diff options
| -rw-r--r-- | arch/tile/include/asm/atomic.h | 52 | ||||
| -rw-r--r-- | arch/tile/include/asm/atomic_32.h | 85 | ||||
| -rw-r--r-- | arch/tile/include/asm/atomic_64.h | 42 | ||||
| -rw-r--r-- | arch/tile/include/asm/bitops_32.h | 2 | ||||
| -rw-r--r-- | arch/tile/include/asm/bitops_64.h | 8 | ||||
| -rw-r--r-- | arch/tile/include/asm/cmpxchg.h | 97 | ||||
| -rw-r--r-- | arch/tile/lib/atomic_32.c | 34 |
7 files changed, 156 insertions, 164 deletions
diff --git a/arch/tile/include/asm/atomic.h b/arch/tile/include/asm/atomic.h index e71387ab20ca..d385eaadece7 100644 --- a/arch/tile/include/asm/atomic.h +++ b/arch/tile/include/asm/atomic.h | |||
| @@ -114,6 +114,32 @@ static inline int atomic_read(const atomic_t *v) | |||
| 114 | #define atomic_inc_and_test(v) (atomic_inc_return(v) == 0) | 114 | #define atomic_inc_and_test(v) (atomic_inc_return(v) == 0) |
| 115 | 115 | ||
| 116 | /** | 116 | /** |
| 117 | * atomic_xchg - atomically exchange contents of memory with a new value | ||
| 118 | * @v: pointer of type atomic_t | ||
| 119 | * @i: integer value to store in memory | ||
| 120 | * | ||
| 121 | * Atomically sets @v to @i and returns old @v | ||
| 122 | */ | ||
| 123 | static inline int atomic_xchg(atomic_t *v, int n) | ||
| 124 | { | ||
| 125 | return xchg(&v->counter, n); | ||
| 126 | } | ||
| 127 | |||
| 128 | /** | ||
| 129 | * atomic_cmpxchg - atomically exchange contents of memory if it matches | ||
| 130 | * @v: pointer of type atomic_t | ||
| 131 | * @o: old value that memory should have | ||
| 132 | * @n: new value to write to memory if it matches | ||
| 133 | * | ||
| 134 | * Atomically checks if @v holds @o and replaces it with @n if so. | ||
| 135 | * Returns the old value at @v. | ||
| 136 | */ | ||
| 137 | static inline int atomic_cmpxchg(atomic_t *v, int o, int n) | ||
| 138 | { | ||
| 139 | return cmpxchg(&v->counter, o, n); | ||
| 140 | } | ||
| 141 | |||
| 142 | /** | ||
| 117 | * atomic_add_negative - add and test if negative | 143 | * atomic_add_negative - add and test if negative |
| 118 | * @v: pointer of type atomic_t | 144 | * @v: pointer of type atomic_t |
| 119 | * @i: integer value to add | 145 | * @i: integer value to add |
| @@ -133,6 +159,32 @@ static inline int atomic_read(const atomic_t *v) | |||
| 133 | 159 | ||
| 134 | #ifndef __ASSEMBLY__ | 160 | #ifndef __ASSEMBLY__ |
| 135 | 161 | ||
| 162 | /** | ||
| 163 | * atomic64_xchg - atomically exchange contents of memory with a new value | ||
| 164 | * @v: pointer of type atomic64_t | ||
| 165 | * @i: integer value to store in memory | ||
| 166 | * | ||
| 167 | * Atomically sets @v to @i and returns old @v | ||
| 168 | */ | ||
| 169 | static inline u64 atomic64_xchg(atomic64_t *v, u64 n) | ||
| 170 | { | ||
| 171 | return xchg64(&v->counter, n); | ||
| 172 | } | ||
| 173 | |||
| 174 | /** | ||
| 175 | * atomic64_cmpxchg - atomically exchange contents of memory if it matches | ||
