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hardware_samsung/aidl/thermal/utils/thermal_stats_helper.cpp

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/*
* Copyright (C) 2022 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.
*/
#include "thermal_stats_helper.h"
#include <android-base/logging.h>
#include <android/binder_manager.h>
#include <hardware/google/pixel/pixelstats/pixelatoms.pb.h>
#include <algorithm>
#include <numeric>
#include <string_view>
namespace aidl {
namespace android {
namespace hardware {
namespace thermal {
namespace implementation {
constexpr std::string_view kCustomThresholdSetSuffix("-TH-");
constexpr std::string_view kCompressedThresholdSuffix("-CMBN-TH");
using aidl::android::frameworks::stats::VendorAtom;
namespace PixelAtoms = ::android::hardware::google::pixel::PixelAtoms;
namespace {
static std::shared_ptr<IStats> stats_client = nullptr;
std::shared_ptr<IStats> getStatsService() {
static std::once_flag statsServiceFlag;
std::call_once(statsServiceFlag, []() {
const std::string instance = std::string() + IStats::descriptor + "/default";
bool isStatsDeclared = AServiceManager_isDeclared(instance.c_str());
if (!isStatsDeclared) {
LOG(ERROR) << "Stats service is not registered.";
return;
}
stats_client = IStats::fromBinder(
ndk::SpAIBinder(AServiceManager_waitForService(instance.c_str())));
});
return stats_client;
}
bool isRecordByDefaultThreshold(const std::variant<bool, std::unordered_set<std::string>>
&record_by_default_threshold_all_or_name_set_,
std::string_view name) {
if (std::holds_alternative<bool>(record_by_default_threshold_all_or_name_set_)) {
return std::get<bool>(record_by_default_threshold_all_or_name_set_);
}
return std::get<std::unordered_set<std::string>>(record_by_default_threshold_all_or_name_set_)
.count(name.data());
}
template <typename T>
int calculateThresholdBucket(const std::vector<T> &thresholds, T value) {
if (thresholds.empty()) {
LOG(VERBOSE) << "No threshold present, so bucket is " << value << " as int.";
return static_cast<int>(value);
}
auto threshold_idx = std::upper_bound(thresholds.begin(), thresholds.end(), value);
int bucket = (threshold_idx - thresholds.begin());
LOG(VERBOSE) << "For value: " << value << " bucket is: " << bucket;
return bucket;
}
} // namespace
bool ThermalStatsHelper::initializeStats(
const Json::Value &config,
const std::unordered_map<std::string, SensorInfo> &sensor_info_map_,
const std::unordered_map<std::string, CdevInfo> &cooling_device_info_map_) {
StatsConfig stats_config;
if (!ParseStatsConfig(config, sensor_info_map_, cooling_device_info_map_, &stats_config)) {
LOG(ERROR) << "Failed to parse stats config";
return false;
}
bool is_initialized_ =
initializeSensorTempStats(stats_config.sensor_stats_info, sensor_info_map_) &&
initializeSensorCdevRequestStats(stats_config.cooling_device_request_info,
sensor_info_map_, cooling_device_info_map_);
if (is_initialized_) {
last_total_stats_report_time = boot_clock::now();
LOG(INFO) << "Thermal Stats Initialized Successfully";
}
return is_initialized_;
}
bool ThermalStatsHelper::initializeSensorCdevRequestStats(
const StatsInfo<int> &request_stats_info,
const std::unordered_map<std::string, SensorInfo> &sensor_info_map_,
const std::unordered_map<std::string, CdevInfo> &cooling_device_info_map_) {
std::unique_lock<std::shared_mutex> _lock(sensor_cdev_request_stats_map_mutex_);
