1 /*
2 * Copyright (C) 2017 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "src/traced/probes/ftrace/cpu_reader.h"
18
19 #include <string.h>
20 #include <sys/stat.h>
21 #include <sys/syscall.h>
22
23 #include "perfetto/base/build_config.h"
24 #include "perfetto/ext/base/utils.h"
25 #include "perfetto/protozero/proto_utils.h"
26 #include "perfetto/protozero/scattered_heap_buffer.h"
27 #include "perfetto/protozero/scattered_stream_writer.h"
28 #include "src/traced/probes/ftrace/event_info.h"
29 #include "src/traced/probes/ftrace/ftrace_config_muxer.h"
30 #include "src/traced/probes/ftrace/ftrace_procfs.h"
31 #include "src/traced/probes/ftrace/proto_translation_table.h"
32 #include "src/traced/probes/ftrace/test/cpu_reader_support.h"
33 #include "src/tracing/core/trace_writer_for_testing.h"
34 #include "test/gtest_and_gmock.h"
35
36 #include "protos/perfetto/trace/ftrace/dpu.gen.h"
37 #include "protos/perfetto/trace/ftrace/f2fs.gen.h"
38 #include "protos/perfetto/trace/ftrace/ftrace.gen.h"
39 #include "protos/perfetto/trace/ftrace/ftrace_event.gen.h"
40 #include "protos/perfetto/trace/ftrace/ftrace_event.pbzero.h"
41 #include "protos/perfetto/trace/ftrace/ftrace_event_bundle.gen.h"
42 #include "protos/perfetto/trace/ftrace/ftrace_event_bundle.pbzero.h"
43 #include "protos/perfetto/trace/ftrace/ftrace_stats.gen.h"
44 #include "protos/perfetto/trace/ftrace/ftrace_stats.pbzero.h"
45 #include "protos/perfetto/trace/ftrace/power.gen.h"
46 #include "protos/perfetto/trace/ftrace/raw_syscalls.gen.h"
47 #include "protos/perfetto/trace/ftrace/sched.gen.h"
48 #include "protos/perfetto/trace/ftrace/task.gen.h"
49 #include "protos/perfetto/trace/trace_packet.gen.h"
50 #include "src/traced/probes/ftrace/test/test_messages.gen.h"
51 #include "src/traced/probes/ftrace/test/test_messages.pbzero.h"
52
53 using protozero::proto_utils::ProtoSchemaType;
54 using testing::_;
55 using testing::AnyNumber;
56 using testing::Contains;
57 using testing::Each;
58 using testing::ElementsAre;
59 using testing::ElementsAreArray;
60 using testing::EndsWith;
61 using testing::Eq;
62 using testing::IsEmpty;
63 using testing::NiceMock;
64 using testing::Not;
65 using testing::Pair;
66 using testing::Property;
67 using testing::Return;
68 using testing::SizeIs;
69 using testing::StartsWith;
70
71 namespace perfetto {
72 namespace {
73
74 using FtraceParseStatus = protos::pbzero::FtraceParseStatus;
75
EmptyConfig()76 FtraceDataSourceConfig EmptyConfig() {
77 return FtraceDataSourceConfig{EventFilter{},
78 EventFilter{},
79 DisabledCompactSchedConfigForTesting(),
80 std::nullopt,
81 {},
82 {},
83 false /*symbolize_ksyms*/,
84 50u,
85 {}};
86 }
87
88 constexpr uint64_t kNanoInSecond = 1000 * 1000 * 1000;
89 constexpr uint64_t kNanoInMicro = 1000;
90
WithinOneMicrosecond(uint64_t actual_ns,uint64_t expected_s,uint64_t expected_us)91 ::testing::AssertionResult WithinOneMicrosecond(uint64_t actual_ns,
92 uint64_t expected_s,
93 uint64_t expected_us) {
94 // Round to closest us.
95 uint64_t actual_us = (actual_ns + kNanoInMicro / 2) / kNanoInMicro;
96 uint64_t total_expected_us = expected_s * 1000 * 1000 + expected_us;
97 if (actual_us == total_expected_us)
98 return ::testing::AssertionSuccess();
99
100 return ::testing::AssertionFailure()
101 << actual_ns / kNanoInSecond << "."
