part_stat_add 377 include/linux/genhd.h part_stat_add(cpu, gendiskp, field, -1) part_stat_add 379 include/linux/genhd.h part_stat_add(cpu, gendiskp, field, 1) part_stat_add 381 include/linux/genhd.h part_stat_add(cpu, gendiskp, field, -subnd)