1#ifndef __LINUX_SPINLOCK_API_UP_H 2#define __LINUX_SPINLOCK_API_UP_H 3 4#ifndef __LINUX_SPINLOCK_H 5# error "please don't include this file directly" 6#endif 7 8/* 9 * include/linux/spinlock_api_up.h 10 * 11 * spinlock API implementation on UP-nondebug (inlined implementation) 12 * 13 * portions Copyright 2005, Red Hat, Inc., Ingo Molnar 14 * Released under the General Public License (GPL). 15 */ 16 17#define in_lock_functions(ADDR) 0 18 19#define assert_spin_locked(lock) do { (void)(lock); } while (0) 20 21/* 22 * In the UP-nondebug case there's no real locking going on, so the 23 * only thing we have to do is to keep the preempt counts and irq 24 * flags straight, to supress compiler warnings of unused lock 25 * variables, and to add the proper checker annotations: 26 */ 27#define __LOCK(lock) \ 28 do { preempt_disable(); __acquire(lock); (void)(lock); } while (0) 29 30#define __LOCK_BH(lock) \ 31 do { local_bh_disable(); __LOCK(lock); } while (0) 32 33#define __LOCK_IRQ(lock) \ 34 do { local_irq_disable(); __LOCK(lock); } while (0) 35 36#define __LOCK_IRQSAVE(lock, flags) \ 37 do { local_irq_save(flags); __LOCK(lock); } while (0) 38 39#define __UNLOCK(lock) \ 40 do { preempt_enable(); __release(lock); (void)(lock); } while (0) 41 42#define __UNLOCK_BH(lock) \ 43 do { preempt_enable_no_resched(); local_bh_enable(); __release(lock); (void)(lock); } while (0) 44 45#define __UNLOCK_IRQ(lock) \ 46 do { local_irq_enable(); __UNLOCK(lock); } while (0) 47 48#define __UNLOCK_IRQRESTORE(lock, flags) \ 49 do { local_irq_restore(flags); __UNLOCK(lock); } while (0) 50 51#define _spin_lock(lock) __LOCK(lock) 52#define _spin_lock_nested(lock, subclass) __LOCK(lock) 53#define _read_lock(lock) __LOCK(lock) 54#define _write_lock(lock) __LOCK(lock) 55#define _spin_lock_bh(lock) __LOCK_BH(lock) 56#define _read_lock_bh(lock) __LOCK_BH(lock) 57#define _write_lock_bh(lock) __LOCK_BH(lock) 58#define _spin_lock_irq(lock) __LOCK_IRQ(lock) 59#define _read_lock_irq(lock) __LOCK_IRQ(lock) 60#define _write_lock_irq(lock) __LOCK_IRQ(lock) 61#define _spin_lock_irqsave(lock, flags) __LOCK_IRQSAVE(lock, flags) 62#define _read_lock_irqsave(lock, flags) __LOCK_IRQSAVE(lock, flags) 63#define _write_lock_irqsave(lock, flags) __LOCK_IRQSAVE(lock, flags) 64#define _spin_trylock(lock) ({ __LOCK(lock); 1; }) 65#define _read_trylock(lock) ({ __LOCK(lock); 1; }) 66#define _write_trylock(lock) ({ __LOCK(lock); 1; }) 67#define _spin_trylock_bh(lock) ({ __LOCK_BH(lock); 1; }) 68#define _spin_unlock(lock) __UNLOCK(lock) 69#define _read_unlock(lock) __UNLOCK(lock) 70#define _write_unlock(lock) __UNLOCK(lock) 71#define _spin_unlock_bh(lock) __UNLOCK_BH(lock) 72#define _write_unlock_bh(lock) __UNLOCK_BH(lock) 73#define _read_unlock_bh(lock) __UNLOCK_BH(lock) 74#define _spin_unlock_irq(lock) __UNLOCK_IRQ(lock) 75#define _read_unlock_irq(lock) __UNLOCK_IRQ(lock) 76#define _write_unlock_irq(lock) __UNLOCK_IRQ(lock) 77#define _spin_unlock_irqrestore(lock, flags) __UNLOCK_IRQRESTORE(lock, flags) 78#define _read_unlock_irqrestore(lock, flags) __UNLOCK_IRQRESTORE(lock, flags) 79#define _write_unlock_irqrestore(lock, flags) __UNLOCK_IRQRESTORE(lock, flags) 80 81#endif /* __LINUX_SPINLOCK_API_UP_H */ 82