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flutter / third_party / perfetto / 6cdc068c2443741164872cdf5e789fe040d155b0 / . / src / traced / probes / ftrace / cpu_reader_unittest.cc
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/*
* Copyright (C) 2017 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 "src/traced/probes/ftrace/cpu_reader.h"
#include <string.h>
#include <sys/stat.h>
#include <sys/syscall.h>
#include "perfetto/base/build_config.h"
#include "perfetto/ext/base/utils.h"
#include "perfetto/protozero/proto_utils.h"
#include "perfetto/protozero/scattered_heap_buffer.h"
#include "perfetto/protozero/scattered_stream_writer.h"
#include "protos/perfetto/trace/ftrace/generic.pbzero.h"
#include "src/base/test/tmp_dir_tree.h"
#include "src/traced/probes/ftrace/event_info.h"
#include "src/traced/probes/ftrace/ftrace_config_muxer.h"
#include "src/traced/probes/ftrace/ftrace_procfs.h"
#include "src/traced/probes/ftrace/proto_translation_table.h"
#include "src/traced/probes/ftrace/test/cpu_reader_support.h"
#include "src/tracing/core/trace_writer_for_testing.h"
#include "test/gtest_and_gmock.h"
#include "protos/perfetto/trace/ftrace/dpu.gen.h"
#include "protos/perfetto/trace/ftrace/f2fs.gen.h"
#include "protos/perfetto/trace/ftrace/ftrace.gen.h"
#include "protos/perfetto/trace/ftrace/ftrace_event.gen.h"
#include "protos/perfetto/trace/ftrace/ftrace_event.pbzero.h"
#include "protos/perfetto/trace/ftrace/ftrace_event_bundle.gen.h"
#include "protos/perfetto/trace/ftrace/ftrace_event_bundle.pbzero.h"
#include "protos/perfetto/trace/ftrace/ftrace_stats.gen.h"
#include "protos/perfetto/trace/ftrace/ftrace_stats.pbzero.h"
#include "protos/perfetto/trace/ftrace/generic.gen.h"
#include "protos/perfetto/trace/ftrace/power.gen.h"
#include "protos/perfetto/trace/ftrace/raw_syscalls.gen.h"
#include "protos/perfetto/trace/ftrace/sched.gen.h"
#include "protos/perfetto/trace/ftrace/task.gen.h"
#include "protos/perfetto/trace/trace_packet.gen.h"
#include "src/traced/probes/ftrace/test/test_messages.gen.h"
#include "src/traced/probes/ftrace/test/test_messages.pbzero.h"
using protozero::proto_utils::ProtoSchemaType;
using testing::_;
using testing::AnyNumber;
using testing::Contains;
using testing::Each;
using testing::ElementsAre;
using testing::ElementsAreArray;
using testing::EndsWith;
using testing::Eq;
using testing::IsEmpty;
using testing::NiceMock;
using testing::Not;
using testing::Pair;
using testing::Property;
using testing::Return;
using testing::SizeIs;
using testing::StartsWith;
namespace perfetto {
namespace {
using FtraceParseStatus = protos::pbzero::FtraceParseStatus;
FtraceDataSourceConfig EmptyConfig() {
return FtraceDataSourceConfig{EventFilter{},
EventFilter{},
DisabledCompactSchedConfigForTesting(),
std::nullopt,
{},
{},
{},
false /*symbolize_ksyms*/,
50u,
{}};
}
constexpr uint64_t kNanoInSecond = 1000 * 1000 * 1000;
constexpr uint64_t kNanoInMicro = 1000;
::testing::AssertionResult WithinOneMicrosecond(uint64_t actual_ns,
uint64_t expected_s,
uint64_t expected_us) {
// Round to closest us.
uint64_t actual_us = (actual_ns + kNanoInMicro / 2) / kNanoInMicro;
uint64_t total_expected_us = expected_s * 1000 * 1000 + expected_us;
if (actual_us == total_expected_us)
return ::testing::AssertionSuccess();
return ::testing::AssertionFailure()
<< actual_ns / kNanoInSecond << "."
<< (actual_ns % kNanoInSecond) / kNanoInMicro << " vs. " << expected_s
<< "." << expected_us;
}
class MockFtraceProcfs : public FtraceProcfs {
public:
MockFtraceProcfs() : FtraceProcfs("/root/") {
ON_CALL(*this, NumberOfCpus()).WillByDefault(Return(1));
ON_CALL(*this, WriteToFile(_, _)).WillByDefault(Return(true));
ON_CALL(*this, ClearFile(_)).WillByDefault(Return(true));
EXPECT_CALL(*this, NumberOfCpus()).Times(AnyNumber());
}
MOCK_METHOD(bool,
WriteToFile,
(const std::string& path, const std::string& str),
(override));
MOCK_METHOD(char, ReadOneCharFromFile, (const std::string& path), (override));
MOCK_METHOD(bool, ClearFile, (const std::string& path), (override));
MOCK_METHOD(std::string,
ReadFileIntoString,
(const std::string& path),
(const, override));
MOCK_METHOD(size_t, NumberOfCpus, (), (const, override));
};
class CpuReaderTableTest : public ::testing::Test {
protected:
NiceMock<MockFtraceProcfs> ftrace_;
};
// Single class to manage the whole protozero -> scattered stream -> chunks ->
// single buffer -> real proto dance. Has a method: writer() to get an
// protozero ftrace bundle writer and a method ParseProto() to attempt to
// parse whatever has been written so far into a proto message.
template <class ZeroT, class ProtoT>
class ProtoProvider {
public:
explicit ProtoProvider(size_t chunk_size) : chunk_size_(chunk_size) {}
~ProtoProvider() = default;
ZeroT* writer() { return writer_.get(); }
void ResetWriter() { writer_.Reset(); }
// Stitch together the scattered chunks into a single buffer then attempt
// to parse the buffer as a FtraceEventBundle. Returns the FtraceEventBundle
// on success and nullptr on failure.
std::unique_ptr<ProtoT> ParseProto() {
auto bundle = std::make_unique<ProtoT>();
std::vector<uint8_t> buffer = writer_.SerializeAsArray();
if (!bundle->ParseFromArray(buffer.data(), buffer.size()))
return nullptr;
return bundle;
}
private:
ProtoProvider(const ProtoProvider&) = delete;
ProtoProvider& operator=(const ProtoProvider&) = delete;
size_t chunk_size_;
protozero::HeapBuffered<ZeroT> writer_;
};
using BundleProvider = ProtoProvider<protos::pbzero::FtraceEventBundle,
protos::gen::FtraceEventBundle>;
class BinaryWriter {
public:
BinaryWriter()
: size_(base::GetSysPageSize()),
page_(new uint8_t[size_]),
ptr_(page_.get()) {}
template <typename T>
void Write(T t) {
memcpy(ptr_, &t, sizeof(T));
ptr_ += sizeof(T);
PERFETTO_CHECK(ptr_ < ptr_ + size_);
}
void WriteFixedString(size_t n, const char* s) {
size_t length = strlen(s);
PERFETTO_CHECK(length < n);
char c;
while ((c = *s++)) {
Write<char>(c);
}
Write<char>('\0');
for (size_t i = 0; i < n - length - 1; i++) {
Write<char>('\xff');
}
}
std::unique_ptr<uint8_t[]> GetCopy() {
std::unique_ptr<uint8_t[]> buffer(new uint8_t[written()]);
memcpy(buffer.get(), page_.get(), written());
return buffer;
}
size_t written() { return static_cast<size_t>(ptr_ - page_.get()); }
private:
size_t size_;
std::unique_ptr<uint8_t[]> page_;
uint8_t* ptr_;
};
TEST(PageFromXxdTest, OneLine) {
std::string text = R"(
00000000: 0000 0000 0000 0000 0000 0000 0000 0000 ................
00000000: 0000 0000 5600 0000 0000 0000 0000 0000 ................
)";
auto page = PageFromXxd(text);
EXPECT_EQ(page.get()[0x14], 0x56);
}
TEST(PageFromXxdTest, ManyLines) {
std::string text = R"(
00000000: 1234 0000 0000 0000 0000 0000 0000 0056 ................
00000010: 7800 0000 0000 0000 0000 0000 0000 009a ................
00000020: 0000 0000 bc00 0000 00de 0000 0000 009a ................
)";
auto page = PageFromXxd(text);
EXPECT_EQ(page.get()[0x00], 0x12);
EXPECT_EQ(page.get()[0x01], 0x34);
EXPECT_EQ(page.get()[0x0f], 0x56);
EXPECT_EQ(page.get()[0x10], 0x78);
EXPECT_EQ(page.get()[0x1f], 0x9a);
EXPECT_EQ(page.get()[0x24], 0xbc);
EXPECT_EQ(page.get()[0x29], 0xde);
}
TEST(CpuReaderTest, BinaryWriter) {
BinaryWriter writer;
writer.Write<uint64_t>(1);
writer.Write<uint32_t>(2);
writer.Write<uint16_t>(3);
writer.Write<uint8_t>(4);
auto buffer = writer.GetCopy();
EXPECT_EQ(buffer.get()[0], 1);
EXPECT_EQ(buffer.get()[1], 0);
EXPECT_EQ(buffer.get()[2], 0);
EXPECT_EQ(buffer.get()[3], 0);
EXPECT_EQ(buffer.get()[4], 0);
EXPECT_EQ(buffer.get()[5], 0);
EXPECT_EQ(buffer.get()[6], 0);
EXPECT_EQ(buffer.get()[7], 0);
EXPECT_EQ(buffer.get()[8], 2);
}
TEST(ReadAndAdvanceTest, Number) {
uint64_t expected = 42;
uint64_t actual = 0;
uint8_t buffer[8] = {};
const uint8_t* start = buffer;
const uint8_t* ptr = buffer;
memcpy(&buffer, &expected, 8);
EXPECT_TRUE(CpuReader::ReadAndAdvance<uint64_t>(&ptr, ptr + 8, &actual));
EXPECT_EQ(ptr, start + 8);
EXPECT_EQ(actual, expected);
}
TEST(ReadAndAdvanceTest, PlainStruct) {
struct PlainStruct {
uint64_t timestamp;
uint64_t length;
};
uint64_t expected[2] = {42, 999};
PlainStruct actual;
uint8_t buffer[16] = {};
const uint8_t* start = buffer;
const uint8_t* ptr = buffer;
memcpy(&buffer, &expected, 16);
EXPECT_TRUE(CpuReader::ReadAndAdvance<PlainStruct>(&ptr, ptr + 16, &actual));
EXPECT_EQ(ptr, start + 16);
EXPECT_EQ(actual.timestamp, 42ul);
EXPECT_EQ(actual.length, 999ul);
}
TEST(ReadAndAdvanceTest, ComplexStruct) {
struct ComplexStruct {
uint64_t timestamp;
uint32_t length;
uint32_t : 24;
uint32_t overwrite : 8;
};
uint64_t expected[2] = {42, 0xcdffffffabababab};
ComplexStruct actual = {};
uint8_t buffer[16] = {};
const uint8_t* start = buffer;
const uint8_t* ptr = buffer;
memcpy(&buffer, &expected, 16);
EXPECT_TRUE(
CpuReader::ReadAndAdvance<ComplexStruct>(&ptr, ptr + 16, &actual));
EXPECT_EQ(ptr, start + 16);
EXPECT_EQ(actual.timestamp, 42ul);
EXPECT_EQ(actual.length, 0xabababab);
EXPECT_EQ(actual.overwrite, 0xCDu);
}
TEST(ReadAndAdvanceTest, Overruns) {
uint64_t result = 42;
uint8_t buffer[7] = {};
const uint8_t* start = buffer;
const uint8_t* ptr = buffer;
EXPECT_FALSE(CpuReader::ReadAndAdvance<uint64_t>(&ptr, ptr + 7, &result));
EXPECT_EQ(ptr, start);
EXPECT_EQ(result, 42ul);
}
TEST(ReadAndAdvanceTest, AtEnd) {
uint8_t result = 42;
uint8_t buffer[8] = {};
const uint8_t* start = buffer;
const uint8_t* ptr = buffer;
EXPECT_FALSE(CpuReader::ReadAndAdvance<uint8_t>(&ptr, ptr, &result));
EXPECT_EQ(ptr, start);
EXPECT_EQ(result, 42);
}
TEST(ReadAndAdvanceTest, Underruns) {
uint64_t expected = 42;
uint64_t actual = 0;
uint8_t buffer[9] = {};
const uint8_t* start = buffer;
const uint8_t* ptr = buffer;
memcpy(&buffer, &expected, 8);
EXPECT_TRUE(CpuReader::ReadAndAdvance<uint64_t>(&ptr, ptr + 8, &actual));
EXPECT_EQ(ptr, start + 8);
EXPECT_EQ(actual, expected);
}
TEST(ParsePageHeaderTest, WithOverrun) {
std::string text = R"(
00000000: 3ef3 db77 67a2 0100 f00f 0080 ffff ffff
)";
auto page = PageFromXxd(text);
// parse as if we're on a 32 bit kernel (4 byte "commit" field)
{
const uint8_t* ptr = page.get();
auto ret = CpuReader::ParsePageHeader(&ptr, 4u);
ASSERT_TRUE(ret.has_value());
CpuReader::PageHeader parsed = ret.value();
ASSERT_EQ(parsed.timestamp, 0x0001A26777DBF33Eull); // first 8 bytes
ASSERT_EQ(parsed.size, 0x0ff0u); // 4080
ASSERT_TRUE(parsed.lost_events);
// pointer advanced past the header (8+4 bytes)
ASSERT_EQ(ptr, page.get() + 12);
}
// parse as if we're on a 64 bit kernel (8 byte "commit" field)
{
const uint8_t* ptr = page.get();
auto ret = CpuReader::ParsePageHeader(&ptr, 8u);
ASSERT_TRUE(ret.has_value());
CpuReader::PageHeader parsed = ret.value();
ASSERT_EQ(parsed.timestamp, 0x0001A26777DBF33Eull); // first 8 bytes
ASSERT_EQ(parsed.size, 0x0ff0u); // 4080
ASSERT_TRUE(parsed.lost_events);
// pointer advanced past the header (8+8 bytes)
ASSERT_EQ(ptr, page.get() + 16);
}
}
// clang-format off
// # tracer: nop
// #
// # entries-in-buffer/entries-written: 1/1 #P:8
// #
// # _-----=> irqs-off
// # / _----=> need-resched
// # | / _---=> hardirq/softirq
// # || / _--=> preempt-depth
// # ||| / delay
// # TASK-PID CPU# |||| TIMESTAMP FUNCTION
// # | | | |||| | |
// sh-28712 [000] ...1 608934.535199: tracing_mark_write: Hello, world!
// clang-format on
static ExamplePage g_single_print{
"synthetic",
R"(
00000000: ba12 6a33 c628 0200 2c00 0000 0000 0000 ..j3.(..,.......
00000010: def0 ec67 8d21 0000 0800 0000 0500 0001 ...g.!..........
00000020: 2870 0000 ac5d 1661 86ff ffff 4865 6c6c (p...].a....Hell
00000030: 6f2c 2077 6f72 6c64 210a 00ff 0000 0000 o, world!.......
)",
};
class CpuReaderParsePagePayloadTest : public testing::Test {
protected:
CpuReader::Bundler* CreateBundler(const FtraceDataSourceConfig& ds_config) {
PERFETTO_CHECK(!bundler_.has_value());
writer_.emplace();
compact_sched_buf_ = std::make_unique<CompactSchedBuffer>();
bundler_.emplace(&writer_.value(), &metadata_, /*symbolizer=*/nullptr,
/*cpu=*/0,
/*ftrace_clock_snapshot=*/nullptr,
protos::pbzero::FTRACE_CLOCK_UNSPECIFIED,
compact_sched_buf_.get(), ds_config.compact_sched.enabled,
/*last_read_event_ts=*/0);
return &bundler_.value();
}
protos::gen::FtraceEventBundle GetBundle() {
PERFETTO_CHECK(bundler_.has_value());
PERFETTO_CHECK(writer_.has_value());
bundler_.reset();
protos::gen::FtraceEventBundle bundle =
writer_->GetOnlyTracePacket().ftrace_events();
writer_.reset();
return bundle;
}
std::vector<protos::gen::TracePacket> AllTracePackets() {
PERFETTO_CHECK(bundler_.has_value());
PERFETTO_CHECK(writer_.has_value());
bundler_.reset();
std::vector<protos::gen::TracePacket> packets =
writer_->GetAllTracePackets();
writer_.reset();
return packets;
}
FtraceMetadata metadata_;
std::optional<TraceWriterForTesting> writer_;
std::unique_ptr<CompactSchedBuffer> compact_sched_buf_;
std::optional<CpuReader::Bundler> bundler_;
uint64_t last_read_event_ts_ = 0;
};
TEST_F(CpuReaderParsePagePayloadTest, ParseSinglePrint) {
const ExamplePage* test_case = &g_single_print;
ProtoTranslationTable* table = GetTable(test_case->name);
auto page = PageFromXxd(test_case->data);
FtraceDataSourceConfig ds_config = EmptyConfig();
ds_config.event_filter.AddEnabledEvent(
table->EventToFtraceId(GroupAndName("ftrace", "print")));
const uint8_t* parse_pos = page.get();
std::optional<CpuReader::PageHeader> page_header =
CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
const uint8_t* page_end = page.get() + base::GetSysPageSize();
ASSERT_TRUE(page_header.has_value());
EXPECT_EQ(44ul, page_header->size);
EXPECT_FALSE(page_header->lost_events);
EXPECT_LE(parse_pos + page_header->size, page_end);
FtraceParseStatus status = CpuReader::ParsePagePayload(
parse_pos, &page_header.value(), table, &ds_config,
CreateBundler(ds_config), &metadata_, &last_read_event_ts_);
EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_OK);
auto bundle = GetBundle();
ASSERT_EQ(bundle.event().size(), 1u);
const protos::gen::FtraceEvent& event = bundle.event()[0];
EXPECT_EQ(event.pid(), 28712ul);
EXPECT_TRUE(WithinOneMicrosecond(event.timestamp(), 608934, 535199));
EXPECT_EQ(event.print().buf(), "Hello, world!\n");
}
// clang-format off
// # tracer: nop
// #
// # entries-in-buffer/entries-written: 2/2 #P:8
// #
// # _-----=> irqs-off
// # / _----=> need-resched
// # | / _---=> hardirq/softirq
// # || / _--=> preempt-depth
// # ||| / delay
// # TASK-PID TGID CPU# |||| TIMESTAMP FUNCTION
// # | | | | |||| | |
// echo-6908 ( 6908) [000] ...1 282762.884473: tracing_mark_write: qwertyuiopqwrtyuiopqwertyuiopqwertyuiopqwer[...]
// echo-6908 ( 6908) [000] ...1 282762.884492: tracing_mark_write:
// clang-format on
static ExamplePage g_really_long_event{
"synthetic",
R"(
00000000: 6be0 48dd 2b01 0100 e403 0000 0000 0000 k.H.+...........
00000010: 1e00 0000 0000 0000 0000 0000 c003 0000 ................
00000020: 0500 0001 fc1a 0000 4096 3615 9cff ffff ........@.6.....
00000030: 7177 6572 7479 7569 6f70 7177 7274 7975 qwertyuiopqwrtyu
00000040: 696f 7071 7765 7274 7975 696f 7071 7765 iopqwertyuiopqwe
00000050: 7274 7975 696f 7071 7765 7274 7975 696f rtyuiopqwertyuio
00000060: 7071 7772 7479 7569 6f70 7177 6572 7479 pqwrtyuiopqwerty
00000070: 7569 6f70 7177 6572 7479 7569 6f71 7765 uiopqwertyuioqwe
00000080: 7274 7975 696f 7071 7772 7479 7569 6f70 rtyuiopqwrtyuiop
00000090: 7177 6572 7479 7569 6f70 7177 6572 7479 qwertyuiopqwerty
000000a0: 7569 6f71 7765 7274 7975 696f 7071 7772 uioqwertyuiopqwr
000000b0: 7479 7569 6f70 7177 6572 7479 7569 6f70 tyuiopqwertyuiop
000000c0: 7177 6572 7479 7569 6f70 7070 7177 6572 qwertyuiopppqwer
000000d0: 7479 7569 6f70 7177 7274 7975 696f 7071 tyuiopqwrtyuiopq
000000e0: 7765 7274 7975 696f 7071 7765 7274 7975 wertyuiopqwertyu
000000f0: 696f 7071 7765 7274 7975 696f 7071 7772 iopqwertyuiopqwr
00000100: 7479 7569 6f70 7177 6572 7479 7569 6f70 tyuiopqwertyuiop
00000110: 7177 6572 7479 7569 6f71 7765 7274 7975 qwertyuioqwertyu
00000120: 696f 7071 7772 7479 7569 6f70 7177 6572 iopqwrtyuiopqwer
00000130: 7479 7569 6f70 7177 6572 7479 7569 6f71 tyuiopqwertyuioq
00000140: 7765 7274 7975 696f 7071 7772 7479 7569 wertyuiopqwrtyui
00000150: 6f70 7177 6572 7479 7569 6f70 7177 6572 opqwertyuiopqwer
00000160: 7479 7569 6f70 7070 7177 6572 7479 7569 tyuiopppqwertyui
00000170: 6f70 7177 7274 7975 696f 7071 7765 7274 opqwrtyuiopqwert
00000180: 7975 696f 7071 7765 7274 7975 696f 7071 yuiopqwertyuiopq
00000190: 7765 7274 7975 696f 7071 7772 7479 7569 wertyuiopqwrtyui
000001a0: 6f70 7177 6572 7479 7569 6f70 7177 6572 opqwertyuiopqwer
000001b0: 7479 7569 6f71 7765 7274 7975 696f 7071 tyuioqwertyuiopq
000001c0: 7772 7479 7569 6f70 7177 6572 7479 7569 wrtyuiopqwertyui
000001d0: 6f70 7177 6572 7479 7569 6f71 7765 7274 opqwertyuioqwert
000001e0: 7975 696f 7071 7772 7479 7569 6f70 7177 yuiopqwrtyuiopqw
000001f0: 6572 7479 7569 6f70 7177 6572 7479 7569 ertyuiopqwertyui
00000200: 6f70 7070 7177 6572 7479 7569 6f70 7177 opppqwertyuiopqw
00000210: 7274 7975 696f 7071 7765 7274 7975 696f rtyuiopqwertyuio
00000220: 7071 7765 7274 7975 696f 7071 7765 7274 pqwertyuiopqwert
00000230: 7975 696f 7071 7772 7479 7569 6f70 7177 yuiopqwrtyuiopqw
00000240: 6572 7479 7569 6f70 7177 6572 7479 7569 ertyuiopqwertyui
00000250: 6f71 7765 7274 7975 696f 7071 7772 7479 oqwertyuiopqwrty
00000260: 7569 6f70 7177 6572 7479 7569 6f70 7177 uiopqwertyuiopqw
00000270: 6572 7479 7569 6f71 7765 7274 7975 696f ertyuioqwertyuio
00000280: 7071 7772 7479 7569 6f70 7177 6572 7479 pqwrtyuiopqwerty
00000290: 7569 6f70 7177 6572 7479 7569 6f70 7070 uiopqwertyuioppp
000002a0: 7177 6572 7479 7569 6f70 7177 7274 7975 qwertyuiopqwrtyu
000002b0: 696f 7071 7765 7274 7975 696f 7071 7765 iopqwertyuiopqwe
000002c0: 7274 7975 696f 7071 7765 7274 7975 696f rtyuiopqwertyuio
000002d0: 7071 7772 7479 7569 6f70 7177 6572 7479 pqwrtyuiopqwerty
000002e0: 7569 6f70 7177 6572 7479 7569 6f71 7765 uiopqwertyuioqwe
000002f0: 7274 7975 696f 7071 7772 7479 7569 6f70 rtyuiopqwrtyuiop
00000300: 7177 6572 7479 7569 6f70 7177 6572 7479 qwertyuiopqwerty
00000310: 7569 6f71 7765 7274 7975 696f 7071 7772 uioqwertyuiopqwr
00000320: 7479 7569 6f70 7177 6572 7479 7569 6f70 tyuiopqwertyuiop
00000330: 7177 6572 7479 7569 6f70 7070 7177 6572 qwertyuiopppqwer
00000340: 7479 7569 6f70 7177 7274 7975 696f 7071 tyuiopqwrtyuiopq
00000350: 7765 7274 7975 696f 7071 7765 7274 7975 wertyuiopqwertyu
00000360: 696f 7071 7765 7274 7975 696f 7071 7772 iopqwertyuiopqwr
00000370: 7479 7569 6f70 7177 6572 7479 7569 6f70 tyuiopqwertyuiop
00000380: 7177 6572 7479 7569 6f71 7765 7274 7975 qwertyuioqwertyu
00000390: 696f 7071 7772 7479 7569 6f70 7177 6572 iopqwrtyuiopqwer
000003a0: 7479 7569 6f70 7177 6572 7479 7569 6f71 tyuiopqwertyuioq
000003b0: 7765 7274 7975 696f 7071 7772 7479 7569 wertyuiopqwrtyui
000003c0: 6f70 7177 6572 7479 7569 6f70 7177 6572 opqwertyuiopqwer
000003d0: 7479 7569 6f70 7070 0a00 5115 6562 0900 tyuioppp..Q.eb..
000003e0: 0500 0001 fc1a 0000 4096 3615 9cff ffff ........@.6.....
000003f0: 0a00 0000 0000 0000 0000 0000 0000 0000 ................
00000400: 0000 0000 0000 0000 0000 0000 0000 0000 ................
00000410: 0000 0000 0000 0000 0000 0000 0000 0000 ................
00000420: 0000 0000 0000 0000 0000 0000 0000 0000 ................
)",
};
TEST_F(CpuReaderParsePagePayloadTest, ReallyLongEvent) {
const ExamplePage* test_case = &g_really_long_event;
ProtoTranslationTable* table = GetTable(test_case->name);
auto page = PageFromXxd(test_case->data);
FtraceDataSourceConfig ds_config = EmptyConfig();
ds_config.event_filter.AddEnabledEvent(
table->EventToFtraceId(GroupAndName("ftrace", "print")));
const uint8_t* parse_pos = page.get();
std::optional<CpuReader::PageHeader> page_header =
CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
const uint8_t* page_end = page.get() + base::GetSysPageSize();
ASSERT_TRUE(page_header.has_value());
EXPECT_FALSE(page_header->lost_events);
EXPECT_LE(parse_pos + page_header->size, page_end);
CpuReader::ParsePagePayload(parse_pos, &page_header.value(), table,
&ds_config, CreateBundler(ds_config), &metadata_,
&last_read_event_ts_);
auto bundle = GetBundle();
const protos::gen::FtraceEvent& long_print = bundle.event()[0];
EXPECT_THAT(long_print.print().buf(), StartsWith("qwerty"));
EXPECT_THAT(long_print.print().buf(), EndsWith("ppp\n"));
const protos::gen::FtraceEvent& newline = bundle.event()[1];
EXPECT_EQ(newline.print().buf(), "\n");
}
// This event is as the event for ParseSinglePrint above except the string
// is extended and not null terminated.
static ExamplePage g_single_print_non_null_terminated{
"synthetic",
R"(
00000000: ba12 6a33 c628 0200 2c00 0000 0000 0000 ..j3.(..,.......
00000010: def0 ec67 8d21 0000 0800 0000 0500 0001 ...g.!..........
00000020: 2870 0000 ac5d 1661 86ff ffff 4865 6c6c (p...].a....Hell
00000030: 6f2c 2077 6f72 6c64 2161 6161 6161 6161 o, world!aaaaaaa
00000040: 6161 6161 6161 6161 6161 6161 6161 6161 aaaaaaaaaaaaaaaa
)",
};
TEST_F(CpuReaderParsePagePayloadTest, ParseSinglePrintNonNullTerminated) {
const ExamplePage* test_case = &g_single_print_non_null_terminated;
ProtoTranslationTable* table = GetTable(test_case->name);
auto page = PageFromXxd(test_case->data);
FtraceDataSourceConfig ds_config = EmptyConfig();
ds_config.event_filter.AddEnabledEvent(
table->EventToFtraceId(GroupAndName("ftrace", "print")));
const uint8_t* parse_pos = page.get();
std::optional<CpuReader::PageHeader> page_header =
CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
const uint8_t* page_end = page.get() + base::GetSysPageSize();
ASSERT_TRUE(page_header.has_value());
EXPECT_FALSE(page_header->lost_events);
EXPECT_LE(parse_pos + page_header->size, page_end);
FtraceParseStatus status = CpuReader::ParsePagePayload(
parse_pos, &page_header.value(), table, &ds_config,
CreateBundler(ds_config), &metadata_, &last_read_event_ts_);
EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_OK);
auto bundle = GetBundle();
ASSERT_EQ(bundle.event().size(), 1u);
const protos::gen::FtraceEvent& event = bundle.event()[0];
EXPECT_EQ(event.pid(), 28712ul);
EXPECT_TRUE(WithinOneMicrosecond(event.timestamp(), 608934, 535199));
EXPECT_EQ(event.print().buf(), "Hello, world!aaa");
}
static ExamplePage g_single_print_zero_size{
"synthetic",
R"(
00000000: ba12 6a33 c628 0200 2c00 0000 0000 0000 ..j3.(..,.......
00000010: def0 ec67 8d21 0000 0800 0000 0500 0001 ...g.!..........
00000020: 2870 0000 ac5d 1661 86ff ffff 0000 0000 (p...].a........
00000030: 0000 0000 0000 0000 0000 0000 0000 0000 ................
00000040: 0000 0000 0000 0000 0000 0000 0000 0000 ................
