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kernel add
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/*
* Copyright 2004-2011 Analog Devices Inc.
*
* Licensed under the GPL-2 or later.
*/
#ifndef __ARCH_BLACKFIN_ATOMIC__
#define __ARCH_BLACKFIN_ATOMIC__
#include <asm/cmpxchg.h>
#ifdef CONFIG_SMP
#include <asm/barrier.h>
#include <linux/linkage.h>
#include <linux/types.h>
asmlinkage int __raw_uncached_fetch_asm(const volatile int *ptr);
asmlinkage int __raw_atomic_add_asm(volatile int *ptr, int value);
asmlinkage int __raw_atomic_and_asm(volatile int *ptr, int value);
asmlinkage int __raw_atomic_or_asm(volatile int *ptr, int value);
asmlinkage int __raw_atomic_xor_asm(volatile int *ptr, int value);
asmlinkage int __raw_atomic_test_asm(const volatile int *ptr, int value);
#define atomic_read(v) __raw_uncached_fetch_asm(&(v)->counter)
#define atomic_add_return(i, v) __raw_atomic_add_asm(&(v)->counter, i)
#define atomic_sub_return(i, v) __raw_atomic_add_asm(&(v)->counter, -(i))
#define atomic_or(i, v) (void)__raw_atomic_or_asm(&(v)->counter, i)
#define atomic_and(i, v) (void)__raw_atomic_and_asm(&(v)->counter, i)
#define atomic_xor(i, v) (void)__raw_atomic_xor_asm(&(v)->counter, i)
#endif
#include <asm-generic/atomic.h>
#endif
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