projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| d3cb4871 CL |
1 | #ifndef _ASM_GENERIC_ATOMIC_H |
| 2 | #define _ASM_GENERIC_ATOMIC_H | |
| 3 | /* | |
| 4 | * Copyright (C) 2005 Silicon Graphics, Inc. | |
| 5 | * Christoph Lameter <clameter@sgi.com> | |
| 6 | * | |
| 7 | * Allows to provide arch independent atomic definitions without the need to | |
| 8 | * edit all arch specific atomic.h files. | |
| 9 | */ | |
| 10 | ||
| 5998bf1d | 11 | #include <asm/types.h> |
| d3cb4871 CL |
12 | |
| 13 | /* | |
| 14 | * Suppport for atomic_long_t | |
| 15 | * | |
| 16 | * Casts for parameters are avoided for existing atomic functions in order to | |
| 17 | * avoid issues with cast-as-lval under gcc 4.x and other limitations that the | |
| 18 | * macros of a platform may have. | |
| 19 | */ | |
| 20 | ||
| 21 | #if BITS_PER_LONG == 64 | |
| 22 | ||
| 23 | typedef atomic64_t atomic_long_t; | |
| 24 | ||
| 25 | #define ATOMIC_LONG_INIT(i) ATOMIC64_INIT(i) | |
| 26 | ||
| 27 | static inline long atomic_long_read(atomic_long_t *l) | |
| 28 | { | |
| 29 | atomic64_t *v = (atomic64_t *)l; | |
| 30 | ||
| 31 | return (long)atomic64_read(v); | |
| 32 | } | |
| 33 | ||
| 34 | static inline void atomic_long_set(atomic_long_t *l, long i) | |
| 35 | { | |
| 36 | atomic64_t *v = (atomic64_t *)l; | |
| 37 | ||
| 6b4977ce | 38 | atomic64_set(v, i); |
| d3cb4871 CL |
39 | } |
| 40 | ||
| 41 | static inline void atomic_long_inc(atomic_long_t *l) | |
| 42 | { | |
| 43 | atomic64_t *v = (atomic64_t *)l; | |
| 44 | ||
| 45 | atomic64_inc(v); | |
| 46 | } | |
| 47 | ||
| 48 | static inline void atomic_long_dec(atomic_long_t *l) | |
| 49 | { | |
| 50 | atomic64_t *v = (atomic64_t *)l; | |
| 51 | ||
| 52 | atomic64_dec(v); | |
| 53 | } | |
| 54 | ||
| 55 | static inline void atomic_long_add(long i, atomic_long_t *l) | |
| 56 | { | |
| 57 | atomic64_t *v = (atomic64_t *)l; | |
| 58 | ||
| 59 | atomic64_add(i, v); | |
| 60 | } | |
| 61 | ||
| 62 | static inline void atomic_long_sub(long i, atomic_long_t *l) | |
| 63 | { | |
| 64 | atomic64_t *v = (atomic64_t *)l; | |
| 65 | ||
| 66 | atomic64_sub(i, v); | |
| 67 | } | |
| 68 | ||
| 69 | #else | |
| 70 | ||
| 71 | typedef atomic_t atomic_long_t; | |
| 72 | ||
| 73 | #define ATOMIC_LONG_INIT(i) ATOMIC_INIT(i) | |
| 74 | static inline long atomic_long_read(atomic_long_t *l) | |
| 75 | { | |
| 76 | atomic_t *v = (atomic_t *)l; | |
| 77 | ||
| 78 | return (long)atomic_read(v); | |
| 79 | } | |
| 80 | ||
| 81 | static inline void atomic_long_set(atomic_long_t *l, long i) | |
| 82 | { | |
| 83 | atomic_t *v = (atomic_t *)l; | |
| 84 | ||
| 85 | atomic_set(v, i); | |
| 86 | } | |
| 87 | ||
| 88 | static inline void atomic_long_inc(atomic_long_t *l) | |
| 89 | { | |
| 90 | atomic_t *v = (atomic_t *)l; | |
| 91 | ||
| 92 | atomic_inc(v); | |
| 93 | } | |
| 94 | ||
| 95 | static inline void atomic_long_dec(atomic_long_t *l) | |
| 96 | { | |
| 97 | atomic_t *v = (atomic_t *)l; | |
| 98 | ||
| 99 | atomic_dec(v); | |
| 100 | } | |
| 101 | ||
| 102 | static inline void atomic_long_add(long i, atomic_long_t *l) | |
| 103 | { | |
| 104 | atomic_t *v = (atomic_t *)l; | |
| 105 | ||
| 106 | atomic_add(i, v); | |
| 107 | } | |
| 108 | ||
| 109 | static inline void atomic_long_sub(long i, atomic_long_t *l) | |
| 110 | { | |
| 111 | atomic_t *v = (atomic_t *)l; | |
| 112 | ||
| 113 | atomic_sub(i, v); | |
| 114 | } | |
| 115 | ||
| 116 | #endif | |
| 117 | #endif |