diff options
Diffstat (limited to 'include/asm-sparc/atomic_64.h')
| -rw-r--r-- | include/asm-sparc/atomic_64.h | 128 |
1 files changed, 0 insertions, 128 deletions
diff --git a/include/asm-sparc/atomic_64.h b/include/asm-sparc/atomic_64.h deleted file mode 100644 index 2c71ec4a3b18..000000000000 --- a/include/asm-sparc/atomic_64.h +++ /dev/null | |||
| @@ -1,128 +0,0 @@ | |||
| 1 | /* atomic.h: Thankfully the V9 is at least reasonable for this | ||
| 2 | * stuff. | ||
| 3 | * | ||
| 4 | * Copyright (C) 1996, 1997, 2000 David S. Miller (davem@redhat.com) | ||
| 5 | */ | ||
| 6 | |||
| 7 | #ifndef __ARCH_SPARC64_ATOMIC__ | ||
| 8 | #define __ARCH_SPARC64_ATOMIC__ | ||
| 9 | |||
| 10 | #include <linux/types.h> | ||
| 11 | #include <asm/system.h> | ||
| 12 | |||
| 13 | typedef struct { volatile int counter; } atomic_t; | ||
| 14 | typedef struct { volatile __s64 counter; } atomic64_t; | ||
| 15 | |||
| 16 | #define ATOMIC_INIT(i) { (i) } | ||
| 17 | #define ATOMIC64_INIT(i) { (i) } | ||
| 18 | |||
| 19 | #define atomic_read(v) ((v)->counter) | ||
| 20 | #define atomic64_read(v) ((v)->counter) | ||
| 21 | |||
| 22 | #define atomic_set(v, i) (((v)->counter) = i) | ||
| 23 | #define atomic64_set(v, i) (((v)->counter) = i) | ||
| 24 | |||
| 25 | extern void atomic_add(int, atomic_t *); | ||
| 26 | extern void atomic64_add(int, atomic64_t *); | ||
| 27 | extern void atomic_sub(int, atomic_t *); | ||
| 28 | extern void atomic64_sub(int, atomic64_t *); | ||
| 29 | |||
| 30 | extern int atomic_add_ret(int, atomic_t *); | ||
| 31 | extern int atomic64_add_ret(int, atomic64_t *); | ||
| 32 | extern int atomic_sub_ret(int, atomic_t *); | ||
| 33 | extern int atomic64_sub_ret(int, atomic64_t *); | ||
| 34 | |||
| 35 | #define atomic_dec_return(v) atomic_sub_ret(1, v) | ||
| 36 | #define atomic64_dec_return(v) atomic64_sub_ret(1, v) | ||
| 37 | |||
| 38 | #define atomic_inc_return(v) atomic_add_ret(1, v) | ||
| 39 | #define atomic64_inc_return(v) atomic64_add_ret(1, v) | ||
| 40 | |||
| 41 | #define atomic_sub_return(i, v) atomic_sub_ret(i, v) | ||
| 42 | #define atomic64_sub_return(i, v) atomic64_sub_ret(i, v) | ||
| 43 | |||
| 44 | #define atomic_add_return(i, v) atomic_add_ret(i, v) | ||
| 45 | #define atomic64_add_return(i, v) atomic64_add_ret(i, v) | ||
| 46 | |||
| 47 | /* | ||
| 48 | * atomic_inc_and_test - increment and test | ||
| 49 | * @v: pointer of type atomic_t | ||
| 50 | * | ||
| 51 | * Atomically increments @v by 1 | ||
| 52 | * and returns true if the result is zero, or false for all | ||
| 53 | * other cases. | ||
| 54 | */ | ||
| 55 | #define atomic_inc_and_test(v) (atomic_inc_return(v) == 0) | ||
| 56 | #define atomic64_inc_and_test(v) (atomic64_inc_return(v) == 0) | ||
| 57 | |||
| 58 | #define atomic_sub_and_test(i, v) (atomic_sub_ret(i, v) == 0) | ||
