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Commit 09657429 authored by qctecmdr's avatar qctecmdr Committed by Gerrit - the friendly Code Review server
Browse files

Merge "cpuidle: lpm-levels: Enable ipi prediction"

parents f03998e3 02d07ab8

drivers/cpuidle/lpm-levels.c

+3 −5
Original line number Diff line number Diff line
@@ -82,7 +82,7 @@ struct lpm_cluster *lpm_root_node; 
static bool lpm_prediction = true;

module_param_named(lpm_prediction, lpm_prediction, bool, 0664);



static bool lpm_ipi_prediction;

static bool lpm_ipi_prediction = true;

module_param_named(lpm_ipi_prediction, lpm_ipi_prediction, bool, 0664);



struct lpm_history {
@@ -469,9 +469,6 @@ static uint64_t find_deviation(int *interval, uint32_t ref_stddev, 
	uint64_t max, avg, stddev;

	int64_t thresh = LLONG_MAX;



	if (lpm_ipi_prediction)

		ref_stddev += DEFAULT_IPI_STDDEV;



	do {

		max = avg = divisor = stddev = 0;

		for (i = 0; i < MAXSAMPLES; i++) {
@@ -601,7 +598,8 @@ static uint64_t lpm_cpuidle_predict(struct cpuidle_device *dev, 
	if (*idx_restrict_time || !cpu->ipi_prediction || !lpm_ipi_prediction)

		return 0;



	avg = find_deviation(ipi_history->interval, cpu->ref_stddev,

	avg = find_deviation(ipi_history->interval, cpu->ref_stddev

						+ DEFAULT_IPI_STDDEV,

						&(history->stime));

	if (avg) {

		*ipi_predicted = 1;