)",
};
TEST_F(CpuReaderParsePagePayloadTest, ParseSinglePrintZeroSize) {
const ExamplePage* test_case = &g_single_print_zero_size;
ProtoTranslationTable* table = GetTable(test_case->name);
auto page = PageFromXxd(test_case->data);
FtraceDataSourceConfig ds_config = EmptyConfig();
ds_config.event_filter.AddEnabledEvent(
table->EventToFtraceId(GroupAndName("ftrace", "print")));
const uint8_t* parse_pos = page.get();
std::optional<CpuReader::PageHeader> page_header =
CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
const uint8_t* page_end = page.get() + base::GetSysPageSize();
ASSERT_TRUE(page_header.has_value());
EXPECT_FALSE(page_header->lost_events);
EXPECT_LE(parse_pos + page_header->size, page_end);
FtraceParseStatus status = CpuReader::ParsePagePayload(
parse_pos, &page_header.value(), table, &ds_config,
CreateBundler(ds_config), &metadata_, &last_read_event_ts_);
EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_OK);
auto bundle = GetBundle();
ASSERT_EQ(bundle.event().size(), 1u);
const protos::gen::FtraceEvent& event = bundle.event()[0];
EXPECT_EQ(event.pid(), 28712ul);
EXPECT_TRUE(WithinOneMicrosecond(event.timestamp(), 608934, 535199));
EXPECT_TRUE(event.print().has_buf());
EXPECT_EQ(event.print().buf(), "");
}
TEST_F(CpuReaderParsePagePayloadTest, FilterByEvent) {
const ExamplePage* test_case = &g_single_print;
ProtoTranslationTable* table = GetTable(test_case->name);
auto page = PageFromXxd(test_case->data);
FtraceDataSourceConfig ds_config = EmptyConfig();
const uint8_t* parse_pos = page.get();
std::optional<CpuReader::PageHeader> page_header =
CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
ASSERT_TRUE(page_header.has_value());
EXPECT_FALSE(page_header->lost_events);
FtraceParseStatus status = CpuReader::ParsePagePayload(
parse_pos, &page_header.value(), table, &ds_config,
CreateBundler(ds_config), &metadata_, &last_read_event_ts_);
EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_OK);
EXPECT_THAT(AllTracePackets(), IsEmpty());
}
// clang-format off
// # tracer: nop
// #
// # entries-in-buffer/entries-written: 3/3 #P:8
// #
// # _-----=> irqs-off
// # / _----=> need-resched
// # | / _---=> hardirq/softirq
// # || / _--=> preempt-depth
// # ||| / delay
// # TASK-PID CPU# |||| TIMESTAMP FUNCTION
// # | | | |||| | |
// sh-30693 [000] ...1 615436.216806: tracing_mark_write: Hello, world!
// sh-30693 [000] ...1 615486.377232: tracing_mark_write: Good afternoon, world!
// sh-30693 [000] ...1 615495.632679: tracing_mark_write: Goodbye, world!
// clang-format on
static ExamplePage g_three_prints{
"synthetic",
R"(
00000000: a3ab 1569 bc2f 0200 9400 0000 0000 0000 ...i./..........
00000010: 1e00 0000 0000 0000 0800 0000 0500 0001 ................
00000020: e577 0000 ac5d 1661 86ff ffff 4865 6c6c .w...].a....Hell
00000030: 6f2c 2077 6f72 6c64 210a 0000 5e32 6bb9 o, world!...^2k.
00000040: 7501 0000 0b00 0000 0500 0001 e577 0000 u............w..
00000050: ac5d 1661 86ff ffff 476f 6f64 2061 6674 .].a....Good aft
00000060: 6572 6e6f 6f6e 2c20 776f 726c 6421 0a00 ernoon, world!..
00000070: 0000 0000 9e6a 5df5 4400 0000 0900 0000 .....j].D.......
00000080: 0500 0001 e577 0000 ac5d 1661 86ff ffff .....w...].a....
00000090: 476f 6f64 6279 652c 2077 6f72 6c64 210a Goodbye, world!.
000000a0: 0051 0000 0000 0000 0000 0000 0000 0000 .Q..............
)",
};
TEST_F(CpuReaderParsePagePayloadTest, ParseThreePrint) {
const ExamplePage* test_case = &g_three_prints;
ProtoTranslationTable* table = GetTable(test_case->name);
auto page = PageFromXxd(test_case->data);
FtraceDataSourceConfig ds_config = EmptyConfig();
ds_config.event_filter.AddEnabledEvent(
table->EventToFtraceId(GroupAndName("ftrace", "print")));
const uint8_t* parse_pos = page.get();
std::optional<CpuReader::PageHeader> page_header =
CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
const uint8_t* page_end = page.get() + base::GetSysPageSize();
ASSERT_TRUE(page_header.has_value());
EXPECT_FALSE(page_header->lost_events);
EXPECT_LE(parse_pos + page_header->size, page_end);
FtraceParseStatus status = CpuReader::ParsePagePayload(
parse_pos, &page_header.value(), table, &ds_config,
CreateBundler(ds_config), &metadata_, &last_read_event_ts_);
EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_OK);
auto bundle = GetBundle();
ASSERT_EQ(bundle.event().size(), 3u);
{
const protos::gen::FtraceEvent& event = bundle.event()[0];
EXPECT_EQ(event.pid(), 30693ul);
EXPECT_TRUE(WithinOneMicrosecond(event.timestamp(), 615436, 216806));
EXPECT_EQ(event.print().buf(), "Hello, world!\n");
}
{
const protos::gen::FtraceEvent& event = bundle.event()[1];
EXPECT_EQ(event.pid(), 30693ul);
EXPECT_TRUE(WithinOneMicrosecond(event.timestamp(), 615486, 377232));
EXPECT_EQ(event.print().buf(), "Good afternoon, world!\n");
}
{
const protos::gen::FtraceEvent& event = bundle.event()[2];
EXPECT_EQ(event.pid(), 30693ul);
EXPECT_TRUE(WithinOneMicrosecond(event.timestamp(), 615495, 632679));
EXPECT_EQ(event.print().buf(), "Goodbye, world!\n");
}
}
TEST_F(CpuReaderParsePagePayloadTest, ParsePrintWithAndWithoutFilter) {
using FtraceEventBundle = protos::gen::FtraceEventBundle;
using FtraceEvent = protos::gen::FtraceEvent;
using PrintFtraceEvent = protos::gen::PrintFtraceEvent;
const ExamplePage* test_case = &g_three_prints;
ProtoTranslationTable* table = GetTable(test_case->name);
auto page = PageFromXxd(test_case->data);
const uint8_t* parse_pos = page.get();
std::optional<CpuReader::PageHeader> page_header =
CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
const uint8_t* page_end = page.get() + base::GetSysPageSize();
ASSERT_TRUE(page_header.has_value());
ASSERT_FALSE(page_header->lost_events);
ASSERT_LE(parse_pos + page_header->size, page_end);
{
FtraceDataSourceConfig ds_config_no_filter = EmptyConfig();
ds_config_no_filter.event_filter.AddEnabledEvent(
table->EventToFtraceId(GroupAndName("ftrace", "print")));
FtraceParseStatus status = CpuReader::ParsePagePayload(
parse_pos, &page_header.value(), table, &ds_config_no_filter,
CreateBundler(ds_config_no_filter), &metadata_, &last_read_event_ts_);
EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_OK);
auto bundle = GetBundle();
EXPECT_THAT(
bundle,
Property(
&FtraceEventBundle::event,
ElementsAre(
Property(&FtraceEvent::print,
Property(&PrintFtraceEvent::buf, "Hello, world!\n")),
Property(&FtraceEvent::print,
Property(&PrintFtraceEvent::buf,
"Good afternoon, world!\n")),
Property(&FtraceEvent::print, Property(&PrintFtraceEvent::buf,
"Goodbye, world!\n")))));
}
{
FtraceDataSourceConfig ds_config_with_filter = EmptyConfig();
ds_config_with_filter.event_filter.AddEnabledEvent(
table->EventToFtraceId(GroupAndName("ftrace", "print")));
FtraceConfig::PrintFilter conf;
auto* rule = conf.add_rules();
rule->set_prefix("Good ");
rule->set_allow(false);
ds_config_with_filter.print_filter =
FtracePrintFilterConfig::Create(conf, table);
ASSERT_TRUE(ds_config_with_filter.print_filter.has_value());
FtraceParseStatus status = CpuReader::ParsePagePayload(
parse_pos, &page_header.value(), table, &ds_config_with_filter,
CreateBundler(ds_config_with_filter), &metadata_, &last_read_event_ts_);
EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_OK);
auto bundle = GetBundle();
EXPECT_THAT(
bundle,
Property(
&FtraceEventBundle::event,
ElementsAre(
Property(&FtraceEvent::print,
Property(&PrintFtraceEvent::buf, "Hello, world!\n")),
Property(&FtraceEvent::print, Property(&PrintFtraceEvent::buf,
"Goodbye, world!\n")))));
}
}
TEST(CpuReaderTest, ProcessPagesForDataSourceNoEmptyPackets) {
const ExamplePage* test_case = &g_three_prints;
ProtoTranslationTable* table = GetTable(test_case->name);
auto page = PageFromXxd(test_case->data);
std::vector<const void*> test_page_order = {
page.get(), page.get(), page.get(), page.get(),
page.get(), page.get(), page.get(), page.get()};
// Prepare a buffer with 8 contiguous pages, with the above contents.
static constexpr size_t kTestPages = 8;
std::unique_ptr<uint8_t[]> buf(
new uint8_t[base::GetSysPageSize() * kTestPages]());
for (size_t i = 0; i < kTestPages; i++) {
void* dest = buf.get() + (i * base::GetSysPageSize());
memcpy(dest, static_cast<const void*>(test_page_order[i]),
base::GetSysPageSize());
}
auto compact_sched_buf = std::make_unique<CompactSchedBuffer>();
{
FtraceMetadata metadata{};
FtraceDataSourceConfig with_filter = EmptyConfig();
with_filter.event_filter.AddEnabledEvent(
table->EventToFtraceId(GroupAndName("ftrace", "print")));
FtraceConfig::PrintFilter conf;
auto* rule = conf.add_rules();
rule->set_prefix("");
rule->set_allow(false);
with_filter.print_filter = FtracePrintFilterConfig::Create(conf, table);
ASSERT_TRUE(with_filter.print_filter.has_value());
TraceWriterForTesting trace_writer;
base::FlatSet<protos::pbzero::FtraceParseStatus> parse_errors;
uint64_t last_read_event_ts = 0;
bool success = CpuReader::ProcessPagesForDataSource(
&trace_writer, &metadata, /*cpu=*/1, &with_filter, &parse_errors,
&last_read_event_ts, buf.get(), kTestPages, compact_sched_buf.get(),
table,
/*symbolizer=*/nullptr,
/*ftrace_clock_snapshot=*/nullptr,
protos::pbzero::FTRACE_CLOCK_UNSPECIFIED);
EXPECT_TRUE(success);
// Check that the data source doesn't emit any packet, not even empty
// packets.
EXPECT_THAT(trace_writer.GetAllTracePackets(), IsEmpty());
}
{
FtraceMetadata metadata{};
FtraceDataSourceConfig without_filter = EmptyConfig();
without_filter.event_filter.AddEnabledEvent(
table->EventToFtraceId(GroupAndName("ftrace", "print")));
TraceWriterForTesting trace_writer;
base::FlatSet<protos::pbzero::FtraceParseStatus> parse_errors;
uint64_t last_read_event_ts = 0;
bool success = CpuReader::ProcessPagesForDataSource(
&trace_writer, &metadata, /*cpu=*/1, &without_filter, &parse_errors,
&last_read_event_ts, buf.get(), kTestPages, compact_sched_buf.get(),
table,
/*symbolizer=*/nullptr,
/*ftrace_clock_snapshot=*/nullptr,
protos::pbzero::FTRACE_CLOCK_UNSPECIFIED);
EXPECT_TRUE(success);
EXPECT_THAT(trace_writer.GetAllTracePackets(), Not(IsEmpty()));
}
}
// clang-format off
// # tracer: nop
// #
// # entries-in-buffer/entries-written: 6/6 #P:8
// #
// # _-----=> irqs-off
// # / _----=> need-resched
// # | / _---=> hardirq/softirq
// # || / _--=> preempt-depth
// # ||| / delay
// # TASK-PID CPU# |||| TIMESTAMP FUNCTION
// # | | | |||| | |
// ksoftirqd/0-3 [000] d..3 1045157.722134: sched_switch: prev_comm=ksoftirqd/0 prev_pid=3 prev_prio=120 prev_state=S ==> next_comm=sleep next_pid=3733 next_prio=120
// sleep-3733 [000] d..3 1045157.725035: sched_switch: prev_comm=sleep prev_pid=3733 prev_prio=120 prev_state=R+ ==> next_comm=rcuop/0 next_pid=10 next_prio=120
// rcu_preempt-7 [000] d..3 1045157.725182: sched_switch: prev_comm=rcu_preempt prev_pid=7 prev_prio=120 prev_state=S ==> next_comm=sleep next_pid=3733 next_prio=120
// sleep-3733 [000] d..3 1045157.725671: sched_switch: prev_comm=sleep prev_pid=3733 prev_prio=120 prev_state=R+ ==> next_comm=sh next_pid=3513 next_prio=120
// sh-3513 [000] d..3 1045157.726668: sched_switch: prev_comm=sh prev_pid=3513 prev_prio=120 prev_state=S ==> next_comm=sleep next_pid=3733 next_prio=120
// sleep-3733 [000] d..3 1045157.726697: sched_switch: prev_comm=sleep prev_pid=3733 prev_prio=120 prev_state=x ==> next_comm=kworker/u16:3 next_pid=3681 next_prio=120
// clang-format on
static ExamplePage g_six_sched_switch{
"synthetic",
R"(
00000000: 2b16 c3be 90b6 0300 a001 0000 0000 0000 +...............
00000010: 1e00 0000 0000 0000 1000 0000 2f00 0103 ............/...
00000020: 0300 0000 6b73 6f66 7469 7271 642f 3000 ....ksoftirqd/0.
00000030: 0000 0000 0300 0000 7800 0000 0100 0000 ........x.......
00000040: 0000 0000 736c 6565 7000 722f 3000 0000 ....sleep.r/0...
00000050: 0000 0000 950e 0000 7800 0000 b072 8805 ........x....r..
00000060: 2f00 0103 950e 0000 736c 6565 7000 722f /.......sleep.r/
00000070: 3000 0000 0000 0000 950e 0000 7800 0000 0...........x...
00000080: 0008 0000 0000 0000 7263 756f 702f 3000 ........rcuop/0.
00000090: 0000 0000 0000 0000 0a00 0000 7800 0000 ............x...
000000a0: f0b0 4700 2f00 0103 0700 0000 7263 755f ..G./.......rcu_
000000b0: 7072 6565 6d70 7400 0000 0000 0700 0000 preempt.........
000000c0: 7800 0000 0100 0000 0000 0000 736c 6565 x...........slee
000000d0: 7000 722f 3000 0000 0000 0000 950e 0000 p.r/0...........
000000e0: 7800 0000 1001 ef00 2f00 0103 950e 0000 x......./.......
000000f0: 736c 6565 7000 722f 3000 0000 0000 0000 sleep.r/0.......
00000100: 950e 0000 7800 0000 0008 0000 0000 0000 ....x...........
00000110: 7368 0064 0065 722f 3000 0000 0000 0000 sh.d.er/0.......
00000120: b90d 0000 7800 0000 f0c7 e601 2f00 0103 ....x......./...
00000130: b90d 0000 7368 0064 0065 722f 3000 0000 ....sh.d.er/0...
00000140: 0000 0000 b90d 0000 7800 0000 0100 0000 ........x.......
00000150: 0000 0000 736c 6565 7000 722f 3000 0000 ....sleep.r/0...
00000160: 0000 0000 950e 0000 7800 0000 d030 0e00 ........x....0..
00000170: 2f00 0103 950e 0000 736c 6565 7000 722f /.......sleep.r/
00000180: 3000 0000 0000 0000 950e 0000 7800 0000 0...........x...
00000190: 4000 0000 0000 0000 6b77 6f72 6b65 722f @.......kworker/
000001a0: 7531 363a 3300 0000 610e 0000 7800 0000 u16:3...a...x...
000001b0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
)",
};
TEST_F(CpuReaderParsePagePayloadTest, ParseSixSchedSwitch) {
const ExamplePage* test_case = &g_six_sched_switch;
ProtoTranslationTable* table = GetTable(test_case->name);
auto page = PageFromXxd(test_case->data);
FtraceDataSourceConfig ds_config = EmptyConfig();
ds_config.event_filter.AddEnabledEvent(
table->EventToFtraceId(GroupAndName("sched", "sched_switch")));
const uint8_t* parse_pos = page.get();
std::optional<CpuReader::PageHeader> page_header =
CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
const uint8_t* page_end = page.get() + base::GetSysPageSize();
ASSERT_TRUE(page_header.has_value());
EXPECT_FALSE(page_header->lost_events);
EXPECT_LE(parse_pos + page_header->size, page_end);
FtraceParseStatus status = CpuReader::ParsePagePayload(
parse_pos, &page_header.value(), table, &ds_config,
CreateBundler(ds_config), &metadata_, &last_read_event_ts_);
EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_OK);
EXPECT_EQ(last_read_event_ts_, 1'045'157'726'697'236ULL);
auto bundle = GetBundle();
EXPECT_EQ(0u, bundle.previous_bundle_end_timestamp());
ASSERT_EQ(bundle.event().size(), 6u);
{
const protos::gen::FtraceEvent& event = bundle.event()[1];
EXPECT_EQ(event.pid(), 3733ul);
EXPECT_TRUE(WithinOneMicrosecond(event.timestamp(), 1045157, 725035));
EXPECT_EQ(event.sched_switch().prev_comm(), "sleep");
EXPECT_EQ(event.sched_switch().prev_pid(), 3733);
EXPECT_EQ(event.sched_switch().prev_prio(), 120);
EXPECT_EQ(event.sched_switch().next_comm(), "rcuop/0");
EXPECT_EQ(event.sched_switch().next_pid(), 10);
EXPECT_EQ(event.sched_switch().next_prio(), 120);
}
}
TEST_F(CpuReaderParsePagePayloadTest, ParseSixSchedSwitchCompactFormat) {
const ExamplePage* test_case = &g_six_sched_switch;
ProtoTranslationTable* table = GetTable(test_case->name);
auto page = PageFromXxd(test_case->data);
FtraceDataSourceConfig ds_config{EventFilter{},
EventFilter{},
EnabledCompactSchedConfigForTesting(),
std::nullopt,
{},
{},
{},
false /* symbolize_ksyms*/,
false /*preserve_ftrace_buffer*/,
{}};
ds_config.event_filter.AddEnabledEvent(
table->EventToFtraceId(GroupAndName("sched", "sched_switch")));
const uint8_t* parse_pos = page.get();
std::optional<CpuReader::PageHeader> page_header =
CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
const uint8_t* page_end = page.get() + base::GetSysPageSize();
ASSERT_TRUE(page_header.has_value());
EXPECT_FALSE(page_header->lost_events);
EXPECT_LE(parse_pos + page_header->size, page_end);
FtraceParseStatus status = CpuReader::ParsePagePayload(
parse_pos, &page_header.value(), table, &ds_config,
CreateBundler(ds_config), &metadata_, &last_read_event_ts_);
EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_OK);
EXPECT_EQ(last_read_event_ts_, 1'045'157'726'697'236ULL);
// sched switch fields were buffered:
EXPECT_LT(0u, bundler_->compact_sched_buf()->sched_switch().size());
EXPECT_LT(0u,
bundler_->compact_sched_buf()->interner().interned_comms_size());
// Write the buffer out & check the serialized format:
auto bundle = GetBundle();
const auto& compact_sched = bundle.compact_sched();
EXPECT_EQ(0u, bundle.previous_bundle_end_timestamp());
EXPECT_EQ(6u, compact_sched.switch_timestamp().size());
EXPECT_EQ(6u, compact_sched.switch_prev_state().size());
EXPECT_EQ(6u, compact_sched.switch_next_pid().size());
EXPECT_EQ(6u, compact_sched.switch_next_prio().size());
// 4 unique interned next_comm strings:
EXPECT_EQ(4u, compact_sched.intern_table().size());
EXPECT_EQ(6u, compact_sched.switch_next_comm_index().size());
// First event exactly as expected (absolute timestamp):
EXPECT_TRUE(WithinOneMicrosecond(compact_sched.switch_timestamp()[0], 1045157,
722134));
EXPECT_EQ(1, compact_sched.switch_prev_state()[0]);
EXPECT_EQ(3733, compact_sched.switch_next_pid()[0]);
EXPECT_EQ(120, compact_sched.switch_next_prio()[0]);
auto comm_intern_idx = compact_sched.switch_next_comm_index()[0];
std::string next_comm = compact_sched.intern_table()[comm_intern_idx];
EXPECT_EQ("sleep", next_comm);
}
// clang-format off
// # tracer: nop
// #
// # entries-in-buffer/entries-written: 23/23 #P:8
// #
// # _-----=> irqs-off/BH-disabled
// # / _----=> need-resched
// # | / _---=> hardirq/softirq
// # || / _--=> preempt-depth
// # ||| / _-=> migrate-disable
// # |||| / delay
// # TASK-PID CPU# ||||| TIMESTAMP FUNCTION
// # | | | ||||| | |
// <idle>-0 [000] d..2. 701500.111507: sched_switch: prev_comm=swapper/0 prev_pid=0 prev_prio=120 prev_state=R ==> next_comm=bash next_pid=219057 next_prio=120
// ls-219057 [000] d..3. 701500.115222: sched_waking: comm=kworker/u16:17 pid=203967 prio=120 target_cpu=006
// ls-219057 [000] d..3. 701500.115327: sched_waking: comm=kworker/u16:17 pid=203967 prio=120 target_cpu=006
// ls-219057 [000] d..3. 701500.115412: sched_waking: comm=kworker/u16:5 pid=205556 prio=120 target_cpu=004
// ls-219057 [000] d..3. 701500.115416: sched_waking: comm=kworker/u16:17 pid=203967 prio=120 target_cpu=006
// ls-219057 [000] dN.5. 701500.115801: sched_waking: comm=bash pid=217958 prio=120 target_cpu=006
// ls-219057 [000] d..2. 701500.115817: sched_switch: prev_comm=ls prev_pid=219057 prev_prio=120 prev_state=Z ==> next_comm=swapper/0 next_pid=0 next_prio=120
// clang-format on
static ExamplePage g_sched_page{
"synthetic_alt",
R"(
00000000: 67ce f4b8 027e 0200 5801 0000 0000 0000 g....~..X.......
00000010: 1e00 0000 0000 0000 1000 0000 3d01 0102 ............=...
00000020: 0000 0000 7377 6170 7065 722f 3000 0000 ....swapper/0...
00000030: 0000 0000 0000 0000 7800 0000 0000 0000 ........x.......
00000040: 0000 0000 6261 7368 0000 0000 0000 0000 ....bash........
00000050: 0000 0000 b157 0300 7800 0000 a9d2 1507 .....W..x.......
00000060: 4001 0103 b157 0300 6b77 6f72 6b65 722f @....W..kworker/
00000070: 7531 363a 3137 0000 bf1c 0300 7800 0000 u16:17......x...
00000080: 0600 0000 c953 3300 4001 0103 b157 0300 .....S3.@....W..
00000090: 6b77 6f72 6b65 722f 7531 363a 3137 0000 kworker/u16:17..
000000a0: bf1c 0300 7800 0000 0600 0000 0981 2900 ....x.........).
000000b0: 4001 0103 b157 0300 6b77 6f72 6b65 722f @....W..kworker/
000000c0: 7531 363a 3500 0000 f422 0300 7800 0000 u16:5...."..x...
000000d0: 0400 0000 89e0 0100 4001 0103 b157 0300 ........@....W..
000000e0: 6b77 6f72 6b65 722f 7531 363a 3137 0000 kworker/u16:17..
000000f0: bf1c 0300 7800 0000 0600 0000 e92c bc00 ....x........,..
00000100: 4001 2505 b157 0300 6261 7368 0000 0000 @.%..W..bash....
00000110: 0000 0000 0000 0000 6653 0300 7800 0000 ........fS..x...
00000120: 0600 0000 10f8 0700 3d01 0102 b157 0300 ........=....W..
00000130: 6c73 0000 0000 0000 0000 0000 0000 0000 ls..............
00000140: b157 0300 7800 0000 2000 0000 0000 0000 .W..x... .......
00000150: 7377 6170 7065 722f 3000 0000 0000 0000 swapper/0.......
00000160: 0000 0000 7800 0000 0000 0000 0000 0000 ....x...........
)",
};
TEST_F(CpuReaderParsePagePayloadTest, ParseCompactSchedSwitchAndWaking) {
const ExamplePage* test_case = &g_sched_page;
ProtoTranslationTable* table = GetTable(test_case->name);
auto page = PageFromXxd(test_case->data);
FtraceDataSourceConfig ds_config{EventFilter{},
EventFilter{},
EnabledCompactSchedConfigForTesting(),
std::nullopt,
{},
{},
{},
false /* symbolize_ksyms*/,
false /*preserve_ftrace_buffer*/,
{}};
ds_config.event_filter.AddEnabledEvent(
table->EventToFtraceId(GroupAndName("sched", "sched_switch")));
ds_config.event_filter.AddEnabledEvent(
table->EventToFtraceId(GroupAndName("sched", "sched_waking")));
const uint8_t* parse_pos = page.get();
std::optional<CpuReader::PageHeader> page_header =
CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
const uint8_t* page_end = page.get() + base::GetSysPageSize();
ASSERT_TRUE(page_header.has_value());
EXPECT_FALSE(page_header->lost_events);
EXPECT_LE(parse_pos + page_header->size, page_end);
FtraceParseStatus status = CpuReader::ParsePagePayload(
parse_pos, &page_header.value(), table, &ds_config,
CreateBundler(ds_config), &metadata_, &last_read_event_ts_);
EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_OK);
// sched fields were buffered:
EXPECT_LT(0u, bundler_->compact_sched_buf()->sched_switch().size());
EXPECT_LT(0u, bundler_->compact_sched_buf()->sched_waking().size());
EXPECT_LT(0u,
bundler_->compact_sched_buf()->interner().interned_comms_size());
// Write the buffer out & check the serialized format:
auto bundle = GetBundle();
const auto& compact_sched = bundle.compact_sched();
// 2 sched_switch events:
EXPECT_EQ(2u, compact_sched.switch_timestamp().size());
EXPECT_EQ(2u, compact_sched.switch_prev_state().size());
EXPECT_EQ(2u, compact_sched.switch_next_pid().size());
EXPECT_EQ(2u, compact_sched.switch_next_prio().size());
EXPECT_EQ(2u, compact_sched.switch_next_comm_index().size());
// 5 sched_waking events:
EXPECT_EQ(5u, compact_sched.waking_timestamp().size());
EXPECT_EQ(5u, compact_sched.waking_pid().size());
EXPECT_EQ(5u, compact_sched.waking_target_cpu().size());
EXPECT_EQ(5u, compact_sched.waking_prio().size());
EXPECT_EQ(5u, compact_sched.waking_comm_index().size());
EXPECT_EQ(5u, compact_sched.waking_common_flags().size());
// 4 unique interned comm strings:
EXPECT_EQ(4u, compact_sched.intern_table().size());
// First sched waking as expected:
EXPECT_EQ(compact_sched.waking_timestamp()[0], 701500115221756ull);
EXPECT_EQ(compact_sched.waking_pid()[0], 203967);
EXPECT_EQ(compact_sched.waking_target_cpu()[0], 6);
EXPECT_EQ(compact_sched.waking_prio()[0], 120);
EXPECT_EQ(compact_sched.waking_common_flags()[0], 1u);
auto comm_intern_idx = compact_sched.waking_comm_index()[0];
std::string comm = compact_sched.intern_table()[comm_intern_idx];
EXPECT_EQ("kworker/u16:17", comm);
}
TEST_F(CpuReaderParsePagePayloadTest, ParseKprobeAndKretprobe) {
char kprobe_fuse_file_write_iter_page[] =
R"(
00000000: b31b bfe2 a513 0000 1400 0000 0000 0000 ................
00000010: 0400 0000 ff05 48ff 8a33 0000 443d 0e91 ......H..3..D=..
00000020: ffff ffff 0000 0000 0000 0000 0000 0000 ................
