include/atomic.h

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (c) 2011 RedHat, Inc.
   4  * All Rights Reserved.
   5  */
   6 #ifndef __ATOMIC_H__
   7 #define __ATOMIC_H__
   8
   9 /*
  10  * Warning: These are not really atomic at all. They are wrappers around the
  11  * kernel atomic variable interface. If we do need these variables to be atomic
  12  * (due to multithreading of the code that uses them) we need to add some
  13  * pthreads magic here.
  14  */
  15 typedef int32_t atomic_t;
  16 typedef int64_t atomic64_t;
  17
  18 #define atomic_inc_return(x)    (++(*(x)))
  19 #define atomic_dec_return(x)    (--(*(x)))
  20
  21 #define atomic64_read(x)        *(x)
  22 #define atomic64_set(x, v)      (*(x) = v)
  23
  24 #endif /* __ATOMIC_H__ */