for (const auto &[sensor, sensor_info] : sensor_info_map_) {
for (const auto &binded_cdev_info_pair :
sensor_info.throttling_info->binded_cdev_info_map) {
const auto &cdev = binded_cdev_info_pair.first;
const auto &max_state =
cooling_device_info_map_.at(binded_cdev_info_pair.first).max_state;
// Record by all state
if (isRecordByDefaultThreshold(
request_stats_info.record_by_default_threshold_all_or_name_set_, cdev)) {
// if the number of states is greater / equal(as state starts from 0) than
// residency_buckets in atom combine the initial states
if (max_state >= kMaxStatsResidencyCount) {
// buckets = [max_state -kMaxStatsResidencyCount + 1, ...max_state]
// idx = [1, .. max_state - (max_state - kMaxStatsResidencyCount + 1) + 1]
// idx = [1, .. kMaxStatsResidencyCount]
const auto starting_state = max_state - kMaxStatsResidencyCount + 1;
std::vector<int> thresholds(kMaxStatsResidencyCount);
std::iota(thresholds.begin(), thresholds.end(), starting_state);
const auto logging_name = cdev + kCompressedThresholdSuffix.data();
ThresholdList<int> threshold_list(logging_name, thresholds);
sensor_cdev_request_stats_map_[sensor][cdev]
.stats_by_custom_threshold.emplace_back(threshold_list);
} else {
// buckets = [0, 1, 2, 3, ...max_state]
const auto default_threshold_time_in_state_size = max_state + 1;
sensor_cdev_request_stats_map_[sensor][cdev].stats_by_default_threshold =
StatsRecord(default_threshold_time_in_state_size);
}
LOG(INFO) << "Sensor Cdev user vote stats on basis of all state initialized for ["
<< sensor << "-" << cdev << "]";
}
// Record by custom threshold
if (request_stats_info.record_by_threshold.count(cdev)) {
for (const auto &threshold_list : request_stats_info.record_by_threshold.at(cdev)) {
// check last threshold value(which is >= number of buckets as numbers in
// threshold are strictly increasing from 0) is less than max_state
if (threshold_list.thresholds.back() >= max_state) {
LOG(ERROR) << "For sensor " << sensor << " bindedCdev: " << cdev
<< "Invalid bindedCdev stats threshold: "
<< threshold_list.thresholds.back() << " >= " << max_state;
sensor_cdev_request_stats_map_.clear();
return false;
}
sensor_cdev_request_stats_map_[sensor][cdev]
.stats_by_custom_threshold.emplace_back(threshold_list);
LOG(INFO)
<< "Sensor Cdev user vote stats on basis of threshold initialized for ["
<< sensor << "-" << cdev << "]";
}
}
}
}
return true;
}
bool ThermalStatsHelper::initializeSensorTempStats(
const StatsInfo<float> &sensor_stats_info,
const std::unordered_map<std::string, SensorInfo> &sensor_info_map_) {
std::unique_lock<std::shared_mutex> _lock(sensor_temp_stats_map_mutex_);
const int severity_time_in_state_size = kThrottlingSeverityCount;
for (const auto &[sensor, sensor_info] : sensor_info_map_) {
// Record by severity
if (sensor_info.is_watch &&
isRecordByDefaultThreshold(
sensor_stats_info.record_by_default_threshold_all_or_name_set_, sensor)) {
// number of buckets = number of severity
sensor_temp_stats_map_[sensor].stats_by_default_threshold =
StatsRecord(severity_time_in_state_size);
LOG(INFO) << "Sensor temp stats on basis of severity initialized for [" << sensor
<< "]";
}
// Record by custom threshold
if (sensor_stats_info.record_by_threshold.count(sensor)) {
for (const auto &threshold_list : sensor_stats_info.record_by_threshold.at(sensor)) {
sensor_temp_stats_map_[sensor].stats_by_custom_threshold.emplace_back(
threshold_list);
