diff options
Diffstat (limited to 'drivers/cpuidle')
| -rw-r--r-- | drivers/cpuidle/governors/menu.c | 28 |
1 files changed, 15 insertions, 13 deletions
diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c index 351697305fe..f1fadbecfa1 100644 --- a/drivers/cpuidle/governors/menu.c +++ b/drivers/cpuidle/governors/menu.c @@ -228,14 +228,6 @@ again: do_div(stddev, divisor); stddev = int_sqrt(stddev); /* - * If we have outliers to the upside in our distribution, discard - * those by setting the threshold to exclude these outliers, then - * calculate the average and standard deviation again. Once we get - * down to the bottom 3/4 of our samples, stop excluding samples. - * - * This can deal with workloads that have long pauses interspersed - * with sporadic activity with a bunch of short pauses. - * * The typical interval is obtained when standard deviation is small * or standard deviation is small compared to the average interval. * @@ -246,12 +238,22 @@ again: if (data->expected_us > avg) data->predicted_us = avg; return; - - } else if ((divisor * 4) > INTERVALS * 3) { - /* Exclude the max interval */ - thresh = max - 1; - goto again; } + + /* + * If we have outliers to the upside in our distribution, discard + * those by setting the threshold to exclude these outliers, then + * calculate the average and standard deviation again. Once we get + * down to the bottom 3/4 of our samples, stop excluding samples. + * + * This can deal with workloads that have long pauses interspersed + * with sporadic activity with a bunch of short pauses. + */ + if ((divisor * 4) <= INTERVALS * 3) + return; + + thresh = max - 1; + goto again; } /** |