102 << (actual_ns % kNanoInSecond) / kNanoInMicro << " vs. " << expected_s
103 << "." << expected_us;
104 }
105
106 class MockFtraceProcfs : public FtraceProcfs {
107 public:
MockFtraceProcfs()108 MockFtraceProcfs() : FtraceProcfs("/root/") {
109 ON_CALL(*this, NumberOfCpus()).WillByDefault(Return(1));
110 ON_CALL(*this, WriteToFile(_, _)).WillByDefault(Return(true));
111 ON_CALL(*this, ClearFile(_)).WillByDefault(Return(true));
112 EXPECT_CALL(*this, NumberOfCpus()).Times(AnyNumber());
113 }
114
115 MOCK_METHOD(bool,
116 WriteToFile,
117 (const std::string& path, const std::string& str),
118 (override));
119 MOCK_METHOD(char, ReadOneCharFromFile, (const std::string& path), (override));
120 MOCK_METHOD(bool, ClearFile, (const std::string& path), (override));
121 MOCK_METHOD(std::string,
122 ReadFileIntoString,
123 (const std::string& path),
124 (const, override));
125 MOCK_METHOD(size_t, NumberOfCpus, (), (const, override));
126 };
127
128 class CpuReaderTableTest : public ::testing::Test {
129 protected:
130 NiceMock<MockFtraceProcfs> ftrace_;
131 };
132
133 // Single class to manage the whole protozero -> scattered stream -> chunks ->
134 // single buffer -> real proto dance. Has a method: writer() to get an
135 // protozero ftrace bundle writer and a method ParseProto() to attempt to
136 // parse whatever has been written so far into a proto message.
137 template <class ZeroT, class ProtoT>
138 class ProtoProvider {
139 public:
ProtoProvider(size_t chunk_size)140 explicit ProtoProvider(size_t chunk_size) : chunk_size_(chunk_size) {}
141 ~ProtoProvider() = default;
142
writer()143 ZeroT* writer() { return writer_.get(); }
ResetWriter()144 void ResetWriter() { writer_.Reset(); }
145
146 // Stitch together the scattered chunks into a single buffer then attempt
147 // to parse the buffer as a FtraceEventBundle. Returns the FtraceEventBundle
148 // on success and nullptr on failure.
ParseProto()149 std::unique_ptr<ProtoT> ParseProto() {
150 auto bundle = std::make_unique<ProtoT>();
151 std::vector<uint8_t> buffer = writer_.SerializeAsArray();
152 if (!bundle->ParseFromArray(buffer.data(), buffer.size()))
153 return nullptr;
154 return bundle;
155 }
156
157 private:
158 ProtoProvider(const ProtoProvider&) = delete;
159 ProtoProvider& operator=(const ProtoProvider&) = delete;
160
161 size_t chunk_size_;
162 protozero::HeapBuffered<ZeroT> writer_;
163 };
164
165 using BundleProvider = ProtoProvider<protos::pbzero::FtraceEventBundle,
166 protos::gen::FtraceEventBundle>;
167
168 class BinaryWriter {
169 public:
BinaryWriter()170 BinaryWriter()
171 : size_(base::GetSysPageSize()),
172 page_(new uint8_t[size_]),
173 ptr_(page_.get()) {}
174
175 template <typename T>
Write(T t)176 void Write(T t) {
177 memcpy(ptr_, &t, sizeof(T));
178 ptr_ += sizeof(T);
179 PERFETTO_CHECK(ptr_ < ptr_ + size_);
180 }
181
WriteFixedString(size_t n,const char * s)182 void WriteFixedString(size_t n, const char* s) {
183 size_t length = strlen(s);
184 PERFETTO_CHECK(length < n);
185 char c;
186 while ((c = *s++)) {
187 Write<char>(c);
188 }
189 Write<char>('\0');
190 for (size_t i = 0; i < n - length - 1; i++) {
191 Write<char>('\xff');
192 }
193 }
194
GetCopy()195 std::unique_ptr<uint8_t[]> GetCopy() {
196 std::unique_ptr<uint8_t[]> buffer(new uint8_t[written()]);
197 memcpy(buffer.get(), page_.get(), written());
198 return buffer;
199 }
200
written()201 size_t written() { return static_cast<size_t>(ptr_ - page_.get()); }
202
203 private:
204 size_t size_;
205 std::unique_ptr<uint8_t[]> page_;
206 uint8_t* ptr_;
207 };
208
TEST(PageFromXxdTest,OneLine)209 TEST(PageFromXxdTest, OneLine) {
210 std::string text = R"(
211 00000000: 0000 0000 0000 0000 0000 0000 0000 0000 ................