LOG(INFO) << "Sensor temp stats on basis of threshold initialized for [" << sensor
<< "]";
}
}
}
return true;
}
void ThermalStatsHelper::updateStatsRecord(StatsRecord *stats_record, int new_state) {
const auto now = boot_clock::now();
const auto cur_state_duration = std::chrono::duration_cast<std::chrono::milliseconds>(
now - stats_record->cur_state_start_time);
LOG(VERBOSE) << "Adding duration " << cur_state_duration.count()
<< " for cur_state: " << stats_record->cur_state << " with value: "
<< stats_record->time_in_state_ms[stats_record->cur_state].count();
// Update last record end time
stats_record->time_in_state_ms[stats_record->cur_state] += cur_state_duration;
stats_record->cur_state_start_time = now;
stats_record->cur_state = new_state;
}
void ThermalStatsHelper::updateSensorCdevRequestStats(std::string_view sensor,
std::string_view cdev, int new_value) {
std::unique_lock<std::shared_mutex> _lock(sensor_cdev_request_stats_map_mutex_);
if (!sensor_cdev_request_stats_map_.count(sensor.data()) ||
!sensor_cdev_request_stats_map_[sensor.data()].count(cdev.data())) {
return;
}
auto &request_stats = sensor_cdev_request_stats_map_[sensor.data()][cdev.data()];
for (auto &stats_by_threshold : request_stats.stats_by_custom_threshold) {
int value = calculateThresholdBucket(stats_by_threshold.thresholds, new_value);
if (value != stats_by_threshold.stats_record.cur_state) {
LOG(VERBOSE) << "Updating bindedCdev stats for sensor: " << sensor.data()
<< " , cooling_device: " << cdev.data() << " with new value: " << value;
updateStatsRecord(&stats_by_threshold.stats_record, value);
}
}
if (request_stats.stats_by_default_threshold.has_value()) {
auto &stats_record = request_stats.stats_by_default_threshold.value();
if (new_value != stats_record.cur_state) {
LOG(VERBOSE) << "Updating bindedCdev stats for sensor: " << sensor.data()
<< " , cooling_device: " << cdev.data()
<< " with new value: " << new_value;
updateStatsRecord(&stats_record, new_value);
}
}
}
void ThermalStatsHelper::updateSensorTempStatsByThreshold(std::string_view sensor,
float temperature) {
std::unique_lock<std::shared_mutex> _lock(sensor_temp_stats_map_mutex_);
if (!sensor_temp_stats_map_.count(sensor.data())) {
return;
}
auto &sensor_temp_stats = sensor_temp_stats_map_[sensor.data()];
for (auto &stats_by_threshold : sensor_temp_stats.stats_by_custom_threshold) {
int value = calculateThresholdBucket(stats_by_threshold.thresholds, temperature);
if (value != stats_by_threshold.stats_record.cur_state) {
LOG(VERBOSE) << "Updating sensor stats for sensor: " << sensor.data()
<< " with value: " << value;
updateStatsRecord(&stats_by_threshold.stats_record, value);
}
}
if (temperature > sensor_temp_stats.max_temp) {
sensor_temp_stats.max_temp = temperature;
sensor_temp_stats.max_temp_timestamp = system_clock::now();
}
if (temperature < sensor_temp_stats.min_temp) {
sensor_temp_stats.min_temp = temperature;
sensor_temp_stats.min_temp_timestamp = system_clock::now();
}
}
void ThermalStatsHelper::updateSensorTempStatsBySeverity(std::string_view sensor,
const ThrottlingSeverity &severity) {
std::unique_lock<std::shared_mutex> _lock(sensor_temp_stats_map_mutex_);
if (sensor_temp_stats_map_.count(sensor.data()) &&
sensor_temp_stats_map_[sensor.data()].stats_by_default_threshold.has_value()) {
auto &stats_record =
sensor_temp_stats_map_[sensor.data()].stats_by_default_threshold.value();
