pixelstats: support thermal stats

Add support for thermal stats with dfs metrics

Bug: 228247740
Test: Build and boot on device
adb shell cmd stats print-stats | grep -i <atom-id>

Change-Id: Id466c43ee8503c1bdf99c3ad8218336874ebe595

6 files changed, 296 insertions, 1 deletions

diff --git a/pixelstats/Android.bp b/pixelstats/Android.bp
index f99e8e8..eadd8a9 100644
--- a/pixelstats/Android.bp
+++ b/pixelstats/Android.bp
@@ -72,6 +72,7 @@ cc_library {
     "PcaChargeStats.cpp",
     "StatsHelper.cpp",
     "SysfsCollector.cpp",
+    "ThermalStatsReporter.cpp",
     "UeventListener.cpp",
     "WirelessChargeStats.cpp",
     "WlcReporter.cpp",
diff --git a/pixelstats/SysfsCollector.cpp b/pixelstats/SysfsCollector.cpp
index 4a3711b..391c8b1 100644
--- a/pixelstats/SysfsCollector.cpp
+++ b/pixelstats/SysfsCollector.cpp
@@ -51,6 +51,7 @@ using android::hardware::google::pixel::PixelAtoms::F2fsSmartIdleMaintEnabledSta
 using android::hardware::google::pixel::PixelAtoms::F2fsStatsInfo;
 using android::hardware::google::pixel::PixelAtoms::StorageUfsHealth;
 using android::hardware::google::pixel::PixelAtoms::StorageUfsResetCount;
+using android::hardware::google::pixel::PixelAtoms::ThermalDfsStats;
 using android::hardware::google::pixel::PixelAtoms::VendorAudioHardwareStatsReported;
 using android::hardware::google::pixel::PixelAtoms::VendorChargeCycles;
 using android::hardware::google::pixel::PixelAtoms::VendorHardwareFailed;
@@ -86,7 +87,8 @@ SysfsCollector::SysfsCollector(const struct SysfsPaths &sysfs_paths)
       kSpeakerHeartbeatPath(sysfs_paths.SpeakerHeartBeatPath),
       kUFSErrStatsPath(sysfs_paths.UFSErrStatsPath),
       kBlockStatsLength(sysfs_paths.BlockStatsLength),
-      kAmsRatePath(sysfs_paths.AmsRatePath) {}
+      kAmsRatePath(sysfs_paths.AmsRatePath),
+      kThermalStatsPaths(sysfs_paths.ThermalStatsPaths) {}
 
 bool SysfsCollector::ReadFileToInt(const std::string &path, int *val) {
     return ReadFileToInt(path.c_str(), val);
@@ -371,6 +373,10 @@ void SysfsCollector::logSpeakerHealthStats(const std::shared_ptr<IStats> &stats_
     reportSpeakerHealthStat(stats_client, right_obj);
 }
 
+void SysfsCollector::logThermalStats(const std::shared_ptr<IStats> &stats_client) {
+    thermal_stats_reporter_.logThermalStats(stats_client, kThermalStatsPaths);
+}
+
 /**
  * Report the Speech DSP state.
  */
@@ -1039,6 +1045,7 @@ void SysfsCollector::logPerDay() {
     mm_metrics_reporter_.logCmaStatus(stats_client);
     mm_metrics_reporter_.logPixelMmMetricsPerDay(stats_client);
     logVendorAudioHardwareStats(stats_client);
+    logThermalStats(stats_client);
 }
 
