingo Molnar |
|
* Released under the General Public License (GPL). |
|
*/ |
|
|
|
void __lockfunc _raw_read_lock(rwlock_t *lock) __acquires(lock); |
|
void __lockfunc _raw_write_lock(rwlock_t *lock) __acquires(lock); |
|
void __lockfunc _raw_write_lock_nested(rwlock_t *lock, int subclass) __acquires(lock); |
|
void __lockfunc _raw_read_lock_bh(rwlock_t *lock) __acquires(lock); |
|
void __lockfunc _raw_write_lock_bh(rwlock_t *lock) __acquires(lock); |
|
void __lockfunc _raw_read_lock_irq(rwlock_t *lock) __acquires(lock); |
|
void __lockfunc _raw_write_lock_irq(rwlock_t *lock) __acquires(lock); |
|
unsigned long __lockfunc _raw_read_lock_irqsave(rwlock_t *lock) |
|
__acquires(lock); |
|
unsigned long __lockfunc _raw_write_lock_irqsave(rwlock_t *lock) |
|
__acquires(lock); |
|
int __lockfunc _raw_read_trylock(rwlock_t *lock); |
|
int __lockfunc _raw_write_trylock(rwlock_t *lock); |
|
void __lockfunc _raw_read_unlock(rwlock_t *lock) __releases(lock); |
|
void __lockfunc _raw_write_unlock(rwlock_t *lock) __releases(lock); |
|
void __lockfunc _raw_read_unlock_bh(rwlock_t *lock) __releases(lock); |
|
void __lockfunc _raw_write_unlock_bh(rwlock_t *lock) __releases(lock); |
|
void __lockfunc _raw_read_unlock_irq(rwlock_t *lock) __releases(lock); |
|
void __lockfunc _raw_write_unlock_irq(rwlock_t *lock) __releases(lock); |
|
void __lockfunc |
|
_raw_read_unlock_irqrestore(rwlock_t *lock, unsigned long flags) |
|
__releases(lock); |
|
void __lockfunc |
|
_raw_write_unlock_irqrestore(rwlock_t *lock, unsigned long flags) |
|
__releases(lock); |
|
|
|
#ifdef CONFIG_INLINE_READ_LOCK |
|
#define _raw_read_lock(lock) __raw_read_lock(lock) |
|
#endif |
|
|
|
#ifdef CONFIG_INLINE_WRITE_LOCK |
|
#define _raw_write_lock(lock) __raw_write_lock(lock) |
|
#endif |
|
|
|
#ifdef CONFIG_INLINE_READ_LOCK_BH |
|
#define _raw_read_lock_bh(lock) __raw_read_lock_bh(lock) |
|
#endif |
|
|
|
#ifdef CONFIG_INLINE_WRITE_LOCK_BH |
|
#define _raw_write_lock_bh(lock) __raw_write_lock_bh(lock) |
|
#endif |
|
|
|
#ifdef CONFIG_INLINE_READ_LOCK_IRQ |
|
#define _raw_read_lock_irq(lock) __raw_read_lock_irq(lock) |
|
#endif |
|
|
|
#ifdef CONFIG_INLINE_WRITE_LOCK_IRQ |
|
#define _raw_write_lock_irq(lock) __raw_write_lock_irq(lock) |
|
#endif |
|
|
|
#ifdef CONFIG_INLINE_READ_LOCK_IRQSAVE |
|
#define _raw_read_lock_irqsave(lock) __raw_read_lock_irqsave(lock) |
|
#endif |
|
|
|
#ifdef CONFIG_INLINE_WRITE_LOCK_IRQSAVE |
|
#define _raw_write_lock_irqsave(lock) __raw_write_lock_irqsave(lock) |
|
#endif |
|
|
|
#ifdef CONFIG_INLINE_READ_TRYLOCK |
|
#define _raw_read_trylock(lock) __raw_read_trylock(lock) |
|
#endif |
|
|
|
#ifdef CONFIG_INLINE_WRITE_TRYLOCK |
|
#define _raw_write_trylock(lock) __raw_write_trylock(lock) |
|
#endif |
|
|
|
#ifdef CONFIG_INLINE_READ_UNLOCK |
|
#define _raw_read_unlock(lock) __raw_read_unlock(lock) |
|
#endif |
|
|
|
#ifdef CONFIG_INLINE_WRITE_UNLOCK |
