arch/sparc/include/asm/rwsem-const.h

   1 /* rwsem-const.h: RW semaphore counter constants.  */
   2 #ifndef _SPARC64_RWSEM_CONST_H
   3 #define _SPARC64_RWSEM_CONST_H
   4
   5 #define RWSEM_UNLOCKED_VALUE            0x00000000
   6 #define RWSEM_ACTIVE_BIAS               0x00000001
   7 #define RWSEM_ACTIVE_MASK               0x0000ffff
   8 #define RWSEM_WAITING_BIAS              (-0x00010000)
   9 #define RWSEM_ACTIVE_READ_BIAS          RWSEM_ACTIVE_BIAS
  10 #define RWSEM_ACTIVE_WRITE_BIAS         (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS)
  11
  12 #endif /* _SPARC64_RWSEM_CONST_H */