212 00000000: 0000 0000 5600 0000 0000 0000 0000 0000 ................
213 )";
214 auto page = PageFromXxd(text);
215 EXPECT_EQ(page.get()[0x14], 0x56);
216 }
217
TEST(PageFromXxdTest,ManyLines)218 TEST(PageFromXxdTest, ManyLines) {
219 std::string text = R"(
220 00000000: 1234 0000 0000 0000 0000 0000 0000 0056 ................
221 00000010: 7800 0000 0000 0000 0000 0000 0000 009a ................
222 00000020: 0000 0000 bc00 0000 00de 0000 0000 009a ................
223 )";
224 auto page = PageFromXxd(text);
225 EXPECT_EQ(page.get()[0x00], 0x12);
226 EXPECT_EQ(page.get()[0x01], 0x34);
227 EXPECT_EQ(page.get()[0x0f], 0x56);
228 EXPECT_EQ(page.get()[0x10], 0x78);
229 EXPECT_EQ(page.get()[0x1f], 0x9a);
230 EXPECT_EQ(page.get()[0x24], 0xbc);
231 EXPECT_EQ(page.get()[0x29], 0xde);
232 }
233
TEST(CpuReaderTest,BinaryWriter)234 TEST(CpuReaderTest, BinaryWriter) {
235 BinaryWriter writer;
236 writer.Write<uint64_t>(1);
237 writer.Write<uint32_t>(2);
238 writer.Write<uint16_t>(3);
239 writer.Write<uint8_t>(4);
240 auto buffer = writer.GetCopy();
241 EXPECT_EQ(buffer.get()[0], 1);
242 EXPECT_EQ(buffer.get()[1], 0);
243 EXPECT_EQ(buffer.get()[2], 0);
244 EXPECT_EQ(buffer.get()[3], 0);
245 EXPECT_EQ(buffer.get()[4], 0);
246 EXPECT_EQ(buffer.get()[5], 0);
247 EXPECT_EQ(buffer.get()[6], 0);
248 EXPECT_EQ(buffer.get()[7], 0);
249 EXPECT_EQ(buffer.get()[8], 2);
250 }
251
TEST(ReadAndAdvanceTest,Number)252 TEST(ReadAndAdvanceTest, Number) {
253 uint64_t expected = 42;
254 uint64_t actual = 0;
255 uint8_t buffer[8] = {};
256 const uint8_t* start = buffer;
257 const uint8_t* ptr = buffer;
258 memcpy(&buffer, &expected, 8);
259 EXPECT_TRUE(CpuReader::ReadAndAdvance<uint64_t>(&ptr, ptr + 8, &actual));
260 EXPECT_EQ(ptr, start + 8);
261 EXPECT_EQ(actual, expected);
262 }
263
TEST(ReadAndAdvanceTest,PlainStruct)264 TEST(ReadAndAdvanceTest, PlainStruct) {
265 struct PlainStruct {
266 uint64_t timestamp;
267 uint64_t length;
268 };
269
270 uint64_t expected[2] = {42, 999};
271 PlainStruct actual;
272 uint8_t buffer[16] = {};
273 const uint8_t* start = buffer;
274 const uint8_t* ptr = buffer;
275 memcpy(&buffer, &expected, 16);
276 EXPECT_TRUE(CpuReader::ReadAndAdvance<PlainStruct>(&ptr, ptr + 16, &actual));
277 EXPECT_EQ(ptr, start + 16);
278 EXPECT_EQ(actual.timestamp, 42ul);
279 EXPECT_EQ(actual.length, 999ul);
280 }
281
TEST(ReadAndAdvanceTest,ComplexStruct)282 TEST(ReadAndAdvanceTest, ComplexStruct) {
283 struct ComplexStruct {
284 uint64_t timestamp;
285 uint32_t length;
286 uint32_t : 24;
287 uint32_t overwrite : 8;
288 };
289
290 uint64_t expected[2] = {42, 0xcdffffffabababab};
291 ComplexStruct actual = {};
292 uint8_t buffer[16] = {};
293 const uint8_t* start = buffer;
294 const uint8_t* ptr = buffer;
295 memcpy(&buffer, &expected, 16);
296 EXPECT_TRUE(
297 CpuReader::ReadAndAdvance<ComplexStruct>(&ptr, ptr + 16, &actual));