)";
std::unique_ptr<uint8_t[]> page =
PageFromXxd(kprobe_fuse_file_write_iter_page);
base::TmpDirTree ftrace;
ftrace.AddFile("available_events", "perfetto_kprobes:fuse_file_write_iter\n");
ftrace.AddDir("events");
ftrace.AddFile(
"events/header_page",
R"( field: u64 timestamp; offset:0; size:8; signed:0;
field: local_t commit; offset:8; size:8; signed:1;
field: int overwrite; offset:8; size:1; signed:1;
field: char data; offset:16; size:4080; signed:1;
)");
ftrace.AddDir("events/perfetto_kprobes");
ftrace.AddDir("events/perfetto_kprobes/fuse_file_write_iter");
ftrace.AddFile("events/perfetto_kprobes/fuse_file_write_iter/format",
R"format(name: fuse_file_write_iter
ID: 1535
format:
field:unsigned short common_type; offset:0; size:2; signed:0;
field:unsigned char common_flags; offset:2; size:1; signed:0;
field:unsigned char common_preempt_count; offset:3; size:1; signed:0;
field:int common_pid; offset:4; size:4; signed:1;
field:unsigned long __probe_ip; offset:8; size:8; signed:0;
print fmt: "(%lx)", REC->__probe_ip
)format");
ftrace.AddFile("trace", "");
std::unique_ptr<FtraceProcfs> ftrace_procfs =
FtraceProcfs::Create(ftrace.path() + "/");
ASSERT_NE(ftrace_procfs.get(), nullptr);
std::unique_ptr<ProtoTranslationTable> table = ProtoTranslationTable::Create(
ftrace_procfs.get(), GetStaticEventInfo(), GetStaticCommonFieldsInfo());
table->GetOrCreateKprobeEvent(
GroupAndName("perfetto_kprobes", "fuse_file_write_iter"));
auto ftrace_evt_id = static_cast<uint32_t>(table->EventToFtraceId(
GroupAndName("perfetto_kprobes", "fuse_file_write_iter")));
FtraceDataSourceConfig ds_config = EmptyConfig();
ds_config.event_filter.AddEnabledEvent(ftrace_evt_id);
ds_config.kprobes[ftrace_evt_id] =
protos::pbzero::KprobeEvent::KprobeType::KPROBE_TYPE_INSTANT;
const uint8_t* parse_pos = page.get();
std::optional<CpuReader::PageHeader> page_header =
CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
const uint8_t* page_end = page.get() + base::GetSysPageSize();
ASSERT_TRUE(page_header.has_value());
EXPECT_FALSE(page_header->lost_events);
EXPECT_LE(parse_pos + page_header->size, page_end);
FtraceParseStatus status = CpuReader::ParsePagePayload(
parse_pos, &page_header.value(), table.get(), &ds_config,
CreateBundler(ds_config), &metadata_, &last_read_event_ts_);
EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_OK);
// Write the buffer out & check the serialized format:
auto bundle = GetBundle();
ASSERT_EQ(bundle.event_size(), 1);
EXPECT_EQ(bundle.event()[0].kprobe_event().name(), "fuse_file_write_iter");
EXPECT_EQ(bundle.event()[0].kprobe_event().type(),
protos::gen::KprobeEvent::KPROBE_TYPE_INSTANT);
}
TEST_F(CpuReaderTableTest, ParseAllFields) {
using FakeEventProvider =
ProtoProvider<pbzero::FakeFtraceEvent, gen::FakeFtraceEvent>;
uint16_t ftrace_event_id = 102;
std::vector<Field> common_fields;
{
common_fields.emplace_back(Field{});
Field* field = &common_fields.back();
field->ftrace_offset = 4;
field->ftrace_size = 4;
field->ftrace_type = kFtraceCommonPid32;
field->proto_field_id = 2;
field->proto_field_type = ProtoSchemaType::kInt32;
SetTranslationStrategy(field->ftrace_type, field->proto_field_type,
&field->strategy);
}
std::vector<Event> events;
events.emplace_back(Event{});
{
Event* event = &events.back();
event->name = "";
event->group = "";
event->proto_field_id = 42;
event->ftrace_event_id = ftrace_event_id;
{
// uint32 -> uint32
event->fields.emplace_back(Field{});
Field* field = &event->fields.back();
field->ftrace_offset = 8;
field->ftrace_size = 4;
field->ftrace_type = kFtraceUint32;
field->proto_field_id = 1;
field->proto_field_type = ProtoSchemaType::kUint32;
}
{
// pid32 -> uint32
event->fields.emplace_back(Field{});
Field* field = &event->fields.back();
field->ftrace_offset = 12;
field->ftrace_size = 4;
field->ftrace_type = kFtracePid32;
field->proto_field_id = 2;
field->proto_field_type = ProtoSchemaType::kInt32;
}
{
// dev32 -> uint64
event->fields.emplace_back(Field{});
Field* field = &event->fields.back();
field->ftrace_offset = 16;
field->ftrace_size = 4;
field->ftrace_type = kFtraceDevId32;
field->proto_field_id = 3;
field->proto_field_type = ProtoSchemaType::kUint64;
}
{
// ino_t (32bit) -> uint64
event->fields.emplace_back(Field{});
Field* field = &event->fields.back();
field->ftrace_offset = 20;
field->ftrace_size = 4;
field->ftrace_type = kFtraceInode32;
field->proto_field_id = 4;
field->proto_field_type = ProtoSchemaType::kUint64;
}
{
// dev64 -> uint64
event->fields.emplace_back(Field{});
Field* field = &event->fields.back();
field->ftrace_offset = 24;
field->ftrace_size = 8;
field->ftrace_type = kFtraceDevId64;
field->proto_field_id = 5;
field->proto_field_type = ProtoSchemaType::kUint64;
}
{
// ino_t (64bit) -> uint64
event->fields.emplace_back(Field{});
Field* field = &event->fields.back();
field->ftrace_offset = 32;
field->ftrace_size = 8;
field->ftrace_type = kFtraceInode64;
field->proto_field_id = 6;
field->proto_field_type = ProtoSchemaType::kUint64;
}
{
// char[16] -> string
event->fields.emplace_back(Field{});
Field* field = &event->fields.back();
field->ftrace_offset = 40;
field->ftrace_size = 16;
field->ftrace_type = kFtraceFixedCString;
field->proto_field_id = 500;
field->proto_field_type = ProtoSchemaType::kString;
}
{
// char* -> string
event->fields.emplace_back(Field{});
Field* field = &event->fields.back();
field->ftrace_offset = 56;
field->ftrace_size = 8;
field->ftrace_type = kFtraceStringPtr;
field->proto_field_id = 503;
field->proto_field_type = ProtoSchemaType::kString;
}
{
// dataloc -> string
event->fields.emplace_back(Field{});
Field* field = &event->fields.back();
field->ftrace_offset = 65;
field->ftrace_size = 4;
field->ftrace_type = kFtraceDataLoc;
field->proto_field_id = 502;
field->proto_field_type = ProtoSchemaType::kString;
}
{
// char -> string
event->fields.emplace_back(Field{});
Field* field = &event->fields.back();
field->ftrace_offset = 69;
field->ftrace_size = 0;
field->ftrace_type = kFtraceCString;
field->proto_field_id = 501;
field->proto_field_type = ProtoSchemaType::kString;
}
for (Field& field : event->fields) {
SetTranslationStrategy(field.ftrace_type, field.proto_field_type,
&field.strategy);
}
}
PrintkMap printk_formats;
printk_formats.insert(0xffffff8504f51b23, "my_printk_format_string");
ProtoTranslationTable table(
&ftrace_, events, std::move(common_fields),
ProtoTranslationTable::DefaultPageHeaderSpecForTesting(),
InvalidCompactSchedEventFormatForTesting(), printk_formats);
FtraceDataSourceConfig ds_config = EmptyConfig();
FakeEventProvider provider(base::GetSysPageSize());
BinaryWriter writer;
// Must use the bit masks to translate between kernel and userspace device ids
// to generate the below examples
const uint32_t kKernelBlockDeviceId = 271581216;
const BlockDeviceID kUserspaceBlockDeviceId =
CpuReader::TranslateBlockDeviceIDToUserspace<BlockDeviceID>(
kKernelBlockDeviceId);
const uint64_t k64BitKernelBlockDeviceId = 4442450946;
const BlockDeviceID k64BitUserspaceBlockDeviceId =
CpuReader::TranslateBlockDeviceIDToUserspace<uint64_t>(
k64BitKernelBlockDeviceId);
writer.Write<int32_t>(1001); // Common field.
writer.Write<int32_t>(9999); // Common pid
writer.Write<int32_t>(1003); // Uint32 field
writer.Write<int32_t>(97); // Pid
writer.Write<int32_t>(kKernelBlockDeviceId); // Dev id
writer.Write<int32_t>(98); // Inode 32
writer.Write<int64_t>(k64BitKernelBlockDeviceId); // Dev id 64
writer.Write<int64_t>(99u); // Inode 64
writer.WriteFixedString(16, "Hello");
writer.Write<uint64_t>(0xffffff8504f51b23ULL); // char* (printk formats)
writer.Write<uint8_t>(0); // Deliberately mis-aligning.
writer.Write<uint32_t>(40 | 6 << 16);
writer.WriteFixedString(300, "Goodbye");
auto input = writer.GetCopy();
auto length = writer.written();
FtraceMetadata metadata{};
ASSERT_TRUE(CpuReader::ParseEvent(ftrace_event_id, input.get(),
input.get() + length, &table, &ds_config,
provider.writer(), &metadata));
auto event = provider.ParseProto();
ASSERT_TRUE(event);
EXPECT_EQ(event->common_pid(), 9999ul);
EXPECT_TRUE(event->has_all_fields());
EXPECT_EQ(event->all_fields().field_uint32(), 1003u);
EXPECT_EQ(event->all_fields().field_pid(), 97);
EXPECT_EQ(event->all_fields().field_dev_32(),
static_cast<uint32_t>(kUserspaceBlockDeviceId));
EXPECT_EQ(event->all_fields().field_inode_32(), 98u);
// TODO(primiano): for some reason this fails on mac.
#if !PERFETTO_BUILDFLAG(PERFETTO_OS_APPLE)
EXPECT_EQ(event->all_fields().field_dev_64(), k64BitUserspaceBlockDeviceId);
#endif
EXPECT_EQ(event->all_fields().field_inode_64(), 99u);
EXPECT_EQ(event->all_fields().field_char_16(), "Hello");
EXPECT_EQ(event->all_fields().field_char(), "Goodbye");
EXPECT_EQ(event->all_fields().field_data_loc(), "Hello");
EXPECT_EQ(event->all_fields().field_char_star(), "my_printk_format_string");
EXPECT_THAT(metadata.pids, Contains(97));
EXPECT_EQ(metadata.inode_and_device.size(), 2U);
EXPECT_THAT(metadata.inode_and_device,
Contains(Pair(98u, kUserspaceBlockDeviceId)));
EXPECT_THAT(metadata.inode_and_device,
Contains(Pair(99u, k64BitUserspaceBlockDeviceId)));
}
TEST(CpuReaderTest, SysEnterEvent) {
BinaryWriter writer;
ProtoTranslationTable* table = GetTable("synthetic");
FtraceDataSourceConfig ds_config = EmptyConfig();
const auto kSysEnterId = static_cast<uint16_t>(
table->EventToFtraceId(GroupAndName("raw_syscalls", "sys_enter")));
ASSERT_GT(kSysEnterId, 0ul);
constexpr uint32_t kPid = 23;
constexpr uint32_t kFd = 7;
constexpr auto kSyscall = SYS_close;
writer.Write<int32_t>(1001); // Common field.
writer.Write<int32_t>(kPid); // Common pid
writer.Write<int64_t>(kSyscall); // id
for (uint32_t i = 0; i < 6; ++i) {
writer.Write<uint64_t>(kFd + i); // args
}
auto input = writer.GetCopy();
auto length = writer.written();
BundleProvider bundle_provider(base::GetSysPageSize());
FtraceMetadata metadata{};
ASSERT_TRUE(CpuReader::ParseEvent(
kSysEnterId, input.get(), input.get() + length, table, &ds_config,
bundle_provider.writer()->add_event(), &metadata));
std::unique_ptr<protos::gen::FtraceEventBundle> a =
bundle_provider.ParseProto();
ASSERT_NE(a, nullptr);
ASSERT_EQ(a->event().size(), 1u);
const auto& event = a->event()[0].sys_enter();
EXPECT_EQ(event.id(), kSyscall);
for (uint32_t i = 0; i < 6; ++i) {
EXPECT_EQ(event.args()[i], kFd + i);
}
}
// MacOS fails on this ...but MacOS will never use cpu_reader so it's
// not a big problem.
#if PERFETTO_BUILDFLAG(PERFETTO_OS_APPLE)
#define MAYBE_SysExitEvent DISABLED_SysExitEvent
#else
#define MAYBE_SysExitEvent SysExitEvent
#endif
TEST(CpuReaderTest, MAYBE_SysExitEvent) {
BinaryWriter writer;
ProtoTranslationTable* table = GetTable("synthetic");
FtraceDataSourceConfig ds_config = EmptyConfig();
const auto syscalls = SyscallTable::FromCurrentArch();
const auto kSysExitId = static_cast<uint16_t>(
table->EventToFtraceId(GroupAndName("raw_syscalls", "sys_exit")));
ASSERT_GT(kSysExitId, 0ul);
constexpr pid_t kPid = 23;
constexpr int64_t kFd = 2;
ds_config.syscalls_returning_fd =
FtraceConfigMuxer::GetSyscallsReturningFds(syscalls);
ASSERT_FALSE(ds_config.syscalls_returning_fd.empty());
const auto syscall_id = *ds_config.syscalls_returning_fd.begin();
writer.Write<int32_t>(1001); // Common field.
writer.Write<int32_t>(kPid); // Common pid
writer.Write<int64_t>(syscall_id); // id
writer.Write<int64_t>(kFd); // ret
auto input = writer.GetCopy();
auto length = writer.written();
BundleProvider bundle_provider(base::GetSysPageSize());
FtraceMetadata metadata{};
ASSERT_TRUE(CpuReader::ParseEvent(
kSysExitId, input.get(), input.get() + length, table, &ds_config,
bundle_provider.writer()->add_event(), &metadata));
std::unique_ptr<protos::gen::FtraceEventBundle> a =
bundle_provider.ParseProto();
ASSERT_NE(a, nullptr);
ASSERT_EQ(a->event().size(), 1u);
const auto& event = a->event()[0].sys_exit();
EXPECT_EQ(event.id(), syscall_id);
EXPECT_EQ(event.ret(), kFd);
EXPECT_THAT(metadata.fds, Contains(std::make_pair(kPid, kFd)));
}
TEST(CpuReaderTest, TaskRenameEvent) {
BundleProvider bundle_provider(base::GetSysPageSize());
BinaryWriter writer;
ProtoTranslationTable* table = GetTable("android_seed_N2F62_3.10.49");
FtraceDataSourceConfig ds_config = EmptyConfig();
constexpr uint32_t kTaskRenameId = 19;
writer.Write<int32_t>(1001); // Common field.
writer.Write<int32_t>(9999); // Common pid
writer.Write<int32_t>(9999); // Pid
writer.WriteFixedString(16, "Hello"); // Old Comm
writer.WriteFixedString(16, "Goodbye"); // New Comm
writer.Write<uint64_t>(10); // flags
writer.Write<int16_t>(10); // oom_score_adj
auto input = writer.GetCopy();
auto length = writer.written();
FtraceMetadata metadata{};
ASSERT_TRUE(CpuReader::ParseEvent(kTaskRenameId, input.get(),
input.get() + length, table, &ds_config,
bundle_provider.writer(), &metadata));
EXPECT_THAT(metadata.rename_pids, Contains(9999));
EXPECT_THAT(metadata.pids, Contains(9999));
}
// Regression test for b/205763418: Kernels without f0a515780393("tracing: Don't
// make assumptions about length of string on task rename") can output non
// zero-terminated strings in some cases. Even though it's a kernel bug, there's
// no point in rejecting that.
TEST(CpuReaderTest, EventNonZeroTerminated) {
BundleProvider bundle_provider(base::GetSysPageSize());
BinaryWriter writer;
ProtoTranslationTable* table = GetTable("android_seed_N2F62_3.10.49");
FtraceDataSourceConfig ds_config = EmptyConfig();
constexpr uint32_t kTaskRenameId = 19;
writer.Write<int32_t>(1001); // Common field.
writer.Write<int32_t>(9999); // Common pid
writer.Write<int32_t>(9999); // Pid
writer.WriteFixedString(16, "Hello"); // Old Comm
std::array<char, 16> newcomm;
memcpy(&newcomm, "0123456789abcdef", sizeof newcomm);
writer.Write(newcomm); // New Comm - not null terminated
writer.Write<uint64_t>(10); // flags
writer.Write<int16_t>(10); // oom_score_adj
auto input = writer.GetCopy();
auto length = writer.written();
FtraceMetadata metadata{};
ASSERT_TRUE(CpuReader::ParseEvent(
kTaskRenameId, input.get(), input.get() + length, table, &ds_config,
bundle_provider.writer()->add_event(), &metadata));
std::unique_ptr<protos::gen::FtraceEventBundle> a =
bundle_provider.ParseProto();
ASSERT_NE(a, nullptr);
ASSERT_EQ(a->event().size(), 1u);
ASSERT_EQ(a->event()[0].task_rename().newcomm(), "0123456789abcdef");
}
// Page with a single sched_switch, no data loss.
static char g_switch_page[] =
R"(
00000000: 2b16 c3be 90b6 0300 4c00 0000 0000 0000 ................
00000010: 1e00 0000 0000 0000 1000 0000 2f00 0103 ................
00000020: 0300 0000 6b73 6f66 7469 7271 642f 3000 ................
00000030: 0000 0000 0300 0000 7800 0000 0100 0000 ................
00000040: 0000 0000 736c 6565 7000 722f 3000 0000 ................
00000050: 0000 0000 950e 0000 7800 0000 0000 0000 ................
)";
// Page with a single sched_switch, header has data loss flag set.
static char g_switch_page_lost_events[] =
R"(
00000000: 2b16 c3be 90b6 0300 4c00 0080 ffff ffff ................
00000010: 1e00 0000 0000 0000 1000 0000 2f00 0103 ................
00000020: 0300 0000 6b73 6f66 7469 7271 642f 3000 ................
00000030: 0000 0000 0300 0000 7800 0000 0100 0000 ................
00000040: 0000 0000 736c 6565 7000 722f 3000 0000 ................
00000050: 0000 0000 950e 0000 7800 0000 0000 0000 ................
)";
// Page with invalid data.
static char g_invalid_page[] =
R"(
00000000: 2b16 c3be 90b6 0300 4b00 0000 0000 0000 ................
00000010: 1e00 0000 0000 0000 1000 0000 2f00 0103 ................
00000020: 0300 0000 6b73 6f66 7469 7271 642f 3000 ................
00000030: 0000 0000 0300 0000 7800 0000 0100 0000 ................
00000040: 0000 0000 736c 6565 7000 722f 3000 0000 ................
00000050: 0000 0000 950e 0000 7800 0000 0000 0000 ................
)";
TEST(CpuReaderTest, NewPacketOnLostEvents) {
auto page_ok = PageFromXxd(g_switch_page);
auto page_loss = PageFromXxd(g_switch_page_lost_events);
std::vector<const void*> test_page_order = {
page_ok.get(), page_ok.get(), page_ok.get(), page_loss.get(),
page_loss.get(), page_ok.get(), page_ok.get(), page_ok.get()};
// Prepare a buffer with 8 contiguous pages, with the above contents.
static constexpr size_t kTestPages = 8;
std::unique_ptr<uint8_t[]> buf(
new uint8_t[base::GetSysPageSize() * kTestPages]());
for (size_t i = 0; i < kTestPages; i++) {
void* dest = buf.get() + (i * base::GetSysPageSize());
memcpy(dest, static_cast<const void*>(test_page_order[i]),
base::GetSysPageSize());
}
ProtoTranslationTable* table = GetTable("synthetic");
FtraceMetadata metadata{};
FtraceDataSourceConfig ds_config = EmptyConfig();
ds_config.event_filter.AddEnabledEvent(
table->EventToFtraceId(GroupAndName("sched", "sched_switch")));
TraceWriterForTesting trace_writer;
auto compact_sched_buf = std::make_unique<CompactSchedBuffer>();
base::FlatSet<protos::pbzero::FtraceParseStatus> parse_errors;
uint64_t last_read_event_ts = 0;
bool success = CpuReader::ProcessPagesForDataSource(
&trace_writer, &metadata, /*cpu=*/1, &ds_config, &parse_errors,
&last_read_event_ts, buf.get(), kTestPages, compact_sched_buf.get(),
table, /*symbolizer=*/nullptr,
/*ftrace_clock_snapshot=*/nullptr,
protos::pbzero::FTRACE_CLOCK_UNSPECIFIED);
EXPECT_TRUE(success);
// Each packet should contain the parsed contents of a contiguous run of pages
// without data loss.
// So we should get three packets (each page has 1 event):
// [3 events] [1 event] [4 events].
auto packets = trace_writer.GetAllTracePackets();
ASSERT_EQ(3u, packets.size());
EXPECT_FALSE(packets[0].ftrace_events().lost_events());
EXPECT_EQ(3u, packets[0].ftrace_events().event().size());
EXPECT_TRUE(packets[1].ftrace_events().lost_events());
EXPECT_EQ(1u, packets[1].ftrace_events().event().size());
EXPECT_TRUE(packets[2].ftrace_events().lost_events());
EXPECT_EQ(4u, packets[2].ftrace_events().event().size());
}
TEST(CpuReaderTest, ProcessPagesForDataSourceError) {
auto page_ok = PageFromXxd(g_switch_page);
auto page_err = PageFromXxd(g_invalid_page);
std::vector<const void*> test_page_order = {
page_ok.get(), page_ok.get(), page_ok.get(), page_err.get(),
page_ok.get(), page_ok.get(), page_err.get(), page_ok.get()};
// Prepare a buffer with 8 contiguous pages, with the above contents.
static constexpr size_t kTestPages = 8;
std::unique_ptr<uint8_t[]> buf(
new uint8_t[base::GetSysPageSize() * kTestPages]());
for (size_t i = 0; i < kTestPages; i++) {
void* dest = buf.get() + (i * base::GetSysPageSize());
memcpy(dest, static_cast<const void*>(test_page_order[i]),
base::GetSysPageSize());
}
ProtoTranslationTable* table = GetTable("synthetic");
FtraceMetadata metadata{};
FtraceDataSourceConfig ds_config = EmptyConfig();
ds_config.event_filter.AddEnabledEvent(
table->EventToFtraceId(GroupAndName("sched", "sched_switch")));
TraceWriterForTesting trace_writer;
auto compact_sched_buf = std::make_unique<CompactSchedBuffer>();
base::FlatSet<protos::pbzero::FtraceParseStatus> parse_errors;
uint64_t last_read_event_ts = 0;
bool success = CpuReader::ProcessPagesForDataSource(
&trace_writer, &metadata, /*cpu=*/1, &ds_config, &parse_errors,
&last_read_event_ts, buf.get(), kTestPages, compact_sched_buf.get(),
table, /*symbolizer=*/nullptr,
/*ftrace_clock_snapshot=*/nullptr,
protos::pbzero::FTRACE_CLOCK_UNSPECIFIED);
EXPECT_FALSE(success);
EXPECT_EQ(
parse_errors.count(FtraceParseStatus::FTRACE_STATUS_ABI_END_OVERFLOW),
1u);
// 2 invalid pages -> 2 serialised parsing errors
std::vector<protos::gen::TracePacket> packets =
trace_writer.GetAllTracePackets();
ASSERT_EQ(packets.size(), 1u);
protos::gen::FtraceEventBundle bundle = packets[0].ftrace_events();
using Bundle = protos::gen::FtraceEventBundle;
using Error = Bundle::FtraceError;
using protos::gen::FtraceParseStatus::FTRACE_STATUS_ABI_END_OVERFLOW;
EXPECT_THAT(
bundle,
Property(&Bundle::error,
ElementsAre(
Property(&Error::status, FTRACE_STATUS_ABI_END_OVERFLOW),
Property(&Error::status, FTRACE_STATUS_ABI_END_OVERFLOW))));
}
// Page containing an absolute timestamp (RINGBUF_TYPE_TIME_STAMP).
static char g_abs_timestamp[] =
R"(
00000000: 8949 fbfb 38e4 0400 6407 0000 0000 0000 .I..8...d.......
00000010: 5032 0a2d 3b01 0100 0000 0000 7377 6170 P2.-;.......swap
00000020: 7065 722f 3000 0000 0000 0000 0000 0000 per/0...........
00000030: 7800 0000 0000 0000 0000 0000 6776 6673 x...........gvfs
00000040: 2d61 6663 2d76 6f6c 756d 6500 6483 0000 -afc-volume.d...
00000050: 7800 0000 f0de 1700 3b01 0100 6483 0000 x.......;...d...
00000060: 6776 6673 2d61 6663 2d76 6f6c 756d 6500 gvfs-afc-volume.
00000070: 6483 0000 7800 0000 0100 0000 0000 0000 d...x...........
00000080: 7377 6170 7065 722f 3000 0000 0000 0000 swapper/0.......
00000090: 0000 0000 7800 0000 aaa1 5c08 0401 1100 ....x.....\.....
000000a0: 0000 0000 88fc 31eb 029f ffff 609e d3c0 ......1.....`...
000000b0: ffff ffff 0076 b4a1 029f ffff 0020 0000 .....v....... ..
000000c0: ffff ffff e477 1700 0301 1100 0000 0000 .....w..........
000000d0: 88fc 31eb 029f ffff aa26 0100 3e01 1100 ..1......&..>...
000000e0: 0000 0000 6b77 6f72 6b65 722f 7538 3a35 ....kworker/u8:5
000000f0: 0000 0000 24c0 0c00 7800 0000 0100 0000 ....$...x.......
00000100: 0300 0000 90e6 e700 3b01 0100 0000 0000 ........;.......
00000110: 7377 6170 7065 722f 3000 0000 0000 0000 swapper/0.......
00000120: 0000 0000 7800 0000 0000 0000 0000 0000 ....x...........
00000130: 6b77 6f72 6b65 722f 7538 3a35 0000 0000 kworker/u8:5....
00000140: 24c0 0c00 7800 0000 aa56 0300 3e01 0100 $...x....V..>...
00000150: 24c0 0c00 6b77 6f72 6b65 722f 7538 3a31 $...kworker/u8:1
00000160: 0000 0000 8eb5 0c00 7800 0000 0100 0000 ........x.......
00000170: 0300 0000 06eb 0300 0201 0000 24c0 0c00 ............$...
00000180: 6026 f22a 049f ffff f0e4 4cc0 ffff ffff `&.*......L.....
00000190: ca45 0f00 3e01 0100 24c0 0c00 646d 6372 .E..>...$...dmcr
000001a0: 7970 745f 7772 6974 652f 3200 2601 0000 ypt_write/2.&...
000001b0: 7800 0000 0100 0000 0100 0000 c617 0200 x...............
000001c0: 0101 0000 24c0 0c00 6026 f22a 049f ffff ....$...`&.*....
000001d0: f0e4 4cc0 ffff ffff a47c 0000 0301 0100 ..L......|......
000001e0: 24c0 0c00 6015 f22a 049f ffff 0685 0000 $...`..*........
000001f0: 0201 0000 24c0 0c00 a05d f22a 049f ffff ....$....].*....
00000200: f0e4 4cc0 ffff ffff c6dd 0800 0101 0000 ..L.............
00000210: 24c0 0c00 a05d f22a 049f ffff f0e4 4cc0 $....].*......L.
00000220: ffff ffff 8444 0000 0301 0100 24c0 0c00 .....D......$...
00000230: 6059 f22a 049f ffff e672 0000 0201 0000 `Y.*.....r......
00000240: 24c0 0c00 e050 f22a 049f ffff f0e4 4cc0 $....P.*......L.
00000250: ffff ffff 4673 0a00 0101 0000 24c0 0c00 ....Fs......$...
00000260: e050 f22a 049f ffff f0e4 4cc0 ffff ffff .P.*......L.....
00000270: 04ca 0000 0301 0100 24c0 0c00 2000 f22a ........$... ..*
00000280: 049f ffff 86b1 0000 0201 0000 24c0 0c00 ............$...
00000290: 6015 f22a 049f ffff f0e4 4cc0 ffff ffff `..*......L.....
000002a0: e640 0c00 0101 0000 24c0 0c00 6015 f22a .@......$...`..*
000002b0: 049f ffff f0e4 4cc0 ffff ffff 64b4 0000 ......L.....d...
000002c0: 0301 0100 24c0 0c00 2011 f22a 049f ffff ....$... ..*....
000002d0: 66b9 0000 0201 0000 24c0 0c00 a06e f22a f.......$....n.*
000002e0: 049f ffff f0e4 4cc0 ffff ffff 6ae1 4200 ......L.....j.B.
000002f0: 3e01 1100 24c0 0c00 6a62 6432 2f64 6d2d >...$...jbd2/dm-
00000300: 312d 3800 0000 0000 6a01 0000 7800 0000 1-8.....j...x...
00000310: 0100 0000 0300 0000 269b 0400 0101 0000 ........&.......
00000320: 24c0 0c00 a06e f22a 049f ffff f0e4 4cc0 $....n.*......L.
00000330: ffff ffff ff9d 6fb6 1f87 9c00 1000 0000 ......o.........
00000340: 3b01 0100 24c0 0c00 6b77 6f72 6b65 722f ;...$...kworker/
00000350: 7538 3a35 0000 0000 24c0 0c00 7800 0000 u8:5....$...x...
00000360: 8000 0000 0000 0000 7377 6170 7065 722f ........swapper/
00000370: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
00000380: 6ad2 3802 0401 1100 0000 0000 c800 384b j.8...........8K
00000390: 029f ffff 7018 75c0 ffff ffff 00ac edce ....p.u.........
000003a0: 039f ffff 0020 0000 0000 0000 c4de 0000 ..... ..........
000003b0: 0301 1100 0000 0000 c800 384b 029f ffff ..........8K....
000003c0: 8a27 0100 3e01 1100 0000 0000 6b77 6f72 .'..>.......kwor
000003d0: 6b65 722f 303a 3200 0000 0000 48b4 0c00 ker/0:2.....H...
000003e0: 7800 0000 0100 0000 0000 0000 706d 0800 x...........pm..
000003f0: 3b01 0100 0000 0000 7377 6170 7065 722f ;.......swapper/
00000400: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
00000410: 0000 0000 0000 0000 6b77 6f72 6b65 722f ........kworker/
00000420: 303a 3200 0000 0000 48b4 0c00 7800 0000 0:2.....H...x...
00000430: 4636 0200 0201 0000 48b4 0c00 c800 384b F6......H.....8K
00000440: 029f ffff 7018 75c0 ffff ffff ca56 0500 ....p.u......V..
00000450: 0401 0100 48b4 0c00 606a ad55 029f ffff ....H...`j.U....
00000460: f0e4 4cc0 ffff ffff 002c 04d0 039f ffff ..L......,......
00000470: 0020 0000 ffff ffff e435 0000 0301 0100 . .......5......
00000480: 48b4 0c00 606a ad55 029f ffff ca67 0000 H...`j.U.....g..
00000490: 3e01 0100 48b4 0c00 6b77 6f72 6b65 722f >...H...kworker/
000004a0: 7538 3a35 0000 0000 24c0 0c00 7800 0000 u8:5....$...x...
000004b0: 0100 0000 0000 0000 e6fc 0200 0101 0000 ................
000004c0: 48b4 0c00 c800 384b 029f ffff 7018 75c0 H.....8K....p.u.
