#ifndef _ASM_GENERIC_ATOMIC_LONG_H #define _ASM_GENERIC_ATOMIC_LONG_H /* * Copyright (C) 2005 Silicon Graphics, Inc. * Christoph Lameter * * Allows to provide arch independent atomic definitions without the need to * edit all arch specific atomic.h files. */ #include <asm/types.h> /* * Suppport for atomic_long_t * * Casts for parameters are avoided for existing atomic functions in order to * avoid issues with cast-as-lval under gcc 4.x and other limitations that the * macros of a platform may have. */ #if BITS_PER_LONG == 64 typedef atomic64_t atomic_long_t; #define ATOMIC_LONG_INIT(i) ATOMIC64_INIT(i) #define ATOMIC_LONG_PFX(x) atomic64 ## x #else typedef atomic_t atomic_long_t; #define ATOMIC_LONG_INIT(i) ATOMIC_INIT(i) #define ATOMIC_LONG_PFX(x) atomic ## x #endif #define ATOMIC_LONG_READ_OP(mo) \ static inline long atomic_long_read##mo(const atomic_long_t *l) \ { \ ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; \ \ return (long)ATOMIC_LONG_PFX(_read##mo)(v); \ } ATOMIC_LONG_READ_OP() ATOMIC_LONG_READ_OP(_acquire) #undef ATOMIC_LONG_READ_OP #define ATOMIC_LONG_SET_OP(mo) \ static inline void atomic_long_set##mo(atomic_long_t *l, long i) \ { \ ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; \ \ ATOMIC_LONG_PFX(_set##mo)(v, i); \ } ATOMIC_LONG_SET_OP() ATOMIC_LONG_SET_OP(_release) #undef ATOMIC_LONG_SET_OP #define ATOMIC_LONG_ADD_SUB_OP(op, mo) \ static inline long \ atomic_long_##op##_return##mo(long i, atomic_long_t *l) \ { \ ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; \ \ return (long)ATOMIC_LONG_PFX(_##op##_return##mo)(i, v); \ } ATOMIC_LONG_ADD_SUB_OP(add,) ATOMIC_LONG_ADD_SUB_OP(add, _relaxed) ATOMIC_LONG_ADD_SUB_OP(add, _acquire) ATOMIC_LONG_ADD_SUB_OP(add, _release) ATOMIC_LONG_ADD_SUB_OP(sub,) ATOMIC_LONG_ADD_SUB_OP(sub, _relaxed) ATOMIC_LONG_ADD_SUB_OP(sub, _acquire) ATOMIC_LONG_ADD_SUB_OP(sub, _release) #undef ATOMIC_LONG_ADD_SUB_OP #define atomic_long_cmpxchg_relaxed(l, old, new) \ (ATOMIC_LONG_PFX(_cmpxchg_relaxed)((ATOMIC_LONG_PFX(_t) *)(l), \ (old), (new))) #define atomic_long_cmpxchg_acquire(l, old, new) \ (ATOMIC_LONG_PFX(_cmpxchg_acquire)((ATOMIC_LONG_PFX(_t) *)(l), \ (old), (new))) #define atomic_long_cmpxchg_release(l, old, new) \ (ATOMIC_LONG_PFX(_cmpxchg_release)((ATOMIC_LONG_PFX(_t) *)(l), \ (old), (new))) #define atomic_long_cmpxchg(l, old, new) \ (ATOMIC_LONG_PFX(_cmpxchg)((ATOMIC_LONG_PFX(_t) *)(l), (old), (new))) #define atomic_long_xchg_relaxed(v, new) \ (ATOMIC_LONG_PFX(_xchg_relaxed)((ATOMIC_LONG_PFX(_t) *)(v), (new))) #define atomic_long_xchg_acquire(v, new) \ (ATOMIC_LONG_PFX(_xchg_acquire)((ATOMIC_LONG_PFX(_t) *)(v), (new))) #define atomic_long_xchg_release(v, new) \ (ATOMIC_LONG_PFX(_xchg_release)((ATOMIC_LONG_PFX(_t) *)(v), (new))) #define atomic_long_xchg(v, new) \ (ATOMIC_LONG_PFX(_xchg)((ATOMIC_LONG_PFX(_t) *)(v), (new))) static __always_inline void atomic_long_inc(atomic_long_t *l) { ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; ATOMIC_LONG_PFX(_inc)(v); } static __always_inline void atomic_long_dec(atomic_long_t *l) { ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; ATOMIC_LONG_PFX(_dec)(v); } #define ATOMIC_LONG_OP(op) \ static __always_inline void \ atomic_long_##op(long i, atomic_long_t *l) \ { \ ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; \ \ ATOMIC_LONG_PFX(_##op)(i, v); \ } ATOMIC_LONG_OP(add) ATOMIC_LONG_OP(sub) ATOMIC_LONG_OP(and) ATOMIC_LONG_OP(or) ATOMIC_LONG_OP(xor) ATOMIC_LONG_OP(andnot) #undef ATOMIC_LONG_OP static inline int atomic_long_sub_and_test(long i, atomic_long_t *l) { ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; return ATOMIC_LONG_PFX(_sub_and_test)(i, v); } static inline int atomic_long_dec_and_test(atomic_long_t *l) { ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; return ATOMIC_LONG_PFX(_dec_and_test)(v); } static inline int atomic_long_inc_and_test(atomic_long_t *l) { ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; return ATOMIC_LONG_PFX(_inc_and_test)(v); } static inline int atomic_long_add_negative(long i, atomic_long_t *l) { ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; return ATOMIC_LONG_PFX(_add_negative)(i, v); } #define ATOMIC_LONG_INC_DEC_OP(op, mo) \ static inline long \ atomic_long_##op##_return##mo(atomic_long_t *l) \ { \ ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; \ \ return (long)ATOMIC_LONG_PFX(_##op##_return##mo)(v); \ } ATOMIC_LONG_INC_DEC_OP(inc,) ATOMIC_LONG_INC_DEC_OP(inc, _relaxed) ATOMIC_LONG_INC_DEC_OP(inc, _acquire) ATOMIC_LONG_INC_DEC_OP(inc, _release) ATOMIC_LONG_INC_DEC_OP(dec,) ATOMIC_LONG_INC_DEC_OP(dec, _relaxed) ATOMIC_LONG_INC_DEC_OP(dec, _acquire) ATOMIC_LONG_INC_DEC_OP(dec, _release) #undef ATOMIC_LONG_INC_DEC_OP static inline long atomic_long_add_unless(atomic_long_t *l, long a, long u) { ATOMIC_LONG_PFX(_t) *v = (ATOMIC_LONG_PFX(_t) *)l; return (long)ATOMIC_LONG_PFX(_add_unless)(v, a, u); } #define atomic_long_inc_not_zero(l) \ ATOMIC_LONG_PFX(_inc_not_zero)((ATOMIC_LONG_PFX(_t) *)(l)) #endif /* _ASM_GENERIC_ATOMIC_LONG_H */