From: Tuukka Tikkanen <[email protected]> This patch prevents cpuidle menu governor from using repeating interval prediction result if the idle period predicted is longer than the one allowed by shortest running timer.
Signed-off-by: Tuukka Tikkanen <[email protected]> --- drivers/cpuidle/governors/menu.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c index bc580b6..c8ab1c5 100644 --- a/drivers/cpuidle/governors/menu.c +++ b/drivers/cpuidle/governors/menu.c @@ -238,10 +238,13 @@ again: * * The typical interval is obtained when standard deviation is small * or standard deviation is small compared to the average interval. + * + * Use this result only if there is no timer to wake us up sooner. */ if (((avg > stddev * 6) && (divisor * 4 >= INTERVALS * 3)) || stddev <= 20) { - data->predicted_us = avg; + if (data->expected_us > avg) + data->predicted_us = avg; return; } else if ((divisor * 4) > INTERVALS * 3) { -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
