Commit 27ed3cd2 authored Mar 05, 2013 by Stratos Karafotis Committed by Rafael J. Wysocki Apr 01, 2013

cpufreq: conservative: Fix the logic in frequency decrease checking



When we evaluate the CPU load for frequency decrease we have to compare
the load against down_threshold. There is no need to subtract 10 points
from down_threshold.

Instead, we have to use the default down_threshold or user's selection
unmodified.

Signed-off-by: Stratos Karafotis <stratosk@semaphore.gr>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

parent 7af1c056

drivers/cpufreq/cpufreq_conservative.c

+2 −6

Original line number	Diff line number	Diff line
		@@ -86,12 +86,8 @@ static void cs_check_cpu(int cpu, unsigned int load)
		return;
		dbs_info->down_skip = 0;

		/*
		* The optimal frequency is the frequency that is the lowest that can
		* support the current CPU usage without triggering the up policy. To be
		* safe, we focus 10 points under the threshold.
		*/
		if (load < (cs_tuners->down_threshold - 10)) {
		/* Check for frequency decrease */
		if (load < cs_tuners->down_threshold) {
		/*
		* if we cannot reduce the frequency anymore, break out early
		*/