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531 lines
22 KiB
531 lines
22 KiB
/*
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* Copyright (C) 2021 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "pixelstats: MmMetrics"
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#include <aidl/android/frameworks/stats/IStats.h>
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#include <android-base/file.h>
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#include <android-base/parseint.h>
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#include <android-base/properties.h>
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#include <android-base/stringprintf.h>
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#include <android-base/strings.h>
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#include <android/binder_manager.h>
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#include <hardware/google/pixel/pixelstats/pixelatoms.pb.h>
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#include <pixelstats/MmMetricsReporter.h>
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#include <utils/Log.h>
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#define SZ_4K 0x00001000
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#define SZ_2M 0x00200000
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namespace android {
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namespace hardware {
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namespace google {
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namespace pixel {
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using aidl::android::frameworks::stats::IStats;
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using aidl::android::frameworks::stats::VendorAtom;
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using aidl::android::frameworks::stats::VendorAtomValue;
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using android::base::ReadFileToString;
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using android::base::StartsWith;
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using android::hardware::google::pixel::PixelAtoms::CmaStatus;
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using android::hardware::google::pixel::PixelAtoms::CmaStatusExt;
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using android::hardware::google::pixel::PixelAtoms::PixelMmMetricsPerDay;
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using android::hardware::google::pixel::PixelAtoms::PixelMmMetricsPerHour;
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const std::vector<MmMetricsReporter::MmMetricsInfo> MmMetricsReporter::kMmMetricsPerHourInfo = {
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{"nr_free_pages", PixelMmMetricsPerHour::kFreePagesFieldNumber, false},
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{"nr_anon_pages", PixelMmMetricsPerHour::kAnonPagesFieldNumber, false},
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{"nr_file_pages", PixelMmMetricsPerHour::kFilePagesFieldNumber, false},
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{"nr_slab_reclaimable", PixelMmMetricsPerHour::kSlabReclaimableFieldNumber, false},
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{"nr_zspages", PixelMmMetricsPerHour::kZspagesFieldNumber, false},
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{"nr_unevictable", PixelMmMetricsPerHour::kUnevictableFieldNumber, false},
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};
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const std::vector<MmMetricsReporter::MmMetricsInfo> MmMetricsReporter::kMmMetricsPerDayInfo = {
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{"workingset_refault", PixelMmMetricsPerDay::kWorkingsetRefaultFieldNumber, true},
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{"workingset_refault_file", PixelMmMetricsPerDay::kWorkingsetRefaultFieldNumber, true},
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{"pswpin", PixelMmMetricsPerDay::kPswpinFieldNumber, true},
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{"pswpout", PixelMmMetricsPerDay::kPswpoutFieldNumber, true},
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{"allocstall_dma", PixelMmMetricsPerDay::kAllocstallDmaFieldNumber, true},
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{"allocstall_dma32", PixelMmMetricsPerDay::kAllocstallDma32FieldNumber, true},
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{"allocstall_normal", PixelMmMetricsPerDay::kAllocstallNormalFieldNumber, true},
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{"allocstall_movable", PixelMmMetricsPerDay::kAllocstallMovableFieldNumber, true},
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{"pgalloc_dma", PixelMmMetricsPerDay::kPgallocDmaFieldNumber, true},
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{"pgalloc_dma32", PixelMmMetricsPerDay::kPgallocDma32FieldNumber, true},
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{"pgalloc_normal", PixelMmMetricsPerDay::kPgallocNormalFieldNumber, true},
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{"pgalloc_movable", PixelMmMetricsPerDay::kPgallocMovableFieldNumber, true},
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{"pgsteal_kswapd", PixelMmMetricsPerDay::kPgstealKswapdFieldNumber, true},
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{"pgsteal_direct", PixelMmMetricsPerDay::kPgstealDirectFieldNumber, true},
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{"pgscan_kswapd", PixelMmMetricsPerDay::kPgscanKswapdFieldNumber, true},
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{"pgscan_direct", PixelMmMetricsPerDay::kPgscanDirectFieldNumber, true},
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{"oom_kill", PixelMmMetricsPerDay::kOomKillFieldNumber, true},