298 EXPECT_EQ(ptr, start + 16);
299 EXPECT_EQ(actual.timestamp, 42ul);
300 EXPECT_EQ(actual.length, 0xabababab);
301 EXPECT_EQ(actual.overwrite, 0xCDu);
302 }
303
TEST(ReadAndAdvanceTest,Overruns)304 TEST(ReadAndAdvanceTest, Overruns) {
305 uint64_t result = 42;
306 uint8_t buffer[7] = {};
307 const uint8_t* start = buffer;
308 const uint8_t* ptr = buffer;
309 EXPECT_FALSE(CpuReader::ReadAndAdvance<uint64_t>(&ptr, ptr + 7, &result));
310 EXPECT_EQ(ptr, start);
311 EXPECT_EQ(result, 42ul);
312 }
313
TEST(ReadAndAdvanceTest,AtEnd)314 TEST(ReadAndAdvanceTest, AtEnd) {
315 uint8_t result = 42;
316 uint8_t buffer[8] = {};
317 const uint8_t* start = buffer;
318 const uint8_t* ptr = buffer;
319 EXPECT_FALSE(CpuReader::ReadAndAdvance<uint8_t>(&ptr, ptr, &result));
320 EXPECT_EQ(ptr, start);
321 EXPECT_EQ(result, 42);
322 }
323
TEST(ReadAndAdvanceTest,Underruns)324 TEST(ReadAndAdvanceTest, Underruns) {
325 uint64_t expected = 42;
326 uint64_t actual = 0;
327 uint8_t buffer[9] = {};
328 const uint8_t* start = buffer;
329 const uint8_t* ptr = buffer;
330 memcpy(&buffer, &expected, 8);
331 EXPECT_TRUE(CpuReader::ReadAndAdvance<uint64_t>(&ptr, ptr + 8, &actual));
332 EXPECT_EQ(ptr, start + 8);
333 EXPECT_EQ(actual, expected);
334 }
335
TEST(ParsePageHeaderTest,WithOverrun)336 TEST(ParsePageHeaderTest, WithOverrun) {
337 std::string text = R"(
338 00000000: 3ef3 db77 67a2 0100 f00f 0080 ffff ffff
339 )";
340 auto page = PageFromXxd(text);
341
342 // parse as if we're on a 32 bit kernel (4 byte "commit" field)
343 {
344 const uint8_t* ptr = page.get();
345 auto ret = CpuReader::ParsePageHeader(&ptr, 4u);
346 ASSERT_TRUE(ret.has_value());
347 CpuReader::PageHeader parsed = ret.value();
348
349 ASSERT_EQ(parsed.timestamp, 0x0001A26777DBF33Eull); // first 8 bytes
350 ASSERT_EQ(parsed.size, 0x0ff0u); // 4080
351 ASSERT_TRUE(parsed.lost_events);
352
353 // pointer advanced past the header (8+4 bytes)
354 ASSERT_EQ(ptr, page.get() + 12);
355 }
356
357 // parse as if we're on a 64 bit kernel (8 byte "commit" field)
358 {
359 const uint8_t* ptr = page.get();
360 auto ret = CpuReader::ParsePageHeader(&ptr, 8u);
361 ASSERT_TRUE(ret.has_value());
362 CpuReader::PageHeader parsed = ret.value();
363
364 ASSERT_EQ(parsed.timestamp, 0x0001A26777DBF33Eull); // first 8 bytes
365 ASSERT_EQ(parsed.size, 0x0ff0u); // 4080
366 ASSERT_TRUE(parsed.lost_events);
367
368 // pointer advanced past the header (8+8 bytes)
369 ASSERT_EQ(ptr, page.get() + 16);
370 }
371 }
372
373 // clang-format off
374 // # tracer: nop
375 // #
376 // # entries-in-buffer/entries-written: 1/1 #P:8
377 // #
378 // # _-----=> irqs-off
379 // # / _----=> need-resched
380 // # | / _---=> hardirq/softirq
381 // # || / _--=> preempt-depth
382 // # ||| / delay
383 // # TASK-PID CPU# |||| TIMESTAMP FUNCTION
384 // # | | | |||| | |
385 // sh-28712 [000] ...1 608934.535199: tracing_mark_write: Hello, world!
