PERF_HPP__MAX_INDEX
BUG_ON(fmt->idx >= PERF_HPP__MAX_INDEX);
for (i = 0; i < PERF_HPP__MAX_INDEX; i++) {
(COLOR_MAXLEN + sizeof(PERF_COLOR_RESET)) * PERF_HPP__MAX_INDEX
BUG_ON(col >= PERF_HPP__MAX_INDEX);