 void SysfsCollector::aggregatePer5Min() {
diff --git a/pixelstats/ThermalStatsReporter.cpp b/pixelstats/ThermalStatsReporter.cpp
new file mode 100644
index 0000000..30fb30d
--- /dev/null
+++ b/pixelstats/ThermalStatsReporter.cpp
@@ -0,0 +1,190 @@
+/*
+ * 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.
+ */
+
+#define LOG_TAG "pixelstats: ThermalStats"
+
+#include <aidl/android/frameworks/stats/IStats.h>
+#include <android-base/file.h>
+#include <android-base/properties.h>
+#include <android-base/stringprintf.h>
+#include <android-base/strings.h>
+#include <android/binder_manager.h>
+#include <hardware/google/pixel/pixelstats/pixelatoms.pb.h>
+#include <pixelstats/ThermalStatsReporter.h>
+#include <utils/Log.h>
+
+#include <cinttypes>
+
+namespace android {
+namespace hardware {
+namespace google {
+namespace pixel {
+
+using aidl::android::frameworks::stats::IStats;
+using aidl::android::frameworks::stats::VendorAtom;
+using aidl::android::frameworks::stats::VendorAtomValue;
+using android::base::ReadFileToString;
+using android::hardware::google::pixel::PixelAtoms::ThermalDfsStats;
+
+ThermalStatsReporter::ThermalStatsReporter() {}
+
+bool ThermalStatsReporter::readDfsCount(const std::string &path, int64_t *val) {
+    std::string file_contents;
+
+    if (path.empty()) {
+        ALOGE("Empty path");
+        return false;
+    }
+
+    if (!ReadFileToString(path.c_str(), &file_contents)) {
+        ALOGE("Unable to read %s - %s", path.c_str(), strerror(errno));
+        return false;
+    } else {
+        int64_t trips[8];
+
+        if (sscanf(file_contents.c_str(),
+                   "%" SCNd64 " %" SCNd64 " %" SCNd64 " %" SCNd64 " %" SCNd64 " %" SCNd64
+                   " %" SCNd64 " %" SCNd64,
+                   &trips[0], &trips[1], &trips[2], &trips[3], &trips[4], &trips[5], &trips[6],
+                   &trips[7]) < 8) {
+            ALOGE("Unable to parse trip_counters %s from file %s", file_contents.c_str(),
+                  path.c_str());
+            return false;
+        }
+
+        /* Trip#6 corresponds to DFS count */
+        *val = trips[6];
+    }
+
+    return true;
+}
+
+bool ThermalStatsReporter::captureThermalDfsStats(
+        const std::vector<std::string> &thermal_stats_paths, struct ThermalDfsCounts *pcur_data) {
+    bool report_stats = false;
+    std::string path;
+
+    if (thermal_stats_paths.size() < kNumOfThermalDfsStats) {
+        ALOGE("Number of thermal stats paths (%lu) is less than expected (%d)",
+              thermal_stats_paths.size(), kNumOfThermalDfsStats);
+        return false;
+    }
+
+    path = thermal_stats_paths[ThermalDfsStats::kBigDfsCountFieldNumber - kVendorAtomOffset];
+    if (!readDfsCount(path, &(pcur_data->big_count))) {
+        pcur_data->big_count = prev_data.big_count;
+    } else {
+        report_stats |= (pcur_data->big_count > prev_data.big_count);
+    }
+
+    path = thermal_stats_paths[ThermalDfsStats::kMidDfsCountFieldNumber - kVendorAtomOffset];
+    if (!readDfsCount(path, &(pcur_data->mid_count))) {
+        pcur_data->mid_count = prev_data.mid_count;
+    } else {
+        report_stats |= (pcur_data->mid_count > prev_data.mid_count);
+    }
+
+    path = thermal_stats_paths[ThermalDfsStats::kLittleDfsCountFieldNumber - kVendorAtomOffset];
+    if (!readDfsCount(path, &(pcur_data->little_count))) {
+        pcur_data->little_count = prev_data.little_count;
+    } else {
+        report_stats |= (pcur_data->little_count > prev_data.little_count);
+    }
+
+    path = thermal_stats_paths[ThermalDfsStats::kGpuDfsCountFieldNumber - kVendorAtomOffset];
+    if (!readDfsCount(path, &(pcur_data->gpu_count))) {
+        pcur_data->gpu_count = prev_data.gpu_count;
+    } else {
+        report_stats |= (pcur_data->gpu_count > prev_data.gpu_count);
+    }
+