| 176 | * @v: pointer of type atomic64_t | ||
| 177 | * @o: old value that memory should have | ||
| 178 | * @n: new value to write to memory if it matches | ||
| 179 | * | ||
| 180 | * Atomically checks if @v holds @o and replaces it with @n if so. | ||
| 181 | * Returns the old value at @v. | ||
| 182 | */ | ||
| 183 | static inline u64 atomic64_cmpxchg(atomic64_t *v, u64 o, u64 n) | ||
| 184 | { | ||
| 185 | return cmpxchg64(&v->counter, o, n); | ||
| 186 | } | ||
| 187 | |||
| 136 | static inline long long atomic64_dec_if_positive(atomic64_t *v) | 188 | static inline long long atomic64_dec_if_positive(atomic64_t *v) |
| 137 | { | 189 | { |
| 138 | long long c, old, dec; | 190 | long long c, old, dec; |
diff --git a/arch/tile/include/asm/atomic_32.h b/arch/tile/include/asm/atomic_32.h index 96156f5ba640..0d0395b1b152 100644 --- a/arch/tile/include/asm/atomic_32.h +++ b/arch/tile/include/asm/atomic_32.h | |||
| @@ -22,40 +22,6 @@ | |||
| 22 | 22 | ||
| 23 | #ifndef __ASSEMBLY__ | 23 | #ifndef __ASSEMBLY__ |
| 24 | 24 | ||
| 25 | /* Tile-specific routines to support <linux/atomic.h>. */ | ||
| 26 | int _atomic_xchg(atomic_t *v, int n); | ||
| 27 | int _atomic_xchg_add(atomic_t *v, int i); | ||
| 28 | int _atomic_xchg_add_unless(atomic_t *v, int a, int u); | ||
| 29 | int _atomic_cmpxchg(atomic_t *v, int o, int n); | ||
| 30 | |||
| 31 | /** | ||
| 32 | * atomic_xchg - atomically exchange contents of memory with a new value | ||
| 33 | * @v: pointer of type atomic_t | ||
| 34 | * @i: integer value to store in memory | ||
| 35 | * | ||
| 36 | * Atomically sets @v to @i and returns old @v | ||
| 37 | */ | ||
| 38 | static inline int atomic_xchg(atomic_t *v, int n) | ||
| 39 | { | ||
| 40 | smp_mb(); /* barrier for proper semantics */ | ||
| 41 | return _atomic_xchg(v, n); | ||
| 42 | } | ||
| 43 | |||
| 44 | /** | ||
| 45 | * atomic_cmpxchg - atomically exchange contents of memory if it matches | ||
| 46 | * @v: pointer of type atomic_t | ||
| 47 | * @o: old value that memory should have | ||
| 48 | * @n: new value to write to memory if it matches | ||
| 49 | * | ||
| 50 | * Atomically checks if @v holds @o and replaces it with @n if so. | ||
| 51 | * Returns the old value at @v. | ||
| 52 | */ | ||
| 53 | static inline int atomic_cmpxchg(atomic_t *v, int o, int n) | ||
| 54 | { | ||
| 55 | smp_mb(); /* barrier for proper semantics */ | ||
| 56 | return _atomic_cmpxchg(v, o, n); | ||
| 57 | } | ||
| 58 | |||
| 59 | /** | 25 | /** |
| 60 | * atomic_add - add integer to atomic variable | 26 | * atomic_add - add integer to atomic variable |
| 61 | * @i: integer value to add | 27 | * @i: integer value to add |
| @@ -65,7 +31,7 @@ static inline int atomic_cmpxchg(atomic_t *v, int o, int n) | |||
| 65 | */ | 31 | */ |
| 66 | static inline void atomic_add(int i, atomic_t *v) | 32 | static inline void atomic_add(int i, atomic_t *v) |
| 67 | { | 33 | { |
| 68 | _atomic_xchg_add(v, i); | 34 | _atomic_xchg_add(&v->counter, i); |
