for_each_hist_field
for_each_hist_field(i, hist_data) {
for_each_hist_field(i, hist_data) {
for_each_hist_field(i, hist_data) {
for_each_hist_field(i, hist_data) {
for_each_hist_field(i, hist_data) {
for_each_hist_field(i, hist_data) {