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{"pgalloc_costly_order", PixelMmMetricsPerDay::kPgallocHighFieldNumber, true},
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{"pgcache_hit", PixelMmMetricsPerDay::kPgcacheHitFieldNumber, true},
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{"pgcache_miss", PixelMmMetricsPerDay::kPgcacheMissFieldNumber, true},
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};
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const std::vector<MmMetricsReporter::MmMetricsInfo> MmMetricsReporter::kCmaStatusInfo = {
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{"alloc_pages_attempts", CmaStatus::kCmaAllocPagesAttemptsFieldNumber, true},
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{"alloc_pages_failfast_attempts", CmaStatus::kCmaAllocPagesSoftAttemptsFieldNumber, true},
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{"fail_pages", CmaStatus::kCmaFailPagesFieldNumber, true},
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{"fail_failfast_pages", CmaStatus::kCmaFailSoftPagesFieldNumber, true},
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{"migrated_pages", CmaStatus::kMigratedPagesFieldNumber, true},
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};
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const std::vector<MmMetricsReporter::MmMetricsInfo> MmMetricsReporter::kCmaStatusExtInfo = {
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{"latency_low", CmaStatusExt::kCmaAllocLatencyLowFieldNumber, false},
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{"latency_mid", CmaStatusExt::kCmaAllocLatencyMidFieldNumber, false},
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{"latency_high", CmaStatusExt::kCmaAllocLatencyHighFieldNumber, false},
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};
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const std::map<std::string, MmMetricsReporter::CmaType> MmMetricsReporter::kCmaTypeInfo = {
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{"farawimg", MmMetricsReporter::FARAWIMG}, {"faimg", MmMetricsReporter::FAIMG},
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{"faceauth_tpu", MmMetricsReporter::FATPU}, {"faprev", MmMetricsReporter::FAPREV},
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{"vframe", MmMetricsReporter::VFRAME}, {"vstream", MmMetricsReporter::VSTREAM},
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};
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MmMetricsReporter::MmMetricsReporter()
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: kVmstatPath("/proc/vmstat"),
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kIonTotalPoolsPath("/sys/kernel/dma_heap/total_pools_kb"),
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kIonTotalPoolsPathForLegacy("/sys/kernel/ion/total_pools_kb"),
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kGpuTotalPages("/sys/kernel/pixel_stat/gpu/mem/total_page_count"),
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kPixelStatMm("/sys/kernel/pixel_stat/mm") {}
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bool MmMetricsReporter::ReadFileToUint(const char *const path, uint64_t *val) {
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std::string file_contents;
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if (!ReadFileToString(path, &file_contents)) {
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ALOGI("Unable to read %s - %s", path, strerror(errno));
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return false;
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} else {
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file_contents = android::base::Trim(file_contents);
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if (!android::base::ParseUint(file_contents, val)) {
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ALOGI("Unable to convert %s to uint - %s", path, strerror(errno));
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return false;
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}
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}
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return true;
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}
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bool MmMetricsReporter::reportVendorAtom(const std::shared_ptr<IStats> &stats_client, int atom_id,
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const std::vector<VendorAtomValue> &values,
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const std::string &atom_name) {
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// Send vendor atom to IStats HAL
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VendorAtom event = {.reverseDomainName = PixelAtoms::ReverseDomainNames().pixel(),
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.atomId = atom_id,
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.values = std::move(values)};
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const ndk::ScopedAStatus ret = stats_client->reportVendorAtom(event);
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if (!ret.isOk()) {
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ALOGE("Unable to report %s to Stats service", atom_name.c_str());
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return false;
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}
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return true;
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}
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/**
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* Parse the output of /proc/vmstat or the sysfs having the same output format.
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* The map containing pairs of {field_string, data} will be returned.
