mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
synced 2025-10-31 20:42:39 +00:00
fd3f8984f6
Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Adrian Bunk <bunk@kernel.org>
82 lines
3.0 KiB
C
82 lines
3.0 KiB
C
#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_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 { preempt_disable(); __acquire(lock); (void)(lock); } while (0)
|
|
|
|
#define __LOCK_BH(lock) \
|
|
do { local_bh_disable(); __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 { preempt_enable(); __release(lock); (void)(lock); } while (0)
|
|
|
|
#define __UNLOCK_BH(lock) \
|
|
do { preempt_enable_no_resched(); local_bh_enable(); __release(lock); (void)(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 _spin_lock(lock) __LOCK(lock)
|
|
#define _spin_lock_nested(lock, subclass) __LOCK(lock)
|
|
#define _read_lock(lock) __LOCK(lock)
|
|
#define _write_lock(lock) __LOCK(lock)
|
|
#define _spin_lock_bh(lock) __LOCK_BH(lock)
|
|
#define _read_lock_bh(lock) __LOCK_BH(lock)
|
|
#define _write_lock_bh(lock) __LOCK_BH(lock)
|
|
#define _spin_lock_irq(lock) __LOCK_IRQ(lock)
|
|
#define _read_lock_irq(lock) __LOCK_IRQ(lock)
|
|
#define _write_lock_irq(lock) __LOCK_IRQ(lock)
|
|
#define _spin_lock_irqsave(lock, flags) __LOCK_IRQSAVE(lock, flags)
|
|
#define _read_lock_irqsave(lock, flags) __LOCK_IRQSAVE(lock, flags)
|
|
#define _write_lock_irqsave(lock, flags) __LOCK_IRQSAVE(lock, flags)
|
|
#define _spin_trylock(lock) ({ __LOCK(lock); 1; })
|
|
#define _read_trylock(lock) ({ __LOCK(lock); 1; })
|
|
#define _write_trylock(lock) ({ __LOCK(lock); 1; })
|
|
#define _spin_trylock_bh(lock) ({ __LOCK_BH(lock); 1; })
|
|
#define _spin_unlock(lock) __UNLOCK(lock)
|
|
#define _read_unlock(lock) __UNLOCK(lock)
|
|
#define _write_unlock(lock) __UNLOCK(lock)
|
|
#define _spin_unlock_bh(lock) __UNLOCK_BH(lock)
|
|
#define _write_unlock_bh(lock) __UNLOCK_BH(lock)
|
|
#define _read_unlock_bh(lock) __UNLOCK_BH(lock)
|
|
#define _spin_unlock_irq(lock) __UNLOCK_IRQ(lock)
|
|
#define _read_unlock_irq(lock) __UNLOCK_IRQ(lock)
|
|
#define _write_unlock_irq(lock) __UNLOCK_IRQ(lock)
|
|
#define _spin_unlock_irqrestore(lock, flags) __UNLOCK_IRQRESTORE(lock, flags)
|
|
#define _read_unlock_irqrestore(lock, flags) __UNLOCK_IRQRESTORE(lock, flags)
|
|
#define _write_unlock_irqrestore(lock, flags) __UNLOCK_IRQRESTORE(lock, flags)
|
|
|
|
#endif /* __LINUX_SPINLOCK_API_UP_H */
|