This commit is a preperation for a subsequent UBIFS commit which needs atomic_long operations. Therefor "include/asm-generic/atomic-long.h" is imported from 1860e37 Linux 3.15 Signed-off-by: Anton Habegger <anton.habegger@gmail.com>master
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#ifndef _ASM_GENERIC_ATOMIC_LONG_H |
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#define _ASM_GENERIC_ATOMIC_LONG_H |
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/*
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* Copyright (C) 2005 Silicon Graphics, Inc. |
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* Christoph Lameter |
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* |
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* Allows to provide arch independent atomic definitions without the need to |
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* edit all arch specific atomic.h files. |
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*/ |
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#include <asm/types.h> |
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/*
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* Suppport for atomic_long_t |
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* |
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* Casts for parameters are avoided for existing atomic functions in order to |
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* avoid issues with cast-as-lval under gcc 4.x and other limitations that the |
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* macros of a platform may have. |
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*/ |
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#if BITS_PER_LONG == 64 |
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typedef atomic64_t atomic_long_t; |
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#define ATOMIC_LONG_INIT(i) ATOMIC64_INIT(i) |
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static inline long atomic_long_read(atomic_long_t *l) |
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{ |
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atomic64_t *v = (atomic64_t *)l; |
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return (long)atomic64_read(v); |
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} |
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static inline void atomic_long_set(atomic_long_t *l, long i) |
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{ |
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atomic64_t *v = (atomic64_t *)l; |
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atomic64_set(v, i); |
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} |
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static inline void atomic_long_inc(atomic_long_t *l) |
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{ |
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atomic64_t *v = (atomic64_t *)l; |
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atomic64_inc(v); |
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} |
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static inline void atomic_long_dec(atomic_long_t *l) |
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{ |
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atomic64_t *v = (atomic64_t *)l; |
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atomic64_dec(v); |
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} |
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static inline void atomic_long_add(long i, atomic_long_t *l) |
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{ |
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atomic64_t *v = (atomic64_t *)l; |
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atomic64_add(i, v); |
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} |
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static inline void atomic_long_sub(long i, atomic_long_t *l) |
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{ |
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atomic64_t *v = (atomic64_t *)l; |
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atomic64_sub(i, v); |
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} |
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static inline int atomic_long_sub_and_test(long i, atomic_long_t *l) |
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{ |
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atomic64_t *v = (atomic64_t *)l; |
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return atomic64_sub_and_test(i, v); |
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} |
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static inline int atomic_long_dec_and_test(atomic_long_t *l) |
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{ |
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atomic64_t *v = (atomic64_t *)l; |
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return atomic64_dec_and_test(v); |
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} |
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static inline int atomic_long_inc_and_test(atomic_long_t *l) |
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{ |
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atomic64_t *v = (atomic64_t *)l; |
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return atomic64_inc_and_test(v); |
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} |
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static inline int atomic_long_add_negative(long i, atomic_long_t *l) |
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{ |
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atomic64_t *v = (atomic64_t *)l; |
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return atomic64_add_negative(i, v); |
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} |
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static inline long atomic_long_add_return(long i, atomic_long_t *l) |
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{ |
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atomic64_t *v = (atomic64_t *)l; |
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return (long)atomic64_add_return(i, v); |
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} |
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static inline long atomic_long_sub_return(long i, atomic_long_t *l) |
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{ |
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atomic64_t *v = (atomic64_t *)l; |
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return (long)atomic64_sub_return(i, v); |
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} |
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static inline long atomic_long_inc_return(atomic_long_t *l) |
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{ |
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atomic64_t *v = (atomic64_t *)l; |
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return (long)atomic64_inc_return(v); |
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} |
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static inline long atomic_long_dec_return(atomic_long_t *l) |
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{ |
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atomic64_t *v = (atomic64_t *)l; |
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return (long)atomic64_dec_return(v); |
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} |
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static inline long atomic_long_add_unless(atomic_long_t *l, long a, long u) |
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{ |
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atomic64_t *v = (atomic64_t *)l; |