000004d0: ffff ffff 708f 0200 3b01 0100 48b4 0c00 ....p...;...H...
000004e0: 6b77 6f72 6b65 722f 303a 3200 0000 0000 kworker/0:2.....
000004f0: 48b4 0c00 7800 0000 8000 0000 0000 0000 H...x...........
00000500: 6b77 6f72 6b65 722f 7538 3a35 0000 0000 kworker/u8:5....
00000510: 24c0 0c00 7800 0000 0614 0100 0201 0000 $...x...........
00000520: 24c0 0c00 606a ad55 029f ffff f0e4 4cc0 $...`j.U......L.
00000530: ffff ffff ea7e 0c00 3e01 0100 24c0 0c00 .....~..>...$...
00000540: 646d 6372 7970 745f 7772 6974 652f 3200 dmcrypt_write/2.
00000550: 2601 0000 7800 0000 0100 0000 0100 0000 &...x...........
00000560: 4645 0200 0101 0000 24c0 0c00 606a ad55 FE......$...`j.U
00000570: 029f ffff f0e4 4cc0 ffff ffff b043 0900 ......L......C..
00000580: 3b01 0100 24c0 0c00 6b77 6f72 6b65 722f ;...$...kworker/
00000590: 7538 3a35 0000 0000 24c0 0c00 7800 0000 u8:5....$...x...
000005a0: 8000 0000 0000 0000 7377 6170 7065 722f ........swapper/
000005b0: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
000005c0: ca7a 3900 0401 1100 0000 0000 48bc d5a1 .z9.........H...
000005d0: 029f ffff 10e2 62bb ffff ffff 00e0 40d0 ......b.......@.
000005e0: 039f ffff 0020 0000 0000 0000 c4bb 0000 ..... ..........
000005f0: 0301 1100 0000 0000 48bc d5a1 029f ffff ........H.......
00000600: 2aea 0000 3e01 1100 0000 0000 6b77 6f72 *...>.......kwor
00000610: 6b65 722f 303a 3148 0000 0000 cfc1 0c00 ker/0:1H........
00000620: 6400 0000 0100 0000 0000 0000 90bb 0600 d...............
00000630: 3b01 0100 0000 0000 7377 6170 7065 722f ;.......swapper/
00000640: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
00000650: 0000 0000 0000 0000 6b77 6f72 6b65 722f ........kworker/
00000660: 303a 3148 0000 0000 cfc1 0c00 6400 0000 0:1H........d...
00000670: 8617 0200 0201 0000 cfc1 0c00 48bc d5a1 ............H...
00000680: 029f ffff 10e2 62bb ffff ffff c68f 0400 ......b.........
00000690: 0101 0000 cfc1 0c00 48bc d5a1 029f ffff ........H.......
000006a0: 10e2 62bb ffff ffff b063 0300 3b01 0100 ..b......c..;...
000006b0: cfc1 0c00 6b77 6f72 6b65 722f 303a 3148 ....kworker/0:1H
000006c0: 0000 0000 cfc1 0c00 6400 0000 8000 0000 ........d.......
000006d0: 0000 0000 7377 6170 7065 722f 3000 0000 ....swapper/0...
000006e0: 0000 0000 0000 0000 7800 0000 4a10 ad01 ........x...J...
000006f0: 3e01 1100 0000 0000 6a62 6432 2f64 6d2d >.......jbd2/dm-
00000700: 312d 3800 0000 0000 6a01 0000 7800 0000 1-8.....j...x...
00000710: 0100 0000 0300 0000 ea27 b900 3e01 1100 .........'..>...
00000720: 0000 0000 7263 755f 7363 6865 6400 0000 ....rcu_sched...
00000730: 0000 0000 0d00 0000 7800 0000 0100 0000 ........x.......
00000740: 0200 0000 3d00 0000 2c00 0000 0000 0000 ....=...,.......
00000750: 0000 0000 0000 0000 0000 0000 0000 0000 ................
00000760: 0000 0000 0000 0000 0000 0000 0000 0000 ................
00000770: 0000 0000 0000 0000 0000 0000 0000 0000 ................
)";
TEST_F(CpuReaderParsePagePayloadTest, ParseAbsoluteTimestamp) {
auto page = PageFromXxd(g_abs_timestamp);
// Hand-build a translation table that handles sched_switch for this test
// page. We cannot reuse the test data format file, since the ftrace id for
// sched_switch in this page is different.
std::vector<Field> common_fields;
{ // common_pid
common_fields.emplace_back(Field{});
Field* field = &common_fields.back();
field->ftrace_offset = 4;
field->ftrace_size = 4;
field->ftrace_type = kFtraceCommonPid32;
field->proto_field_id = 2;
field->proto_field_type = ProtoSchemaType::kInt32;
SetTranslationStrategy(field->ftrace_type, field->proto_field_type,
&field->strategy);
}
using Switch = protos::gen::SchedSwitchFtraceEvent;
Event sched_switch_event{
"sched_switch",
"sched",
{
{8, 16, FtraceFieldType::kFtraceFixedCString, "prev_comm",
Switch::kPrevCommFieldNumber, ProtoSchemaType::kString,
TranslationStrategy::kInvalidTranslationStrategy},
{24, 4, FtraceFieldType::kFtracePid32, "prev_pid",
Switch::kPrevPidFieldNumber, ProtoSchemaType::kInt32,
TranslationStrategy::kInvalidTranslationStrategy},
{28, 4, FtraceFieldType::kFtraceInt32, "prev_prio",
Switch::kPrevPrioFieldNumber, ProtoSchemaType::kInt32,
TranslationStrategy::kInvalidTranslationStrategy},
{32, 8, FtraceFieldType::kFtraceInt64, "prev_state",
Switch::kPrevStateFieldNumber, ProtoSchemaType::kInt64,
TranslationStrategy::kInvalidTranslationStrategy},
{40, 16, FtraceFieldType::kFtraceFixedCString, "next_comm",
Switch::kNextCommFieldNumber, ProtoSchemaType::kString,
TranslationStrategy::kInvalidTranslationStrategy},
{56, 4, FtraceFieldType::kFtracePid32, "next_pid",
Switch::kNextPidFieldNumber, ProtoSchemaType::kInt32,
TranslationStrategy::kInvalidTranslationStrategy},
{60, 4, FtraceFieldType::kFtraceInt32, "next_prio",
Switch::kNextPrioFieldNumber, ProtoSchemaType::kInt32,
TranslationStrategy::kInvalidTranslationStrategy},
},
/*ftrace_event_id=*/315,
/*proto_field_id=*/4,
/*size=*/64};
for (Field& field : sched_switch_event.fields) {
SetTranslationStrategy(field.ftrace_type, field.proto_field_type,
&field.strategy);
}
std::vector<Event> events;
events.emplace_back(std::move(sched_switch_event));
NiceMock<MockFtraceProcfs> mock_ftrace;
PrintkMap printk_formats;
ProtoTranslationTable translation_table(
&mock_ftrace, events, std::move(common_fields),
ProtoTranslationTable::DefaultPageHeaderSpecForTesting(),
InvalidCompactSchedEventFormatForTesting(), printk_formats);
ProtoTranslationTable* table = &translation_table;
FtraceDataSourceConfig ds_config = EmptyConfig();
ds_config.event_filter.AddEnabledEvent(
table->EventToFtraceId(GroupAndName("sched", "sched_switch")));
const uint8_t* parse_pos = page.get();
std::optional<CpuReader::PageHeader> page_header =
CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
const uint8_t* page_end = page.get() + base::GetSysPageSize();
ASSERT_TRUE(page_header.has_value());
EXPECT_FALSE(page_header->lost_events);
EXPECT_LE(parse_pos + page_header->size, page_end);
FtraceParseStatus status = CpuReader::ParsePagePayload(
parse_pos, &page_header.value(), table, &ds_config,
CreateBundler(ds_config), &metadata_, &last_read_event_ts_);
EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_OK);
auto bundle = GetBundle();
// There should be 9 sched_switch events within the above page.
// We assert that all of their timestamps are exactly as expected.
//
// The key record that we're testing is an absolute timestamp
// (RINGBUF_TYPE_TIME_STAMP) between the 3rd and 4th sched_switch events.
//
// This timestamp record starts at 0x334 bytes into the page.
// The event header (first 4 bytes): 0xb66f9dff
// -> type (bottom 5 bits): 31 (RINGBUF_TYPE_TIME_STAMP)
// -> bottom 27 bits of ts: 0x5b37cef
// Next 4 bytes have the top bits (28..59) of ts.
// -> post-shift: 0x4e438f8000000
// Adding the two parts of the timestamp, we get: 1376833332542703.
//
// The next event (sched_switch at 0x33c) after this timestamp has a
// delta-timestamp of 0 in its event header, so we expect the 4th
// sched_switch to have a timestamp of exactly 1376833332542703.
EXPECT_EQ(bundle.event().size(), 9u);
std::vector<uint64_t> switch_timestamps;
for (const auto& e : bundle.event())
switch_timestamps.push_back(e.timestamp());
uint64_t expected_timestamps[] = {
1376833327307547ull, 1376833327356434ull, 1376833332265799ull,
1376833332542703ull, 1376833333729055ull, 1376833333757142ull,
1376833333808564ull, 1376833333943445ull, 1376833333964012ull};
ASSERT_THAT(switch_timestamps,
testing::ElementsAreArray(expected_timestamps));
}
TEST(CpuReaderTest, TranslateBlockDeviceIDToUserspace) {
const uint32_t kKernelBlockDeviceId = 271581216;
const BlockDeviceID kUserspaceBlockDeviceId = 66336;
const uint64_t k64BitKernelBlockDeviceId = 4442450946;
const BlockDeviceID k64BitUserspaceBlockDeviceId =
static_cast<BlockDeviceID>(17594983681026ULL);
EXPECT_EQ(CpuReader::TranslateBlockDeviceIDToUserspace<uint32_t>(
kKernelBlockDeviceId),
kUserspaceBlockDeviceId);
EXPECT_EQ(CpuReader::TranslateBlockDeviceIDToUserspace<uint64_t>(
k64BitKernelBlockDeviceId),
k64BitUserspaceBlockDeviceId);
}
// clang-format off
// # tracer: nop
// #
// # entries-in-buffer/entries-written: 1041/238740 #P:8
// #
// # _-----=> irqs-off
// # / _----=> need-resched
// # | / _---=> hardirq/softirq
// # || / _--=> preempt-depth
// # ||| / delay
// # TASK-PID CPU# |||| TIMESTAMP FUNCTION
// # | | | |||| | |
// android.bg-1668 [000] ...1 174991.234105: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
// android.bg-1668 [000] ...1 174991.234108: ext4_mark_inode_dirty: dev 259,32 ino 2883605 caller ext4_dirty_inode+0x48/0x68
// android.bg-1668 [000] ...1 174991.234118: ext4_da_write_begin: dev 259,32 ino 2883605 pos 20480 len 4096 flags 0
// android.bg-1668 [000] ...1 174991.234126: ext4_journal_start: dev 259,32 blocks, 1 rsv_blocks, 0 caller ext4_da_write_begin+0x3d4/0x518
// android.bg-1668 [000] ...1 174991.234133: ext4_es_lookup_extent_enter: dev 259,32 ino 2883605 lblk 5
// android.bg-1668 [000] ...1 174991.234135: ext4_es_lookup_extent_exit: dev 259,32 ino 2883605 found 1 [5/4294967290) 576460752303423487 H0x10
// android.bg-1668 [000] ...2 174991.234140: ext4_da_reserve_space: dev 259,32 ino 2883605 mode 0100600 i_blocks 8 reserved_data_blocks 6 reserved_meta_blocks 0
// android.bg-1668 [000] ...1 174991.234142: ext4_es_insert_extent: dev 259,32 ino 2883605 es [5/1) mapped 576460752303423487 status D
// android.bg-1668 [000] ...1 174991.234153: ext4_da_write_end: dev 259,32 ino 2883605 pos 20480 len 4096 copied 4096
// android.bg-1668 [000] ...1 174991.234158: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
// android.bg-1668 [000] ...1 174991.234160: ext4_mark_inode_dirty: dev 259,32 ino 2883605 caller ext4_dirty_inode+0x48/0x68
// android.bg-1668 [000] ...1 174991.234170: ext4_da_write_begin: dev 259,32 ino 2883605 pos 24576 len 2968 flags 0
// android.bg-1668 [000] ...1 174991.234178: ext4_journal_start: dev 259,32 blocks, 1 rsv_blocks, 0 caller ext4_da_write_begin+0x3d4/0x518
// android.bg-1668 [000] ...1 174991.234184: ext4_es_lookup_extent_enter: dev 259,32 ino 2883605 lblk 6
// android.bg-1668 [000] ...1 174991.234187: ext4_es_lookup_extent_exit: dev 259,32 ino 2883605 found 1 [6/4294967289) 576460752303423487 H0x10
// android.bg-1668 [000] ...2 174991.234191: ext4_da_reserve_space: dev 259,32 ino 2883605 mode 0100600 i_blocks 8 reserved_data_blocks 7 reserved_meta_blocks 0
// android.bg-1668 [000] ...1 174991.234193: ext4_es_insert_extent: dev 259,32 ino 2883605 es [6/1) mapped 576460752303423487 status D
// android.bg-1668 [000] ...1 174991.234203: ext4_da_write_end: dev 259,32 ino 2883605 pos 24576 len 2968 copied 2968
// android.bg-1668 [000] ...1 174991.234209: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
// android.bg-1668 [000] ...1 174991.234211: ext4_mark_inode_dirty: dev 259,32 ino 2883605 caller ext4_dirty_inode+0x48/0x68
// android.bg-1668 [000] ...1 174991.234262: ext4_sync_file_enter: dev 259,32 ino 2883605 parent 2883592 datasync 0
// android.bg-1668 [000] ...1 174991.234270: ext4_writepages: dev 259,32 ino 2883605 nr_to_write 9223372036854775807 pages_skipped 0 range_start 0 range_end 9223372036854775807 sync_mode 1 for_kupdate 0 range_cyclic 0 writeback_index 0
// android.bg-1668 [000] ...1 174991.234287: ext4_journal_start: dev 259,32 blocks, 10 rsv_blocks, 0 caller ext4_writepages+0x6a4/0x119c
// android.bg-1668 [000] ...1 174991.234294: ext4_da_write_pages: dev 259,32 ino 2883605 first_page 0 nr_to_write 9223372036854775807 sync_mode 1
// android.bg-1668 [000] ...1 174991.234319: ext4_da_write_pages_extent: dev 259,32 ino 2883605 lblk 0 len 7 flags 0x200
// android.bg-1668 [000] ...1 174991.234322: ext4_es_lookup_extent_enter: dev 259,32 ino 2883605 lblk 0
// android.bg-1668 [000] ...1 174991.234324: ext4_es_lookup_extent_exit: dev 259,32 ino 2883605 found 1 [0/7) 576460752303423487 D0x10
// android.bg-1668 [000] ...1 174991.234328: ext4_ext_map_blocks_enter: dev 259,32 ino 2883605 lblk 0 len 7 flags CREATE|DELALLOC|METADATA_NOFAIL
// android.bg-1668 [000] ...1 174991.234341: ext4_request_blocks: dev 259,32 ino 2883605 flags HINT_DATA|DELALLOC_RESV|USE_RESV len 7 lblk 0 goal 11567104 lleft 0 lright 0 pleft 0 pright 0
// android.bg-1668 [000] ...1 174991.234394: ext4_mballoc_prealloc: dev 259,32 inode 2883605 orig 353/0/7@0 result 65/25551/7@0
// android.bg-1668 [000] ...1 174991.234400: ext4_allocate_blocks: dev 259,32 ino 2883605 flags HINT_DATA|DELALLOC_RESV|USE_RESV len 7 block 2155471 lblk 0 goal 11567104 lleft 0 lright 0 pleft 0 pright 0
// android.bg-1668 [000] ...1 174991.234409: ext4_mark_inode_dirty: dev 259,32 ino 2883605 caller __ext4_ext_dirty+0x104/0x170
// android.bg-1668 [000] ...1 174991.234420: ext4_get_reserved_cluster_alloc: dev 259,32 ino 2883605 lblk 0 len 7
// android.bg-1668 [000] ...2 174991.234426: ext4_da_update_reserve_space: dev 259,32 ino 2883605 mode 0100600 i_blocks 8 used_blocks 7 reserved_data_blocks 7 reserved_meta_blocks 0 allocated_meta_blocks 0 quota_claim 1
// android.bg-1668 [000] ...1 174991.234434: ext4_journal_start: dev 259,32 blocks, 1 rsv_blocks, 0 caller ext4_mark_dquot_dirty+0x80/0xd4
// android.bg-1668 [000] ...1 174991.234441: ext4_es_lookup_extent_enter: dev 259,32 ino 3 lblk 1
// android.bg-1668 [000] ...1 174991.234445: ext4_es_lookup_extent_exit: dev 259,32 ino 3 found 1 [0/2) 9255 W0x10
// android.bg-1668 [000] ...1 174991.234456: ext4_journal_start: dev 259,32 blocks, 1 rsv_blocks, 0 caller ext4_mark_dquot_dirty+0x80/0xd4
// android.bg-1668 [000] ...1 174991.234460: ext4_es_lookup_extent_enter: dev 259,32 ino 4 lblk 1
// android.bg-1668 [000] ...1 174991.234463: ext4_es_lookup_extent_exit: dev 259,32 ino 4 found 1 [0/2) 9257 W0x10
// android.bg-1668 [000] ...1 174991.234471: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
// android.bg-1668 [000] ...1 174991.234474: ext4_mark_inode_dirty: dev 259,32 ino 2883605 caller ext4_dirty_inode+0x48/0x68
// android.bg-1668 [000] ...1 174991.234481: ext4_ext_map_blocks_exit: dev 259,32 ino 2883605 flags CREATE|DELALLOC|METADATA_NOFAIL lblk 0 pblk 2155471 len 7 mflags NM ret 7
// android.bg-1668 [000] ...1 174991.234484: ext4_es_insert_extent: dev 259,32 ino 2883605 es [0/7) mapped 2155471 status W
// android.bg-1668 [000] ...1 174991.234547: ext4_mark_inode_dirty: dev 259,32 ino 2883605 caller ext4_writepages+0xdc0/0x119c
// android.bg-1668 [000] ...1 174991.234604: ext4_journal_start: dev 259,32 blocks, 10 rsv_blocks, 0 caller ext4_writepages+0x6a4/0x119c
// android.bg-1668 [000] ...1 174991.234609: ext4_da_write_pages: dev 259,32 ino 2883605 first_page 7 nr_to_write 9223372036854775800 sync_mode 1
// android.bg-1668 [000] ...1 174991.234876: ext4_writepages_result: dev 259,32 ino 2883605 ret 0 pages_written 7 pages_skipped 0 sync_mode 1 writeback_index 7
// Profile Saver-5504 [000] ...1 175002.711928: ext4_discard_preallocations: dev 259,32 ino 1311176
// Profile Saver-5504 [000] ...1 175002.714165: ext4_begin_ordered_truncate: dev 259,32 ino 1311176 new_size 0
// Profile Saver-5504 [000] ...1 175002.714172: ext4_journal_start: dev 259,32 blocks, 3 rsv_blocks, 0 caller ext4_setattr+0x5b4/0x788
// Profile Saver-5504 [000] ...1 175002.714218: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_setattr+0x65c/0x788
// Profile Saver-5504 [000] ...1 175002.714277: ext4_invalidatepage: dev 259,32 ino 1311176 page_index 0 offset 0 length 4096
// Profile Saver-5504 [000] ...1 175002.714281: ext4_releasepage: dev 259,32 ino 1311176 page_index 0
// Profile Saver-5504 [000] ...1 175002.714295: ext4_invalidatepage: dev 259,32 ino 1311176 page_index 1 offset 0 length 4096
// Profile Saver-5504 [000] ...1 175002.714296: ext4_releasepage: dev 259,32 ino 1311176 page_index 1
// Profile Saver-5504 [000] ...1 175002.714315: ext4_truncate_enter: dev 259,32 ino 1311176 blocks 24
// Profile Saver-5504 [000] ...1 175002.714318: ext4_journal_start: dev 259,32 blocks, 10 rsv_blocks, 0 caller ext4_truncate+0x258/0x4b8
// Profile Saver-5504 [000] ...1 175002.714322: ext4_discard_preallocations: dev 259,32 ino 1311176
// Profile Saver-5504 [000] ...1 175002.714324: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_ext_truncate+0x24/0xc8
// Profile Saver-5504 [000] ...1 175002.714328: ext4_es_remove_extent: dev 259,32 ino 1311176 es [0/4294967295)
// Profile Saver-5504 [000] ...1 175002.714335: ext4_journal_start: dev 259,32 blocks, 1 rsv_blocks, 0 caller ext4_ext_remove_space+0x60/0x1180
// Profile Saver-5504 [000] ...1 175002.714338: ext4_ext_remove_space: dev 259,32 ino 1311176 since 0 end 4294967294 depth 0
// Profile Saver-5504 [000] ...1 175002.714347: ext4_ext_rm_leaf: dev 259,32 ino 1311176 start_lblk 0 last_extent [0(5276994), 2]partial_cluster 0
// Profile Saver-5504 [000] ...1 175002.714351: ext4_remove_blocks: dev 259,32 ino 1311176 extent [0(5276994), 2]from 0 to 1 partial_cluster 0
// Profile Saver-5504 [000] ...1 175002.714354: ext4_free_blocks: dev 259,32 ino 1311176 mode 0100600 block 5276994 count 2 flags 1ST_CLUSTER
// Profile Saver-5504 [000] ...1 175002.714365: ext4_mballoc_free: dev 259,32 inode 1311176 extent 161/1346/2
// Profile Saver-5504 [000] ...1 175002.714382: ext4_journal_start: dev 259,32 blocks, 1 rsv_blocks, 0 caller ext4_mark_dquot_dirty+0x80/0xd4
// Profile Saver-5504 [000] ...1 175002.714391: ext4_es_lookup_extent_enter: dev 259,32 ino 3 lblk 4
// Profile Saver-5504 [000] ...1 175002.714394: ext4_es_lookup_extent_exit: dev 259,32 ino 3 found 1 [4/1) 557094 W0x10
// Profile Saver-5504 [000] ...1 175002.714402: ext4_journal_start: dev 259,32 blocks, 1 rsv_blocks, 0 caller ext4_mark_dquot_dirty+0x80/0xd4
// Profile Saver-5504 [000] ...1 175002.714404: ext4_es_lookup_extent_enter: dev 259,32 ino 4 lblk 8
// Profile Saver-5504 [000] ...1 175002.714406: ext4_es_lookup_extent_exit: dev 259,32 ino 4 found 1 [8/3) 7376914 W0x10
// Profile Saver-5504 [000] ...1 175002.714413: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
// Profile Saver-5504 [000] ...1 175002.714414: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
// Profile Saver-5504 [000] ...1 175002.714420: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller __ext4_ext_dirty+0x104/0x170
// Profile Saver-5504 [000] ...1 175002.714423: ext4_ext_remove_space_done: dev 259,32 ino 1311176 since 0 end 4294967294 depth 0 partial 0 remaining_entries 0
// Profile Saver-5504 [000] ...1 175002.714425: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller __ext4_ext_dirty+0x104/0x170
// Profile Saver-5504 [000] ...1 175002.714433: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_truncate+0x3c4/0x4b8
// Profile Saver-5504 [000] ...1 175002.714436: ext4_truncate_exit: dev 259,32 ino 1311176 blocks 8
// Profile Saver-5504 [000] ...1 175002.714437: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
// Profile Saver-5504 [000] ...1 175002.714438: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
// Profile Saver-5504 [000] ...1 175002.714462: ext4_da_write_begin: dev 259,32 ino 1311176 pos 0 len 4 flags 0
// Profile Saver-5504 [000] ...1 175002.714472: ext4_journal_start: dev 259,32 blocks, 1 rsv_blocks, 0 caller ext4_da_write_begin+0x3d4/0x518
// Profile Saver-5504 [000] ...1 175002.714477: ext4_es_lookup_extent_enter: dev 259,32 ino 1311176 lblk 0
// Profile Saver-5504 [000] ...1 175002.714477: ext4_es_lookup_extent_exit: dev 259,32 ino 1311176 found 0 [0/0) 0
// Profile Saver-5504 [000] ...1 175002.714480: ext4_ext_map_blocks_enter: dev 259,32 ino 1311176 lblk 0 len 1 flags
// Profile Saver-5504 [000] ...1 175002.714485: ext4_es_find_delayed_extent_range_enter: dev 259,32 ino 1311176 lblk 0
// Profile Saver-5504 [000] ...1 175002.714488: ext4_es_find_delayed_extent_range_exit: dev 259,32 ino 1311176 es [0/0) mapped 0 status
// Profile Saver-5504 [000] ...1 175002.714490: ext4_es_insert_extent: dev 259,32 ino 1311176 es [0/4294967295) mapped 576460752303423487 status H
// Profile Saver-5504 [000] ...1 175002.714495: ext4_ext_map_blocks_exit: dev 259,32 ino 1311176 flags lblk 0 pblk 4294967296 len 1 mflags ret 0
// Profile Saver-5504 [000] ...2 175002.714501: ext4_da_reserve_space: dev 259,32 ino 1311176 mode 0100600 i_blocks 8 reserved_data_blocks 1 reserved_meta_blocks 0
// Profile Saver-5504 [000] ...1 175002.714505: ext4_es_insert_extent: dev 259,32 ino 1311176 es [0/1) mapped 576460752303423487 status D
// Profile Saver-5504 [000] ...1 175002.714513: ext4_da_write_end: dev 259,32 ino 1311176 pos 0 len 4 copied 4
// Profile Saver-5504 [000] ...1 175002.714519: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
// Profile Saver-5504 [000] ...1 175002.714520: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
// Profile Saver-5504 [000] ...1 175002.714527: ext4_da_write_begin: dev 259,32 ino 1311176 pos 4 len 4 flags 0
// Profile Saver-5504 [000] ...1 175002.714529: ext4_journal_start: dev 259,32 blocks, 1 rsv_blocks, 0 caller ext4_da_write_begin+0x3d4/0x518
// Profile Saver-5504 [000] ...1 175002.714531: ext4_da_write_end: dev 259,32 ino 1311176 pos 4 len 4 copied 4
// Profile Saver-5504 [000] ...1 175002.714532: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
// Profile Saver-5504 [000] ...1 175002.714532: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
// Profile Saver-5504 [000] ...1 175002.715313: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
// Profile Saver-5504 [000] ...1 175002.715322: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
// Profile Saver-5504 [000] ...1 175002.723849: ext4_da_write_begin: dev 259,32 ino 1311176 pos 8 len 5 flags 0
// Profile Saver-5504 [000] ...1 175002.723862: ext4_journal_start: dev 259,32 blocks, 1 rsv_blocks, 0 caller ext4_da_write_begin+0x3d4/0x518
// Profile Saver-5504 [000] ...1 175002.723873: ext4_da_write_end: dev 259,32 ino 1311176 pos 8 len 5 copied 5
// Profile Saver-5504 [000] ...1 175002.723877: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
// Profile Saver-5504 [000] ...1 175002.723879: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
// Profile Saver-5504 [000] ...1 175002.726857: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
// Profile Saver-5504 [000] ...1 175002.726867: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
// Profile Saver-5504 [000] ...1 175002.726881: ext4_da_write_begin: dev 259,32 ino 1311176 pos 13 len 4 flags 0
// Profile Saver-5504 [000] ...1 175002.726883: ext4_journal_start: dev 259,32 blocks, 1 rsv_blocks, 0 caller ext4_da_write_begin+0x3d4/0x518
// Profile Saver-5504 [000] ...1 175002.726890: ext4_da_write_end: dev 259,32 ino 1311176 pos 13 len 4 copied 4
// Profile Saver-5504 [000] ...1 175002.726892: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
// Profile Saver-5504 [000] ...1 175002.726892: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
// Profile Saver-5504 [000] ...1 175002.726900: ext4_da_write_begin: dev 259,32 ino 1311176 pos 17 len 4079 flags 0
// Profile Saver-5504 [000] ...1 175002.726901: ext4_journal_start: dev 259,32 blocks, 1 rsv_blocks, 0 caller ext4_da_write_begin+0x3d4/0x518
// Profile Saver-5504 [000] ...1 175002.726904: ext4_da_write_end: dev 259,32 ino 1311176 pos 17 len 4079 copied 4079
// Profile Saver-5504 [000] ...1 175002.726905: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
// Profile Saver-5504 [000] ...1 175002.726906: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
// Profile Saver-5504 [000] ...1 175002.726908: ext4_da_write_begin: dev 259,32 ino 1311176 pos 4096 len 2780 flags 0
// Profile Saver-5504 [000] ...1 175002.726916: ext4_journal_start: dev 259,32 blocks, 1 rsv_blocks, 0 caller ext4_da_write_begin+0x3d4/0x518
// Profile Saver-5504 [000] ...1 175002.726921: ext4_es_lookup_extent_enter: dev 259,32 ino 1311176 lblk 1
// Profile Saver-5504 [000] ...1 175002.726924: ext4_es_lookup_extent_exit: dev 259,32 ino 1311176 found 1 [1/4294967294) 576460752303423487 H0x10
// Profile Saver-5504 [000] ...2 175002.726931: ext4_da_reserve_space: dev 259,32 ino 1311176 mode 0100600 i_blocks 8 reserved_data_blocks 2 reserved_meta_blocks 0
// Profile Saver-5504 [000] ...1 175002.726933: ext4_es_insert_extent: dev 259,32 ino 1311176 es [1/1) mapped 576460752303423487 status D
// Profile Saver-5504 [000] ...1 175002.726940: ext4_da_write_end: dev 259,32 ino 1311176 pos 4096 len 2780 copied 2780
// Profile Saver-5504 [000] ...1 175002.726941: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
// Profile Saver-5504 [000] ...1 175002.726942: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
// d.process.acor-27885 [000] ...1 175018.227675: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
// d.process.acor-27885 [000] ...1 175018.227699: ext4_mark_inode_dirty: dev 259,32 ino 3278189 caller ext4_dirty_inode+0x48/0x68
// d.process.acor-27885 [000] ...1 175018.227839: ext4_sync_file_enter: dev 259,32 ino 3278183 parent 3277001 datasync 1
// d.process.acor-27885 [000] ...1 175018.227847: ext4_writepages: dev 259,32 ino 3278183 nr_to_write 9223372036854775807 pages_skipped 0 range_start 0 range_end 9223372036854775807 sync_mode 1 for_kupdate 0 range_cyclic 0 writeback_index 2
// d.process.acor-27885 [000] ...1 175018.227852: ext4_writepages_result: dev 259,32 ino 3278183 ret 0 pages_written 0 pages_skipped 0 sync_mode 1 writeback_index 2
// clang-format on
static ExamplePage g_full_page_sched_switch{
"synthetic",
R"(
00000000: 31f2 7622 1a00 0000 b40f 0000 0000 0000 1.v"............