+    path = thermal_stats_paths[ThermalDfsStats::kTpuDfsCountFieldNumber - kVendorAtomOffset];
+    if (!readDfsCount(path, &(pcur_data->tpu_count))) {
+        pcur_data->tpu_count = prev_data.tpu_count;
+    } else {
+        report_stats |= (pcur_data->tpu_count > prev_data.tpu_count);
+    }
+
+    path = thermal_stats_paths[ThermalDfsStats::kAurDfsCountFieldNumber - kVendorAtomOffset];
+    if (!readDfsCount(path, &(pcur_data->aur_count))) {
+        pcur_data->aur_count = prev_data.aur_count;
+    } else {
+        report_stats |= (pcur_data->aur_count > prev_data.aur_count);
+    }
+
+    return report_stats;
+}
+
+void ThermalStatsReporter::logThermalDfsStats(const std::shared_ptr<IStats> &stats_client,
+                                              const std::vector<std::string> &thermal_stats_paths) {
+    struct ThermalDfsCounts cur_data = prev_data;
+
+    if (!captureThermalDfsStats(thermal_stats_paths, &cur_data)) {
+        prev_data = cur_data;
+        ALOGI("No update found for thermal stats");
+        return;
+    }
+
+    VendorAtomValue tmp;
+    int64_t max_dfs_count = static_cast<int64_t>(INT32_MAX);
+    int dfs_count;
+    std::vector<VendorAtomValue> values(kNumOfThermalDfsStats);
+
+    dfs_count = std::min<int64_t>(cur_data.big_count - prev_data.big_count, max_dfs_count);
+    tmp.set<VendorAtomValue::intValue>(dfs_count);
+    values[ThermalDfsStats::kBigDfsCountFieldNumber - kVendorAtomOffset] = tmp;
+
+    dfs_count = std::min<int64_t>(cur_data.mid_count - prev_data.mid_count, max_dfs_count);
+    tmp.set<VendorAtomValue::intValue>(dfs_count);
+    values[ThermalDfsStats::kMidDfsCountFieldNumber - kVendorAtomOffset] = tmp;
+
+    dfs_count = std::min<int64_t>(cur_data.little_count - prev_data.little_count, max_dfs_count);
+    tmp.set<VendorAtomValue::intValue>(dfs_count);
+    values[ThermalDfsStats::kLittleDfsCountFieldNumber - kVendorAtomOffset] = tmp;
+
+    dfs_count = std::min<int64_t>(cur_data.gpu_count - prev_data.gpu_count, max_dfs_count);
+    tmp.set<VendorAtomValue::intValue>(dfs_count);
+    values[ThermalDfsStats::kGpuDfsCountFieldNumber - kVendorAtomOffset] = tmp;
+
+    dfs_count = std::min<int64_t>(cur_data.tpu_count - prev_data.tpu_count, max_dfs_count);
+    tmp.set<VendorAtomValue::intValue>(dfs_count);
+    values[ThermalDfsStats::kTpuDfsCountFieldNumber - kVendorAtomOffset] = tmp;
+
+    dfs_count = std::min<int64_t>(cur_data.aur_count - prev_data.aur_count, max_dfs_count);
+    tmp.set<VendorAtomValue::intValue>(dfs_count);
+    values[ThermalDfsStats::kAurDfsCountFieldNumber - kVendorAtomOffset] = tmp;
+
+    prev_data = cur_data;
+
+    ALOGD("Report updated thermal metrics to stats service");
+    // Send vendor atom to IStats HAL
+    VendorAtom event = {.reverseDomainName = "",
+                        .atomId = PixelAtoms::Atom::kThermalDfsStats,
+                        .values = std::move(values)};
+    const ndk::ScopedAStatus ret = stats_client->reportVendorAtom(event);
+    if (!ret.isOk())
+        ALOGE("Unable to report thermal DFS stats to Stats service");
+}
+
+void ThermalStatsReporter::logThermalStats(const std::shared_ptr<IStats> &stats_client,
+                                           const std::vector<std::string> &thermal_stats_paths) {
+    logThermalDfsStats(stats_client, thermal_stats_paths);
+}
+
+}  // namespace pixel
+}  // namespace google
+}  // namespace hardware
+}  // namespace android
diff --git a/pixelstats/include/pixelstats/SysfsCollector.h b/pixelstats/include/pixelstats/SysfsCollector.h
index c8bfb43..75b1a09 100644
--- a/pixelstats/include/pixelstats/SysfsCollector.h
+++ b/pixelstats/include/pixelstats/SysfsCollector.h
@@ -24,6 +24,7 @@
 #include "BatteryHealthReporter.h"
 #include "MitigationStatsReporter.h"
 #include "MmMetricsReporter.h"
+#include "ThermalStatsReporter.h"
 
