Implement atomic logic ops -- atomic_{or,xor,and}. These will replace the atomic_{set,clear}_mask functions that are available on some archs. Acked-by: Heiko Carstens Signed-off-by: Peter Zijlstra (Intel) --- arch/s390/include/asm/atomic.h | 47 ++++++++++++++++++++++++++++------------- 1 file changed, 33 insertions(+), 14 deletions(-) --- a/arch/s390/include/asm/atomic.h +++ b/arch/s390/include/asm/atomic.h @@ -27,6 +27,7 @@ #define __ATOMIC_OR "lao" #define __ATOMIC_AND "lan" #define __ATOMIC_ADD "laa" +#define __ATOMIC_XOR "lax" #define __ATOMIC_BARRIER "bcr 14,0\n" #define __ATOMIC_LOOP(ptr, op_val, op_string, __barrier) \ @@ -49,6 +50,7 @@ #define __ATOMIC_OR "or" #define __ATOMIC_AND "nr" #define __ATOMIC_ADD "ar" +#define __ATOMIC_XOR "xr" #define __ATOMIC_BARRIER "\n" #define __ATOMIC_LOOP(ptr, op_val, op_string, __barrier) \ @@ -118,14 +120,26 @@ static inline void atomic_add(int i, ato #define atomic_dec_return(_v) atomic_sub_return(1, _v) #define atomic_dec_and_test(_v) (atomic_sub_return(1, _v) == 0) -static inline void atomic_clear_mask(unsigned int mask, atomic_t *v) +#define ATOMIC_OP(op, OP) \ +static inline void atomic_##op(int i, atomic_t *v) \ +{ \ + __ATOMIC_LOOP(v, i, __ATOMIC_##OP, __ATOMIC_NO_BARRIER); \ +} + +ATOMIC_OP(and, AND) +ATOMIC_OP(or, OR) +ATOMIC_OP(xor, XOR) + +#undef ATOMIC_OP + +static inline __deprecated void atomic_clear_mask(unsigned int mask, atomic_t *v) { - __ATOMIC_LOOP(v, ~mask, __ATOMIC_AND, __ATOMIC_NO_BARRIER); + atomic_and(~mask, v); } -static inline void atomic_set_mask(unsigned int mask, atomic_t *v) +static inline __deprecated void atomic_set_mask(unsigned int mask, atomic_t *v) { - __ATOMIC_LOOP(v, mask, __ATOMIC_OR, __ATOMIC_NO_BARRIER); + atomic_or(mask, v); } #define atomic_xchg(v, new) (xchg(&((v)->counter), new)) @@ -167,6 +181,7 @@ static inline int __atomic_add_unless(at #define __ATOMIC64_OR "laog" #define __ATOMIC64_AND "lang" #define __ATOMIC64_ADD "laag" +#define __ATOMIC64_XOR "laxg" #define __ATOMIC64_BARRIER "bcr 14,0\n" #define __ATOMIC64_LOOP(ptr, op_val, op_string, __barrier) \ @@ -189,6 +204,7 @@ static inline int __atomic_add_unless(at #define __ATOMIC64_OR "ogr" #define __ATOMIC64_AND "ngr" #define __ATOMIC64_ADD "agr" +#define __ATOMIC64_XOR "xgr" #define __ATOMIC64_BARRIER "\n" #define __ATOMIC64_LOOP(ptr, op_val, op_string, __barrier) \ @@ -247,16 +263,6 @@ static inline void atomic64_add(long lon __ATOMIC64_LOOP(v, i, __ATOMIC64_ADD, __ATOMIC64_NO_BARRIER); } -static inline void atomic64_clear_mask(unsigned long mask, atomic64_t *v) -{ - __ATOMIC64_LOOP(v, ~mask, __ATOMIC64_AND, __ATOMIC64_NO_BARRIER); -} - -static inline void atomic64_set_mask(unsigned long mask, atomic64_t *v) -{ - __ATOMIC64_LOOP(v, mask, __ATOMIC64_OR, __ATOMIC64_NO_BARRIER); -} - #define atomic64_xchg(v, new) (xchg(&((v)->counter), new)) static inline long long atomic64_cmpxchg(atomic64_t *v, @@ -270,6 +276,19 @@ static inline long long atomic64_cmpxchg return old; } +#define ATOMIC64_OP(op, OP) \ +static inline void atomic64_##op(long i, atomic64_t *v) \ +{ \ + __ATOMIC64_LOOP(v, i, __ATOMIC64_##OP, __ATOMIC64_NO_BARRIER); \ +} + +#define CONFIG_ARCH_HAS_ATOMIC_OR + +ATOMIC64_OP(and, AND) +ATOMIC64_OP(or, OR) +ATOMIC64_OP(xor, XOR) + +#undef ATOMIC64_OP #undef __ATOMIC64_LOOP static inline int atomic64_add_unless(atomic64_t *v, long long i, long long u) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/