text: #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)
  
  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;
  
  	atomic64_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);
  }
  
  static inline int atomic_long_sub_and_test(long i, atomic_long_t *l)
  {
  	atomic64_t *v = (atomic64_t *)l;
  
  	return atomic64_sub_and_test(i, v);
  }
  
  static inline int atomic_long_dec_and_test(atomic_long_t *l)
  {
  	atomic64_t *v = (atomic64_t *)l;
  
  	return atomic64_dec_and_test(v);
  }
  
  static inline int atomic_long_inc_and_test(atomic_long_t *l)
  {
  	atomic64_t *v = (atomic64_t *)l;
  
  	return atomic64_inc_and_test(v);
  }
  
  static inline int atomic_long_add_negative(long i, atomic_long_t *l)
  {
  	atomic64_t *v = (atomic64_t *)l;
  
  	return atomic64_add_negative(i, v);
  }
  
  static inline long atomic_long_add_return(long i, atomic_long_t *l)
  {
  	atomic64_t *v = (atomic64_t *)l;
  
  	return (long)atomic64_add_return(i, v);
  }
  
  static inline long atomic_long_sub_return(long i, atomic_long_t *l)
  {
  	atomic64_t *v = (atomic64_t *)l;
  
  	return (long)atomic64_sub_return(i, v);
  }
  
  static inline long atomic_long_inc_return(atomic_long_t *l)
  {
  	atomic64_t *v = (atomic64_t *)l;
  
  	return (long)atomic64_inc_return(v);
  }
  
  static inline long atomic_long_dec_return(atomic_long_t *l)
  {
  	atomic64_t *v = (atomic64_t *)l;
  
  	return (long)atomic64_dec_return(v);
  }
  
  static inline long atomic_long_add_unless(atomic_long_t *l, long a, long u)
  {
  	atomic64_t *v = (atomic64_t *)l;
  
  	return (long)atomic64_add_unless(v, a, u);
  }
  
  #define atomic_long_inc_not_zero(l) atomic64_inc_not_zero((atomic64_t *)(l))
  
  #define atomic_long_cmpxchg(l, old, new) \
  	(atomic64_cmpxchg((atomic64_t *)(l), (old), (new)))
  #define atomic_long_xchg(v, new) \
  	(atomic64_xchg((atomic64_t *)(v), (new)))
  
  #else  /*  BITS_PER_LONG == 64  */
  
  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);
  }
  
  static inline int atomic_long_sub_and_test(long i, atomic_long_t *l)
  {
  	atomic_t *v = (atomic_t *)l;
  
  	return atomic_sub_and_test(i, v);
  }
  
  static inline int atomic_long_dec_and_test(atomic_long_t *l)
  {
  	atomic_t *v = (atomic_t *)l;
  
  	return atomic_dec_and_test(v);
  }
  
  static inline int atomic_long_inc_and_test(atomic_long_t *l)
  {
  	atomic_t *v = (atomic_t *)l;
  
  	return atomic_inc_and_test(v);
  }
  
  static inline int atomic_long_add_negative(long i, atomic_long_t *l)
  {
  	atomic_t *v = (atomic_t *)l;
  
  	return atomic_add_negative(i, v);
  }
  
  static inline long atomic_long_add_return(long i, atomic_long_t *l)
  {
  	atomic_t *v = (atomic_t *)l;
  
  	return (long)atomic_add_return(i, v);
  }
  
  static inline long atomic_long_sub_return(long i, atomic_long_t *l)
  {
  	atomic_t *v = (atomic_t *)l;
  
  	return (long)atomic_sub_return(i, v);
  }
  
  static inline long atomic_long_inc_return(atomic_long_t *l)
  {
  	atomic_t *v = (atomic_t *)l;
  
  	return (long)atomic_inc_return(v);
  }
  
  static inline long atomic_long_dec_return(atomic_long_t *l)
  {
  	atomic_t *v = (atomic_t *)l;
  
  	return (long)atomic_dec_return(v);
  }
  
  static inline long atomic_long_add_unless(atomic_long_t *l, long a, long u)
  {
  	atomic_t *v = (atomic_t *)l;
  
  	return (long)atomic_add_unless(v, a, u);
  }
  
  #define atomic_long_inc_not_zero(l) atomic_inc_not_zero((atomic_t *)(l))
  
  #define atomic_long_cmpxchg(l, old, new) \
  	(atomic_cmpxchg((atomic_t *)(l), (old), (new)))
  #define atomic_long_xchg(v, new) \
  	(atomic_xchg((atomic_t *)(v), (new)))
  
  #endif  /*  BITS_PER_LONG == 64  */
  
  #endif  /*  _ASM_GENERIC_ATOMIC_LONG_H  */
  