diff options
Diffstat (limited to 'arch/microblaze/include/asm/atomic.h')
-rw-r--r-- | arch/microblaze/include/asm/atomic.h | 101 |
1 files changed, 1 insertions, 100 deletions
diff --git a/arch/microblaze/include/asm/atomic.h b/arch/microblaze/include/asm/atomic.h index 0de612ad7cb2..6d2e1d418be7 100644 --- a/arch/microblaze/include/asm/atomic.h +++ b/arch/microblaze/include/asm/atomic.h | |||
@@ -1,95 +1,7 @@ | |||
1 | /* | ||
2 | * Copyright (C) 2006 Atmark Techno, Inc. | ||
3 | * | ||
4 | * This file is subject to the terms and conditions of the GNU General Public | ||
5 | * License. See the file "COPYING" in the main directory of this archive | ||
6 | * for more details. | ||
7 | */ | ||
8 | |||
9 | #ifndef _ASM_MICROBLAZE_ATOMIC_H | 1 | #ifndef _ASM_MICROBLAZE_ATOMIC_H |
10 | #define _ASM_MICROBLAZE_ATOMIC_H | 2 | #define _ASM_MICROBLAZE_ATOMIC_H |
11 | 3 | ||
12 | #include <linux/types.h> | 4 | #include <asm-generic/atomic.h> |
13 | #include <linux/compiler.h> /* likely */ | ||
14 | #include <asm/system.h> /* local_irq_XXX and friends */ | ||
15 | |||
16 | #define ATOMIC_INIT(i) { (i) } | ||
17 | #define atomic_read(v) ((v)->counter) | ||
18 | #define atomic_set(v, i) (((v)->counter) = (i)) | ||
19 | |||
20 | #define atomic_inc(v) (atomic_add_return(1, (v))) | ||
21 | #define atomic_dec(v) (atomic_sub_return(1, (v))) | ||
22 | |||
23 | #define atomic_add(i, v) (atomic_add_return(i, (v))) | ||
24 | #define atomic_sub(i, v) (atomic_sub_return(i, (v))) | ||
25 | |||
26 | #define atomic_inc_return(v) (atomic_add_return(1, (v))) | ||
27 | #define atomic_dec_return(v) (atomic_sub_return(1, (v))) | ||
28 | |||
29 | #define atomic_inc_and_test(v) (atomic_add_return(1, (v)) == 0) | ||
30 | #define atomic_dec_and_test(v) (atomic_sub_return(1, (v)) == 0) | ||
31 | |||
32 | #define atomic_inc_not_zero(v) (atomic_add_unless((v), 1, 0)) | ||
33 | |||
34 | #define atomic_sub_and_test(i, v) (atomic_sub_return((i), (v)) == 0) | ||
35 | |||
36 | static inline int atomic_cmpxchg(atomic_t *v, int old, int new) | ||
37 | { | ||
38 | int ret; | ||
39 | unsigned long flags; | ||
40 | |||
41 | local_irq_save(flags); | ||
42 | ret = v->counter; | ||
43 | if (likely(ret == old)) | ||
44 | v->counter = new; | ||
45 | local_irq_restore(flags); | ||
46 | |||
47 | return ret; | ||
48 | } | ||
49 | |||
50 | static inline int atomic_add_unless(atomic_t *v, int a, int u) | ||
51 | { | ||
52 | int c, old; | ||
53 | |||
54 | c = atomic_read(v); | ||
55 | while (c != u && (old = atomic_cmpxchg((v), c, c + a)) != c) | ||
56 | c = old; | ||
57 | return c != u; | ||
58 | } | ||
59 | |||
60 | static inline void atomic_clear_mask(unsigned long mask, unsigned long *addr) | ||
61 | { | ||
62 | unsigned long flags; | ||
63 | |||
64 | local_irq_save(flags); | ||
65 | *addr &= ~mask; | ||
66 | local_irq_restore(flags); | ||
67 | } | ||
68 | |||
69 | /** | ||
70 | * atomic_add_return - add and return | ||
71 | * @i: integer value to add | ||
72 | * @v: pointer of type atomic_t | ||
73 | * | ||
74 | * Atomically adds @i to @v and returns @i + @v | ||
75 | */ | ||
76 | static inline int atomic_add_return(int i, atomic_t *v) | ||
77 | { | ||
78 | unsigned long flags; | ||
79 | int val; | ||
80 | |||
81 | local_irq_save(flags); | ||
82 | val = v->counter; | ||
83 | v->counter = val += i; | ||
84 | local_irq_restore(flags); | ||
85 | |||
86 | return val; | ||
87 | } | ||
88 | |||
89 | static inline int atomic_sub_return(int i, atomic_t *v) | ||
90 | { | ||
91 | return atomic_add_return(-i, v); | ||
92 | } | ||
93 | 5 | ||
94 | /* | 6 | /* |
95 | * Atomically test *v and decrement if it is greater than 0. | 7 | * Atomically test *v and decrement if it is greater than 0. |
@@ -109,15 +21,4 @@ static inline int atomic_dec_if_positive(atomic_t *v) | |||
109 | return res; | 21 | return res; |
110 | } | 22 | } |
111 | 23 | ||
112 | #define atomic_add_negative(a, v) (atomic_add_return((a), (v)) < 0) | ||
113 | #define atomic_xchg(v, new) (xchg(&((v)->counter), new)) | ||
114 | |||
115 | /* Atomic operations are already serializing */ | ||
116 | #define smp_mb__before_atomic_dec() barrier() | ||
117 | #define smp_mb__after_atomic_dec() barrier() | ||
118 | #define smp_mb__before_atomic_inc() barrier() | ||
119 | #define smp_mb__after_atomic_inc() barrier() | ||
120 | |||
121 | #include <asm-generic/atomic-long.h> | ||
122 | |||
123 | #endif /* _ASM_MICROBLAZE_ATOMIC_H */ | 24 | #endif /* _ASM_MICROBLAZE_ATOMIC_H */ |