|
#define _raw_write_unlock(lock) __raw_write_unlock(lock) |
|
#endif |
|
|
|
#ifdef CONFIG_INLINE_READ_UNLOCK_BH |
|
#define _raw_read_unlock_bh(lock) __raw_read_unlock_bh(lock) |
|
#endif |
|
|
|
#ifdef CONFIG_INLINE_WRITE_UNLOCK_BH |
|
#define _raw_write_unlock_bh(lock) __raw_write_unlock_bh(lock) |
|
#endif |
|
|
|
#ifdef CONFIG_INLINE_READ_UNLOCK_IRQ |
|
#define _raw_read_unlock_irq(lock) __raw_read_unlock_irq(lock) |
|
#endif |
|
|
|
#ifdef CONFIG_INLINE_WRITE_UNLOCK_IRQ |
|
#define _raw_write_unlock_irq(lock) __raw_write_unlock_irq(lock) |
|
#endif |
|
|
|
#ifdef CONFIG_INLINE_READ_UNLOCK_IRQRESTORE |
|
#define _raw_read_unlock_irqrestore(lock, flags) \ |
|
__raw_read_unlock_irqrestore(lock, flags) |
|
#endif |
|
|
|
#ifdef CONFIG_INLINE_WRITE_UNLOCK_IRQRESTORE |
|
#define _raw_write_unlock_irqrestore(lock, flags) \ |
|
__raw_write_unlock_irqrestore(lock, flags) |
|
#endif |
|
|
|
static inline int __raw_read_trylock(rwlock_t *lock) |
|
{ |
|
preempt_disable(); |
|
if (do_raw_read_trylock(lock)) { |
|
rwlock_acquire_read(&lock->dep_map, 0, 1, _RET_IP_); |
|
return 1; |
|
} |
|
preempt_enable(); |
|
return 0; |
|
} |
|
|
|
static inline int __raw_write_trylock(rwlock_t *lock) |
|
{ |
|
preempt_disable(); |
|
if (do_raw_write_trylock(lock)) { |
|
rwlock_acquire(&lock->dep_map, 0, 1, _RET_IP_); |
|
return 1; |
|
} |
|
preempt_enable(); |
|
return 0; |
|
} |
|
|
|
/* |
|
* If lockdep is enabled then we use the non-preemption spin-ops |
|
* even on CONFIG_PREEMPT, because lockdep assumes that interrupts are |
|
* not re-enabled during lock-acquire (which the preempt-spin-ops do): |
|
*/ |
|
#if !defined(CONFIG_GENERIC_LOCKBREAK) || defined(CONFIG_DEBUG_LOCK_ALLOC) |
|
|
|
static inline void __raw_read_lock(rwlock_t *lock) |
|
{ |
|
preempt_disable(); |
|
rwlock_acquire_read(&lock->dep_map, 0, 0, _RET_IP_); |
|
LOCK_CONTENDED(lock, do_raw_read_trylock, do_raw_read_lock); |
|
} |
|
|
|
static inline unsigned long __raw_read_lock_irqsave(rwlock_t *lock) |
|
{ |
|
unsigned long flags; |
|
|
|
local_irq_save(flags); |
|
preempt_disable(); |
|
rwlock_acquire_read(&lock->dep_map, 0, 0, _RET_IP_); |
|
LOCK_CONTENDED(lock, do_raw_read_trylock, do_raw_read_lock); |
|
return flags; |
|
} |
|
|
|
static inline void __raw_read_lock_irq(rwlock_t *lock) |
|
{ |
|
local_irq_disable(); |
|
preempt_disable(); |
|
rwlock_acquire_read(&lock->dep_map, 0, 0, _RET_IP_); |
|
LOCK_CONTENDED(lock, do_raw_read_trylock, do_raw_read_lock); |
|
} |
|
|
|
static inline void __raw_read_lock_bh(rwlock_t *lock) |
|
{ |
|
__local_bh_disable_ip(_RET_IP_, SOFTIRQ_LOCK_OFFSET); |
|
rwlock_acquire_read(&lock->dep_map, 0, 0, _RET_IP_); |
|
LOCK_CONTENDED(lock, do_raw_read_trylock, do_raw_read_lock); |
|
} |
|
|
|
static inline unsigned long __raw_write_lock_irqsave(rwlock_t *lock) |
|
{ |
|
unsigned long flags; |
|
|
|
local_irq_save(flags); |
|