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return (long)atomic64_add_unless(v, a, u); |
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} |
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#define atomic_long_inc_not_zero(l) atomic64_inc_not_zero((atomic64_t *)(l)) |
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#define atomic_long_cmpxchg(l, old, new) \ |
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(atomic64_cmpxchg((atomic64_t *)(l), (old), (new))) |
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#define atomic_long_xchg(v, new) \ |
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(atomic64_xchg((atomic64_t *)(v), (new))) |
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#else /* BITS_PER_LONG == 64 */ |
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typedef atomic_t atomic_long_t; |
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#define ATOMIC_LONG_INIT(i) ATOMIC_INIT(i) |
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static inline long atomic_long_read(atomic_long_t *l) |
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{ |
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atomic_t *v = (atomic_t *)l; |
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return (long)atomic_read(v); |
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} |
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static inline void atomic_long_set(atomic_long_t *l, long i) |
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{ |
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atomic_t *v = (atomic_t *)l; |
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atomic_set(v, i); |
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} |
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static inline void atomic_long_inc(atomic_long_t *l) |
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{ |
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atomic_t *v = (atomic_t *)l; |
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atomic_inc(v); |
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} |
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static inline void atomic_long_dec(atomic_long_t *l) |
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{ |
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atomic_t *v = (atomic_t *)l; |
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atomic_dec(v); |
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} |
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static inline void atomic_long_add(long i, atomic_long_t *l) |
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{ |
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atomic_t *v = (atomic_t *)l; |
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atomic_add(i, v); |
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} |
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static inline void atomic_long_sub(long i, atomic_long_t *l) |
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{ |
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atomic_t *v = (atomic_t *)l; |
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atomic_sub(i, v); |
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} |
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#ifndef __UBOOT__ |
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static inline int atomic_long_sub_and_test(long i, atomic_long_t *l) |
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{ |
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atomic_t *v = (atomic_t *)l; |
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return atomic_sub_and_test(i, v); |
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} |
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static inline int atomic_long_dec_and_test(atomic_long_t *l) |
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{ |
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atomic_t *v = (atomic_t *)l; |
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return atomic_dec_and_test(v); |
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} |
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static inline int atomic_long_inc_and_test(atomic_long_t *l) |
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{ |
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atomic_t *v = (atomic_t *)l; |
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return atomic_inc_and_test(v); |
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} |
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static inline int atomic_long_add_negative(long i, atomic_long_t *l) |
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{ |
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atomic_t *v = (atomic_t *)l; |
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return atomic_add_negative(i, v); |
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} |
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static inline long atomic_long_add_return(long i, atomic_long_t *l) |
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{ |
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atomic_t *v = (atomic_t *)l; |
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return (long)atomic_add_return(i, v); |
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} |
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static inline long atomic_long_sub_return(long i, atomic_long_t *l) |
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{ |
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atomic_t *v = (atomic_t *)l; |
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return (long)atomic_sub_return(i, v); |
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} |
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static inline long atomic_long_inc_return(atomic_long_t *l) |
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{ |
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atomic_t *v = (atomic_t *)l; |
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return (long)atomic_inc_return(v); |
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} |
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static inline long atomic_long_dec_return(atomic_long_t *l) |
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{ |
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atomic_t *v = (atomic_t *)l; |
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return (long)atomic_dec_return(v); |
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} |
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static inline long atomic_long_add_unless(atomic_long_t *l, long a, long u) |
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{ |
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atomic_t *v = (atomic_t *)l; |
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return (long)atomic_add_unless(v, a, u); |
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} |
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#define atomic_long_inc_not_zero(l) atomic_inc_not_zero((atomic_t *)(l)) |
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#define atomic_long_cmpxchg(l, old, new) \ |
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(atomic_cmpxchg((atomic_t *)(l), (old), (new))) |
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#define atomic_long_xchg(v, new) \ |
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(atomic_xchg((atomic_t *)(v), (new))) |
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#endif /* __UBOOT__ */ |
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#endif /* BITS_PER_LONG == 64 */ |
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#endif /* _ASM_GENERIC_ATOMIC_LONG_H */ |
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