386 // clang-format on
387
388 static ExamplePage g_single_print{
389 "synthetic",
390 R"(
391 00000000: ba12 6a33 c628 0200 2c00 0000 0000 0000 ..j3.(..,.......
392 00000010: def0 ec67 8d21 0000 0800 0000 0500 0001 ...g.!..........
393 00000020: 2870 0000 ac5d 1661 86ff ffff 4865 6c6c (p...].a....Hell
394 00000030: 6f2c 2077 6f72 6c64 210a 00ff 0000 0000 o, world!.......
395 )",
396 };
397
398 class CpuReaderParsePagePayloadTest : public testing::Test {
399 protected:
CreateBundler(const FtraceDataSourceConfig & ds_config)400 CpuReader::Bundler* CreateBundler(const FtraceDataSourceConfig& ds_config) {
401 PERFETTO_CHECK(!bundler_.has_value());
402 writer_.emplace();
403 compact_sched_buf_ = std::make_unique<CompactSchedBuffer>();
404 bundler_.emplace(&writer_.value(), &metadata_, /*symbolizer=*/nullptr,
405 /*cpu=*/0,
406 /*ftrace_clock_snapshot=*/nullptr,
407 protos::pbzero::FTRACE_CLOCK_UNSPECIFIED,
408 compact_sched_buf_.get(), ds_config.compact_sched.enabled,
409 /*last_read_event_ts=*/0);
410 return &bundler_.value();
411 }
412
GetBundle()413 protos::gen::FtraceEventBundle GetBundle() {
414 PERFETTO_CHECK(bundler_.has_value());
415 PERFETTO_CHECK(writer_.has_value());
416 bundler_.reset();
417 protos::gen::FtraceEventBundle bundle =
418 writer_->GetOnlyTracePacket().ftrace_events();
419 writer_.reset();
420 return bundle;
421 }
422
AllTracePackets()423 std::vector<protos::gen::TracePacket> AllTracePackets() {
424 PERFETTO_CHECK(bundler_.has_value());
425 PERFETTO_CHECK(writer_.has_value());
426 bundler_.reset();
427 std::vector<protos::gen::TracePacket> packets =
428 writer_->GetAllTracePackets();
429 writer_.reset();
430 return packets;
431 }
432
433 FtraceMetadata metadata_;
434 std::optional<TraceWriterForTesting> writer_;
435 std::unique_ptr<CompactSchedBuffer> compact_sched_buf_;
436 std::optional<CpuReader::Bundler> bundler_;
437 uint64_t last_read_event_ts_ = 0;
438 };
439
TEST_F(CpuReaderParsePagePayloadTest,ParseSinglePrint)440 TEST_F(CpuReaderParsePagePayloadTest, ParseSinglePrint) {
441 const ExamplePage* test_case = &g_single_print;
442
443 ProtoTranslationTable* table = GetTable(test_case->name);
444 auto page = PageFromXxd(test_case->data);
445
446 FtraceDataSourceConfig ds_config = EmptyConfig();
447 ds_config.event_filter.AddEnabledEvent(
448 table->EventToFtraceId(GroupAndName("ftrace", "print")));
449
450 const uint8_t* parse_pos = page.get();
451 std::optional<CpuReader::PageHeader> page_header =
452 CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
453
454 const uint8_t* page_end = page.get() + base::GetSysPageSize();
455 ASSERT_TRUE(page_header.has_value());
456 EXPECT_EQ(44ul, page_header->size);
457 EXPECT_FALSE(page_header->lost_events);
458 EXPECT_LE(parse_pos + page_header->size, page_end);
459
460 FtraceParseStatus status = CpuReader::ParsePagePayload(
461 parse_pos, &page_header.value(), table, &ds_config,
462 CreateBundler(ds_config), &metadata_, &last_read_event_ts_);
463
464 EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_OK);
465
466 auto bundle = GetBundle();
467 ASSERT_EQ(bundle.event().size(), 1u);
468 const protos::gen::FtraceEvent& event = bundle.event()[0];
469 EXPECT_EQ(event.pid(), 28712ul);
470 EXPECT_TRUE(WithinOneMicrosecond(event.timestamp(), 608934, 535199));
471 EXPECT_EQ(event.print().buf(), "Hello, world!\n");
472 }
473
474 // clang-format off
475 // # tracer: nop
476 // #
477 // # entries-in-buffer/entries-written: 2/2 #P:8
478 // #
479 // # _-----=> irqs-off
480 // # / _----=> need-resched
481 // # | / _---=> hardirq/softirq
482 // # || / _--=> preempt-depth
483 // # ||| / delay
484 // # TASK-PID TGID CPU# |||| TIMESTAMP FUNCTION
485 // # | | | | |||| | |
486 // echo-6908 ( 6908) [000] ...1 282762.884473: tracing_mark_write: qwertyuiopqwrtyuiopqwertyuiopqwertyuiopqwer[...]
