forked from Minki/linux
cpufreq: Move governor symbols to cpufreq.h
Move definitions of symbols related to transition latency and sampling rate to include/linux/cpufreq.h so they can be used by (future) goverernors located outside of drivers/cpufreq/. No functional changes. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
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@ -24,20 +24,6 @@
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#include <linux/module.h>
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#include <linux/mutex.h>
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/*
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* The polling frequency depends on the capability of the processor. Default
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* polling frequency is 1000 times the transition latency of the processor. The
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* governor will work on any processor with transition latency <= 10ms, using
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* appropriate sampling rate.
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*
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* For CPUs with transition latency > 10ms (mostly drivers with CPUFREQ_ETERNAL)
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* this governor will not work. All times here are in us (micro seconds).
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*/
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#define MIN_SAMPLING_RATE_RATIO (2)
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#define LATENCY_MULTIPLIER (1000)
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#define MIN_LATENCY_MULTIPLIER (20)
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#define TRANSITION_LATENCY_LIMIT (10 * 1000 * 1000)
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/* Ondemand Sampling types */
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enum {OD_NORMAL_SAMPLE, OD_SUB_SAMPLE};
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@ -426,6 +426,20 @@ static inline unsigned long cpufreq_scale(unsigned long old, u_int div,
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#define CPUFREQ_POLICY_POWERSAVE (1)
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#define CPUFREQ_POLICY_PERFORMANCE (2)
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/*
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* The polling frequency depends on the capability of the processor. Default
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* polling frequency is 1000 times the transition latency of the processor. The
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* ondemand governor will work on any processor with transition latency <= 10ms,
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* using appropriate sampling rate.
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*
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* For CPUs with transition latency > 10ms (mostly drivers with CPUFREQ_ETERNAL)
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* the ondemand governor will not work. All times here are in us (microseconds).
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*/
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#define MIN_SAMPLING_RATE_RATIO (2)
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#define LATENCY_MULTIPLIER (1000)
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#define MIN_LATENCY_MULTIPLIER (20)
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#define TRANSITION_LATENCY_LIMIT (10 * 1000 * 1000)
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/* Governor Events */
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#define CPUFREQ_GOV_START 1
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#define CPUFREQ_GOV_STOP 2
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