DIV_2_THRESHOLD
if (req->rate < (DIV_2_THRESHOLD / 2))
if (req->rate < DIV_2_THRESHOLD)
if (cnd->new_rate < DIV_2_THRESHOLD &&
cnd->old_rate > DIV_2_THRESHOLD)
if (cnd->new_rate < DIV_2_THRESHOLD &&
cnd->old_rate > DIV_2_THRESHOLD)