19  * {disk|part|all}_stat_{add|sub|inc|dec}() modify the stat counters and should
27 #define part_stat_get_cpu(part, field, cpu)				\  argument
28 	(per_cpu_ptr((part)->dkstats, (cpu))->field)
30 #define part_stat_get(part, field)					\  argument
31 	part_stat_get_cpu(part, field, smp_processor_id())
33 #define part_stat_read(part, field)					\  argument
35 	typeof((part)->dkstats->field) res = 0;				\
38 		res += per_cpu_ptr((part)->dkstats, _cpu)->field;	\
42 static inline void part_stat_set_all(struct hd_struct *part, int value)  in part_stat_set_all()  argument
47 		memset(per_cpu_ptr(part->dkstats, i), value,  in part_stat_set_all()
51 #define part_stat_read_accum(part, field)				\  argument
52 	(part_stat_read(part, field[STAT_READ]) +			\
53 	 part_stat_read(part, field[STAT_WRITE]) +			\
54 	 part_stat_read(part, field[STAT_DISCARD]))
56 #define __part_stat_add(part, field, addnd)				\  argument
57 	__this_cpu_add((part)->dkstats->field, addnd)
59 #define part_stat_add(part, field, addnd)	do {			\  argument
60 	__part_stat_add((part), field, addnd);				\
61 	if ((part)->partno)						\
62 		__part_stat_add(&part_to_disk((part))->part0,		\