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*/
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std::map<std::string, uint64_t> MmMetricsReporter::readVmStat(const char *path) {
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std::string file_contents;
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std::map<std::string, uint64_t> vmstat_data;
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if (path == nullptr) {
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ALOGI("vmstat path is not specified");
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return vmstat_data;
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}
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if (!ReadFileToString(path, &file_contents)) {
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ALOGE("Unable to read vmstat from %s, err: %s", path, strerror(errno));
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return vmstat_data;
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}
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std::istringstream data(file_contents);
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std::string line;
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while (std::getline(data, line)) {
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std::vector<std::string> words = android::base::Split(line, " ");
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if (words.size() != 2)
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continue;
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uint64_t i;
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if (!android::base::ParseUint(words[1], &i))
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continue;
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vmstat_data[words[0]] = i;
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}
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return vmstat_data;
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}
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uint64_t MmMetricsReporter::getIonTotalPools() {
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uint64_t res;
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if (!ReadFileToUint(kIonTotalPoolsPathForLegacy, &res) || (res == 0)) {
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if (!ReadFileToUint(kIonTotalPoolsPath, &res)) {
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return 0;
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}
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}
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return res;
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}
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/**
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* Collect GPU memory from kGpuTotalPages and return the total number of 4K page.
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*/
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uint64_t MmMetricsReporter::getGpuMemory() {
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uint64_t gpu_size = 0;
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if (!ReadFileToUint(kGpuTotalPages, &gpu_size)) {
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return 0;
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}
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return gpu_size;
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}
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/**
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* fillAtomValues() is used to copy Mm metrics to values
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* metrics_info: This is a vector of MmMetricsInfo {field_string, atom_key, update_diff}
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* field_string is used to get the data from mm_metrics.
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* atom_key is the position where the data should be put into values.
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* update_diff will be true if this is an accumulated data.
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* metrics_info may have multiple entries with the same atom_key,
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* e.g. workingset_refault and workingset_refault_file.
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* mm_metrics: This map contains pairs of {field_string, cur_value} collected
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* from /proc/vmstat or the sysfs for the pixel specific metrics.
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* e.g. {"nr_free_pages", 200000}
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* Some data in mm_metrics are accumulated, e.g. pswpin.
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* We upload the difference instead of the accumulated value
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* when update_diff of the field is true.
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* prev_mm_metrics: The pointer to the metrics we collected last time.
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* atom_values: The atom values that will be reported later.
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*/
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void MmMetricsReporter::fillAtomValues(const std::vector<MmMetricsInfo> &metrics_info,
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const std::map<std::string, uint64_t> &mm_metrics,
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std::map<std::string, uint64_t> *prev_mm_metrics,
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std::vector<VendorAtomValue> *atom_values) {
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VendorAtomValue tmp;
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tmp.set<VendorAtomValue::longValue>(0);
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// resize atom_values to add all fields defined in metrics_info
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int max_idx = 0;
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for (auto &entry : metrics_info) {
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if (max_idx < entry.atom_key)
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max_idx = entry.atom_key;
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}
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int size = max_idx - kVendorAtomOffset + 1;
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if (atom_values->size() < size)
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atom_values->resize(size, tmp);
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for (auto &entry : metrics_info) {
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int atom_idx = entry.atom_key - kVendorAtomOffset;
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auto data = mm_metrics.find(entry.name);
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if (data == mm_metrics.end())
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continue;
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uint64_t cur_value = data->second;
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uint64_t prev_value = 0;
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if (prev_mm_metrics->size() != 0) {
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auto prev_data = prev_mm_metrics->find(entry.name);
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if (prev_data != prev_mm_metrics->end())
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prev_value = prev_data->second;
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}
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if (entry.update_diff) {
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tmp.set<VendorAtomValue::longValue>(cur_value - prev_value);
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} else {
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tmp.set<VendorAtomValue::longValue>(cur_value);
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}
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(*atom_values)[atom_idx] = tmp;
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}
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(*prev_mm_metrics) = mm_metrics;
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}
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void MmMetricsReporter::logPixelMmMetricsPerHour(const std::shared_ptr<IStats> &stats_client) {
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// Currently, we collect these metrics and report this atom only for userdebug_or_eng
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// We only grant permissions to access sysfs for userdebug_or_eng.
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// Add a check to avoid unnecessary access.
