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-/*
- * Copyright (C) 2021 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include <inttypes.h>
-
-#include <array>
-#include <chrono>
-#include <deque>
-#include <random>
-#include <vector>
-
-#include "AdaptiveCpuConfig.h"
-#include "CpuFrequencyReader.h"
-#include "Device.h"
-#include "ThrottleDecision.h"
-#include "WorkDurationProcessor.h"
-
-namespace aidl {
-namespace google {
-namespace hardware {
-namespace power {
-namespace impl {
-namespace pixel {
-
-// Currently Adaptive CPU is targeted to only raven/oriole, so we can hardcode the CPU architecture.
-// If we extend to other architectures, this will have to vary per-device or be dynamically loaded.
-constexpr uint32_t NUM_CPU_CORES = 8;
-constexpr uint32_t NUM_CPU_POLICIES = 3;
-constexpr std::array<uint32_t, NUM_CPU_POLICIES> CPU_POLICY_INDICES{0, 4, 6};
-
-struct ModelInput {
- std::array<double, NUM_CPU_POLICIES> cpuPolicyAverageFrequencyHz;
- std::array<double, NUM_CPU_CORES> cpuCoreIdleTimesPercentage;
- WorkDurationFeatures workDurationFeatures;
- ThrottleDecision previousThrottleDecision;
- Device device;
-
- bool SetCpuFreqiencies(
- const std::vector<CpuPolicyAverageFrequency> &cpuPolicyAverageFrequencies);
-
- void LogToAtrace() const;
-
- bool operator==(const ModelInput &other) const {
- return cpuPolicyAverageFrequencyHz == other.cpuPolicyAverageFrequencyHz &&
- cpuCoreIdleTimesPercentage == other.cpuCoreIdleTimesPercentage &&
- workDurationFeatures == other.workDurationFeatures &&
- previousThrottleDecision == other.previousThrottleDecision;
- }
-};
-
-class Model {
- public:
- Model()
- : mShouldRandomThrottleDistribution(0, 1),
- mRandomThrottleDistribution(static_cast<uint32_t>(ThrottleDecision::FIRST),
- static_cast<uint32_t>(ThrottleDecision::LAST)) {}
- ThrottleDecision Run(const std::deque<ModelInput> &modelInputs,
- const AdaptiveCpuConfig &config);
-
- private:
- std::default_random_engine mGenerator;
- std::uniform_real_distribution<double> mShouldRandomThrottleDistribution;
- std::uniform_int_distribution<uint32_t> mRandomThrottleDistribution;
-
- ThrottleDecision RunDecisionTree(const std::deque<ModelInput> &modelInputs);
-};
-
-} // namespace pixel
-} // namespace impl
-} // namespace power
-} // namespace hardware
-} // namespace google
-} // namespace aidl