 namespace android {
 namespace hardware {
@@ -62,6 +63,7 @@ class SysfsCollector {
         const std::vector<std::string> UFSErrStatsPath;
         const int BlockStatsLength;
         const char *const AmsRatePath;
+        const std::vector<std::string> ThermalStatsPaths;
     };
 
     SysfsCollector(const struct SysfsPaths &paths);
@@ -93,6 +95,7 @@ class SysfsCollector {
     void logBatteryEEPROM(const std::shared_ptr<IStats> &stats_client);
     void logSpeakerHealthStats(const std::shared_ptr<IStats> &stats_client);
     void logF2fsSmartIdleMaintEnabled(const std::shared_ptr<IStats> &stats_client);
+    void logThermalStats(const std::shared_ptr<IStats> &stats_client);
 
     void reportSlowIoFromFile(const std::shared_ptr<IStats> &stats_client, const char *path,
                               const VendorSlowIo::IoOperation &operation_s);
@@ -126,10 +129,12 @@ class SysfsCollector {
     const std::vector<std::string> kUFSErrStatsPath;
     const int kBlockStatsLength;
     const char *const kAmsRatePath;
+    const std::vector<std::string> kThermalStatsPaths;
 
     BatteryEEPROMReporter battery_EEPROM_reporter_;
     MmMetricsReporter mm_metrics_reporter_;
     MitigationStatsReporter mitigation_stats_reporter_;
+    ThermalStatsReporter thermal_stats_reporter_;
     BatteryHealthReporter battery_health_reporter_;
 
     // Proto messages are 1-indexed and VendorAtom field numbers start at 2, so
diff --git a/pixelstats/include/pixelstats/ThermalStatsReporter.h b/pixelstats/include/pixelstats/ThermalStatsReporter.h
new file mode 100644
index 0000000..57f246e
--- /dev/null
+++ b/pixelstats/include/pixelstats/ThermalStatsReporter.h
@@ -0,0 +1,71 @@
+/*
+ * 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.
+ */
+
+#ifndef HARDWARE_GOOGLE_PIXEL_PIXELSTATS_THERMALSTATSREPORTER_H
+#define HARDWARE_GOOGLE_PIXEL_PIXELSTATS_THERMALSTATSREPORTER_H
+
+#include <aidl/android/frameworks/stats/IStats.h>
+#include <hardware/google/pixel/pixelstats/pixelatoms.pb.h>
+
+#include <string>
+
+namespace android {
+namespace hardware {
+namespace google {
+namespace pixel {
+
+using aidl::android::frameworks::stats::IStats;
+using aidl::android::frameworks::stats::VendorAtomValue;
+
+/**
+ * A class to upload Pixel Thermal Stats metrics
+ */
+class ThermalStatsReporter {
+  public:
+    ThermalStatsReporter();
+    void logThermalStats(const std::shared_ptr<IStats> &stats_client,
+                         const std::vector<std::string> &thermal_stats_paths);
+
+  private:
+    struct ThermalDfsCounts {
+        int64_t big_count;
+        int64_t mid_count;
+        int64_t little_count;
+        int64_t gpu_count;
+        int64_t tpu_count;
+        int64_t aur_count;
+    };
+
+    // Proto messages are 1-indexed and VendorAtom field numbers start at 2, so
+    // store everything in the values array at the index of the field number
+    // -2.
+    const int kVendorAtomOffset = 2;
+    const int kNumOfThermalDfsStats = 6;
+    struct ThermalDfsCounts prev_data;
+
+    void logThermalDfsStats(const std::shared_ptr<IStats> &stats_client,
+                            const std::vector<std::string> &thermal_stats_paths);
+    bool captureThermalDfsStats(const std::vector<std::string> &thermal_stats_paths,
+                                struct ThermalDfsCounts *cur_data);
+    bool readDfsCount(const std::string &path, int64_t *val);
+};
+
+}  // namespace pixel
+}  // namespace google
+}  // namespace hardware
+}  // namespace android
+
+#endif  // HARDWARE_GOOGLE_PIXEL_PIXELSTATS_THERMALSTATSREPORTER_H
diff --git a/pixelstats/pixelatoms.proto b/pixelstats/pixelatoms.proto
index 3d957bf..2300526 100644
--- a/pixelstats/pixelatoms.proto
+++ b/pixelstats/pixelatoms.proto
@@ -82,6 +82,8 @@ message Atom {
       F2fsSmartIdleMaintEnabledStateChanged f2fs_smart_idle_maint_enabled_state_changed = 105039;
       BlockStatsReported block_stats_reported = 105040;
       VendorAudioHardwareStatsReported vendor_audio_hardware_stats_reported = 105041;
+
+      ThermalDfsStats thermal_dfs_stats = 105042;
     }
     // AOSP atom ID range ends at 109999
 }
@@ -903,6 +905,25 @@ message PowerMitigationStats {
 }
 
 /**
+ * Log thermal statistics.
+ */
+message ThermalDfsStats {
+ optional string reverse_domain_name = 1;
+ // The last count of BIG cluster dfs triggers
+ optional int32 big_dfs_count = 2;
+ // The last count of MID cluster dfs triggers
+ optional int32 mid_dfs_count = 3;
+ // The last count of LITTLE cluster dfs triggers
+ optional int32 little_dfs_count = 4;
+ // The last count of GPU dfs triggers
+ optional int32 gpu_dfs_count = 5;
+ // The last count of TPU dfs triggers
+ optional int32 tpu_dfs_count = 6;
+ // The last count of DSP dfs triggers
+ optional int32 aur_dfs_count = 7;
+}
+
+/**
  * Log how many segments have been reclaimed in a specific GC mode.
  */
 message F2fsGcSegmentInfo {