#define ATTR_DECLARE( NAME ) \
static struct kobj_attribute NAME##Attr = { \
    .attr = { .name = __stringify(NAME), .mode = 0666 }, \
    .show   = NAME##Show, \
    .store  = NAME##Store, \
};


#define ATTR_DECLARE_RO( NAME ) \
static struct kobj_attribute NAME##Attr = { \
    .attr = { .name = __stringify(NAME), .mode = 0444 }, \
    .show   = NAME##Show, \
    .store  = NULL, \
};


#define ATTR_DECLARE_WO( NAME ) \
static struct kobj_attribute NAME##Attr = { \
    .attr = { .name = __stringify(NAME), .mode = 0222 }, \
    .show   = NULL, \
    .store  = NAME##Store, \
};


#define ATTR_SHOW( NAME )				NAME##Show
#define ATTR_STORE( NAME )				NAME##Store
#define ATTR_GROUP( NAME )				NAME##Group