487 // echo-6908 ( 6908) [000] ...1 282762.884492: tracing_mark_write:
488 // clang-format on
489
490 static ExamplePage g_really_long_event{
491 "synthetic",
492 R"(
493 00000000: 6be0 48dd 2b01 0100 e403 0000 0000 0000 k.H.+...........
494 00000010: 1e00 0000 0000 0000 0000 0000 c003 0000 ................
495 00000020: 0500 0001 fc1a 0000 4096 3615 9cff ffff ........@.6.....
496 00000030: 7177 6572 7479 7569 6f70 7177 7274 7975 qwertyuiopqwrtyu
497 00000040: 696f 7071 7765 7274 7975 696f 7071 7765 iopqwertyuiopqwe
498 00000050: 7274 7975 696f 7071 7765 7274 7975 696f rtyuiopqwertyuio
499 00000060: 7071 7772 7479 7569 6f70 7177 6572 7479 pqwrtyuiopqwerty
500 00000070: 7569 6f70 7177 6572 7479 7569 6f71 7765 uiopqwertyuioqwe
501 00000080: 7274 7975 696f 7071 7772 7479 7569 6f70 rtyuiopqwrtyuiop
502 00000090: 7177 6572 7479 7569 6f70 7177 6572 7479 qwertyuiopqwerty
503 000000a0: 7569 6f71 7765 7274 7975 696f 7071 7772 uioqwertyuiopqwr
504 000000b0: 7479 7569 6f70 7177 6572 7479 7569 6f70 tyuiopqwertyuiop
505 000000c0: 7177 6572 7479 7569 6f70 7070 7177 6572 qwertyuiopppqwer
506 000000d0: 7479 7569 6f70 7177 7274 7975 696f 7071 tyuiopqwrtyuiopq
507 000000e0: 7765 7274 7975 696f 7071 7765 7274 7975 wertyuiopqwertyu
508 000000f0: 696f 7071 7765 7274 7975 696f 7071 7772 iopqwertyuiopqwr
509 00000100: 7479 7569 6f70 7177 6572 7479 7569 6f70 tyuiopqwertyuiop
510 00000110: 7177 6572 7479 7569 6f71 7765 7274 7975 qwertyuioqwertyu
511 00000120: 696f 7071 7772 7479 7569 6f70 7177 6572 iopqwrtyuiopqwer
512 00000130: 7479 7569 6f70 7177 6572 7479 7569 6f71 tyuiopqwertyuioq
513 00000140: 7765 7274 7975 696f 7071 7772 7479 7569 wertyuiopqwrtyui
514 00000150: 6f70 7177 6572 7479 7569 6f70 7177 6572 opqwertyuiopqwer
515 00000160: 7479 7569 6f70 7070 7177 6572 7479 7569 tyuiopppqwertyui
516 00000170: 6f70 7177 7274 7975 696f 7071 7765 7274 opqwrtyuiopqwert
517 00000180: 7975 696f 7071 7765 7274 7975 696f 7071 yuiopqwertyuiopq
518 00000190: 7765 7274 7975 696f 7071 7772 7479 7569 wertyuiopqwrtyui
519 000001a0: 6f70 7177 6572 7479 7569 6f70 7177 6572 opqwertyuiopqwer
520 000001b0: 7479 7569 6f71 7765 7274 7975 696f 7071 tyuioqwertyuiopq
521 000001c0: 7772 7479 7569 6f70 7177 6572 7479 7569 wrtyuiopqwertyui
522 000001d0: 6f70 7177 6572 7479 7569 6f71 7765 7274 opqwertyuioqwert
523 000001e0: 7975 696f 7071 7772 7479 7569 6f70 7177 yuiopqwrtyuiopqw
524 000001f0: 6572 7479 7569 6f70 7177 6572 7479 7569 ertyuiopqwertyui