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if (android::base::GetProperty("ro.build.type", "") == "user")
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return;
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std::map<std::string, uint64_t> vmstat = readVmStat(kVmstatPath);
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if (vmstat.size() == 0)
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return;
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uint64_t ion_total_pools = getIonTotalPools();
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uint64_t gpu_memory = getGpuMemory();
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std::vector<VendorAtomValue> values;
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bool is_first_atom = (prev_hour_vmstat_.size() == 0) ? true : false;
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fillAtomValues(kMmMetricsPerHourInfo, vmstat, &prev_hour_vmstat_, &values);
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// resize values to add the following fields
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VendorAtomValue tmp;
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tmp.set<VendorAtomValue::longValue>(0);
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int size = PixelMmMetricsPerHour::kGpuMemoryFieldNumber - kVendorAtomOffset + 1;
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if (values.size() < size) {
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values.resize(size, tmp);
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}
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tmp.set<VendorAtomValue::longValue>(ion_total_pools);
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values[PixelMmMetricsPerHour::kIonTotalPoolsFieldNumber - kVendorAtomOffset] = tmp;
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tmp.set<VendorAtomValue::longValue>(gpu_memory);
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values[PixelMmMetricsPerHour::kGpuMemoryFieldNumber - kVendorAtomOffset] = tmp;
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// Don't report the first atom to avoid big spike in accumulated values.
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if (!is_first_atom) {
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// Send vendor atom to IStats HAL
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reportVendorAtom(stats_client, PixelAtoms::Atom::kPixelMmMetricsPerHour, values,
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"PixelMmMetricsPerHour");
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}
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}
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void MmMetricsReporter::logPixelMmMetricsPerDay(const std::shared_ptr<IStats> &stats_client) {
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// Currently, we collect these metrics and report this atom only for userdebug_or_eng
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// We only grant permissions to access sysfs for userdebug_or_eng.
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// Add a check to avoid unnecessary access.
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if (android::base::GetProperty("ro.build.type", "") == "user")
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return;
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std::map<std::string, uint64_t> vmstat = readVmStat(kVmstatPath);
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if (vmstat.size() == 0)
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return;
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std::vector<VendorAtomValue> values;
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bool is_first_atom = (prev_day_vmstat_.size() == 0) ? true : false;
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fillAtomValues(kMmMetricsPerDayInfo, vmstat, &prev_day_vmstat_, &values);
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std::map<std::string, uint64_t> pixel_vmstat =
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readVmStat(android::base::StringPrintf("%s/vmstat", kPixelStatMm).c_str());
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fillAtomValues(kMmMetricsPerDayInfo, pixel_vmstat, &prev_day_pixel_vmstat_, &values);
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fillProcessStime(PixelMmMetricsPerDay::kKswapdStimeClksFieldNumber, "kswapd0", &kswapd_pid_,
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&prev_kswapd_stime_, &values);
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fillProcessStime(PixelMmMetricsPerDay::kKcompactdStimeClksFieldNumber, "kcompactd0",
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&kcompactd_pid_, &prev_kcompactd_stime_, &values);
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// Don't report the first atom to avoid big spike in accumulated values.
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if (!is_first_atom) {
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// Send vendor atom to IStats HAL
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reportVendorAtom(stats_client, PixelAtoms::Atom::kPixelMmMetricsPerDay, values,
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"PixelMmMetricsPerDay");
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}
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}
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/**
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* Check if /proc/<pid>/comm is equal to name.
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*/
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bool MmMetricsReporter::isValidPid(int pid, const char *name) {
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if (pid <= 0)
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return false;
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std::string file_contents;
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std::string path = android::base::StringPrintf("/proc/%d/comm", pid);
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if (!ReadFileToString(path, &file_contents)) {
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ALOGI("Unable to read %s, err: %s", path.c_str(), strerror(errno));
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return false;
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}
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file_contents = android::base::Trim(file_contents);
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return !file_contents.compare(name);
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}
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/**
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* Return pid if /proc/<pid>/comm is equal to name, or -1 if not found.