00000010: 1e00 0000 0000 0000 1000 0000 2f00 0103 ............/...
00000020: 140d 0000 4a69 7420 7468 7265 6164 2070 ....Jit thread p
00000030: 6f6f 6c00 140d 0000 8100 0000 0008 0000 ool.............
00000040: 0000 0000 4576 656e 7454 6872 6561 6400 ....EventThread.
00000050: 6572 0000 7002 0000 6100 0000 f057 0e00 er..p...a....W..
00000060: 2f00 0103 7002 0000 4576 656e 7454 6872 /...p...EventThr
00000070: 6561 6400 6572 0000 7002 0000 6100 0000 ead.er..p...a...
00000080: 0100 0000 0000 0000 4a69 7420 7468 7265 ........Jit thre
00000090: 6164 2070 6f6f 6c00 140d 0000 8100 0000 ad pool.........
000000a0: 50c2 0910 2f00 0103 140d 0000 4a69 7420 P.../.......Jit
000000b0: 7468 7265 6164 2070 6f6f 6c00 140d 0000 thread pool.....
000000c0: 8100 0000 0100 0000 0000 0000 7377 6170 ............swap
000000d0: 7065 722f 3000 0000 0000 0000 0000 0000 per/0...........
000000e0: 7800 0000 901a c80e 2f00 0103 0000 0000 x......./.......
000000f0: 7377 6170 7065 722f 3000 0000 0000 0000 swapper/0.......
00000100: 0000 0000 7800 0000 0000 0000 0000 0000 ....x...........
00000110: 4469 7370 5379 6e63 0069 6e67 6572 0000 DispSync.inger..
00000120: 6f02 0000 6100 0000 1064 1e00 2f00 0103 o...a....d../...
00000130: 6f02 0000 4469 7370 5379 6e63 0069 6e67 o...DispSync.ing
00000140: 6572 0000 6f02 0000 6100 0000 0100 0000 er..o...a.......
00000150: 0000 0000 7377 6170 7065 722f 3000 0000 ....swapper/0...
00000160: 0000 0000 0000 0000 7800 0000 9074 8600 ........x....t..
00000170: 2f00 0103 0000 0000 7377 6170 7065 722f /.......swapper/
00000180: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
00000190: 0000 0000 0000 0000 4576 656e 7454 6872 ........EventThr
000001a0: 6561 6400 6572 0000 7002 0000 6100 0000 ead.er..p...a...
000001b0: d071 0b00 2f00 0103 7002 0000 4576 656e .q../...p...Even
000001c0: 7454 6872 6561 6400 6572 0000 7002 0000 tThread.er..p...
000001d0: 6100 0000 0100 0000 0000 0000 7377 6170 a...........swap
000001e0: 7065 722f 3000 0000 0000 0000 0000 0000 per/0...........
000001f0: 7800 0000 10cd 4504 2f00 0103 0000 0000 x.....E./.......
00000200: 7377 6170 7065 722f 3000 0000 0000 0000 swapper/0.......
00000210: 0000 0000 7800 0000 0000 0000 0000 0000 ....x...........
00000220: 7375 676f 763a 3000 0000 0000 0000 0000 sugov:0.........
00000230: 3802 0000 3100 0000 30d6 1300 2f00 0103 8...1...0.../...
00000240: 3802 0000 7375 676f 763a 3000 0000 0000 8...sugov:0.....
00000250: 0000 0000 3802 0000 3100 0000 0100 0000 ....8...1.......
00000260: 0000 0000 7377 6170 7065 722f 3000 0000 ....swapper/0...
00000270: 0000 0000 0000 0000 7800 0000 3049 a202 ........x...0I..
00000280: 2f00 0103 0000 0000 7377 6170 7065 722f /.......swapper/
00000290: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
000002a0: 0000 0000 0000 0000 4469 7370 5379 6e63 ........DispSync
000002b0: 0069 6e67 6572 0000 6f02 0000 6100 0000 .inger..o...a...
000002c0: d07a 1000 2f00 0103 6f02 0000 4469 7370 .z../...o...Disp
000002d0: 5379 6e63 0069 6e67 6572 0000 6f02 0000 Sync.inger..o...
000002e0: 6100 0000 0100 0000 0000 0000 7377 6170 a...........swap
000002f0: 7065 722f 3000 0000 0000 0000 0000 0000 per/0...........
00000300: 7800 0000 d085 1100 2f00 0103 0000 0000 x......./.......
00000310: 7377 6170 7065 722f 3000 0000 0000 0000 swapper/0.......
00000320: 0000 0000 7800 0000 0000 0000 0000 0000 ....x...........
00000330: 7375 7266 6163 6566 6c69 6e67 6572 0000 surfaceflinger..
00000340: 4b02 0000 6200 0000 907a f000 2f00 0103 K...b....z../...
00000350: 4b02 0000 7375 7266 6163 6566 6c69 6e67 K...surfacefling
00000360: 6572 0000 4b02 0000 6200 0000 0100 0000 er..K...b.......
00000370: 0000 0000 7377 6170 7065 722f 3000 0000 ....swapper/0...
00000380: 0000 0000 0000 0000 7800 0000 305a 6400 ........x...0Zd.
00000390: 2f00 0103 0000 0000 7377 6170 7065 722f /.......swapper/
000003a0: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
000003b0: 0000 0000 0000 0000 6d64 7373 5f66 6230 ........mdss_fb0
000003c0: 0000 0000 0000 0000 5714 0000 5300 0000 ........W...S...
000003d0: 10b1 9e03 2f00 0103 5714 0000 6d64 7373 ..../...W...mdss
000003e0: 5f66 6230 0000 0000 0000 0000 5714 0000 _fb0........W...
000003f0: 5300 0000 0200 0000 0000 0000 6b73 6f66 S...........ksof
00000400: 7469 7271 642f 3000 0000 0000 0300 0000 tirqd/0.........
00000410: 7800 0000 90bb 9900 2f00 0103 0300 0000 x......./.......
00000420: 6b73 6f66 7469 7271 642f 3000 0000 0000 ksoftirqd/0.....
00000430: 0300 0000 7800 0000 0100 0000 0000 0000 ....x...........
00000440: 7377 6170 7065 722f 3000 0000 0000 0000 swapper/0.......
00000450: 0000 0000 7800 0000 701e 5305 2f00 0103 ....x...p.S./...
00000460: 0000 0000 7377 6170 7065 722f 3000 0000 ....swapper/0...
00000470: 0000 0000 0000 0000 7800 0000 0000 0000 ........x.......
00000480: 0000 0000 6b77 6f72 6b65 722f 7531 363a ....kworker/u16:
00000490: 3600 0000 6401 0000 7800 0000 90a1 2900 6...d...x.....).
000004a0: 2f00 0103 6401 0000 6b77 6f72 6b65 722f /...d...kworker/
000004b0: 7531 363a 3600 0000 6401 0000 7800 0000 u16:6...d...x...
000004c0: 0200 0000 0000 0000 7377 6170 7065 722f ........swapper/
000004d0: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
000004e0: b0e5 4f04 2f00 0103 0000 0000 7377 6170 ..O./.......swap
000004f0: 7065 722f 3000 0000 0000 0000 0000 0000 per/0...........
00000500: 7800 0000 0000 0000 0000 0000 4269 6e64 x...........Bind
00000510: 6572 3a32 3136 385f 3135 0000 e614 0000 er:2168_15......
00000520: 7800 0000 b0bd 7c00 2f00 0103 e614 0000 x.....|./.......
00000530: 4269 6e64 6572 3a32 3136 385f 3135 0000 Binder:2168_15..
00000540: e614 0000 7800 0000 0100 0000 0000 0000 ....x...........
00000550: 7377 6170 7065 722f 3000 0000 0000 0000 swapper/0.......
00000560: 0000 0000 7800 0000 d0bd 7e01 2f00 0103 ....x.....~./...
00000570: 0000 0000 7377 6170 7065 722f 3000 0000 ....swapper/0...
00000580: 0000 0000 0000 0000 7800 0000 0000 0000 ........x.......
00000590: 0000 0000 6b77 6f72 6b65 722f 7531 363a ....kworker/u16:
000005a0: 3900 0000 e204 0000 7800 0000 7016 0800 9.......x...p...
000005b0: 2f00 0103 e204 0000 6b77 6f72 6b65 722f /.......kworker/
000005c0: 7531 363a 3900 0000 e204 0000 7800 0000 u16:9.......x...
000005d0: 0100 0000 0000 0000 7377 6170 7065 722f ........swapper/
000005e0: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
000005f0: 1004 5200 2f00 0103 0000 0000 7377 6170 ..R./.......swap
00000600: 7065 722f 3000 0000 0000 0000 0000 0000 per/0...........
00000610: 7800 0000 0000 0000 0000 0000 6b77 6f72 x...........kwor
00000620: 6b65 722f 7531 363a 3900 0000 e204 0000 ker/u16:9.......
00000630: 7800 0000 d0db 0700 2f00 0103 e204 0000 x......./.......
00000640: 6b77 6f72 6b65 722f 7531 363a 3900 0000 kworker/u16:9...
00000650: e204 0000 7800 0000 0100 0000 0000 0000 ....x...........
00000660: 7377 6170 7065 722f 3000 0000 0000 0000 swapper/0.......
00000670: 0000 0000 7800 0000 b0a2 8c00 2f00 0103 ....x......./...
00000680: 0000 0000 7377 6170 7065 722f 3000 0000 ....swapper/0...
00000690: 0000 0000 0000 0000 7800 0000 0000 0000 ........x.......
000006a0: 0000 0000 6b77 6f72 6b65 722f 7531 363a ....kworker/u16:
000006b0: 3900 0000 e204 0000 7800 0000 d02b 0400 9.......x....+..
000006c0: 2f00 0103 e204 0000 6b77 6f72 6b65 722f /.......kworker/
000006d0: 7531 363a 3900 0000 e204 0000 7800 0000 u16:9.......x...
000006e0: 0100 0000 0000 0000 7377 6170 7065 722f ........swapper/
000006f0: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
00000700: d064 ef05 2f00 0103 0000 0000 7377 6170 .d../.......swap
00000710: 7065 722f 3000 0000 0000 0000 0000 0000 per/0...........
00000720: 7800 0000 0000 0000 0000 0000 4469 7370 x...........Disp
00000730: 5379 6e63 0069 6e67 6572 0000 6f02 0000 Sync.inger..o...
00000740: 6100 0000 f07d 1b00 2f00 0103 6f02 0000 a....}../...o...
00000750: 4469 7370 5379 6e63 0069 6e67 6572 0000 DispSync.inger..
00000760: 6f02 0000 6100 0000 0100 0000 0000 0000 o...a...........
00000770: 6b73 6f66 7469 7271 642f 3000 0000 0000 ksoftirqd/0.....
00000780: 0300 0000 7800 0000 304c 2000 2f00 0103 ....x...0L ./...
00000790: 0300 0000 6b73 6f66 7469 7271 642f 3000 ....ksoftirqd/0.
000007a0: 0000 0000 0300 0000 7800 0000 0100 0000 ........x.......
000007b0: 0000 0000 6465 7832 6f61 7400 3935 5f33 ....dex2oat.95_3
000007c0: 0000 0000 341f 0000 8200 0000 700b 0700 ....4.......p...
000007d0: 2f00 0103 341f 0000 6465 7832 6f61 7400 /...4...dex2oat.
000007e0: 3935 5f33 0000 0000 341f 0000 8200 0000 95_3....4.......
000007f0: 0000 0000 0000 0000 7375 676f 763a 3000 ........sugov:0.
00000800: 0000 0000 0000 0000 3802 0000 3100 0000 ........8...1...
00000810: 50b0 0600 2f00 0103 3802 0000 7375 676f P.../...8...sugo
00000820: 763a 3000 0000 0000 0000 0000 3802 0000 v:0.........8...
00000830: 3100 0000 0008 0000 0000 0000 6d69 6772 1...........migr
00000840: 6174 696f 6e2f 3000 0000 0000 0d00 0000 ation/0.........
00000850: 0000 0000 d09c 0600 2f00 0103 0d00 0000 ......../.......
00000860: 6d69 6772 6174 696f 6e2f 3000 0000 0000 migration/0.....
00000870: 0d00 0000 0000 0000 0100 0000 0000 0000 ................
00000880: 7375 676f 763a 3000 0000 0000 0000 0000 sugov:0.........
00000890: 3802 0000 3100 0000 7061 1900 2f00 0103 8...1...pa../...
000008a0: 3802 0000 7375 676f 763a 3000 0000 0000 8...sugov:0.....
000008b0: 0000 0000 3802 0000 3100 0000 0100 0000 ....8...1.......
000008c0: 0000 0000 6465 7832 6f61 7400 3935 5f33 ....dex2oat.95_3
000008d0: 0000 0000 341f 0000 8200 0000 f03c 5600 ....4........<V.
000008e0: 2f00 0103 341f 0000 6465 7832 6f61 7400 /...4...dex2oat.
000008f0: 3935 5f33 0000 0000 341f 0000 8200 0000 95_3....4.......
00000900: 0200 0000 0000 0000 7377 6170 7065 722f ........swapper/
00000910: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
00000920: 5013 c400 2f00 0103 0000 0000 7377 6170 P.../.......swap
00000930: 7065 722f 3000 0000 0000 0000 0000 0000 per/0...........
00000940: 7800 0000 0000 0000 0000 0000 616e 6472 x...........andr
00000950: 6f69 642e 6861 7264 7761 7200 d20a 0000 oid.hardwar.....
00000960: 7800 0000 30c9 1300 2f00 0103 d20a 0000 x...0.../.......
00000970: 616e 6472 6f69 642e 6861 7264 7761 7200 android.hardwar.
00000980: d20a 0000 7800 0000 0100 0000 0000 0000 ....x...........
00000990: 7377 6170 7065 722f 3000 0000 0000 0000 swapper/0.......
000009a0: 0000 0000 7800 0000 7097 c000 2f00 0103 ....x...p.../...
000009b0: 0000 0000 7377 6170 7065 722f 3000 0000 ....swapper/0...
000009c0: 0000 0000 0000 0000 7800 0000 0000 0000 ........x.......
000009d0: 0000 0000 616e 6472 6f69 642e 6861 7264 ....android.hard
000009e0: 7761 7200 d20a 0000 7800 0000 305c 0c00 war.....x...0\..
000009f0: 2f00 0103 d20a 0000 616e 6472 6f69 642e /.......android.
00000a00: 6861 7264 7761 7200 d20a 0000 7800 0000 hardwar.....x...
00000a10: 0100 0000 0000 0000 7377 6170 7065 722f ........swapper/
00000a20: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
00000a30: d0aa 1401 2f00 0103 0000 0000 7377 6170 ..../.......swap
00000a40: 7065 722f 3000 0000 0000 0000 0000 0000 per/0...........
00000a50: 7800 0000 0000 0000 0000 0000 616e 6472 x...........andr
00000a60: 6f69 642e 6861 7264 7761 7200 d20a 0000 oid.hardwar.....
00000a70: 7800 0000 903b 0c00 2f00 0103 d20a 0000 x....;../.......
00000a80: 616e 6472 6f69 642e 6861 7264 7761 7200 android.hardwar.
00000a90: d20a 0000 7800 0000 0100 0000 0000 0000 ....x...........
00000aa0: 7377 6170 7065 722f 3000 0000 0000 0000 swapper/0.......
00000ab0: 0000 0000 7800 0000 f024 5401 2f00 0103 ....x....$T./...
00000ac0: 0000 0000 7377 6170 7065 722f 3000 0000 ....swapper/0...
00000ad0: 0000 0000 0000 0000 7800 0000 0000 0000 ........x.......
00000ae0: 0000 0000 616e 6472 6f69 642e 6861 7264 ....android.hard
00000af0: 7761 7200 d20a 0000 7800 0000 f0f3 0b00 war.....x.......
00000b00: 2f00 0103 d20a 0000 616e 6472 6f69 642e /.......android.
00000b10: 6861 7264 7761 7200 d20a 0000 7800 0000 hardwar.....x...
00000b20: 0100 0000 0000 0000 7377 6170 7065 722f ........swapper/
00000b30: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
00000b40: d0b5 bf02 2f00 0103 0000 0000 7377 6170 ..../.......swap
00000b50: 7065 722f 3000 0000 0000 0000 0000 0000 per/0...........
00000b60: 7800 0000 0000 0000 0000 0000 4469 7370 x...........Disp
00000b70: 5379 6e63 0069 6e67 6572 0000 6f02 0000 Sync.inger..o...
00000b80: 6100 0000 90cd 1400 2f00 0103 6f02 0000 a......./...o...
00000b90: 4469 7370 5379 6e63 0069 6e67 6572 0000 DispSync.inger..
00000ba0: 6f02 0000 6100 0000 0100 0000 0000 0000 o...a...........
00000bb0: 7377 6170 7065 722f 3000 0000 0000 0000 swapper/0.......
00000bc0: 0000 0000 7800 0000 50a6 1100 2f00 0103 ....x...P.../...
00000bd0: 0000 0000 7377 6170 7065 722f 3000 0000 ....swapper/0...
00000be0: 0000 0000 0000 0000 7800 0000 0000 0000 ........x.......
00000bf0: 0000 0000 7375 7266 6163 6566 6c69 6e67 ....surfacefling
00000c00: 6572 0000 4b02 0000 6200 0000 b04c 4200 er..K...b....LB.
00000c10: 2f00 0103 4b02 0000 7375 7266 6163 6566 /...K...surfacef
00000c20: 6c69 6e67 6572 0000 4b02 0000 6200 0000 linger..K...b...
00000c30: 0100 0000 0000 0000 7377 6170 7065 722f ........swapper/
00000c40: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
00000c50: b025 060a 2f00 0103 0000 0000 7377 6170 .%../.......swap
00000c60: 7065 722f 3000 0000 0000 0000 0000 0000 per/0...........
00000c70: 7800 0000 0000 0000 0000 0000 6b77 6f72 x...........kwor
00000c80: 6b65 722f 7531 363a 3600 0000 6401 0000 ker/u16:6...d...
00000c90: 7800 0000 d0b6 0600 2f00 0103 6401 0000 x......./...d...
00000ca0: 6b77 6f72 6b65 722f 7531 363a 3600 0000 kworker/u16:6...
00000cb0: 6401 0000 7800 0000 0100 0000 0000 0000 d...x...........
00000cc0: 7377 6170 7065 722f 3000 0000 0000 0000 swapper/0.......
00000cd0: 0000 0000 7800 0000 f0a0 5800 2f00 0103 ....x.....X./...
00000ce0: 0000 0000 7377 6170 7065 722f 3000 0000 ....swapper/0...
00000cf0: 0000 0000 0000 0000 7800 0000 0000 0000 ........x.......
00000d00: 0000 0000 6b77 6f72 6b65 722f 7531 363a ....kworker/u16:
00000d10: 3600 0000 6401 0000 7800 0000 f07a 1300 6...d...x....z..
00000d20: 2f00 0103 6401 0000 6b77 6f72 6b65 722f /...d...kworker/
00000d30: 7531 363a 3600 0000 6401 0000 7800 0000 u16:6...d...x...
00000d40: 0100 0000 0000 0000 7377 6170 7065 722f ........swapper/
00000d50: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
00000d60: b080 b101 2f00 0103 0000 0000 7377 6170 ..../.......swap
00000d70: 7065 722f 3000 0000 0000 0000 0000 0000 per/0...........
00000d80: 7800 0000 0000 0000 0000 0000 6b77 6f72 x...........kwor
00000d90: 6b65 722f 7531 363a 3600 0000 6401 0000 ker/u16:6...d...
00000da0: 7800 0000 103c 1200 2f00 0103 6401 0000 x....<../...d...
00000db0: 6b77 6f72 6b65 722f 7531 363a 3600 0000 kworker/u16:6...
00000dc0: 6401 0000 7800 0000 0100 0000 0000 0000 d...x...........
00000dd0: 7377 6170 7065 722f 3000 0000 0000 0000 swapper/0.......
00000de0: 0000 0000 7800 0000 50ea 3800 2f00 0103 ....x...P.8./...
00000df0: 0000 0000 7377 6170 7065 722f 3000 0000 ....swapper/0...
00000e00: 0000 0000 0000 0000 7800 0000 0000 0000 ........x.......
00000e10: 0000 0000 6b77 6f72 6b65 722f 7531 363a ....kworker/u16:
00000e20: 3600 0000 6401 0000 7800 0000 5032 0400 6...d...x...P2..
00000e30: 2f00 0103 6401 0000 6b77 6f72 6b65 722f /...d...kworker/
00000e40: 7531 363a 3600 0000 6401 0000 7800 0000 u16:6...d...x...
00000e50: 0100 0000 0000 0000 7377 6170 7065 722f ........swapper/
00000e60: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
00000e70: 70f5 9000 2f00 0103 0000 0000 7377 6170 p.../.......swap
00000e80: 7065 722f 3000 0000 0000 0000 0000 0000 per/0...........
00000e90: 7800 0000 0000 0000 0000 0000 6b77 6f72 x...........kwor
00000ea0: 6b65 722f 7531 363a 3600 0000 6401 0000 ker/u16:6...d...
00000eb0: 7800 0000 10d7 0300 2f00 0103 6401 0000 x......./...d...
00000ec0: 6b77 6f72 6b65 722f 7531 363a 3600 0000 kworker/u16:6...
00000ed0: 6401 0000 7800 0000 0100 0000 0000 0000 d...x...........
00000ee0: 7377 6170 7065 722f 3000 0000 0000 0000 swapper/0.......
00000ef0: 0000 0000 7800 0000 907c 0900 2f00 0103 ....x....|../...
00000f00: 0000 0000 7377 6170 7065 722f 3000 0000 ....swapper/0...
00000f10: 0000 0000 0000 0000 7800 0000 0000 0000 ........x.......
00000f20: 0000 0000 6b77 6f72 6b65 722f 7531 363a ....kworker/u16:
00000f30: 3600 0000 6401 0000 7800 0000 7082 0300 6...d...x...p...
00000f40: 2f00 0103 6401 0000 6b77 6f72 6b65 722f /...d...kworker/
00000f50: 7531 363a 3600 0000 6401 0000 7800 0000 u16:6...d...x...
00000f60: 0100 0000 0000 0000 7377 6170 7065 722f ........swapper/
00000f70: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
00000f80: f0ec 2100 2f00 0103 0000 0000 7377 6170 ..!./.......swap
00000f90: 7065 722f 3000 0000 0000 0000 0000 0000 per/0...........
00000fa0: 7800 0000 0000 0000 0000 0000 6b77 6f72 x...........kwor
00000fb0: 6b65 722f 7531 363a 3600 0000 6401 0000 ker/u16:6...d...
00000fc0: 7800 0000 0000 0000 0000 0000 0000 0000 x...............
00000fd0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
00000fe0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
00000ff0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
)",
};
TEST_F(CpuReaderParsePagePayloadTest, ParseFullPageSchedSwitch) {
const ExamplePage* test_case = &g_full_page_sched_switch;
ProtoTranslationTable* table = GetTable(test_case->name);
auto page = PageFromXxd(test_case->data);
FtraceDataSourceConfig ds_config = EmptyConfig();
ds_config.event_filter.AddEnabledEvent(
table->EventToFtraceId(GroupAndName("sched", "sched_switch")));
const uint8_t* parse_pos = page.get();
std::optional<CpuReader::PageHeader> page_header =
CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
const uint8_t* page_end = page.get() + base::GetSysPageSize();
ASSERT_TRUE(page_header.has_value());
EXPECT_FALSE(page_header->lost_events);
EXPECT_LE(parse_pos + page_header->size, page_end);
FtraceParseStatus status = CpuReader::ParsePagePayload(
parse_pos, &page_header.value(), table, &ds_config,
CreateBundler(ds_config), &metadata_, &last_read_event_ts_);
EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_OK);
auto bundle = GetBundle();
EXPECT_EQ(bundle.event().size(), 59u);
}
// clang-format off
// # tracer: nop
// #
// # entries-in-buffer/entries-written: 18/18 #P:8
// #
// # _-----=> irqs-off
// # / _----=> need-resched
// # | / _---=> hardirq/softirq
// # || / _--=> preempt-depth
// # ||| / delay
// # TASK-PID CPU# |||| TIMESTAMP FUNCTION
// # | | | |||| | |
// <...>-9290 [000] .... 1352.654573: suspend_resume: sync_filesystems[0] end
// <...>-9290 [000] .... 1352.665366: suspend_resume: freeze_processes[0] begin
// <...>-9290 [000] .... 1352.699711: suspend_resume: freeze_processes[0] end
// <...>-9290 [000] .... 1352.699718: suspend_resume: suspend_enter[1] end
// <...>-9290 [000] .... 1352.699723: suspend_resume: dpm_prepare[2] begin
// <...>-9290 [000] .... 1352.703470: suspend_resume: dpm_prepare[2] end
// <...>-9290 [000] .... 1352.703477: suspend_resume: dpm_suspend[2] begin
// <...>-9290 [000] .... 1352.720107: suspend_resume: dpm_resume[16] end
// <...>-9290 [000] .... 1352.720113: suspend_resume: dpm_complete[16] begin
// <...>-9290 [000] .n.. 1352.724540: suspend_resume: dpm_complete[16] end
// <...>-9290 [000] .... 1352.724567: suspend_resume: resume_console[1] begin
// <...>-9290 [000] .... 1352.724570: suspend_resume: resume_console[1] end
// <...>-9290 [000] .... 1352.724574: suspend_resume: thaw_processes[0] begin
// clang-format on
static ExamplePage g_suspend_resume{
"synthetic",
R"(00000000: edba 155a 3201 0000 7401 0000 0000 0000 ...Z2...t.......
00000010: 7e58 22cd 1201 0000 0600 0000 ac00 0000 ~X".............
00000020: 4a24 0000 5a7a f504 85ff ffff 0000 0000 J$..Zz..........
00000030: 0017 0000 c621 9614 ac00 0000 4a24 0000 .....!......J$..
00000040: 1c7a f504 85ff ffff 0000 0000 0100 0000 .z..............
00000050: e6f1 8141 ac00 0000 4a24 0000 1c7a f504 ...A....J$...z..
00000060: 85ff ffff 0000 0000 0000 0000 8682 0300 ................
00000070: ac00 0000 4a24 0000 4c7a f504 85ff ffff ....J$..Lz......
00000080: 0100 0000 0063 755f 0657 0200 ac00 0000 .....cu_.W......
00000090: 4a24 0000 8ad5 0105 85ff ffff 0200 0000 J$..............
000000a0: 0100 0000 06b5 2507 ac00 0000 4a24 0000 ......%.....J$..
000000b0: 8ad5 0105 85ff ffff 0200 0000 0000 0000 ................
000000c0: 460d 0300 ac00 0000 4a24 0000 51d5 0105 F.......J$..Q...
000000d0: 85ff ffff 0200 0000 0117 0000 c63e b81f .............>..
000000e0: ac00 0000 4a24 0000 7fd5 0105 85ff ffff ....J$..........
000000f0: 1000 0000 0010 0b00 a6f9 0200 ac00 0000 ................
00000100: 4a24 0000 96d5 0105 85ff ffff 1000 0000 J$..............
00000110: 01c0 1f00 a6dd 7108 ac00 0400 4a24 0000 ......q.....J$..
00000120: 96d5 0105 85ff ffff 1000 0000 0000 0000 ................
00000130: c6f1 0c00 ac00 0000 4a24 0000 3d7a f504 ........J$..=z..
00000140: 85ff ffff 0100 0000 01ea 24d5 a66c 0100 ..........$..l..
00000150: ac00 0000 4a24 0000 3d7a f504 85ff ffff ....J$..=z......
00000160: 0100 0000 0000 0001 6636 0200 ac00 0000 ........f6......
00000170: 4a24 0000 d178 f504 85ff ffff 0000 0000 J$...x..........
00000180: 0100 0000 0000 0000 0000 0000 0000 0000 ................
00000190: 0000 0000 0000 0000 0000 0000 0000 0000 ................
)"};
TEST_F(CpuReaderParsePagePayloadTest, ParseSuspendResume) {
const ExamplePage* test_case = &g_suspend_resume;
ProtoTranslationTable* table = GetTable(test_case->name);
auto page = PageFromXxd(test_case->data);
FtraceDataSourceConfig ds_config = EmptyConfig();
ds_config.event_filter.AddEnabledEvent(
table->EventToFtraceId(GroupAndName("power", "suspend_resume")));
const uint8_t* parse_pos = page.get();
std::optional<CpuReader::PageHeader> page_header =
CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
ASSERT_TRUE(page_header.has_value());
CpuReader::ParsePagePayload(parse_pos, &page_header.value(), table,
&ds_config, CreateBundler(ds_config), &metadata_,
&last_read_event_ts_);
auto bundle = GetBundle();
ASSERT_EQ(bundle.event().size(), 13u);
EXPECT_EQ(bundle.event()[0].suspend_resume().action(), "sync_filesystems");
EXPECT_EQ(bundle.event()[1].suspend_resume().action(), "freeze_processes");
EXPECT_EQ(bundle.event()[2].suspend_resume().action(), "freeze_processes");
EXPECT_EQ(bundle.event()[3].suspend_resume().action(), "suspend_enter");
// dpm_prepare deliberately missing from:
// src/traced/probes/ftrace/test/data/synthetic/printk_formats to ensure we
// handle that case correctly.