preempt_disable(); |
|
rwlock_acquire(&lock->dep_map, 0, 0, _RET_IP_); |
|
LOCK_CONTENDED(lock, do_raw_write_trylock, do_raw_write_lock); |
|
return flags; |
|
} |
|
|
|
static inline void __raw_write_lock_irq(rwlock_t *lock) |
|
{ |
|
local_irq_disable(); |
|
preempt_disable(); |
|
rwlock_acquire(&lock->dep_map, 0, 0, _RET_IP_); |
|
LOCK_CONTENDED(lock, do_raw_write_trylock, do_raw_write_lock); |
|
} |
|
|
|
static inline void __raw_write_lock_bh(rwlock_t *lock) |
|
{ |
|
__local_bh_disable_ip(_RET_IP_, SOFTIRQ_LOCK_OFFSET); |
|
rwlock_acquire(&lock->dep_map, 0, 0, _RET_IP_); |
|
LOCK_CONTENDED(lock, do_raw_write_trylock, do_raw_write_lock); |
|
} |
|
|
|
static inline void __raw_write_lock(rwlock_t *lock) |
|
{ |
|
preempt_disable(); |
|
rwlock_acquire(&lock->dep_map, 0, 0, _RET_IP_); |
|
LOCK_CONTENDED(lock, do_raw_write_trylock, do_raw_write_lock); |
|
} |
|
|
|
static inline void __raw_write_lock_nested(rwlock_t *lock, int subclass) |
|
{ |
|
preempt_disable(); |
|
rwlock_acquire(&lock->dep_map, subclass, 0, _RET_IP_); |
|
LOCK_CONTENDED(lock, do_raw_write_trylock, do_raw_write_lock); |
|
} |
|
|
|
#endif /* !CONFIG_GENERIC_LOCKBREAK || CONFIG_DEBUG_LOCK_ALLOC */ |
|
|
|
static inline void __raw_write_unlock(rwlock_t *lock) |
|
{ |
|
rwlock_release(&lock->dep_map, _RET_IP_); |
|
do_raw_write_unlock(lock); |
|
preempt_enable(); |
|
} |
|
|
|
static inline void __raw_read_unlock(rwlock_t *lock) |
|
{ |
|
rwlock_release(&lock->dep_map, _RET_IP_); |
|
do_raw_read_unlock(lock); |
|
preempt_enable(); |
|
} |
|
|
|
static inline void |
|
__raw_read_unlock_irqrestore(rwlock_t *lock, unsigned long flags) |
|
{ |
|
rwlock_release(&lock->dep_map, _RET_IP_); |
|
do_raw_read_unlock(lock); |
|
local_irq_restore(flags); |
|
preempt_enable(); |
|
} |
|
|
|
static inline void __raw_read_unlock_irq(rwlock_t *lock) |
|
{ |
|
rwlock_release(&lock->dep_map, _RET_IP_); |
|
do_raw_read_unlock(lock); |
|
local_irq_enable(); |
|
preempt_enable(); |
|
} |
|
|
|
static inline void __raw_read_unlock_bh(rwlock_t *lock) |
|
{ |
|
rwlock_release(&lock->dep_map, _RET_IP_); |
|
do_raw_read_unlock(lock); |
|
__local_bh_enable_ip(_RET_IP_, SOFTIRQ_LOCK_OFFSET); |
|
} |
|
|
|
static inline void __raw_write_unlock_irqrestore(rwlock_t *lock, |
|
unsigned long flags) |
|
{ |
|
rwlock_release(&lock->dep_map, _RET_IP_); |
|
do_raw_write_unlock(lock); |
|
local_irq_restore(flags); |
|
preempt_enable(); |
|
} |
|
|
|
static inline void __raw_write_unlock_irq(rwlock_t *lock) |
|
{ |
|
rwlock_release(&lock->dep_map, _RET_IP_); |
|
do_raw_write_unlock(lock); |
|
local_irq_enable(); |
|
preempt_enable(); |
|
} |
|
|
|
static inline void __raw_write_unlock_bh(rwlock_t *lock) |
|
{ |
|
rwlock_release(&lock->dep_map, _RET_IP_); |
|
do_raw_write_unlock(lock); |
|
__local_bh_enable_ip(_RET_IP_, SOFTIRQ_LOCK_OFFSET); |
|
} |
|
|
|
#endif /* __LINUX_RWLOCK_API_SMP_H */
|
|
|