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#ifndef _ASM_GENERIC_ATOMIC_H
#define _ASM_GENERIC_ATOMIC_H
/*
* Copyright (C) 2005 Silicon Graphics, Inc.
* Christoph Lameter <clameter@sgi.com>
*
* 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)
static inline long atomic_long_read(atomic_long_t *l)
{
atomic64_t *v = (atomic64_t *)l;
return (long)atomic64_read(v);
}
static inline void atomic_long_set(atomic_long_t *l, long i)
{
atomic64_t *v = (atomic64_t *)l;
atomic_set(v, i);
}
static inline void atomic_long_inc(atomic_long_t *l)
{
atomic64_t *v = (atomic64_t *)l;
atomic64_inc(v);
}
static inline void atomic_long_dec(atomic_long_t *l)
{
atomic64_t *v = (atomic64_t *)l;
atomic64_dec(v);
}
static inline void atomic_long_add(long i, atomic_long_t *l)
{
atomic64_t *v = (atomic64_t *)l;
atomic64_add(i, v);
}
static inline void atomic_long_sub(long i, atomic_long_t *l)
{
atomic64_t *v = (atomic64_t *)l;
atomic64_sub(i, v);
}
#else
typedef atomic_t atomic_long_t;
#define ATOMIC_LONG_INIT(i) ATOMIC_INIT(i)
static inline long atomic_long_read(atomic_long_t *l)
{
atomic_t *v = (atomic_t *)l;
return (long)atomic_read(v);
}
static inline void atomic_long_set(atomic_long_t *l, long i)
{
atomic_t *v = (atomic_t *)l;
atomic_set(v, i);
}
static inline void atomic_long_inc(atomic_long_t *l)
{
atomic_t *v = (atomic_t *)l;
atomic_inc(v);
}
static inline void atomic_long_dec(atomic_long_t *l)
{
atomic_t *v = (atomic_t *)l;
atomic_dec(v);
}
static inline void atomic_long_add(long i, atomic_long_t *l)
{
atomic_t *v = (atomic_t *)l;
atomic_add(i, v);
}
static inline void atomic_long_sub(long i, atomic_long_t *l)
{
atomic_t *v = (atomic_t *)l;
atomic_sub(i, v);
}
#endif
#endif
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