tdmr_reserved_area
tdmr_sz += sizeof(struct tdmr_reserved_area) * max_reserved_per_tdmr;
struct tdmr_reserved_area *rsvd_areas = tdmr->reserved_areas;
struct tdmr_reserved_area *r1 = (struct tdmr_reserved_area *)a;
struct tdmr_reserved_area *r2 = (struct tdmr_reserved_area *)b;
sort(tdmr->reserved_areas, rsvd_idx, sizeof(struct tdmr_reserved_area),
DECLARE_FLEX_ARRAY(struct tdmr_reserved_area, reserved_areas);