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*/
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int MmMetricsReporter::findPidByProcessName(const char *name) {
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std::unique_ptr<DIR, int (*)(DIR *)> dir(opendir("/proc"), closedir);
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if (!dir)
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return -1;
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int pid;
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while (struct dirent *dp = readdir(dir.get())) {
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if (dp->d_type != DT_DIR)
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continue;
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if (!android::base::ParseInt(dp->d_name, &pid))
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continue;
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// Avoid avc denial since pixelstats-vendor doesn't have the permission to access /proc/1
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if (pid == 1)
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continue;
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std::string file_contents;
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std::string path = android::base::StringPrintf("/proc/%s/comm", dp->d_name);
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if (!ReadFileToString(path, &file_contents))
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continue;
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file_contents = android::base::Trim(file_contents);
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if (file_contents.compare(name))
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continue;
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return pid;
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}
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return -1;
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}
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/**
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* Get stime of a process from /proc/<pid>/stat
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* stime is the 15th field.
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*/
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uint64_t MmMetricsReporter::getStimeByPid(int pid) {
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const int stime_idx = 15;
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uint64_t stime;
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std::string file_contents;
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std::string path = android::base::StringPrintf("/proc/%d/stat", pid);
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if (!ReadFileToString(path, &file_contents)) {
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ALOGI("Unable to read %s, err: %s", path.c_str(), strerror(errno));
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return false;
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}
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std::vector<std::string> data = android::base::Split(file_contents, " ");
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if (data.size() < stime_idx) {
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ALOGI("Unable to find stime from %s. size: %lu", path.c_str(), data.size());
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return false;
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}
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if (android::base::ParseUint(data[stime_idx - 1], &stime))
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return stime;
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else
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return 0;
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}
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/**
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* Find stime of the process and copy it into atom_values
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* atom_key: Currently, it can only be kKswapdTimeFieldNumber or kKcompactdTimeFieldNumber
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* name: process name
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* pid: The pid of the process. It would be the pid we found last time,
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* or -1 if not found.
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* prev_stime: The stime of the process collected last time.
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* atom_values: The atom we will report later.
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*/
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void MmMetricsReporter::fillProcessStime(int atom_key, const char *name, int *pid,
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uint64_t *prev_stime,
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std::vector<VendorAtomValue> *atom_values) {
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// resize atom_values if there is no space for this stime field.
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int atom_idx = atom_key - kVendorAtomOffset;
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int size = atom_idx + 1;
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VendorAtomValue tmp;
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tmp.set<VendorAtomValue::longValue>(0);
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if (atom_values->size() < size)
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atom_values->resize(size, tmp);
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if (!isValidPid(*pid, name)) {
|
|
(*pid) = findPidByProcessName(name);
|
|
if ((*pid) <= 0) {
|
|
ALOGI("Unable to find pid of %s, err: %s", name, strerror(errno));
|
|
return;
|
|
}
|
|
}
|
|
|
|
uint64_t stime = getStimeByPid(*pid);
|
|
tmp.set<VendorAtomValue::longValue>(stime - *prev_stime);
|
|
(*atom_values)[atom_idx] = tmp;
|
|
(*prev_stime) = stime;
|
|
}
|
|
|
|
/**
|
|
* Collect CMA metrics from kPixelStatMm/cma/<cma_type>/<metric>
|
|
* cma_type: CMA heap name
|
|
* metrics_info: This is a vector of MmMetricsInfo {metric, atom_key, update_diff}.
|
|
* Currently, we only collect CMA metrics defined in metrics_info
|
|
*/
|
|
std::map<std::string, uint64_t> MmMetricsReporter::readCmaStat(
|
|
const std::string &cma_type,
|
|
const std::vector<MmMetricsReporter::MmMetricsInfo> &metrics_info) {
|
|
uint64_t file_contents;
|
|
std::map<std::string, uint64_t> cma_stat;
|
|
for (auto &entry : metrics_info) {
|
|
std::string path = android::base::StringPrintf("%s/cma/%s/%s", kPixelStatMm,
|
|
cma_type.c_str(), entry.name.c_str());
|
|
if (!ReadFileToUint(path.c_str(), &file_contents))
|
|
continue;
|
|
cma_stat[entry.name] = file_contents;
|
|
}
|
|
return cma_stat;
|
|
}
|
|
|
|
/**
|
|
* This function is to collect CMA metrics and upload them.
