#ifndef _UTILS_H
#define _UTILS_H

#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))

#ifndef offsetof
#define offsetof(type, member)  __builtin_offsetof (type, member)
#endif

#define container_of(ptr, type, member) \
	({								\
		const typeof( ((type *)0)->member ) *__mptr = (ptr);	\
		(type *)( (char *)__mptr - offsetof(type,member) );	\
	})

#endif