Commit 5b6667c7 authored Jul 13, 2016 by Steve Muckle Committed by Rafael J. Wysocki Jul 21, 2016

cpufreq: acpi-cpufreq: use cached frequency mapping when possible



A call to cpufreq_driver_resolve_freq will cache the mapping from
the desired target frequency to the frequency table index. If there
is a mapping for the desired target frequency then use it instead of
looking up the mapping again.

Signed-off-by: Steve Muckle <smuckle@linaro.org>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

parent 5cbea469

drivers/cpufreq/acpi-cpufreq.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -473,6 +473,9 @@ unsigned int acpi_cpufreq_fast_switch(struct cpufreq_policy *policy,
		/*
		* Find the closest frequency above target_freq.
		*/
		if (policy->cached_target_freq == target_freq)
		index = policy->cached_resolved_idx;
		else
		index = cpufreq_table_find_index_dl(policy, target_freq);

		entry = &policy->freq_table[index];