|
|
* The CMA metrics are collected by readCmaStat(), copied into atom values
|
|
* by fillAtomValues(), and then uploaded by reportVendorAtom(). The collected
|
|
* metrics will be stored in prev_cma_stat_ and prev_cma_stat_ext_ according
|
|
* to its CmaType.
|
|
*
|
|
* stats_client: The Stats service
|
|
* atom_id: The id of atom. It can be PixelAtoms::Atom::kCmaStatus or kCmaStatusExt
|
|
* cma_type: The name of CMA heap. We only collect metrics from CMA heaps defined
|
|
* in kCmaTypeInfo.
|
|
* type_idx: The id of the CMA heap. We add this id in atom values to identify
|
|
* the CMA status data.
|
|
* metrics_info: This is a vector of MmMetricsInfo {metric, atom_key, update_diff}.
|
|
* We only collect metrics defined in metrics_info from CMA heap path.
|
|
* all_prev_cma_stat: This is the CMA status collected last time.
|
|
* It is a map containing pairs of {type_idx, cma_stat}, and cma_stat is
|
|
* a map contains pairs of {metric, cur_value}.
|
|
* e.g. {CmaType::FARAWIMG, {"alloc_pages_attempts", 100000}, {...}, ....}
|
|
* is collected from kPixelStatMm/cma/farawimg/alloc_pages_attempts
|
|
*/
|
|
void MmMetricsReporter::reportCmaStatusAtom(
|
|
const std::shared_ptr<IStats> &stats_client, int atom_id, const std::string &cma_type,
|
|
CmaType type_idx, const std::vector<MmMetricsInfo> &metrics_info,
|
|
std::map<CmaType, std::map<std::string, uint64_t>> *all_prev_cma_stat) {
|
|
std::map<std::string, uint64_t> cma_stat = readCmaStat(cma_type, metrics_info);
|
|
if (!cma_stat.empty()) {
|
|
std::vector<VendorAtomValue> values;
|
|
VendorAtomValue tmp;
|
|
tmp.set<VendorAtomValue::intValue>(type_idx);
|
|
values.push_back(tmp);
|
|
|
|
std::map<std::string, uint64_t> prev_cma_stat;
|
|
auto entry = all_prev_cma_stat->find(type_idx);
|
|
if (entry != all_prev_cma_stat->end())
|
|
prev_cma_stat = entry->second;
|
|
|
|
bool is_first_atom = (prev_cma_stat.size() == 0) ? true : false;
|
|
fillAtomValues(metrics_info, cma_stat, &prev_cma_stat, &values);
|
|
(*all_prev_cma_stat)[type_idx] = prev_cma_stat;
|
|
if (!is_first_atom)
|
|
reportVendorAtom(stats_client, atom_id, values, "CmaStatus");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Find the CMA heap defined in kCmaTypeInfo, and then call reportCmaStatusAtom()
|
|
* to collect the CMA metrics from kPixelStatMm/cma/<cma_type> and upload them.
|
|
*/
|
|
void MmMetricsReporter::logCmaStatus(const std::shared_ptr<IStats> &stats_client) {
|
|
std::string cma_root = android::base::StringPrintf("%s/cma", kPixelStatMm);
|
|
std::unique_ptr<DIR, int (*)(DIR *)> dir(opendir(cma_root.c_str()), closedir);
|
|
if (!dir)
|
|
return;
|
|
|
|
while (struct dirent *dp = readdir(dir.get())) {
|
|
if (dp->d_type != DT_DIR)
|
|
continue;
|
|
|
|
std::string cma_type(dp->d_name);
|
|
auto type = kCmaTypeInfo.find(cma_type);
|
|
if (type == kCmaTypeInfo.end())
|
|
continue;
|
|
|
|
reportCmaStatusAtom(stats_client, PixelAtoms::Atom::kCmaStatus, cma_type, type->second,
|
|
kCmaStatusInfo, &prev_cma_stat_);
|
|
reportCmaStatusAtom(stats_client, PixelAtoms::Atom::kCmaStatusExt, cma_type, type->second,
|
|
kCmaStatusExtInfo, &prev_cma_stat_ext_);
|
|
}
|
|
}
|
|
|
|
} // namespace pixel
|
|
} // namespace google
|
|
} // namespace hardware
|
|
} // namespace android
|