int value = static_cast<int>(severity);
if (value != stats_record.cur_state) {
LOG(VERBOSE) << "Updating sensor stats for sensor: " << sensor.data()
<< " with value: " << value;
updateStatsRecord(&stats_record, value);
}
}
}
int ThermalStatsHelper::reportStats() {
const auto curTime = boot_clock::now();
const auto since_last_total_stats_update_ms =
std::chrono::duration_cast<std::chrono::milliseconds>(curTime -
last_total_stats_report_time);
LOG(VERBOSE) << "Duration from last total stats update is: "
<< since_last_total_stats_update_ms.count();
if (since_last_total_stats_update_ms < kUpdateIntervalMs) {
LOG(VERBOSE) << "Time elapsed since last update less than " << kUpdateIntervalMs.count();
return 0;
}
const std::shared_ptr<IStats> stats_client = getStatsService();
if (!stats_client) {
LOG(ERROR) << "Unable to get AIDL Stats service";
return -1;
}
int count_failed_reporting =
reportAllSensorTempStats(stats_client) + reportAllSensorCdevRequestStats(stats_client);
last_total_stats_report_time = curTime;
return count_failed_reporting;
}
int ThermalStatsHelper::reportAllSensorTempStats(const std::shared_ptr<IStats> &stats_client) {
int count_failed_reporting = 0;
std::unique_lock<std::shared_mutex> _lock(sensor_temp_stats_map_mutex_);
for (auto &[sensor, temp_stats] : sensor_temp_stats_map_) {
for (size_t threshold_set_idx = 0;
threshold_set_idx < temp_stats.stats_by_custom_threshold.size(); threshold_set_idx++) {
auto &stats_by_threshold = temp_stats.stats_by_custom_threshold[threshold_set_idx];
std::string sensor_name = stats_by_threshold.logging_name.value_or(
sensor + kCustomThresholdSetSuffix.data() + std::to_string(threshold_set_idx));
if (!reportSensorTempStats(stats_client, sensor_name, temp_stats,
&stats_by_threshold.stats_record)) {
count_failed_reporting++;
}
}
if (temp_stats.stats_by_default_threshold.has_value()) {
if (!reportSensorTempStats(stats_client, sensor, temp_stats,
&temp_stats.stats_by_default_threshold.value())) {
count_failed_reporting++;
}
}
}
return count_failed_reporting;
}
bool ThermalStatsHelper::reportSensorTempStats(const std::shared_ptr<IStats> &stats_client,
std::string_view sensor,
const SensorTempStats &sensor_temp_stats,
StatsRecord *stats_record) {
LOG(VERBOSE) << "Reporting sensor stats for " << sensor;
// maintain a copy in case reporting fails
StatsRecord thermal_stats_before_reporting = *stats_record;
std::vector<VendorAtomValue> values(2);
values[0].set<VendorAtomValue::stringValue>(sensor);
std::vector<int64_t> time_in_state_ms = processStatsRecordForReporting(stats_record);
const auto since_last_update_ms = std::chrono::duration_cast<std::chrono::milliseconds>(
stats_record->cur_state_start_time - stats_record->last_stats_report_time);
values[1].set<VendorAtomValue::longValue>(since_last_update_ms.count());
VendorAtomValue tmp;
for (auto &time_in_state : time_in_state_ms) {
tmp.set<VendorAtomValue::longValue>(time_in_state);
values.push_back(tmp);
}
auto remaining_residency_buckets_count = kMaxStatsResidencyCount - time_in_state_ms.size();
if (remaining_residency_buckets_count > 0) {
tmp.set<VendorAtomValue::longValue>(0);
values.insert(values.end(), remaining_residency_buckets_count, tmp);
}
tmp.set<VendorAtomValue::floatValue>(sensor_temp_stats.max_temp);
values.push_back(tmp);
tmp.set<VendorAtomValue::longValue>(
system_clock::to_time_t(sensor_temp_stats.max_temp_timestamp));
values.push_back(tmp);