| 59 | #define atomic64_sub_and_test(i, v) (atomic64_sub_ret(i, v) == 0) | ||
| 60 | |||
| 61 | #define atomic_dec_and_test(v) (atomic_sub_ret(1, v) == 0) | ||
| 62 | #define atomic64_dec_and_test(v) (atomic64_sub_ret(1, v) == 0) | ||
| 63 | |||
| 64 | #define atomic_inc(v) atomic_add(1, v) | ||
| 65 | #define atomic64_inc(v) atomic64_add(1, v) | ||
| 66 | |||
| 67 | #define atomic_dec(v) atomic_sub(1, v) | ||
| 68 | #define atomic64_dec(v) atomic64_sub(1, v) | ||
| 69 | |||
| 70 | #define atomic_add_negative(i, v) (atomic_add_ret(i, v) < 0) | ||
| 71 | #define atomic64_add_negative(i, v) (atomic64_add_ret(i, v) < 0) | ||
| 72 | |||
| 73 | #define atomic_cmpxchg(v, o, n) (cmpxchg(&((v)->counter), (o), (n))) | ||
| 74 | #define atomic_xchg(v, new) (xchg(&((v)->counter), new)) | ||
| 75 | |||
| 76 | static inline int atomic_add_unless(atomic_t *v, int a, int u) | ||
| 77 | { | ||
| 78 | int c, old; | ||
| 79 | c = atomic_read(v); | ||
| 80 | for (;;) { | ||
| 81 | if (unlikely(c == (u))) | ||
| 82 | break; | ||
| 83 | old = atomic_cmpxchg((v), c, c + (a)); | ||
| 84 | if (likely(old == c)) | ||
| 85 | break; | ||
| 86 | c = old; | ||
| 87 | } | ||
| 88 | return c != (u); | ||
| 89 | } | ||
| 90 | |||
| 91 | #define atomic_inc_not_zero(v) atomic_add_unless((v), 1, 0) | ||
| 92 | |||
| 93 | #define atomic64_cmpxchg(v, o, n) \ | ||
| 94 | ((__typeof__((v)->counter))cmpxchg(&((v)->counter), (o), (n))) | ||
| 95 | #define atomic64_xchg(v, new) (xchg(&((v)->counter), new)) | ||
| 96 | |||
| 97 | static inline int atomic64_add_unless(atomic64_t *v, long a, long u) | ||
| 98 | { | ||
| 99 | long c, old; | ||
| 100 | c = atomic64_read(v); | ||
| 101 | for (;;) { | ||
| 102 | if (unlikely(c == (u))) | ||
| 103 | break; | ||
| 104 | old = atomic64_cmpxchg((v), c, c + (a)); | ||
| 105 | if (likely(old == c)) | ||
| 106 | break; | ||
| 107 | c = old; | ||
| 108 | } | ||
| 109 | return c != (u); | ||
| 110 | } | ||
| 111 | |||
| 112 | #define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0) | ||
| 113 | |||
| 114 | /* Atomic operations are already serializing */ | ||
| 115 | #ifdef CONFIG_SMP | ||
| 116 | #define smp_mb__before_atomic_dec() membar_storeload_loadload(); | ||
| 117 | #define smp_mb__after_atomic_dec() membar_storeload_storestore(); | ||
| 118 | #define smp_mb__before_atomic_inc() membar_storeload_loadload(); | ||
| 119 | #define smp_mb__after_atomic_inc() membar_storeload_storestore(); | ||
| 120 | #else | ||
| 121 | #define smp_mb__before_atomic_dec() barrier() | ||
| 122 | #define smp_mb__after_atomic_dec() barrier() | ||
| 123 | #define smp_mb__before_atomic_inc() barrier() | ||
| 124 | #define smp_mb__after_atomic_inc() barrier() | ||
| 125 | #endif | ||
| 126 | |||
| 127 | #include <asm-generic/atomic.h> | ||
| 128 | #endif /* !(__ARCH_SPARC64_ATOMIC__) */ | ||
