extern void printmask(char *name, struct bitmask *mask);
extern int find_first(struct bitmask *mask);
extern struct bitmask *nodemask(char *s);
extern struct bitmask *cpumask(char *s, int *ncpus);
extern int read_sysctl(char *name);
extern void complain(const char *fmt, ...);
extern void nerror(const char *fmt, ...);

/* defined in main module, but called by util.c */
extern void usage(void);

extern long memsize(char *s);
extern int parse_policy(char *name, char *arg);
extern void print_policies(void);
extern char *policy_name(int policy);

#define err(x) perror("numactl: " x),exit(1)
#define array_len(x) (sizeof(x)/sizeof(*(x)))

#define round_up(x,y) (((x) + (y) - 1) & ~((y)-1))