EXPECT_EQ(bundle.event()[4].suspend_resume().action(), "");
}
// clang-format off
// # tracer: nop
// #
// # entries-in-buffer/entries-written: 1041/238740 #P:8
// #
// # _-----=> irqs-off
// # / _----=> need-resched
// # | / _---=> hardirq/softirq
// # || / _--=> preempt-depth
// # ||| / delay
// # TASK-PID CPU# |||| TIMESTAMP FUNCTION
// # | | | |||| | |
// android.bg-1668 [000] ...1 174991.234105: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
// android.bg-1668 [000] ...1 174991.234108: ext4_mark_inode_dirty: dev 259,32 ino 2883605 caller ext4_dirty_inode+0x48/0x68
// android.bg-1668 [000] ...1 174991.234118: ext4_da_write_begin: dev 259,32 ino 2883605 pos 20480 len 4096 flags 0
// android.bg-1668 [000] ...1 174991.234126: ext4_journal_start: dev 259,32 blocks, 1 rsv_blocks, 0 caller ext4_da_write_begin+0x3d4/0x518
// android.bg-1668 [000] ...1 174991.234133: ext4_es_lookup_extent_enter: dev 259,32 ino 2883605 lblk 5
// android.bg-1668 [000] ...1 174991.234135: ext4_es_lookup_extent_exit: dev 259,32 ino 2883605 found 1 [5/4294967290) 576460752303423487 H0x10
// android.bg-1668 [000] ...2 174991.234140: ext4_da_reserve_space: dev 259,32 ino 2883605 mode 0100600 i_blocks 8 reserved_data_blocks 6 reserved_meta_blocks 0
// android.bg-1668 [000] ...1 174991.234142: ext4_es_insert_extent: dev 259,32 ino 2883605 es [5/1) mapped 576460752303423487 status D
// android.bg-1668 [000] ...1 174991.234153: ext4_da_write_end: dev 259,32 ino 2883605 pos 20480 len 4096 copied 4096
// android.bg-1668 [000] ...1 174991.234158: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
// android.bg-1668 [000] ...1 174991.234160: ext4_mark_inode_dirty: dev 259,32 ino 2883605 caller ext4_dirty_inode+0x48/0x68
// android.bg-1668 [000] ...1 174991.234170: ext4_da_write_begin: dev 259,32 ino 2883605 pos 24576 len 2968 flags 0
// android.bg-1668 [000] ...1 174991.234178: ext4_journal_start: dev 259,32 blocks, 1 rsv_blocks, 0 caller ext4_da_write_begin+0x3d4/0x518
// android.bg-1668 [000] ...1 174991.234184: ext4_es_lookup_extent_enter: dev 259,32 ino 2883605 lblk 6
// android.bg-1668 [000] ...1 174991.234187: ext4_es_lookup_extent_exit: dev 259,32 ino 2883605 found 1 [6/4294967289) 576460752303423487 H0x10
// android.bg-1668 [000] ...2 174991.234191: ext4_da_reserve_space: dev 259,32 ino 2883605 mode 0100600 i_blocks 8 reserved_data_blocks 7 reserved_meta_blocks 0
// android.bg-1668 [000] ...1 174991.234193: ext4_es_insert_extent: dev 259,32 ino 2883605 es [6/1) mapped 576460752303423487 status D
// android.bg-1668 [000] ...1 174991.234203: ext4_da_write_end: dev 259,32 ino 2883605 pos 24576 len 2968 copied 2968
// android.bg-1668 [000] ...1 174991.234209: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
// android.bg-1668 [000] ...1 174991.234211: ext4_mark_inode_dirty: dev 259,32 ino 2883605 caller ext4_dirty_inode+0x48/0x68
// android.bg-1668 [000] ...1 174991.234262: ext4_sync_file_enter: dev 259,32 ino 2883605 parent 2883592 datasync 0
// android.bg-1668 [000] ...1 174991.234270: ext4_writepages: dev 259,32 ino 2883605 nr_to_write 9223372036854775807 pages_skipped 0 range_start 0 range_end 9223372036854775807 sync_mode 1 for_kupdate 0 range_cyclic 0 writeback_index 0
// android.bg-1668 [000] ...1 174991.234287: ext4_journal_start: dev 259,32 blocks, 10 rsv_blocks, 0 caller ext4_writepages+0x6a4/0x119c
// android.bg-1668 [000] ...1 174991.234294: ext4_da_write_pages: dev 259,32 ino 2883605 first_page 0 nr_to_write 9223372036854775807 sync_mode 1
// android.bg-1668 [000] ...1 174991.234319: ext4_da_write_pages_extent: dev 259,32 ino 2883605 lblk 0 len 7 flags 0x200
// android.bg-1668 [000] ...1 174991.234322: ext4_es_lookup_extent_enter: dev 259,32 ino 2883605 lblk 0
// android.bg-1668 [000] ...1 174991.234324: ext4_es_lookup_extent_exit: dev 259,32 ino 2883605 found 1 [0/7) 576460752303423487 D0x10
// android.bg-1668 [000] ...1 174991.234328: ext4_ext_map_blocks_enter: dev 259,32 ino 2883605 lblk 0 len 7 flags CREATE|DELALLOC|METADATA_NOFAIL
// android.bg-1668 [000] ...1 174991.234341: ext4_request_blocks: dev 259,32 ino 2883605 flags HINT_DATA|DELALLOC_RESV|USE_RESV len 7 lblk 0 goal 11567104 lleft 0 lright 0 pleft 0 pright 0
// android.bg-1668 [000] ...1 174991.234394: ext4_mballoc_prealloc: dev 259,32 inode 2883605 orig 353/0/7@0 result 65/25551/7@0
// android.bg-1668 [000] ...1 174991.234400: ext4_allocate_blocks: dev 259,32 ino 2883605 flags HINT_DATA|DELALLOC_RESV|USE_RESV len 7 block 2155471 lblk 0 goal 11567104 lleft 0 lright 0 pleft 0 pright 0
// android.bg-1668 [000] ...1 174991.234409: ext4_mark_inode_dirty: dev 259,32 ino 2883605 caller __ext4_ext_dirty+0x104/0x170
// android.bg-1668 [000] ...1 174991.234420: ext4_get_reserved_cluster_alloc: dev 259,32 ino 2883605 lblk 0 len 7
// android.bg-1668 [000] ...2 174991.234426: ext4_da_update_reserve_space: dev 259,32 ino 2883605 mode 0100600 i_blocks 8 used_blocks 7 reserved_data_blocks 7 reserved_meta_blocks 0 allocated_meta_blocks 0 quota_claim 1
// android.bg-1668 [000] ...1 174991.234434: ext4_journal_start: dev 259,32 blocks, 1 rsv_blocks, 0 caller ext4_mark_dquot_dirty+0x80/0xd4
// android.bg-1668 [000] ...1 174991.234441: ext4_es_lookup_extent_enter: dev 259,32 ino 3 lblk 1
// android.bg-1668 [000] ...1 174991.234445: ext4_es_lookup_extent_exit: dev 259,32 ino 3 found 1 [0/2) 9255 W0x10
// android.bg-1668 [000] ...1 174991.234456: ext4_journal_start: dev 259,32 blocks, 1 rsv_blocks, 0 caller ext4_mark_dquot_dirty+0x80/0xd4
// android.bg-1668 [000] ...1 174991.234460: ext4_es_lookup_extent_enter: dev 259,32 ino 4 lblk 1
// android.bg-1668 [000] ...1 174991.234463: ext4_es_lookup_extent_exit: dev 259,32 ino 4 found 1 [0/2) 9257 W0x10
// android.bg-1668 [000] ...1 174991.234471: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
// android.bg-1668 [000] ...1 174991.234474: ext4_mark_inode_dirty: dev 259,32 ino 2883605 caller ext4_dirty_inode+0x48/0x68
// android.bg-1668 [000] ...1 174991.234481: ext4_ext_map_blocks_exit: dev 259,32 ino 2883605 flags CREATE|DELALLOC|METADATA_NOFAIL lblk 0 pblk 2155471 len 7 mflags NM ret 7
// android.bg-1668 [000] ...1 174991.234484: ext4_es_insert_extent: dev 259,32 ino 2883605 es [0/7) mapped 2155471 status W
// android.bg-1668 [000] ...1 174991.234547: ext4_mark_inode_dirty: dev 259,32 ino 2883605 caller ext4_writepages+0xdc0/0x119c
// android.bg-1668 [000] ...1 174991.234604: ext4_journal_start: dev 259,32 blocks, 10 rsv_blocks, 0 caller ext4_writepages+0x6a4/0x119c
// android.bg-1668 [000] ...1 174991.234609: ext4_da_write_pages: dev 259,32 ino 2883605 first_page 7 nr_to_write 9223372036854775800 sync_mode 1
// android.bg-1668 [000] ...1 174991.234876: ext4_writepages_result: dev 259,32 ino 2883605 ret 0 pages_written 7 pages_skipped 0 sync_mode 1 writeback_index 7
// Profile Saver-5504 [000] ...1 175002.711928: ext4_discard_preallocations: dev 259,32 ino 1311176
// Profile Saver-5504 [000] ...1 175002.714165: ext4_begin_ordered_truncate: dev 259,32 ino 1311176 new_size 0
// Profile Saver-5504 [000] ...1 175002.714172: ext4_journal_start: dev 259,32 blocks, 3 rsv_blocks, 0 caller ext4_setattr+0x5b4/0x788
// Profile Saver-5504 [000] ...1 175002.714218: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_setattr+0x65c/0x788
// Profile Saver-5504 [000] ...1 175002.714277: ext4_invalidatepage: dev 259,32 ino 1311176 page_index 0 offset 0 length 4096
// Profile Saver-5504 [000] ...1 175002.714281: ext4_releasepage: dev 259,32 ino 1311176 page_index 0
// Profile Saver-5504 [000] ...1 175002.714295: ext4_invalidatepage: dev 259,32 ino 1311176 page_index 1 offset 0 length 4096
// Profile Saver-5504 [000] ...1 175002.714296: ext4_releasepage: dev 259,32 ino 1311176 page_index 1
// Profile Saver-5504 [000] ...1 175002.714315: ext4_truncate_enter: dev 259,32 ino 1311176 blocks 24
// Profile Saver-5504 [000] ...1 175002.714318: ext4_journal_start: dev 259,32 blocks, 10 rsv_blocks, 0 caller ext4_truncate+0x258/0x4b8
// Profile Saver-5504 [000] ...1 175002.714322: ext4_discard_preallocations: dev 259,32 ino 1311176
// Profile Saver-5504 [000] ...1 175002.714324: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_ext_truncate+0x24/0xc8
// Profile Saver-5504 [000] ...1 175002.714328: ext4_es_remove_extent: dev 259,32 ino 1311176 es [0/4294967295)
// Profile Saver-5504 [000] ...1 175002.714335: ext4_journal_start: dev 259,32 blocks, 1 rsv_blocks, 0 caller ext4_ext_remove_space+0x60/0x1180
// Profile Saver-5504 [000] ...1 175002.714338: ext4_ext_remove_space: dev 259,32 ino 1311176 since 0 end 4294967294 depth 0
// Profile Saver-5504 [000] ...1 175002.714347: ext4_ext_rm_leaf: dev 259,32 ino 1311176 start_lblk 0 last_extent [0(5276994), 2]partial_cluster 0
// Profile Saver-5504 [000] ...1 175002.714351: ext4_remove_blocks: dev 259,32 ino 1311176 extent [0(5276994), 2]from 0 to 1 partial_cluster 0
// Profile Saver-5504 [000] ...1 175002.714354: ext4_free_blocks: dev 259,32 ino 1311176 mode 0100600 block 5276994 count 2 flags 1ST_CLUSTER
// Profile Saver-5504 [000] ...1 175002.714365: ext4_mballoc_free: dev 259,32 inode 1311176 extent 161/1346/2
// Profile Saver-5504 [000] ...1 175002.714382: ext4_journal_start: dev 259,32 blocks, 1 rsv_blocks, 0 caller ext4_mark_dquot_dirty+0x80/0xd4
// Profile Saver-5504 [000] ...1 175002.714391: ext4_es_lookup_extent_enter: dev 259,32 ino 3 lblk 4
// Profile Saver-5504 [000] ...1 175002.714394: ext4_es_lookup_extent_exit: dev 259,32 ino 3 found 1 [4/1) 557094 W0x10
// Profile Saver-5504 [000] ...1 175002.714402: ext4_journal_start: dev 259,32 blocks, 1 rsv_blocks, 0 caller ext4_mark_dquot_dirty+0x80/0xd4
// Profile Saver-5504 [000] ...1 175002.714404: ext4_es_lookup_extent_enter: dev 259,32 ino 4 lblk 8
// Profile Saver-5504 [000] ...1 175002.714406: ext4_es_lookup_extent_exit: dev 259,32 ino 4 found 1 [8/3) 7376914 W0x10
// Profile Saver-5504 [000] ...1 175002.714413: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
// Profile Saver-5504 [000] ...1 175002.714414: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
// Profile Saver-5504 [000] ...1 175002.714420: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller __ext4_ext_dirty+0x104/0x170
// Profile Saver-5504 [000] ...1 175002.714423: ext4_ext_remove_space_done: dev 259,32 ino 1311176 since 0 end 4294967294 depth 0 partial 0 remaining_entries 0
// Profile Saver-5504 [000] ...1 175002.714425: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller __ext4_ext_dirty+0x104/0x170
// Profile Saver-5504 [000] ...1 175002.714433: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_truncate+0x3c4/0x4b8
// Profile Saver-5504 [000] ...1 175002.714436: ext4_truncate_exit: dev 259,32 ino 1311176 blocks 8
// Profile Saver-5504 [000] ...1 175002.714437: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
// Profile Saver-5504 [000] ...1 175002.714438: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
// Profile Saver-5504 [000] ...1 175002.714462: ext4_da_write_begin: dev 259,32 ino 1311176 pos 0 len 4 flags 0
// Profile Saver-5504 [000] ...1 175002.714472: ext4_journal_start: dev 259,32 blocks, 1 rsv_blocks, 0 caller ext4_da_write_begin+0x3d4/0x518
// Profile Saver-5504 [000] ...1 175002.714477: ext4_es_lookup_extent_enter: dev 259,32 ino 1311176 lblk 0
// Profile Saver-5504 [000] ...1 175002.714477: ext4_es_lookup_extent_exit: dev 259,32 ino 1311176 found 0 [0/0) 0
// Profile Saver-5504 [000] ...1 175002.714480: ext4_ext_map_blocks_enter: dev 259,32 ino 1311176 lblk 0 len 1 flags
// Profile Saver-5504 [000] ...1 175002.714485: ext4_es_find_delayed_extent_range_enter: dev 259,32 ino 1311176 lblk 0
// Profile Saver-5504 [000] ...1 175002.714488: ext4_es_find_delayed_extent_range_exit: dev 259,32 ino 1311176 es [0/0) mapped 0 status
// Profile Saver-5504 [000] ...1 175002.714490: ext4_es_insert_extent: dev 259,32 ino 1311176 es [0/4294967295) mapped 576460752303423487 status H
// Profile Saver-5504 [000] ...1 175002.714495: ext4_ext_map_blocks_exit: dev 259,32 ino 1311176 flags lblk 0 pblk 4294967296 len 1 mflags ret 0
// Profile Saver-5504 [000] ...2 175002.714501: ext4_da_reserve_space: dev 259,32 ino 1311176 mode 0100600 i_blocks 8 reserved_data_blocks 1 reserved_meta_blocks 0
// Profile Saver-5504 [000] ...1 175002.714505: ext4_es_insert_extent: dev 259,32 ino 1311176 es [0/1) mapped 576460752303423487 status D
// Profile Saver-5504 [000] ...1 175002.714513: ext4_da_write_end: dev 259,32 ino 1311176 pos 0 len 4 copied 4
// Profile Saver-5504 [000] ...1 175002.714519: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
// Profile Saver-5504 [000] ...1 175002.714520: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
// Profile Saver-5504 [000] ...1 175002.714527: ext4_da_write_begin: dev 259,32 ino 1311176 pos 4 len 4 flags 0
// Profile Saver-5504 [000] ...1 175002.714529: ext4_journal_start: dev 259,32 blocks, 1 rsv_blocks, 0 caller ext4_da_write_begin+0x3d4/0x518
// Profile Saver-5504 [000] ...1 175002.714531: ext4_da_write_end: dev 259,32 ino 1311176 pos 4 len 4 copied 4
// Profile Saver-5504 [000] ...1 175002.714532: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
// Profile Saver-5504 [000] ...1 175002.714532: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
// Profile Saver-5504 [000] ...1 175002.715313: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
// Profile Saver-5504 [000] ...1 175002.715322: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
// Profile Saver-5504 [000] ...1 175002.723849: ext4_da_write_begin: dev 259,32 ino 1311176 pos 8 len 5 flags 0
// Profile Saver-5504 [000] ...1 175002.723862: ext4_journal_start: dev 259,32 blocks, 1 rsv_blocks, 0 caller ext4_da_write_begin+0x3d4/0x518
// Profile Saver-5504 [000] ...1 175002.723873: ext4_da_write_end: dev 259,32 ino 1311176 pos 8 len 5 copied 5
// Profile Saver-5504 [000] ...1 175002.723877: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
// Profile Saver-5504 [000] ...1 175002.723879: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
// Profile Saver-5504 [000] ...1 175002.726857: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
// Profile Saver-5504 [000] ...1 175002.726867: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
// Profile Saver-5504 [000] ...1 175002.726881: ext4_da_write_begin: dev 259,32 ino 1311176 pos 13 len 4 flags 0
// Profile Saver-5504 [000] ...1 175002.726883: ext4_journal_start: dev 259,32 blocks, 1 rsv_blocks, 0 caller ext4_da_write_begin+0x3d4/0x518
// Profile Saver-5504 [000] ...1 175002.726890: ext4_da_write_end: dev 259,32 ino 1311176 pos 13 len 4 copied 4
// Profile Saver-5504 [000] ...1 175002.726892: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
// Profile Saver-5504 [000] ...1 175002.726892: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
// Profile Saver-5504 [000] ...1 175002.726900: ext4_da_write_begin: dev 259,32 ino 1311176 pos 17 len 4079 flags 0
// Profile Saver-5504 [000] ...1 175002.726901: ext4_journal_start: dev 259,32 blocks, 1 rsv_blocks, 0 caller ext4_da_write_begin+0x3d4/0x518
// Profile Saver-5504 [000] ...1 175002.726904: ext4_da_write_end: dev 259,32 ino 1311176 pos 17 len 4079 copied 4079
// Profile Saver-5504 [000] ...1 175002.726905: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
// Profile Saver-5504 [000] ...1 175002.726906: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
// Profile Saver-5504 [000] ...1 175002.726908: ext4_da_write_begin: dev 259,32 ino 1311176 pos 4096 len 2780 flags 0
// Profile Saver-5504 [000] ...1 175002.726916: ext4_journal_start: dev 259,32 blocks, 1 rsv_blocks, 0 caller ext4_da_write_begin+0x3d4/0x518
// Profile Saver-5504 [000] ...1 175002.726921: ext4_es_lookup_extent_enter: dev 259,32 ino 1311176 lblk 1
// Profile Saver-5504 [000] ...1 175002.726924: ext4_es_lookup_extent_exit: dev 259,32 ino 1311176 found 1 [1/4294967294) 576460752303423487 H0x10
// Profile Saver-5504 [000] ...2 175002.726931: ext4_da_reserve_space: dev 259,32 ino 1311176 mode 0100600 i_blocks 8 reserved_data_blocks 2 reserved_meta_blocks 0
// Profile Saver-5504 [000] ...1 175002.726933: ext4_es_insert_extent: dev 259,32 ino 1311176 es [1/1) mapped 576460752303423487 status D
// Profile Saver-5504 [000] ...1 175002.726940: ext4_da_write_end: dev 259,32 ino 1311176 pos 4096 len 2780 copied 2780
// Profile Saver-5504 [000] ...1 175002.726941: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
// Profile Saver-5504 [000] ...1 175002.726942: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
// d.process.acor-27885 [000] ...1 175018.227675: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
// d.process.acor-27885 [000] ...1 175018.227699: ext4_mark_inode_dirty: dev 259,32 ino 3278189 caller ext4_dirty_inode+0x48/0x68
// d.process.acor-27885 [000] ...1 175018.227839: ext4_sync_file_enter: dev 259,32 ino 3278183 parent 3277001 datasync 1
// d.process.acor-27885 [000] ...1 175018.227847: ext4_writepages: dev 259,32 ino 3278183 nr_to_write 9223372036854775807 pages_skipped 0 range_start 0 range_end 9223372036854775807 sync_mode 1 for_kupdate 0 range_cyclic 0 writeback_index 2
// d.process.acor-27885 [000] ...1 175018.227852: ext4_writepages_result: dev 259,32 ino 3278183 ret 0 pages_written 0 pages_skipped 0 sync_mode 1 writeback_index 2
// clang-format on
static ExamplePage g_full_page_ext4{
"synthetic",
R"(
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00000040: 2000 3010 9200 0000 1500 2c00 0000 0000 .0.......,.....
00000050: a029 e86a 91ff ffff 0ac8 0400 1e01 0001 .).j............
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00000070: 0000 0000 0050 0000 0000 0000 0010 0000 .....P..........
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00000090: 2000 3010 91ff ffff 586f e86a 91ff ffff .0.....Xo.j....
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000000b0: 8406 0000 2000 3010 0000 0000 1500 2c00 .... .0.......,.
000000c0: 0000 0000 0500 0000 5701 0001 ac6c 0100 ........W....l..
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00000110: 0000 0000 1500 2c00 0000 0000 0800 0000 ......,.........
00000120: 0000 0000 0600 0000 0000 0000 8081 0000 ................
00000130: 0000 0000 ec24 0100 6701 0001 8406 0000 .....$..g.......
00000140: 2000 3010 0000 0000 1500 2c00 0000 0000 .0.......,.....
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00000160: 0400 0000 7b04 3200 2a30 0500 2101 0001 ....{.2.*0..!...
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00000180: 0000 0000 0050 0000 0000 0000 0010 0000 .....P..........
00000190: 0010 0000 288b 0200 5701 0001 8406 0000 ....(...W.......
000001a0: 2000 3010 0000 0000 8829 e86a 91ff ffff .0......).j....
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000001c0: 8406 0000 2000 3010 566b 0000 1500 2c00 .... .0.Vk....,.
000001d0: 0000 0000 a029 e86a 91ff ffff eaa0 0400 .....).j........
000001e0: 1e01 0001 8406 0000 2000 3010 280b 0400 ........ .0.(...
000001f0: 1500 2c00 0000 0000 0060 0000 0000 0000 ..,......`......
00000200: 980b 0000 0000 0000 88d0 0300 5701 0001 ............W...
00000210: 8406 0000 2000 3010 566b 0000 586f e86a .... .0.Vk..Xo.j
00000220: 91ff ffff 0100 0000 0000 0000 c813 0300 ................
00000230: 6c01 0001 8406 0000 2000 3010 566b 0000 l....... .0.Vk..
00000240: 1500 2c00 0000 0000 0600 0000 0000 0000 ..,.............
00000250: ac5f 0100 6d01 0001 8406 0000 2000 3010 ._..m....... .0.
00000260: 1100 3010 1500 2c00 0000 0000 0600 0000 ..0...,.........
00000270: f9ff ffff ffff ffff ffff ff07 185a ea6a .............Z.j
00000280: 0100 0000 4c02 0200 3f01 0002 8406 0000 ....L...?.......
00000290: 2000 3010 566b 0000 1500 2c00 0000 0000 .0.Vk....,.....
000002a0: 0800 0000 0000 0000 0700 0000 0000 0000 ................
000002b0: 8081 0000 6d01 0001 0c0b 0100 6701 0001 ....m.......g...
000002c0: 8406 0000 2000 3010 0000 0000 1500 2c00 .... .0.......,.
000002d0: 0000 0000 0600 0000 0100 0000 ffff ffff ................
000002e0: ffff ff07 049a 0100 5701 0001 aa1c 0500 ........W.......
000002f0: 2101 0001 8406 0000 2000 3010 91ff ffff !....... .0.....
00000300: 1500 2c00 0000 0000 0060 0000 0000 0000 ..,......`......
00000310: 980b 0000 980b 0000 889e 0200 5701 0001 ............W...
00000320: 8406 0000 2000 3010 91ff ffff 8829 e86a .... .0......).j
00000330: 91ff ffff 0200 0000 0000 0000 8838 0100 .............8..
00000340: 1b01 0001 8406 0000 2000 3010 91ff ffff ........ .0.....
00000350: 1500 2c00 0000 0000 a029 e86a 91ff ffff ..,......).j....
00000360: 2ab8 1800 3501 0001 8406 0000 2000 3010 *...5....... .0.
00000370: feff ffff 1500 2c00 0000 0000 0800 2c00 ......,.......,.
00000380: 0000 0000 0000 0000 2000 3010 32fe 0300 ........ .0.2...
00000390: 2201 0001 8406 0000 2000 3010 0000 0000 "....... .0.....
000003a0: 1500 2c00 0000 0000 ffff ffff ffff ff7f ..,.............
000003b0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
000003c0: ffff ffff ffff ff7f 0000 0000 0000 0000 ................
000003d0: 0100 0000 0000 0000 887e 0800 5701 0001 .........~..W...
000003e0: 8406 0000 2000 3010 7b04 3200 7c3f e86a .... .0.{.2.|?.j
000003f0: 91ff ffff 0a00 0000 0000 0000 ec2d 0300 .............-..
00000400: 2301 0001 8406 0000 2000 3010 7b04 3200 #....... .0.{.2.
00000410: 1500 2c00 0000 0000 0000 0000 0000 0000 ..,.............
00000420: ffff ffff ffff ff7f 0100 0000 3c01 0001 ............<...
00000430: 0a42 0c00 2401 0001 8406 0000 2000 3010 .B..$....... .0.
00000440: 0800 0000 1500 2c00 0000 0000 0000 0000 ......,.........
00000450: 0000 0000 0700 0000 0002 0000 885f 0100 ............._..
00000460: 6c01 0001 8406 0000 2000 3010 0100 0000 l....... .0.....
00000470: 1500 2c00 0000 0000 0000 0000 566b 0000 ..,.........Vk..
00000480: 0c25 0100 6d01 0001 8406 0000 2000 3010 .%..m....... .0.
00000490: 0400 0000 1500 2c00 0000 0000 0000 0000 ......,.........
000004a0: 0700 0000 ffff ffff ffff ff07 1400 0000 ................
000004b0: 0100 0000 caee 0100 5101 0001 8406 0000 ........Q.......
000004c0: 2000 3010 1100 0000 1500 2c00 0000 0000 .0.......,.....
000004d0: 0000 0000 0700 0000 2500 0000 2000 3010 ........%... .0.
000004e0: 323b 0600 3201 0001 8406 0000 2000 3010 2;..2....... .0.
000004f0: c86e 0000 1500 2c00 0000 0000 0700 0000 .n....,.........
00000500: 0000 0000 0000 0000 0000 0000 0080 b000 ................
00000510: 0000 0000 0000 0000 0000 0000 0000 0000 ................
00000520: 0000 0000 2024 0000 0400 0000 ae0a 1a00 .... $..........
00000530: 3a01 0001 8406 0000 2000 3010 0000 0000 :....... .0.....
00000540: 1500 2c00 0000 0000 0000 0000 0000 0000 ..,.............
00000550: 6101 0000 0700 0000 0000 0000 cf63 0000 a............c..
00000560: 4100 0000 0700 0000 b4c5 0200 3301 0001 A...........3...
00000570: 8406 0000 2000 3010 2000 3010 1500 2c00 .... .0. .0...,.
00000580: 0000 0000 cfe3 2000 0000 0000 0700 0000 ...... .........
00000590: 0000 0000 0000 0000 0000 0000 0080 b000 ................
000005a0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
000005b0: 0000 0000 2024 0000 6c01 0001 4859 0400 .... $..l...HY..
000005c0: 1b01 0001 8406 0000 2000 3010 0000 0000 ........ .0.....
000005d0: 1500 2c00 0000 0000 9c99 ea6a 91ff ffff ..,........j....
000005e0: c850 0500 6001 0001 8406 0000 2000 3010 .P..`....... .0.
000005f0: 0000 0000 1500 2c00 0000 0000 0000 0000 ......,.........
00000600: 0700 0000 2ee6 0200 3e01 0002 8406 0000 ........>.......
00000610: 2000 3010 566b 0000 1500 2c00 0000 0000 .0.Vk....,.....
00000620: 0800 0000 0000 0000 0700 0000 0700 0000 ................
00000630: 0000 0000 0000 0000 0100 0000 8081 3010 ..............0.
00000640: a804 0400 5701 0001 8406 0000 2000 3010 ....W....... .0.
00000650: cb07 3200 885a ea6a 91ff ffff 0100 0000 ..2..Z.j........
00000660: 0000 0000 8875 0300 6c01 0001 8406 0000 .....u..l.......
00000670: 2000 3010 0300 0000 0300 0000 0000 0000 .0.............
00000680: 0100 0000 0100 0000 ccd4 0100 6d01 0001 ............m...
00000690: 8406 0000 2000 3010 cb07 3200 0300 0000 .... .0...2.....
000006a0: 0000 0000 0000 0000 0200 0000 2724 0000 ............'$..
000006b0: 0000 0000 1100 3010 0100 0000 a850 0500 ......0......P..
000006c0: 5701 0001 8406 0000 2000 3010 0000 0000 W....... .0.....
000006d0: 885a ea6a 91ff ffff 0100 0000 0000 0000 .Z.j............