| 69 | } | 35 | } |
| 70 | 36 | ||
| 71 | /** | 37 | /** |
| @@ -78,7 +44,7 @@ static inline void atomic_add(int i, atomic_t *v) | |||
| 78 | static inline int atomic_add_return(int i, atomic_t *v) | 44 | static inline int atomic_add_return(int i, atomic_t *v) |
| 79 | { | 45 | { |
| 80 | smp_mb(); /* barrier for proper semantics */ | 46 | smp_mb(); /* barrier for proper semantics */ |
| 81 | return _atomic_xchg_add(v, i) + i; | 47 | return _atomic_xchg_add(&v->counter, i) + i; |
| 82 | } | 48 | } |
| 83 | 49 | ||
| 84 | /** | 50 | /** |
| @@ -93,7 +59,7 @@ static inline int atomic_add_return(int i, atomic_t *v) | |||
| 93 | static inline int __atomic_add_unless(atomic_t *v, int a, int u) | 59 | static inline int __atomic_add_unless(atomic_t *v, int a, int u) |
| 94 | { | 60 | { |
| 95 | smp_mb(); /* barrier for proper semantics */ | 61 | smp_mb(); /* barrier for proper semantics */ |
| 96 | return _atomic_xchg_add_unless(v, a, u); | 62 | return _atomic_xchg_add_unless(&v->counter, a, u); |
| 97 | } | 63 | } |
| 98 | 64 | ||
| 99 | /** | 65 | /** |
| @@ -108,7 +74,7 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u) | |||
| 108 | */ | 74 | */ |
| 109 | static inline void atomic_set(atomic_t *v, int n) | 75 | static inline void atomic_set(atomic_t *v, int n) |
| 110 | { | 76 | { |
| 111 | _atomic_xchg(v, n); | 77 | _atomic_xchg(&v->counter, n); |
| 112 | } | 78 | } |
| 113 | 79 | ||
| 114 | /* A 64bit atomic type */ | 80 | /* A 64bit atomic type */ |
| @@ -119,11 +85,6 @@ typedef struct { | |||
| 119 | 85 | ||
| 120 | #define ATOMIC64_INIT(val) { (val) } | 86 | #define ATOMIC64_INIT(val) { (val) } |
| 121 | 87 | ||
| 122 | u64 _atomic64_xchg(atomic64_t *v, u64 n); | ||
| 123 | u64 _atomic64_xchg_add(atomic64_t *v, u64 i); | ||
| 124 | u64 _atomic64_xchg_add_unless(atomic64_t *v, u64 a, u64 u); | ||
| 125 | u64 _atomic64_cmpxchg(atomic64_t *v, u64 o, u64 n); | ||
| 126 | |||
| 127 | /** | 88 | /** |
| 128 | * atomic64_read - read atomic variable | 89 | * atomic64_read - read atomic variable |
| 129 | * @v: pointer of type atomic64_t | 90 | * @v: pointer of type atomic64_t |
| @@ -137,35 +98,7 @@ static inline u64 atomic64_read(const atomic64_t *v) | |||
| 137 | * Casting away const is safe since the atomic support routines | 98 | * Casting away const is safe since the atomic support routines |
| 138 | * do not write to memory if the value has not been modified. | 99 | * do not write to memory if the value has not been modified. |
| 139 | */ | 100 | */ |
| 140 | return _atomic64_xchg_add((atomic64_t *)v, 0); | 101 | return _atomic64_xchg_add((u64 *)&v->counter, 0); |
| 141 | } | ||
| 142 | |||
| 143 | /** | ||
| 144 | * atomic64_xchg - atomically exchange contents of memory with a new value | ||
| 145 | * @v: pointer of type atomic64_t | ||
| 146 | * @i: integer value to store in memory | ||
| 147 | * | ||
| 148 | * Atomically sets @v to @i and returns old @v | ||
