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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_raw_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 suppress 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(); \ |
44 | __release(lock); (void)(lock); } while (0) |
45 | |
46 | #define __UNLOCK_IRQ(lock) \ |
47 | do { local_irq_enable(); __UNLOCK(lock); } while (0) |
48 | |
49 | #define __UNLOCK_IRQRESTORE(lock, flags) \ |
50 | do { local_irq_restore(flags); __UNLOCK(lock); } while (0) |
51 | |
52 | #define _raw_spin_lock(lock) __LOCK(lock) |
53 | #define _raw_spin_lock_nested(lock, subclass) __LOCK(lock) |
54 | #define _raw_read_lock(lock) __LOCK(lock) |
55 | #define _raw_write_lock(lock) __LOCK(lock) |
56 | #define _raw_spin_lock_bh(lock) __LOCK_BH(lock) |
57 | #define _raw_read_lock_bh(lock) __LOCK_BH(lock) |
58 | #define _raw_write_lock_bh(lock) __LOCK_BH(lock) |
59 | #define _raw_spin_lock_irq(lock) __LOCK_IRQ(lock) |
60 | #define _raw_read_lock_irq(lock) __LOCK_IRQ(lock) |
61 | #define _raw_write_lock_irq(lock) __LOCK_IRQ(lock) |
62 | #define _raw_spin_lock_irqsave(lock, flags) __LOCK_IRQSAVE(lock, flags) |
63 | #define _raw_read_lock_irqsave(lock, flags) __LOCK_IRQSAVE(lock, flags) |
64 | #define _raw_write_lock_irqsave(lock, flags) __LOCK_IRQSAVE(lock, flags) |
65 | #define _raw_spin_trylock(lock) ({ __LOCK(lock); 1; }) |
66 | #define _raw_read_trylock(lock) ({ __LOCK(lock); 1; }) |
67 | #define _raw_write_trylock(lock) ({ __LOCK(lock); 1; }) |
68 | #define _raw_spin_trylock_bh(lock) ({ __LOCK_BH(lock); 1; }) |
69 | #define _raw_spin_unlock(lock) __UNLOCK(lock) |
70 | #define _raw_read_unlock(lock) __UNLOCK(lock) |
71 | #define _raw_write_unlock(lock) __UNLOCK(lock) |
72 | #define _raw_spin_unlock_bh(lock) __UNLOCK_BH(lock) |
73 | #define _raw_write_unlock_bh(lock) __UNLOCK_BH(lock) |
74 | #define _raw_read_unlock_bh(lock) __UNLOCK_BH(lock) |
75 | #define _raw_spin_unlock_irq(lock) __UNLOCK_IRQ(lock) |
76 | #define _raw_read_unlock_irq(lock) __UNLOCK_IRQ(lock) |
77 | #define _raw_write_unlock_irq(lock) __UNLOCK_IRQ(lock) |
78 | #define _raw_spin_unlock_irqrestore(lock, flags) \ |
79 | __UNLOCK_IRQRESTORE(lock, flags) |
80 | #define _raw_read_unlock_irqrestore(lock, flags) \ |
81 | __UNLOCK_IRQRESTORE(lock, flags) |
82 | #define _raw_write_unlock_irqrestore(lock, flags) \ |
83 | __UNLOCK_IRQRESTORE(lock, flags) |
84 | |
85 | #endif /* __LINUX_SPINLOCK_API_UP_H */ |
86 |
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