tmp.set<VendorAtomValue::floatValue>(sensor_temp_stats.min_temp);
values.push_back(tmp);
tmp.set<VendorAtomValue::longValue>(
system_clock::to_time_t(sensor_temp_stats.min_temp_timestamp));
values.push_back(tmp);
if (!reportAtom(stats_client, PixelAtoms::Atom::kVendorTempResidencyStats, std::move(values))) {
LOG(ERROR) << "Unable to report VendorTempResidencyStats to Stats service for "
"sensor: "
<< sensor;
*stats_record = restoreStatsRecordOnFailure(std::move(thermal_stats_before_reporting));
return false;
}
// Update last time of stats reporting
stats_record->last_stats_report_time = boot_clock::now();
return true;
}
int ThermalStatsHelper::reportAllSensorCdevRequestStats(
const std::shared_ptr<IStats> &stats_client) {
int count_failed_reporting = 0;
std::unique_lock<std::shared_mutex> _lock(sensor_cdev_request_stats_map_mutex_);
for (auto &[sensor, cdev_request_stats_map] : sensor_cdev_request_stats_map_) {
for (auto &[cdev, request_stats] : cdev_request_stats_map) {
for (size_t threshold_set_idx = 0;
threshold_set_idx < request_stats.stats_by_custom_threshold.size();
threshold_set_idx++) {
auto &stats_by_threshold =
request_stats.stats_by_custom_threshold[threshold_set_idx];
std::string cdev_name = stats_by_threshold.logging_name.value_or(
cdev + kCustomThresholdSetSuffix.data() +
std::to_string(threshold_set_idx));
if (!reportSensorCdevRequestStats(stats_client, sensor, cdev_name,
&stats_by_threshold.stats_record)) {
count_failed_reporting++;
}
}
if (request_stats.stats_by_default_threshold.has_value()) {
if (!reportSensorCdevRequestStats(
stats_client, sensor, cdev,
&request_stats.stats_by_default_threshold.value())) {
count_failed_reporting++;
}
}
}
}
return count_failed_reporting;
}
bool ThermalStatsHelper::reportSensorCdevRequestStats(const std::shared_ptr<IStats> &stats_client,
std::string_view sensor,
std::string_view cdev,
StatsRecord *stats_record) {
LOG(VERBOSE) << "Reporting bindedCdev stats for sensor: " << sensor
<< " cooling_device: " << cdev;
// maintain a copy in case reporting fails
StatsRecord thermal_stats_before_reporting = *stats_record;
std::vector<VendorAtomValue> values(3);
values[0].set<VendorAtomValue::stringValue>(sensor);
values[1].set<VendorAtomValue::stringValue>(cdev);
std::vector<int64_t> time_in_state_ms = processStatsRecordForReporting(stats_record);
const auto since_last_update_ms = std::chrono::duration_cast<std::chrono::milliseconds>(
stats_record->cur_state_start_time - stats_record->last_stats_report_time);
values[2].set<VendorAtomValue::longValue>(since_last_update_ms.count());
VendorAtomValue tmp;
for (auto &time_in_state : time_in_state_ms) {
tmp.set<VendorAtomValue::longValue>(time_in_state);
values.push_back(tmp);
}
if (!reportAtom(stats_client, PixelAtoms::Atom::kVendorSensorCoolingDeviceStats,
std::move(values))) {
LOG(ERROR) << "Unable to report VendorSensorCoolingDeviceStats to Stats "
"service for sensor: "
<< sensor << " cooling_device: " << cdev;
*stats_record = restoreStatsRecordOnFailure(std::move(thermal_stats_before_reporting));
return false;
}
// Update last time of stats reporting
stats_record->last_stats_report_time = boot_clock::now();
return true;
}
std::vector<int64_t> ThermalStatsHelper::processStatsRecordForReporting(StatsRecord *stats_record) {
// update the last unclosed entry and start new record with same state
updateStatsRecord(stats_record, stats_record->cur_state);
