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Ingo Molnarfb1c8f92005-09-10 00:25:56 -07001#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
Joe Perchesfd3f8982008-02-03 17:45:46 +020024 * flags straight, to suppress compiler warnings of unused lock
Ingo Molnarfb1c8f92005-09-10 00:25:56 -070025 * 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)
Ingo Molnar8a25d5d2006-07-03 00:24:54 -070052#define _spin_lock_nested(lock, subclass) __LOCK(lock)
Ingo Molnarfb1c8f92005-09-10 00:25:56 -070053#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 */