Viewing file:  spinlock_api_up.h (3.31 KB) -rw-r--r--
Select action/file-type:
 (+) |  (+) |  (+) | Code (+) | Session (+) |  (+) | SDB (+) |  (+) |  (+) |  (+) |  (+) |  (+) |
#ifndef __LINUX_SPINLOCK_API_UP_H
#define __LINUX_SPINLOCK_API_UP_H
#ifndef __LINUX_SPINLOCK_H
# error "please don't include this file directly"
#endif
/*
* include/linux/spinlock_api_up.h
*
* spinlock API implementation on UP-nondebug (inlined implementation)
*
* portions Copyright 2005, Red Hat, Inc., Ingo Molnar
* Released under the General Public License (GPL).
*/
#define in_lock_functions(ADDR) 0
#define assert_raw_spin_locked(lock) do { (void)(lock); } while (0)
/*
* In the UP-nondebug case there's no real locking going on, so the
* only thing we have to do is to keep the preempt counts and irq
* flags straight, to suppress compiler warnings of unused lock
* variables, and to add the proper checker annotations:
*/
#define ___LOCK(lock) \
do { __acquire(lock); (void)(lock); } while (0)
#define __LOCK(lock) \
do { preempt_disable(); ___LOCK(lock); } while (0)
#define __LOCK_BH(lock) \
do { __local_bh_disable_ip(_THIS_IP_, SOFTIRQ_LOCK_OFFSET); ___LOCK(lock); } while (0)
#define __LOCK_IRQ(lock) \
do { local_irq_disable(); __LOCK(lock); } while (0)
#define __LOCK_IRQSAVE(lock, flags) \
do { local_irq_save(flags); __LOCK(lock); } while (0)
#define ___UNLOCK(lock) \
do { __release(lock); (void)(lock); } while (0)
#define __UNLOCK(lock) \
do { preempt_enable(); ___UNLOCK(lock); } while (0)
#define __UNLOCK_BH(lock) \
do { __local_bh_enable_ip(_THIS_IP_, SOFTIRQ_LOCK_OFFSET); \
___UNLOCK(lock); } while (0)
#define __UNLOCK_IRQ(lock) \
do { local_irq_enable(); __UNLOCK(lock); } while (0)
#define __UNLOCK_IRQRESTORE(lock, flags) \
do { local_irq_restore(flags); __UNLOCK(lock); } while (0)
#define _raw_spin_lock(lock) __LOCK(lock)
#define _raw_spin_lock_nested(lock, subclass) __LOCK(lock)
#define _raw_read_lock(lock) __LOCK(lock)
#define _raw_write_lock(lock) __LOCK(lock)
#define _raw_spin_lock_bh(lock) __LOCK_BH(lock)
#define _raw_read_lock_bh(lock) __LOCK_BH(lock)
#define _raw_write_lock_bh(lock) __LOCK_BH(lock)
#define _raw_spin_lock_irq(lock) __LOCK_IRQ(lock)
#define _raw_read_lock_irq(lock) __LOCK_IRQ(lock)
#define _raw_write_lock_irq(lock) __LOCK_IRQ(lock)
#define _raw_spin_lock_irqsave(lock, flags) __LOCK_IRQSAVE(lock, flags)
#define _raw_read_lock_irqsave(lock, flags) __LOCK_IRQSAVE(lock, flags)
#define _raw_write_lock_irqsave(lock, flags) __LOCK_IRQSAVE(lock, flags)
#define _raw_spin_trylock(lock) ({ __LOCK(lock); 1; })
#define _raw_read_trylock(lock) ({ __LOCK(lock); 1; })
#define _raw_write_trylock(lock) ({ __LOCK(lock); 1; })
#define _raw_spin_trylock_bh(lock) ({ __LOCK_BH(lock); 1; })
#define _raw_spin_unlock(lock) __UNLOCK(lock)
#define _raw_read_unlock(lock) __UNLOCK(lock)
#define _raw_write_unlock(lock) __UNLOCK(lock)
#define _raw_spin_unlock_bh(lock) __UNLOCK_BH(lock)
#define _raw_write_unlock_bh(lock) __UNLOCK_BH(lock)
#define _raw_read_unlock_bh(lock) __UNLOCK_BH(lock)
#define _raw_spin_unlock_irq(lock) __UNLOCK_IRQ(lock)
#define _raw_read_unlock_irq(lock) __UNLOCK_IRQ(lock)
#define _raw_write_unlock_irq(lock) __UNLOCK_IRQ(lock)
#define _raw_spin_unlock_irqrestore(lock, flags) \
__UNLOCK_IRQRESTORE(lock, flags)
#define _raw_read_unlock_irqrestore(lock, flags) \
__UNLOCK_IRQRESTORE(lock, flags)
#define _raw_write_unlock_irqrestore(lock, flags) \
__UNLOCK_IRQRESTORE(lock, flags)
#endif /* __LINUX_SPINLOCK_API_UP_H */
|