525 00000200: 6f70 7070 7177 6572 7479 7569 6f70 7177 opppqwertyuiopqw
526 00000210: 7274 7975 696f 7071 7765 7274 7975 696f rtyuiopqwertyuio
527 00000220: 7071 7765 7274 7975 696f 7071 7765 7274 pqwertyuiopqwert
528 00000230: 7975 696f 7071 7772 7479 7569 6f70 7177 yuiopqwrtyuiopqw
529 00000240: 6572 7479 7569 6f70 7177 6572 7479 7569 ertyuiopqwertyui
530 00000250: 6f71 7765 7274 7975 696f 7071 7772 7479 oqwertyuiopqwrty
531 00000260: 7569 6f70 7177 6572 7479 7569 6f70 7177 uiopqwertyuiopqw
532 00000270: 6572 7479 7569 6f71 7765 7274 7975 696f ertyuioqwertyuio
533 00000280: 7071 7772 7479 7569 6f70 7177 6572 7479 pqwrtyuiopqwerty
534 00000290: 7569 6f70 7177 6572 7479 7569 6f70 7070 uiopqwertyuioppp
535 000002a0: 7177 6572 7479 7569 6f70 7177 7274 7975 qwertyuiopqwrtyu
536 000002b0: 696f 7071 7765 7274 7975 696f 7071 7765 iopqwertyuiopqwe
537 000002c0: 7274 7975 696f 7071 7765 7274 7975 696f rtyuiopqwertyuio
538 000002d0: 7071 7772 7479 7569 6f70 7177 6572 7479 pqwrtyuiopqwerty
539 000002e0: 7569 6f70 7177 6572 7479 7569 6f71 7765 uiopqwertyuioqwe
540 000002f0: 7274 7975 696f 7071 7772 7479 7569 6f70 rtyuiopqwrtyuiop
541 00000300: 7177 6572 7479 7569 6f70 7177 6572 7479 qwertyuiopqwerty
542 00000310: 7569 6f71 7765 7274 7975 696f 7071 7772 uioqwertyuiopqwr
543 00000320: 7479 7569 6f70 7177 6572 7479 7569 6f70 tyuiopqwertyuiop
544 00000330: 7177 6572 7479 7569 6f70 7070 7177 6572 qwertyuiopppqwer
545 00000340: 7479 7569 6f70 7177 7274 7975 696f 7071 tyuiopqwrtyuiopq
546 00000350: 7765 7274 7975 696f 7071 7765 7274 7975 wertyuiopqwertyu
547 00000360: 696f 7071 7765 7274 7975 696f 7071 7772 iopqwertyuiopqwr
548 00000370: 7479 7569 6f70 7177 6572 7479 7569 6f70 tyuiopqwertyuiop
549 00000380: 7177 6572 7479 7569 6f71 7765 7274 7975 qwertyuioqwertyu
550 00000390: 696f 7071 7772 7479 7569 6f70 7177 6572 iopqwrtyuiopqwer
551 000003a0: 7479 7569 6f70 7177 6572 7479 7569 6f71 tyuiopqwertyuioq
552 000003b0: 7765 7274 7975 696f 7071 7772 7479 7569 wertyuiopqwrtyui
553 000003c0: 6f70 7177 6572 7479 7569 6f70 7177 6572 opqwertyuiopqwer
554 000003d0: 7479 7569 6f70 7070 0a00 5115 6562 0900 tyuioppp..Q.eb..
555 000003e0: 0500 0001 fc1a 0000 4096 3615 9cff ffff ........@.6.....
556 000003f0: 0a00 0000 0000 0000 0000 0000 0000 0000 ................
557 00000400: 0000 0000 0000 0000 0000 0000 0000 0000 ................
558 00000410: 0000 0000 0000 0000 0000 0000 0000 0000 ................
559 00000420: 0000 0000 0000 0000 0000 0000 0000 0000 ................
