check_excludes
if (check_excludes(cpuhw->event, cpuhw->flags, n0, 1))
if (check_excludes(cpuhw->event, cpuhw->flags, 0, n))
if (check_excludes(ctrs, cflags, n, 1))
if (check_excludes(cpuc->event, n0, 1))
if (check_excludes(evts, n, 1))
if (check_excludes(cpuc->event, 0, n))