// Poison value for freed memory
#define POISON 66
// Memory with correct data
#define WINE 33
#define SLAB_SIZE 2

#define read_poison	(data_read[0] == POISON)

#define RCU_GP_CTR_BIT (1 << 7)
#define RCU_GP_CTR_NEST_MASK (RCU_GP_CTR_BIT - 1)

//disabled
//#define REMOTE_BARRIERS