std::vector<std::chrono::milliseconds> &time_in_state_ms = stats_record->time_in_state_ms;
// convert std::chrono::milliseconds time_in_state to int64_t vector for reporting
std::vector<int64_t> stats_residency(time_in_state_ms.size());
std::transform(time_in_state_ms.begin(), time_in_state_ms.end(), stats_residency.begin(),
[](std::chrono::milliseconds time_ms) { return time_ms.count(); });
// clear previous stats
std::fill(time_in_state_ms.begin(), time_in_state_ms.end(), std::chrono::milliseconds::zero());
return stats_residency;
}
bool ThermalStatsHelper::reportAtom(const std::shared_ptr<IStats> &stats_client,
const int32_t &atom_id, std::vector<VendorAtomValue> &&values) {
LOG(VERBOSE) << "Reporting thermal stats for atom_id " << atom_id;
// Send vendor atom to IStats HAL
VendorAtom event = {.reverseDomainName = "", .atomId = atom_id, .values = std::move(values)};
const ndk::ScopedAStatus ret = stats_client->reportVendorAtom(event);
return ret.isOk();
}
StatsRecord ThermalStatsHelper::restoreStatsRecordOnFailure(
StatsRecord &&stats_record_before_failure) {
stats_record_before_failure.report_fail_count += 1;
// If consecutive count of failure is high, reset stat to avoid overflow
if (stats_record_before_failure.report_fail_count >= kMaxStatsReportingFailCount) {
return StatsRecord(stats_record_before_failure.time_in_state_ms.size(),
stats_record_before_failure.cur_state);
} else {
return stats_record_before_failure;
}
}
std::unordered_map<std::string, SensorTempStats> ThermalStatsHelper::GetSensorTempStatsSnapshot() {
auto sensor_temp_stats_snapshot = sensor_temp_stats_map_;
for (auto &sensor_temp_stats_pair : sensor_temp_stats_snapshot) {
for (auto &temp_stats : sensor_temp_stats_pair.second.stats_by_custom_threshold) {
// update the last unclosed entry and start new record with same state
updateStatsRecord(&temp_stats.stats_record, temp_stats.stats_record.cur_state);
}
if (sensor_temp_stats_pair.second.stats_by_default_threshold.has_value()) {
auto &stats_by_default_threshold =
sensor_temp_stats_pair.second.stats_by_default_threshold.value();
// update the last unclosed entry and start new record with same state
updateStatsRecord(&stats_by_default_threshold, stats_by_default_threshold.cur_state);
}
}
return sensor_temp_stats_snapshot;
}
std::unordered_map<std::string, std::unordered_map<std::string, ThermalStats<int>>>
ThermalStatsHelper::GetSensorCoolingDeviceRequestStatsSnapshot() {
auto sensor_cdev_request_stats_snapshot = sensor_cdev_request_stats_map_;
for (auto &sensor_cdev_request_stats_pair : sensor_cdev_request_stats_snapshot) {
for (auto &cdev_request_stats_pair : sensor_cdev_request_stats_pair.second) {
for (auto &request_stats : cdev_request_stats_pair.second.stats_by_custom_threshold) {
// update the last unclosed entry and start new record with same state
updateStatsRecord(&request_stats.stats_record,
request_stats.stats_record.cur_state);
}
if (cdev_request_stats_pair.second.stats_by_default_threshold.has_value()) {
auto &stats_by_default_threshold =
cdev_request_stats_pair.second.stats_by_default_threshold.value();
// update the last unclosed entry and start new record with same state
updateStatsRecord(&stats_by_default_threshold,
stats_by_default_threshold.cur_state);
}
}
}
return sensor_cdev_request_stats_snapshot;
}
} // namespace implementation
} // namespace thermal
} // namespace hardware
} // namespace android
} // namespace aidl