000006e0: 680f 0200 6c01 0001 8406 0000 2000 3010 h...l....... .0.
000006f0: 0000 0000 0400 0000 0000 0000 0100 0000 ................
00000700: 6d01 0001 ac79 0100 6d01 0001 8406 0000 m....y..m.......
00000710: 2000 3010 0000 0000 0400 0000 0000 0000 .0.............
00000720: 0000 0000 0200 0000 2924 0000 0000 0000 ........)$......
00000730: 1143 0200 0100 0000 2818 0400 5701 0001 .C......(...W...
00000740: 8406 0000 2000 3010 0000 0000 8829 e86a .... .0......).j
00000750: 91ff ffff 0200 0000 0000 0000 8838 0100 .............8..
00000760: 1b01 0001 8406 0000 2000 3010 0400 0000 ........ .0.....
00000770: 1500 2c00 0000 0000 a029 e86a 91ff ffff ..,......).j....
00000780: 0e89 0300 5301 0001 8406 0000 2000 3010 ....S....... .0.
00000790: e128 0000 1500 2c00 0000 0000 2500 0000 .(....,.....%...
000007a0: 0000 0000 cfe3 2000 0000 0000 0000 0000 ...... .........
000007b0: 0700 0000 6000 0000 0700 0000 aca0 0100 ....`...........
000007c0: 6701 0001 8406 0000 2000 3010 e128 0000 g....... .0..(..
000007d0: 1500 2c00 0000 0000 0000 0000 0700 0000 ..,.............
000007e0: cfe3 2000 0000 0000 01a2 0800 0000 0000 .. .............
000007f0: 28b2 1e00 1b01 0001 8406 0000 2000 3010 (........... .0.
00000800: e128 0000 1500 2c00 0000 0000 9846 e86a .(....,......F.j
00000810: 91ff ffff 68d2 1b00 5701 0001 8406 0000 ....h...W.......
00000820: 2000 3010 e128 0000 7c3f e86a 91ff ffff .0..(..|?.j....
00000830: 0a00 0000 0000 0000 0c57 0200 2301 0001 .........W..#...
00000840: 8406 0000 2000 3010 006c 0000 1500 2c00 .... .0..l....,.
00000850: 0000 0000 0700 0000 0000 0000 f8ff ffff ................
00000860: ffff ff7f 0100 0000 0000 0000 6e69 8200 ............ni..
00000870: 2501 0001 8406 0000 2000 3010 ca6e 0000 %....... .0..n..
00000880: 1500 2c00 0000 0000 0000 0000 0700 0000 ..,.............
00000890: 0000 0000 0000 0000 0700 0000 0000 0000 ................
000008a0: 0100 0000 0200 3010 3e13 bd82 5500 0000 ......0.>...U...
000008b0: 0600 0000 3001 0001 8015 0000 2000 3010 ....0....... .0.
000008c0: 0000 0000 c801 1400 0000 0000 8860 4404 .............`D.
000008d0: 1c01 0001 8015 0000 2000 3010 2000 0000 ........ .0. ...
000008e0: c801 1400 0000 0000 0000 0000 0000 0000 ................
000008f0: 88a9 0300 5701 0001 8015 0000 2000 3010 ....W....... .0.
00000900: 0400 0000 1c1e e86a 91ff ffff 0300 0000 .......j........
00000910: 0000 0000 a85a 1600 1b01 0001 8015 0000 .....Z..........
00000920: 2000 3010 2000 3010 c801 1400 0000 0000 .0. .0.........
00000930: c41e e86a 91ff ffff ca95 1c00 2901 0001 ...j........)...
00000940: 8015 0000 2000 3010 2000 3010 c801 1400 .... .0. .0.....
00000950: 0000 0000 0000 0000 0000 0000 0000 0000 ................
00000960: 0010 0000 c8fb 0100 2801 0001 8015 0000 ........(.......
00000970: 2000 3010 5101 0001 c801 1400 0000 0000 .0.Q...........
00000980: 0000 0000 0000 0000 6af1 0600 2901 0001 ........j...)...
00000990: 8015 0000 2000 3010 0000 0000 c801 1400 .... .0.........
000009a0: 0000 0000 0100 0000 0000 0000 0000 0000 ................
000009b0: 0010 0000 488f 0000 2801 0001 8015 0000 ....H...(.......
000009c0: 2000 3010 0200 ffff c801 1400 0000 0000 .0.............
000009d0: 0100 0000 0000 0000 483b 0900 4d01 0001 ........H;..M...
000009e0: 8015 0000 2000 3010 0000 0000 c801 1400 .... .0.........
000009f0: 0000 0000 1800 0000 0000 0000 8852 0100 .............R..
00000a00: 5701 0001 8015 0000 2000 3010 e128 0000 W....... .0..(..
00000a10: 9ce9 e76a 91ff ffff 0a00 0000 0000 0000 ...j............
00000a20: e615 0200 3001 0001 8015 0000 2000 3010 ....0....... .0.
00000a30: 0155 0000 c801 1400 0000 0000 68d0 0000 .U..........h...
00000a40: 1b01 0001 8015 0000 2000 3010 6606 3200 ........ .0.f.2.
00000a50: c801 1400 0000 0000 acfa ea6a 91ff ffff ...........j....
00000a60: 6a0f 0200 6901 0001 8015 0000 2000 3010 j...i....... .0.
00000a70: 7106 3200 c801 1400 0000 0000 0000 0000 q.2.............
00000a80: 0000 0000 ffff ffff 0000 0000 e895 0300 ................
00000a90: 5701 0001 8015 0000 2000 3010 0300 0000 W....... .0.....
00000aa0: acbe ea6a 91ff ffff 0100 0000 0000 0000 ...j............
00000ab0: 8a38 0100 6501 0001 8015 0000 2000 3010 .8..e....... .0.
00000ac0: c41e e86a c801 1400 0000 0000 0000 0000 ...j............
00000ad0: feff ffff 0000 0000 0000 0000 ee86 0400 ................
00000ae0: 6301 0001 8015 0000 2000 3010 0000 0000 c....... .0.....
00000af0: c801 1400 0000 0000 0000 0000 0000 0000 ................
00000b00: 0000 0000 0000 0000 4285 5000 0000 0000 ........B.P.....
00000b10: 0200 0000 0000 0000 8e36 0200 6201 0001 .........6..b...
00000b20: 8015 0000 2000 3010 7d55 0000 c801 1400 .... .0.}U......
00000b30: 0000 0000 0000 0000 0100 0000 0000 0000 ................
00000b40: 0000 0000 4285 5000 0000 0000 0000 0000 ....B.P.........
00000b50: 0200 3010 8c5f 0100 3401 0001 8015 0000 ..0.._..4.......
00000b60: 2000 3010 0000 0000 c801 1400 0000 0000 .0.............
00000b70: 4285 5000 0000 0000 0200 0000 0000 0000 B.P.............
00000b80: 1000 0000 8081 0000 aa43 0500 3c01 0001 .........C..<...
00000b90: 8015 0000 2000 3010 2801 0001 c801 1400 .... .0.(.......
00000ba0: 0000 0000 4205 0000 a100 0000 0200 0000 ....B...........
00000bb0: 0200 0000 8871 0800 5701 0001 8015 0000 .....q..W.......
00000bc0: 2000 3010 2000 3010 885a ea6a 91ff ffff .0. .0..Z.j....
00000bd0: 0100 0000 0000 0000 4825 0400 6c01 0001 ........H%..l...
00000be0: 8015 0000 2000 3010 2801 0001 0300 0000 .... .0.(.......
00000bf0: 0000 0000 0400 0000 7106 3200 0c73 0100 ........q.2..s..
00000c00: 6d01 0001 8015 0000 2000 3010 2901 0001 m....... .0.)...
00000c10: 0300 0000 0000 0000 0400 0000 0100 0000 ................
00000c20: 2680 0800 0000 0000 1100 0000 0100 0000 &...............
00000c30: c845 0400 5701 0001 8015 0000 2000 3010 .E..W....... .0.
00000c40: 2000 3010 885a ea6a 91ff ffff 0100 0000 .0..Z.j........
00000c50: 0000 0000 e8c9 0000 6c01 0001 8015 0000 ........l.......
00000c60: 2000 3010 2000 3010 0400 0000 0000 0000 .0. .0.........
00000c70: 0800 0000 0500 0000 6cdd 0000 6d01 0001 ........l...m...
00000c80: 8015 0000 2000 3010 2801 0001 0400 0000 .... .0.(.......
00000c90: 0000 0000 0800 0000 0300 0000 1290 7000 ..............p.
00000ca0: 0000 0000 1100 0000 0100 0000 6875 0300 ............hu..
00000cb0: 5701 0001 8015 0000 2000 3010 7106 3200 W....... .0.q.2.
00000cc0: 8829 e86a 91ff ffff 0200 0000 0000 0000 .).j............
00000cd0: a847 0000 1b01 0001 8015 0000 2000 3010 .G.......... .0.
00000ce0: 9ce9 e76a c801 1400 0000 0000 a029 e86a ...j.........).j
00000cf0: 91ff ffff e83a 0300 1b01 0001 8015 0000 .....:..........
00000d00: 2000 3010 7106 3200 c801 1400 0000 0000 .0.q.2.........
00000d10: 9c99 ea6a 91ff ffff ae93 0100 6601 0001 ...j........f...
00000d20: 8015 0000 2000 3010 acfa ea6a c801 1400 .... .0....j....
00000d30: 0000 0000 0000 0000 feff ffff 0000 0000 ................
00000d40: 2000 3010 0000 0000 0000 0000 0000 0000 .0.............
00000d50: 0000 0000 48b6 0000 1b01 0001 8015 0000 ....H...........
00000d60: 2000 3010 e128 0000 c801 1400 0000 0000 .0..(..........
00000d70: 9c99 ea6a 91ff ffff a8ea 0300 1b01 0001 ...j............
00000d80: 8015 0000 2000 3010 e128 0000 c801 1400 .... .0..(......
00000d90: 0000 0000 08eb e76a 91ff ffff 885f 0100 .......j....._..
00000da0: 4e01 0001 8015 0000 2000 3010 2efe 0300 N....... .0.....
00000db0: c801 1400 0000 0000 0800 0000 0000 0000 ................
00000dc0: e8bc 0000 5701 0001 8015 0000 2000 3010 ....W....... .0.
00000dd0: 0000 0000 8829 e86a 91ff ffff 0200 0000 .....).j........
00000de0: 0000 0000 c895 0000 1b01 0001 8015 0000 ................
00000df0: 2000 3010 2000 3010 c801 1400 0000 0000 .0. .0.........
00000e00: a029 e86a 91ff ffff cab2 0b00 1e01 0001 .).j............
00000e10: 8015 0000 2000 3010 0000 0000 c801 1400 .... .0.........
00000e20: 0000 0000 0000 0000 0000 0000 0400 0000 ................
00000e30: 0000 0000 689a 0400 5701 0001 8015 0000 ....h...W.......
00000e40: 2000 3010 0000 0000 586f e86a 91ff ffff .0.....Xo.j....
00000e50: 0100 0000 0000 0000 8884 0200 6c01 0001 ............l...
00000e60: 8015 0000 2000 3010 8829 e86a c801 1400 .... .0..).j....
00000e70: 0000 0000 0000 0000 4100 0000 ac47 0000 ........A....G..
00000e80: 6d01 0001 8015 0000 2000 3010 e128 0000 m....... .0..(..
00000e90: c801 1400 0000 0000 0000 0000 0000 0000 ................
00000ea0: 0000 0000 0000 0000 001c 0200 0000 0000 ................
00000eb0: 2a66 0100 5101 0001 8015 0000 2000 3010 *f..Q....... .0.
00000ec0: 0000 0000 c801 1400 0000 0000 0000 0000 ................
00000ed0: 0100 0000 0000 0000 2000 3010 087e 0200 ........ .0..~..
00000ee0: 6a01 0001 8015 0000 2000 3010 0100 0000 j....... .0.....
00000ef0: c801 1400 0000 0000 0000 0000 0100 0000 ................
00000f00: 8c11 0100 6b01 0001 8015 0000 2000 3010 ....k....... .0.
00000f10: 1b01 0001 c801 1400 0000 0000 0000 0000 ................
00000f20: 0000 0000 0000 0000 0000 0000 0028 0000 .............(..
00000f30: 2000 3010 8c5f 0100 6701 0001 8015 0000 .0.._..g.......
00000f40: 2000 3010 0000 0000 c801 1400 0000 0000 .0.............
00000f50: 0000 0000 ffff ffff ffff ffff ffff ff07 ................
00000f60: 0800 0000 0700 0000 6e02 0200 5301 0001 ........n...S...
00000f70: 8015 0000 2000 3010 0100 0000 c801 1400 .... .0.........
00000f80: 0000 0000 0000 0000 2000 3010 0000 0000 ........ .0.....
00000f90: 0100 0000 0000 0000 0100 0000 0000 0000 ................
00000fa0: 0000 0000 cc3a 0300 3f01 0002 8015 0000 .....:..?.......
00000fb0: 2000 3010 7106 3200 c801 1400 0000 0000 .0.q.2.........
00000fc0: 0800 0000 0000 0000 0100 0000 0000 0000 ................
00000fd0: 8081 3010 3d00 0000 f542 0000 0000 0000 ..0.=....B......
00000fe0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
00000ff0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
)",
};
TEST_F(CpuReaderParsePagePayloadTest, ParseExt4WithOverwrite) {
const ExamplePage* test_case = &g_full_page_ext4;
ProtoTranslationTable* table = GetTable(test_case->name);
auto page = PageFromXxd(test_case->data);
FtraceDataSourceConfig ds_config = EmptyConfig();
ds_config.event_filter.AddEnabledEvent(
table->EventToFtraceId(GroupAndName("sched", "sched_switch")));
const uint8_t* parse_pos = page.get();
std::optional<CpuReader::PageHeader> page_header =
CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
const uint8_t* page_end = page.get() + base::GetSysPageSize();
ASSERT_TRUE(page_header.has_value());
EXPECT_TRUE(page_header->lost_events); // data loss
EXPECT_LE(parse_pos + page_header->size, page_end);
FtraceParseStatus status = CpuReader::ParsePagePayload(
parse_pos, &page_header.value(), table, &ds_config,
CreateBundler(ds_config), &metadata_, &last_read_event_ts_);
EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_OK);
EXPECT_THAT(AllTracePackets(), IsEmpty());
}
// Page with a single event containing a __data_loc entry with value 0x0000
//
// [timestamp ] [32 byte payload next ]
// 00000000: D7 B3 0A 57 CF 02 00 00 20 00 00 00 00 00 00 00 ...W.... .......
// [evt hdr ] [id ]
// 00000010: 67 A6 13 00 0F 06 00 00 3D 01 00 00 45 00 00 00 g.......=...E...
// 00000020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
//
// name: tracing_mark_write
// ID: 1551
// format:
// field:unsigned short common_type; offset:0; size:2; signed:0;
// field:unsigned char common_flags; offset:2; size:1; signed:0;
// field:unsigned char common_preempt_count; offset:3; size:1;
// signed:0; field:int common_pid; offset:4; size:4; signed:1;
//
// field:char type; offset:8; size:1; signed:0;
// field:int pid; offset:12; size:4; signed:1;
// field:__data_loc char[] name; offset:16; size:4; signed:0;
// field:int value; offset:20; size:4; signed:1;
//
static char g_zero_data_loc[] =
R"(
00000000: D7B3 0A57 CF02 0000 2000 0000 0000 0000 ...W.... .......
00000010: 67A6 1300 0F06 0000 3D01 0000 4500 0000 g.......=...E...
00000020: 0000 0000 0000 0000 0000 0000 0000 0000 ................
00000030: 0000 0000 0000 0000 0000 0000 0000 0000 ................
)";
TEST_F(CpuReaderParsePagePayloadTest, ZeroLengthDataLoc) {
auto page = PageFromXxd(g_zero_data_loc);
// Hand-build a translation table that handles dpu/tracing_mark_write for this
// test page.
// TODO(rsavitski): look into making these tests less verbose by feeding a
// format string through proto_translation_table to get the format.
std::vector<Field> common_fields;
{ // common_pid
common_fields.emplace_back(Field{});
Field* field = &common_fields.back();
field->ftrace_offset = 4;
field->ftrace_size = 4;
field->ftrace_type = kFtraceCommonPid32;
field->proto_field_id = 2;
field->proto_field_type = ProtoSchemaType::kInt32;
SetTranslationStrategy(field->ftrace_type, field->proto_field_type,
&field->strategy);
}
using Dpu = protos::gen::DpuTracingMarkWriteFtraceEvent;
Event evt{"tracing_mark_write",
"dpu",
{
{8, 1, FtraceFieldType::kFtraceUint8, "type",
Dpu::kTypeFieldNumber, ProtoSchemaType::kUint32,
TranslationStrategy::kInvalidTranslationStrategy},
{12, 4, FtraceFieldType::kFtraceInt32, "pid",
Dpu::kPidFieldNumber, ProtoSchemaType::kInt32,
TranslationStrategy::kInvalidTranslationStrategy},
{16, 4, FtraceFieldType::kFtraceDataLoc, "name",
Dpu::kNameFieldNumber, ProtoSchemaType::kString,
TranslationStrategy::kInvalidTranslationStrategy},
{20, 4, FtraceFieldType::kFtraceInt32, "value",
Dpu::kValueFieldNumber, ProtoSchemaType::kInt32,
TranslationStrategy::kInvalidTranslationStrategy},
},
/*ftrace_event_id=*/1551,
/*proto_field_id=*/348,
/*size=*/24};
for (Field& field : evt.fields) {
SetTranslationStrategy(field.ftrace_type, field.proto_field_type,
&field.strategy);
}
std::vector<Event> events;
events.emplace_back(std::move(evt));
NiceMock<MockFtraceProcfs> mock_ftrace;
PrintkMap printk_formats;
ProtoTranslationTable translation_table(
&mock_ftrace, events, std::move(common_fields),
ProtoTranslationTable::DefaultPageHeaderSpecForTesting(),
InvalidCompactSchedEventFormatForTesting(), printk_formats);
ProtoTranslationTable* table = &translation_table;
FtraceDataSourceConfig ds_config = EmptyConfig();
ds_config.event_filter.AddEnabledEvent(
table->EventToFtraceId(GroupAndName("dpu", "tracing_mark_write")));
FtraceMetadata metadata{};
const uint8_t* parse_pos = page.get();
std::optional<CpuReader::PageHeader> page_header =
CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
const uint8_t* page_end = page.get() + base::GetSysPageSize();
ASSERT_TRUE(page_header.has_value());
EXPECT_FALSE(page_header->lost_events);
EXPECT_LE(parse_pos + page_header->size, page_end);
FtraceParseStatus status = CpuReader::ParsePagePayload(
parse_pos, &page_header.value(), table, &ds_config,
CreateBundler(ds_config), &metadata_, &last_read_event_ts_);
// successfully parsed the whole 32 byte event
ASSERT_EQ(32u, page_header->size);
EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_OK);
auto bundle = GetBundle();
EXPECT_EQ(bundle.event().size(), 1u);
const protos::gen::FtraceEvent& event = bundle.event()[0];
EXPECT_EQ(event.pid(), 317u);
EXPECT_EQ(event.dpu_tracing_mark_write().type(), 69u);
EXPECT_EQ(event.dpu_tracing_mark_write().pid(), 0);
EXPECT_EQ(event.dpu_tracing_mark_write().value(), 0);
EXPECT_EQ(event.dpu_tracing_mark_write().name(), "");
}
static ExamplePage g_zero_padded{
"synthetic",
R"(
00000000: DBF4 87FE F901 0000 F00F 0000 0000 0000 ................
00000010: 0700 0000 0500 0000 EE02 0000 50AA 4C00 ............P.L.
00000020: AEFF FFFF 457C 3633 390A 0000 0000 0000 ....E|639.......
00000030: E939 1300 0500 0000 EE02 0000 50AA 4C00 .9..........P.L.
00000040: AEFF FFFF 427C 3633 397C 6361 6E63 656C ....B|639|cancel
00000050: 2074 696D 6572 0A00 4753 0A00 0500 0000 timer..GS......
00000060: EE02 0000 50AA 4C00 AEFF FFFF 457C 3633 ....P.L.....E|63
00000070: 390A 0000 0000 0000 C929 0800 0500 0000 9........)......
00000080: EE02 0000 50AA 4C00 AEFF FFFF 437C 3633 ....P.L.....C|63
00000090: 397C 5653 594E 432D 6170 707C 310A 0000 9|VSYNC-app|1...
000000A0: 2A48 0600 6500 0101 EE02 0000 6170 7000 *H..e.......app.
000000B0: 6163 6566 6C69 6E67 6572 0000 EF02 0000 aceflinger......
000000C0: 6100 0000 0100 0000 0200 0000 E94D 1900 a............M..
000000D0: 0500 0000 EE02 0000 50AA 4C00 AEFF FFFF ........P.L.....
000000E0: 437C 3633 397C 5653 502D 6D6F 6465 7C30 C|639|VSP-mode|0
000000F0: 0A00 0000 0DD5 0400 0500 0000 EE02 0000 ................
00000100: 50AA 4C00 AEFF FFFF 437C 3633 397C 5653 P.L.....C|639|VS
00000110: 502D 7469 6D65 506F 696E 747C 3231 3733 P-timePoint|2173
00000120: 3235 3939 3337 3132 360A 0000 2DF1 0300 259937126...-...
00000130: 0500 0000 EE02 0000 50AA 4C00 AEFF FFFF ........P.L.....
00000140: 437C 3633 397C 5653 502D 7072 6564 6963 C|639|VSP-predic
00000150: 7469 6F6E 7C32 3137 3332 3736 3230 3036 tion|21732762006
00000160: 3538 0A00 30B0 0600 0500 0000 EE02 0000 58..0...........
00000170: 50AA 4C00 AEFF FFFF 427C 3633 397C 6170 P.L.....B|639|ap
00000180: 7020 616C 6172 6D20 696E 2031 3632 3633 p alarm in 16263
00000190: 7573 3B20 5653 594E 4320 696E 2034 3732 us; VSYNC in 472
000001A0: 3633 7573 0A00 0000 878F 0300 0500 0000 63us............
000001B0: EE02 0000 50AA 4C00 AEFF FFFF 457C 3633 ....P.L.....E|63
000001C0: 390A 0000 0000 0000 3029 1B00 5B00 0102 9.......0)..[...
000001D0: EE02 0000 5469 6D65 7244 6973 7061 7463 ....TimerDispatc
000001E0: 6800 0000 EE02 0000 6100 0000 0100 0000 h.......a.......
000001F0: 0000 0000 7377 6170 7065 722F 3500 0000 ....swapper/5...
00000200: 0000 0000 0000 0000 7800 0000 10DC 4302 ........x.....C.
00000210: 5B00 0102 0000 0000 7377 6170 7065 722F [.......swapper/
00000220: 3500 0000 0000 0000 0000 0000 7800 0000 5...........x...
00000230: 0000 0000 0000 0000 7263 756F 702F 3200 ........rcuop/2.
00000240: 0000 0000 0000 0000 2000 0000 7800 0000 ........ ...x...
00000250: CA71 0B00 6500 0102 2000 0000 7263 755F .q..e... ...rcu_
00000260: 7072 6565 6D70 7400 0000 0000 0B00 0000 preempt.........
00000270: 7800 0000 0100 0000 0300 0000 0859 0100 x............Y..
00000280: 3700 0102 2000 0000 0B00 0000 0000 0000 7... ...........
00000290: 6899 4200 AEFF FFFF 0000 0000 0000 0000 h.B.............
000002A0: 300F 1B00 5B00 0102 2000 0000 7263 756F 0...[... ...rcuo
000002B0: 702F 3200 0000 0000 0000 0000 2000 0000 p/2......... ...
000002C0: 7800 0000 0100 0000 0000 0000 6E64 726F x...........ndro
000002D0: 6964 2E73 7973 7465 6D75 6900 A009 0000 id.systemui.....
000002E0: 7800 0000 17EC 3100 0500 0000 A009 0000 x.....1.........
000002F0: 50AA 4C00 AEFF FFFF 427C 3234 3634 7C61 P.L.....B|2464|a
00000300: 6E64 726F 6964 2E76 6965 772E 4163 6365 ndroid.view.Acce
00000310: 7373 6962 696C 6974 7949 6E74 6572 6163 ssibilityInterac
00000320: 7469 6F6E 436F 6E74 726F 6C6C 6572 2450 tionController$P
00000330: 7269 7661 7465 4861 6E64 6C65 723A 2023 rivateHandler: #
00000340: 320A 0000 8998 EB00 EA02 0000 A009 0000 2...............
00000350: 4AD7 0C00 2697 0500 CE22 0000 0000 0000 J...&...."......
00000360: 0000 0000 0100 0000 1100 0000 CA45 0400 .............E..
00000370: EB02 0000 A009 0000 4AD7 0C00 0000 0000 ........J.......
00000380: A402 0000 0000 0000 0000 0000 0000 0000 ................
00000390: 0000 0000 0000 0000 CA6C 0400 6500 0104 .........l..e...
000003A0: A009 0000 6269 6E64 6572 3A38 3931 305F ....binder:8910_
000003B0: 3400 6F00 3C2C 0000 7800 0000 0100 0000 4.o.<,..x.......
000003C0: 0400 0000 673C 3400 0500 0000 A009 0000 ....g<4.........
000003D0: 50AA 4C00 AEFF FFFF 457C 3234 3634 0A00 P.L.....E|2464..
000003E0: 0000 0000 10EF 2000 5B00 0102 A009 0000 ...... .[.......
000003F0: 6E64 726F 6964 2E73 7973 7465 6D75 6900 ndroid.systemui.
00000400: A009 0000 7800 0000 0100 0000 0000 0000 ....x...........
00000410: 7377 6170 7065 722F 3500 0000 0000 0000 swapper/5.......
00000420: 0000 0000 7800 0000 D098 ED01 5B00 0102 ....x.......[...
00000430: 0000 0000 7377 6170 7065 722F 3500 0000 ....swapper/5...
00000440: 0000 0000 0000 0000 7800 0000 0000 0000 ........x.......
00000450: 0000 0000 6E64 726F 6964 2E73 7973 7465 ....ndroid.syste
00000460: 6D75 6900 A009 0000 7800 0000 F761 1F00 mui.....x....a..
00000470: 0500 0000 A009 0000 50AA 4C00 AEFF FFFF ........P.L.....
00000480: 427C 3234 3634 7C61 6E64 726F 6964 2E76 B|2464|android.v
00000490: 6965 772E 4163 6365 7373 6962 696C 6974 iew.Accessibilit
000004A0: 7949 6E74 6572 6163 7469 6F6E 436F 6E74 yInteractionCont
000004B0: 726F 6C6C 6572 2450 7269 7661 7465 4861 roller$PrivateHa
000004C0: 6E64 6C65 723A 2023 320A 0000 E9F6 A500 ndler: #2.......
000004D0: EA02 0000 A009 0000 4ED7 0C00 2697 0500 ........N...&...
000004E0: CE22 0000 0000 0000 0000 0000 0100 0000 ."..............
000004F0: 1100 0000 4A3F 0400 EB02 0000 A009 0000 ....J?..........
00000500: 4ED7 0C00 0000 0000 2802 0000 0000 0000 N.......(.......
00000510: 0000 0000 0000 0000 0000 0000 0000 0000 ................
00000520: EA93 0400 6500 0104 A009 0000 6269 6E64 ....e.......bind
00000530: 6572 3A38 3931 305F 3400 6F00 3C2C 0000 er:8910_4.o.<,..
00000540: 7800 0000 0100 0000 0000 0000 0AD7 3A01 x.............:.
00000550: 3100 1101 A009 0000 B028 39B1 CCFF FFFF 1........(9.....
00000560: A837 F9A8 ADFF FFFF 0010 39B1 CCFF FFFF .7........9.....
00000570: 2000 0000 FFFF FFFF 44F5 0100 2E00 1101 .......D.......
00000580: A009 0000 B028 39B1 CCFF FFFF AA79 0100 .....(9......y..
00000590: 6500 1102 A009 0000 6B77 6F72 6B65 722F e.......kworker/
000005A0: 7531 363A 3130 0000 6001 0000 7800 0000 u16:10..`...x...
000005B0: 0100 0000 0000 0000 8845 0100 3700 1102 .........E..7...
000005C0: A009 0000 6001 0000 0000 0000 7C51 3800 ....`.......|Q8.
000005D0: AEFF FFFF 0000 0000 0000 0000 89DD 7300 ..............s.
000005E0: EA02 0000 A009 0000 50D7 0C00 2697 0500 ........P...&...
000005F0: CE22 0000 0000 0000 0000 0000 0300 0000 ."..............
00000600: 1100 0000 0AD5 0400 EB02 0000 A009 0000 ................
00000610: 50D7 0C00 0000 0000 A404 0000 0000 0000 P...............
00000620: 0000 0000 0000 0000 0000 0000 0000 0000 ................
00000630: 4A7E 0500 6500 0104 A009 0000 6269 6E64 J~..e.......bind
00000640: 6572 3A38 3931 305F 3400 6F00 3C2C 0000 er:8910_4.o.<,..
00000650: 7800 0000 0100 0000 0000 0000 A790 2E00 x...............
00000660: 0500 0000 A009 0000 50AA 4C00 AEFF FFFF ........P.L.....
00000670: 457C 3234 3634 0A00 0000 0000 9048 2800 E|2464.......H(.
00000680: 5B00 0102 A009 0000 6E64 726F 6964 2E73 [.......ndroid.s
00000690: 7973 7465 6D75 6900 A009 0000 7800 0000 ystemui.....x...
000006A0: 0100 0000 0000 0000 7377 6170 7065 722F ........swapper/
000006B0: 3500 0000 0000 0000 0000 0000 7800 0000 5...........x...
000006C0: B043 2100 5B00 0102 0000 0000 7377 6170 .C!.[.......swap
000006D0: 7065 722F 3500 0000 0000 0000 0000 0000 per/5...........
000006E0: 7800 0000 0000 0000 0000 0000 6269 6E64 x...........bind
000006F0: 6572 3A32 3436 345F 3800 6900 EF0C 0000 er:2464_8.i.....
00000700: 7800 0000 834C 0700 F002 0000 EF0C 0000 x....L..........
00000710: 51D7 0C00 AA4E 5D00 6500 0103 EF0C 0000 Q....N].e.......
00000720: 6E64 726F 6964 2E73 7973 7465 6D75 6900 ndroid.systemui.
00000730: A009 0000 7800 0000 0100 0000 0500 0000 ....x...........
00000740: D05E 6800 5B00 0102 EF0C 0000 6269 6E64 .^h.[.......bind
00000750: 6572 3A32 3436 345F 3800 6900 EF0C 0000 er:2464_8.i.....
00000760: 7800 0000 0100 0000 0000 0000 6269 6E64 x...........bind
00000770: 6572 3A31 3936 375F 4200 0000 A20B 0000 er:1967_B.......
00000780: 7000 0000 67CA 0600 E902 0000 A20B 0000 p...g...........
00000790: AF07 0000 A20B 0000 7000 0000 7800 0000 ........p...x...
000007A0: 7800 0000 B006 3B00 5B00 0102 A20B 0000 x.....;.[.......
000007B0: 6269 6E64 6572 3A31 3936 375F 4200 0000 binder:1967_B...
000007C0: A20B 0000 7800 0000 0100 0000 0000 0000 ....x...........
000007D0: 7377 6170 7065 722F 3500 0000 0000 0000 swapper/5.......
000007E0: 0000 0000 7800 0000 108B 5603 5B00 0102 ....x.....V.[...
000007F0: 0000 0000 7377 6170 7065 722F 3500 0000 ....swapper/5...
00000800: 0000 0000 0000 0000 7800 0000 0000 0000 ........x.......
00000810: 0000 0000 6269 6E64 6572 3A32 3436 345F ....binder:2464_
00000820: 3800 6900 EF0C 0000 7800 0000 831A 0600 8.i.....x.......
00000830: F002 0000 EF0C 0000 56D7 0C00 AAD2 5600 ........V.....V.
00000840: 6500 0103 EF0C 0000 6E64 726F 6964 2E73 e.......ndroid.s
00000850: 7973 7465 6D75 6900 A009 0000 7800 0000 ystemui.....x...
00000860: 0100 0000 0000 0000 B027 4100 5B00 0102 .........'A.[...
00000870: EF0C 0000 6269 6E64 6572 3A32 3436 345F ....binder:2464_
00000880: 3800 6900 EF0C 0000 7800 0000 0100 0000 8.i.....x.......
00000890: 0000 0000 7377 6170 7065 722F 3500 0000 ....swapper/5...
000008A0: 0000 0000 0000 0000 7800 0000 50F4 2A03 ........x...P.*.
000008B0: 5B00 0102 0000 0000 7377 6170 7065 722F [.......swapper/
000008C0: 3500 0000 0000 0000 0000 0000 7800 0000 5...........x...
000008D0: 0000 0000 0000 0000 6269 6E64 6572 3A32 ........binder:2
000008E0: 3436 345F 3800 6900 EF0C 0000 7800 0000 464_8.i.....x...
000008F0: 831A 0600 F002 0000 EF0C 0000 5BD7 0C00 ............[...
00000900: 8A08 5300 6500 0103 EF0C 0000 6E64 726F ..S.e.......ndro
00000910: 6964 2E73 7973 7465 6D75 6900 A009 0000 id.systemui.....
00000920: 7800 0000 0100 0000 0000 0000 B0BE 5000 x.............P.
00000930: 5B00 0102 EF0C 0000 6269 6E64 6572 3A32 [.......binder:2
00000940: 3436 345F 3800 6900 EF0C 0000 7800 0000 464_8.i.....x...
00000950: 0100 0000 0000 0000 7377 6170 7065 722F ........swapper/
00000960: 3500 0000 0000 0000 0000 0000 7800 0000 5...........x...
00000970: 50A1 5A0A 5B00 0102 0000 0000 7377 6170 P.Z.[.......swap
00000980: 7065 722F 3500 0000 0000 0000 0000 0000 per/5...........
00000990: 7800 0000 0000 0000 0000 0000 7263 756F x...........rcuo
000009A0: 702F 3200 0000 0000 0000 0000 2000 0000 p/2......... ...
000009B0: 7800 0000 EA2B 0700 6500 0102 2000 0000 x....+..e... ...
000009C0: 7263 756F 702F 3300 0000 0000 0000 0000 rcuop/3.........
000009D0: 2800 0000 7800 0000 0100 0000 0000 0000 (...x...........
000009E0: 90F9 1B00 5B00 0102 2000 0000 7263 756F ....[... ...rcuo
000009F0: 702F 3200 0000 0000 0000 0000 2000 0000 p/2......... ...
00000A00: 7800 0000 0100 0000 0000 0000 7377 6170 x...........swap
00000A10: 7065 722F 3500 0000 0000 0000 0000 0000 per/5...........
00000A20: 7800 0000 303E D509 5B00 0102 0000 0000 x...0>..[.......
00000A30: 7377 6170 7065 722F 3500 0000 0000 0000 swapper/5.......
00000A40: 0000 0000 7800 0000 0000 0000 0000 0000 ....x...........
00000A50: 6269 6E64 6572 3A32 3436 345F 3800 6900 binder:2464_8.i.
00000A60: EF0C 0000 7800 0000 03AA 0900 F002 0000 ....x...........
00000A70: EF0C 0000 66D7 0C00 EAFE 7F00 6500 0103 ....f.......e...
00000A80: EF0C 0000 5363 7265 656E 4465 636F 7261 ....ScreenDecora
00000A90: 7469 6F00 840B 0000 7800 0000 0100 0000 tio.....x.......
00000AA0: 0200 0000 7028 4A00 5B00 0102 EF0C 0000 ....p(J.[.......
00000AB0: 6269 6E64 6572 3A32 3436 345F 3800 6900 binder:2464_8.i.
00000AC0: EF0C 0000 7800 0000 0100 0000 0000 0000 ....x...........
00000AD0: 7377 6170 7065 722F 3500 0000 0000 0000 swapper/5.......
00000AE0: 0000 0000 7800 0000 908D 0406 5B00 0102 ....x.......[...
00000AF0: 0000 0000 7377 6170 7065 722F 3500 0000 ....swapper/5...
00000B00: 0000 0000 0000 0000 7800 0000 0000 0000 ........x.......
00000B10: 0000 0000 6C6F 6764 2E72 6561 6465 722E ....logd.reader.
00000B20: 7065 7200 5B06 0000 8200 0000 AAE6 2400 per.[.........$.
00000B30: 6500 0102 5B06 0000 6C6F 6763 6174 0000 e...[...logcat..
00000B40: 3000 0000 0000 0000 C105 0000 8200 0000 0...............
00000B50: 0100 0000 0500 0000 90DB 2000 5B00 0102 .......... .[...
00000B60: 5B06 0000 6C6F 6764 2E72 6561 6465 722E [...logd.reader.
00000B70: 7065 7200 5B06 0000 8200 0000 0100 0000 per.[...........
00000B80: 0000 0000 6C6F 6763 6174 0000 3000 0000 ....logcat..0...
00000B90: 0000 0000 C105 0000 8200 0000 7060 6100 ............p`a.
00000BA0: 5B00 0102 C105 0000 6C6F 6763 6174 0000 [.......logcat..
00000BB0: 3000 0000 0000 0000 C105 0000 8200 0000 0...............
00000BC0: 0100 0000 0000 0000 7377 6170 7065 722F ........swapper/
00000BD0: 3500 0000 0000 0000 0000 0000 7800 0000 5...........x...
00000BE0: D086 0202 5B00 0102 0000 0000 7377 6170 ....[.......swap
00000BF0: 7065 722F 3500 0000 0000 0000 0000 0000 per/5...........
00000C00: 7800 0000 0000 0000 0000 0000 6170 7000 x...........app.
00000C10: 6163 6566 6C69 6E67 6572 0000 EF02 0000 aceflinger......
00000C20: 6100 0000 2937 2700 0500 0000 EF02 0000 a...)7'.........
00000C30: 50AA 4C00 AEFF FFFF 437C 3633 397C 5653 P.L.....C|639|VS
00000C40: 502D 6D6F 6465 7C30 0A00 0000 8DC3 0300 P-mode|0........
00000C50: 0500 0000 EF02 0000 50AA 4C00 AEFF FFFF ........P.L.....
00000C60: 437C 3633 397C 5653 502D 7469 6D65 506F C|639|VSP-timePo
00000C70: 696E 747C 3231 3733 3238 3530 3139 3236 int|217328501926
00000C80: 340A 0000 6D43 0200 0500 0000 EF02 0000 4...mC..........
00000C90: 50AA 4C00 AEFF FFFF 437C 3633 397C 5653 P.L.....C|639|VS
00000CA0: 502D 7072 6564 6963 7469 6F6E 7C32 3137 P-prediction|217
00000CB0: 3332 3932 3839 3739 3138 0A00 70FE 0600 3292897918..p...
00000CC0: 0500 0000 EF02 0000 50AA 4C00 AEFF FFFF ........P.L.....
00000CD0: 427C 3633 397C 6170 7020 616C 6172 6D20 B|639|app alarm
00000CE0: 696E 2037 3837 3875 733B 2056 5359 4E43 in 7878us; VSYNC
00000CF0: 2069 6E20 3338 3837 3875 730A 0000 0000 in 38878us.....
00000D00: C7AD 0100 0500 0000 EF02 0000 50AA 4C00 ............P.L.
00000D10: AEFF FFFF 457C 3633 390A 0000 0000 0000 ....E|639.......
00000D20: 3028 2B00 5B00 0102 EF02 0000 6170 7000 0(+.[.......app.
00000D30: 6163 6566 6C69 6E67 6572 0000 EF02 0000 aceflinger......
00000D40: 6100 0000 0100 0000 0000 0000 6C6F 6764 a...........logd
00000D50: 2E72 6561 6465 722E 7065 7200 C611 0000 .reader.per.....
00000D60: 8200 0000 8AE1 1A00 6500 0102 C611 0000 ........e.......
00000D70: 6C6F 6763 6174 002F 3000 0000 0000 0000 logcat./0.......
00000D80: BE11 0000 7800 0000 0100 0000 0400 0000 ....x...........
00000D90: 3074 0D00 5B00 0102 C611 0000 6C6F 6764 0t..[.......logd
00000DA0: 2E72 6561 6465 722E 7065 7200 C611 0000 .reader.per.....
00000DB0: 8200 0000 0001 0000 0000 0000 6C6F 6763 ............logc
00000DC0: 6174 002F 3000 0000 0000 0000 BE11 0000 at./0...........
00000DD0: 7800 0000 4A34 3B00 3100 0101 BE11 0000 x...J4;.1.......
00000DE0: 08D4 FF74 CCFF FFFF 40C9 2900 AEFF FFFF ...t....@.).....
00000DF0: 0044 8940 CBFF FFFF 2000 0000 FFFF FFFF .D.@.... .......
00000E00: A486 0100 2E00 0101 BE11 0000 08D4 FF74 ...............t
00000E10: CCFF FFFF EA17 0100 6500 0102 BE11 0000 ........e.......
00000E20: 6B77 6F72 6B65 722F 7531 363A 3130 0000 kworker/u16:10..
00000E30: 6001 0000 7800 0000 0100 0000 0200 0000 `...x...........
00000E40: E8BC 0000 3700 0102 BE11 0000 6001 0000 ....7.......`...
00000E50: 0000 0000 7C51 3800 AEFF FFFF 0000 0000 ....|Q8.........
00000E60: 0000 0000 B074 1600 5B00 0102 BE11 0000 .....t..[.......
00000E70: 6C6F 6763 6174 002F 3000 0000 0000 0000 logcat./0.......
00000E80: BE11 0000 7800 0000 0100 0000 0000 0000 ....x...........
00000E90: 6C6F 6764 2E72 6561 6465 722E 7065 7200 logd.reader.per.
00000EA0: C611 0000 8200 0000 6AFA 0B00 6500 0102 ........j...e...
00000EB0: C611 0000 6C6F 6763 6174 002F 3000 0000 ....logcat./0...
00000EC0: 0000 0000 BE11 0000 7800 0000 0100 0000 ........x.......
00000ED0: 0500 0000 7023 0800 5B00 0102 C611 0000 ....p#..[.......
00000EE0: 6C6F 6764 2E72 6561 6465 722E 7065 7200 logd.reader.per.
00000EF0: C611 0000 8200 0000 0001 0000 0000 0000 ................
00000F00: 6C6F 6763 6174 002F 3000 0000 0000 0000 logcat./0.......
00000F10: BE11 0000 7800 0000 AA6B 1100 3100 0101 ....x....k..1...
00000F20: BE11 0000 08D4 FF74 CCFF FFFF 40C9 2900 .......t....@.).
00000F30: AEFF FFFF 0044 8940 CBFF FFFF 2000 0000 .....D.@.... ...
00000F40: FFFF FFFF 64EA 0000 2E00 0101 BE11 0000 ....d...........
00000F50: 08D4 FF74 CCFF FFFF EABC 0000 6500 0102 ...t........e...
00000F60: BE11 0000 6B77 6F72 6B65 722F 7531 363A ....kworker/u16:
00000F70: 3130 0000 6001 0000 7800 0000 0100 0000 10..`...x.......
00000F80: 0200 0000 48C3 0000 3700 0102 BE11 0000 ....H...7.......
00000F90: 6001 0000 0000 0000 7C51 3800 AEFF FFFF `.......|Q8.....
00000FA0: 0000 0000 0000 0000 90C4 0F00 5B00 0102 ............[...
00000FB0: BE11 0000 6C6F 6763 6174 002F 3000 0000 ....logcat./0...
00000FC0: 0000 0000 BE11 0000 7800 0000 0100 0000 ........x.......
00000FD0: 0000 0000 6C6F 6764 2E72 6561 6465 722E ....logd.reader.
00000FE0: 7065 7200 C611 0000 8200 0000 0000 0000 per.............
00000FF0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
)",
};
// b/204564312: some (mostly 4.19) kernels rarely emit an invalid page, where
// the header says there's valid data, but the contents are a run of zeros
// (which doesn't decode to valid events per the ring buffer ABI). Confirm that
// the error is reported in the ftrace event bundle.
TEST_F(CpuReaderParsePagePayloadTest, InvalidZeroPaddedPage) {
const ExamplePage* test_case = &g_zero_padded;
ProtoTranslationTable* table = GetTable(test_case->name);
auto page = PageFromXxd(test_case->data);
// Don't need enabled events, as the test checks that we can walk the event
// headers down to the end of the page.
FtraceDataSourceConfig ds_config = EmptyConfig();
const uint8_t* parse_pos = page.get();
std::optional<CpuReader::PageHeader> page_header =
CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
const uint8_t* page_end = page.get() + base::GetSysPageSize();
ASSERT_TRUE(page_header.has_value());
EXPECT_FALSE(page_header->lost_events);
EXPECT_LE(parse_pos + page_header->size, page_end);
FtraceParseStatus status = CpuReader::ParsePagePayload(
parse_pos, &page_header.value(), table, &ds_config,
CreateBundler(ds_config), &metadata_, &last_read_event_ts_);
EXPECT_EQ(0xff0u, page_header->size);
EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_ABI_ZERO_DATA_LENGTH);
EXPECT_THAT(AllTracePackets(), IsEmpty());
}
static ExamplePage g_four_byte_commit{
"synthetic",
R"(
00000000: 105B DA5D C100 0000 0400 0000 0000 0000 .[.]............
00000010: 0000 0000 0000 0000 0000 0000 0000 0000 ................
)",
};
TEST_F(CpuReaderParsePagePayloadTest, InvalidHeaderLength) {
const ExamplePage* test_case = &g_four_byte_commit;
ProtoTranslationTable* table = GetTable(test_case->name);
auto page = PageFromXxd(test_case->data);
FtraceDataSourceConfig ds_config = EmptyConfig();
const uint8_t* parse_pos = page.get();
std::optional<CpuReader::PageHeader> page_header =
CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
const uint8_t* page_end = page.get() + base::GetSysPageSize();
ASSERT_TRUE(page_header.has_value());
EXPECT_FALSE(page_header->lost_events);
EXPECT_LE(parse_pos + page_header->size, page_end);
FtraceParseStatus status = CpuReader::ParsePagePayload(
parse_pos, &page_header.value(), table, &ds_config,
CreateBundler(ds_config), &metadata_, &last_read_event_ts_);
EXPECT_EQ(4u, page_header->size);
EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_ABI_SHORT_DATA_LENGTH);
EXPECT_THAT(AllTracePackets(), IsEmpty());
}
// Kernel code:
// trace_f2fs_truncate_partial_nodes(... nid = {1,2,3}, depth = 4, err = 0)
//
// After kernel commit 0b04d4c0542e("f2fs: Fix
// f2fs_truncate_partial_nodes ftrace event")
static ExamplePage g_f2fs_truncate_partial_nodes_new{
"b281660544_new",
R"(
00000000: 1555 c3e4 cb07 0000 3c00 0000 0000 0000 .U......<.......
00000010: 3e33 0b87 2700 0000 0c00 0000 7d02 0000 >3..'.......}...
00000020: c638 0000 3900 e00f 0000 0000 b165 0000 .8..9........e..
00000030: 0000 0000 0100 0000 0200 0000 0300 0000 ................
00000040: 0400 0000 0000 0000 0000 0000 0000 0000 ................
)",
};
TEST_F(CpuReaderParsePagePayloadTest, F2fsTruncatePartialNodesNew) {
const ExamplePage* test_case = &g_f2fs_truncate_partial_nodes_new;
ProtoTranslationTable* table = GetTable(test_case->name);
auto page = PageFromXxd(test_case->data);
FtraceDataSourceConfig ds_config = EmptyConfig();
ds_config.event_filter.AddEnabledEvent(table->EventToFtraceId(
GroupAndName("f2fs", "f2fs_truncate_partial_nodes")));
const uint8_t* parse_pos = page.get();
std::optional<CpuReader::PageHeader> page_header =
CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
const uint8_t* page_end = page.get() + base::GetSysPageSize();
ASSERT_TRUE(page_header.has_value());
EXPECT_FALSE(page_header->lost_events);
EXPECT_LE(parse_pos + page_header->size, page_end);
FtraceParseStatus status = CpuReader::ParsePagePayload(
parse_pos, &page_header.value(), table, &ds_config,
CreateBundler(ds_config), &metadata_, &last_read_event_ts_);
EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_OK);
auto bundle = GetBundle();
ASSERT_THAT(bundle.event(), SizeIs(1));
auto& event = bundle.event()[0];
EXPECT_EQ(event.f2fs_truncate_partial_nodes().dev(), 65081u);
EXPECT_EQ(event.f2fs_truncate_partial_nodes().ino(), 26033u);
// This field is disabled in ftrace_proto_gen.cc
EXPECT_FALSE(event.f2fs_truncate_partial_nodes().has_nid());
EXPECT_EQ(event.f2fs_truncate_partial_nodes().depth(), 4);
EXPECT_EQ(event.f2fs_truncate_partial_nodes().err(), 0);
}
// Kernel code:
// trace_f2fs_truncate_partial_nodes(... nid = {1,2,3}, depth = 4, err = 0)
//
// Before kernel commit 0b04d4c0542e("f2fs: Fix
// f2fs_truncate_partial_nodes ftrace event")
static ExamplePage g_f2fs_truncate_partial_nodes_old{
"b281660544_old",
R"(
00000000: 8f90 aa0d 9e00 0000 3c00 0000 0000 0000 ........<.......
00000010: 3e97 0295 0e01 0000 0c00 0000 7d02 0000 >...........}...
00000020: 8021 0000 3900 e00f 0000 0000 0d66 0000 .!..9........f..
00000030: 0000 0000 0100 0000 0200 0000 0300 0000 ................
00000040: 0400 0000 0000 0000 0000 0000 0000 0000 ................
)",
};
TEST_F(CpuReaderParsePagePayloadTest, F2fsTruncatePartialNodesOld) {
const ExamplePage* test_case = &g_f2fs_truncate_partial_nodes_old;
ProtoTranslationTable* table = GetTable(test_case->name);
auto page = PageFromXxd(test_case->data);
FtraceDataSourceConfig ds_config = EmptyConfig();
auto id = table->EventToFtraceId(
GroupAndName("f2fs", "f2fs_truncate_partial_nodes"));
PERFETTO_LOG("Enabling: %zu", id);
ds_config.event_filter.AddEnabledEvent(id);
const uint8_t* parse_pos = page.get();
std::optional<CpuReader::PageHeader> page_header =
CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
const uint8_t* page_end = page.get() + base::GetSysPageSize();
ASSERT_TRUE(page_header.has_value());
EXPECT_FALSE(page_header->lost_events);
EXPECT_LE(parse_pos + page_header->size, page_end);
FtraceParseStatus status = CpuReader::ParsePagePayload(
parse_pos, &page_header.value(), table, &ds_config,
CreateBundler(ds_config), &metadata_, &last_read_event_ts_);
EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_OK);
auto bundle = GetBundle();
ASSERT_THAT(bundle.event(), SizeIs(1));
auto& event = bundle.event()[0];
EXPECT_EQ(event.f2fs_truncate_partial_nodes().dev(), 65081u);
EXPECT_EQ(event.f2fs_truncate_partial_nodes().ino(), 26125u);
// This field is disabled in ftrace_proto_gen.cc
EXPECT_FALSE(event.f2fs_truncate_partial_nodes().has_nid());
// Due to a kernel bug, nid[1] is parsed as depth.
EXPECT_EQ(event.f2fs_truncate_partial_nodes().depth(), 2);
// Due to a kernel bug, nid[2] is parsed as err.
EXPECT_EQ(event.f2fs_truncate_partial_nodes().err(), 3);
}
// one print
char g_last_ts_test_page_0[] = R"(
00000000: cd79 fb3a 2fa4 0400 2c00 0000 0000 0000 .y.:/...,.......
00000010: 7eb6 e5eb 8f11 0000 0800 0000 0500 0000 ~...............
00000020: 1e83 1400 42ab e0af ffff ffff 6669 7273 ....B.......firs
00000030: 745f 7072 696e 740a 0000 0000 0000 0000 t_print.........
)";
// one print
char g_last_ts_test_page_1[] = R"(
00000000: 3c11 d579 99a5 0400 2c00 0000 0000 0000 <..y....,.......
00000010: 3ed1 6315 3701 0000 0800 0000 0500 0000 >.c.7...........
00000020: 9e8c 1400 42ab e0af ffff ffff 7365 636f ....B.......seco
00000030: 6e64 5f70 7269 6e74 0a00 0000 0000 0000 nd_print........
)";
// data loss marker ("since last read") + multiple sched_switch + one print
char g_last_ts_test_page_2[] = R"(
00000000: 8ac6 cb70 a8a5 0400 4c02 0080 ffff ffff ...p....L.......
00000010: 1000 0000 4701 0102 01b1 0f00 636f 6465 ....G.......code
00000020: 0000 0000 0000 0000 0000 0000 01b1 0f00 ................
00000030: 7800 0000 0100 0000 0000 0000 7377 6170 x...........swap
00000040: 7065 722f 3000 0000 0000 0000 0000 0000 per/0...........
00000050: 7800 0000 b0e3 f602 4701 0102 0000 0000 x.......G.......
00000060: 7377 6170 7065 722f 3000 0000 0000 0000 swapper/0.......
00000070: 0000 0000 7800 0000 0000 0000 0000 0000 ....x...........
00000080: 6b77 6f72 6b65 722f 303a 3500 0000 0000 kworker/0:5.....
00000090: ac85 1400 7800 0000 1002 0300 4701 0102 ....x.......G...
000000a0: ac85 1400 6b77 6f72 6b65 722f 303a 3500 ....kworker/0:5.
000000b0: 0000 0000 ac85 1400 7800 0000 8000 0000 ........x.......
000000c0: 0000 0000 7377 6170 7065 722f 3000 0000 ....swapper/0...
000000d0: 0000 0000 0000 0000 7800 0000 f086 7106 ........x.....q.
000000e0: 4701 0102 0000 0000 7377 6170 7065 722f G.......swapper/
000000f0: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
00000100: 0000 0000 0000 0000 6f62 6e6f 2d64 6573 ........obno-des
00000110: 6b74 6f70 2d6e 6f00 d513 0000 7800 0000 ktop-no.....x...
00000120: 3013 1000 4701 0102 d513 0000 6f62 6e6f 0...G.......obno
00000130: 2d64 6573 6b74 6f70 2d6e 6f00 d513 0000 -desktop-no.....
00000140: 7800 0000 0100 0000 0000 0000 7377 6170 x...........swap
00000150: 7065 722f 3000 0000 0000 0000 0000 0000 per/0...........
00000160: 7800 0000 10b0 2703 4701 0102 0000 0000 x.....'.G.......
00000170: 7377 6170 7065 722f 3000 0000 0000 0000 swapper/0.......
00000180: 0000 0000 7800 0000 0000 0000 0000 0000 ....x...........
00000190: 6b77 6f72 6b65 722f 303a 3500 0000 0000 kworker/0:5.....
000001a0: ac85 1400 7800 0000 70e7 0200 4701 0102 ....x...p...G...
000001b0: ac85 1400 6b77 6f72 6b65 722f 303a 3500 ....kworker/0:5.
000001c0: 0000 0000 ac85 1400 7800 0000 8000 0000 ........x.......
000001d0: 0000 0000 6b73 6f66 7469 7271 642f 3000 ....ksoftirqd/0.
000001e0: 0000 0000 0f00 0000 7800 0000 10a4 0200 ........x.......
000001f0: 4701 0102 0f00 0000 6b73 6f66 7469 7271 G.......ksoftirq
00000200: 642f 3000 0000 0000 0f00 0000 7800 0000 d/0.........x...
00000210: 0100 0000 0000 0000 7377 6170 7065 722f ........swapper/
00000220: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
00000230: fef2 0a4d 7500 0000 0800 0000 0500 0000 ...Mu...........
00000240: 1a8d 1400 42ab e0af ffff ffff 7468 6972 ....B.......thir
00000250: 645f 7072 696e 740a 0000 0000 0000 0000 d_print.........
)";
// Tests that |previous_bundle_end_timestamp| is correctly updated in cases
// where a single ProcessPagesForDataSource call produces multiple ftrace bundle
// packets (due to splitting on data loss markers).
TEST(CpuReaderTest, LastReadEventTimestampWithSplitBundles) {
// build test buffer with 3 pages
ProtoTranslationTable* table = GetTable("synthetic");
std::vector<std::unique_ptr<uint8_t[]>> test_pages;
test_pages.emplace_back(PageFromXxd(g_last_ts_test_page_0));
test_pages.emplace_back(PageFromXxd(g_last_ts_test_page_1));
test_pages.emplace_back(PageFromXxd(g_last_ts_test_page_2));
size_t num_pages = test_pages.size();
size_t page_sz = base::GetSysPageSize();
auto buf = std::make_unique<uint8_t[]>(page_sz * num_pages);
for (size_t i = 0; i < num_pages; i++) {
void* dest = buf.get() + (i * page_sz);
memcpy(dest, static_cast<const void*>(test_pages[i].get()), page_sz);
}
// build cfg requesting ftrace/print
auto compact_sched_buf = std::make_unique<CompactSchedBuffer>();
FtraceMetadata metadata{};
FtraceDataSourceConfig ftrace_cfg = EmptyConfig();
ftrace_cfg.event_filter.AddEnabledEvent(
table->EventToFtraceId(GroupAndName("ftrace", "print")));
// invoke ProcessPagesForDataSource
TraceWriterForTesting trace_writer;
base::FlatSet<protos::pbzero::FtraceParseStatus> parse_errors;
uint64_t last_read_event_ts = 0;
bool success = CpuReader::ProcessPagesForDataSource(
&trace_writer, &metadata, /*cpu=*/0, &ftrace_cfg, &parse_errors,
&last_read_event_ts, buf.get(), num_pages, compact_sched_buf.get(), table,
/*symbolizer=*/nullptr,
/*ftrace_clock_snapshot=*/nullptr,
protos::pbzero::FTRACE_CLOCK_UNSPECIFIED);
EXPECT_TRUE(success);
// We've read three pages, one print event on each. There is a data loss
// marker on the third page, indicating that the kernel overwrote events
// between 2nd and 3rd page (imagine our daemon getting cpu starved between
// those reads).
//
// Therefore we expect two bundles, as we start a new one whenever we
// encounter data loss (to set the |lost_events| field in the bundle proto).
//
// In terms of |previous_bundle_end_timestamp|, the first bundle will emit
// zero since that's our initial input. The second bundle needs to emit the
// timestamp of the last event in the first bundle.
auto packets = trace_writer.GetAllTracePackets();
ASSERT_EQ(2u, packets.size());
// 2 prints
auto const& first_bundle = packets[0].ftrace_events();
EXPECT_FALSE(first_bundle.lost_events());
ASSERT_EQ(2u, first_bundle.event().size());
EXPECT_TRUE(first_bundle.has_previous_bundle_end_timestamp());
EXPECT_EQ(0u, first_bundle.previous_bundle_end_timestamp());
const uint64_t kSecondPrintTs = 1308020252356549ULL;
EXPECT_EQ(kSecondPrintTs, first_bundle.event()[1].timestamp());
EXPECT_EQ(0u, first_bundle.previous_bundle_end_timestamp());
// 1 print + lost_events + updated previous_bundle_end_timestamp
auto const& second_bundle = packets[1].ftrace_events();
EXPECT_TRUE(second_bundle.lost_events());
EXPECT_EQ(1u, second_bundle.event().size());
EXPECT_EQ(kSecondPrintTs, second_bundle.previous_bundle_end_timestamp());
}
} // namespace
} // namespace perfetto