560 )",
561 };
562
TEST_F(CpuReaderParsePagePayloadTest,ReallyLongEvent)563 TEST_F(CpuReaderParsePagePayloadTest, ReallyLongEvent) {
564 const ExamplePage* test_case = &g_really_long_event;
565
566 ProtoTranslationTable* table = GetTable(test_case->name);
567 auto page = PageFromXxd(test_case->data);
568
569 FtraceDataSourceConfig ds_config = EmptyConfig();
570 ds_config.event_filter.AddEnabledEvent(
571 table->EventToFtraceId(GroupAndName("ftrace", "print")));
572
573 const uint8_t* parse_pos = page.get();
574 std::optional<CpuReader::PageHeader> page_header =
575 CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
576
577 const uint8_t* page_end = page.get() + base::GetSysPageSize();
578 ASSERT_TRUE(page_header.has_value());
579 EXPECT_FALSE(page_header->lost_events);
580 EXPECT_LE(parse_pos + page_header->size, page_end);
581
582 CpuReader::ParsePagePayload(parse_pos, &page_header.value(), table,
583 &ds_config, CreateBundler(ds_config), &metadata_,
584 &last_read_event_ts_);
585
586 auto bundle = GetBundle();
587 const protos::gen::FtraceEvent& long_print = bundle.event()[0];
588 EXPECT_THAT(long_print.print().buf(), StartsWith("qwerty"));
589 EXPECT_THAT(long_print.print().buf(), EndsWith("ppp\n"));
590 const protos::gen::FtraceEvent& newline = bundle.event()[1];
591 EXPECT_EQ(newline.print().buf(), "\n");
592 }
593
594 // This event is as the event for ParseSinglePrint above except the string
595 // is extended and not null terminated.
596 static ExamplePage g_single_print_non_null_terminated{
597 "synthetic",
598 R"(
599 00000000: ba12 6a33 c628 0200 2c00 0000 0000 0000 ..j3.(..,.......
600 00000010: def0 ec67 8d21 0000 0800 0000 0500 0001 ...g.!..........
601 00000020: 2870 0000 ac5d 1661 86ff ffff 4865 6c6c (p...].a....Hell
602 00000030: 6f2c 2077 6f72 6c64 2161 6161 6161 6161 o, world!aaaaaaa
603 00000040: 6161 6161 6161 6161 6161 6161 6161 6161 aaaaaaaaaaaaaaaa
604 )",
605 };
606
TEST_F(CpuReaderParsePagePayloadTest,ParseSinglePrintNonNullTerminated)607 TEST_F(CpuReaderParsePagePayloadTest, ParseSinglePrintNonNullTerminated) {
608 const ExamplePage* test_case = &g_single_print_non_null_terminated;
609
610 ProtoTranslationTable* table = GetTable(test_case->name);
611 auto page = PageFromXxd(test_case->data);
612
613 FtraceDataSourceConfig ds_config = EmptyConfig();
614 ds_config.event_filter.AddEnabledEvent(
615 table->EventToFtraceId(GroupAndName("ftrace", "print")));
616
617 const uint8_t* parse_pos = page.get();
618 std::optional<CpuReader::PageHeader> page_header =
619 CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
620
621 const uint8_t* page_end = page.get() + base::GetSysPageSize();
622 ASSERT_TRUE(page_header.has_value());
623 EXPECT_FALSE(page_header->lost_events);
624 EXPECT_LE(parse_pos + page_header->size, page_end);
625
626 FtraceParseStatus status = CpuReader::ParsePagePayload(
627 parse_pos, &page_header.value(), table, &ds_config,
628 CreateBundler(ds_config), &metadata_, &last_read_event_ts_);
629
630 EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_OK);
631
632 auto bundle = GetBundle();
633 ASSERT_EQ(bundle.event().size(), 1u);
634 const protos::gen::FtraceEvent& event = bundle.event()[0];
635 EXPECT_EQ(event.pid(), 28712ul);
636 EXPECT_TRUE(WithinOneMicrosecond(event.timestamp(), 608934, 535199));
637 EXPECT_EQ(event.print().buf(), "Hello, world!aaa");
638 }
639
640 static ExamplePage g_single_print_zero_size{
641 "synthetic",
642 R"(
643 00000000: ba12 6a33 c628 0200 2c00 0000 0000 0000 ..j3.(..,.......
644 00000010: def0 ec67 8d21 0000 0800 0000 0500 0001 ...g.!..........
645 00000020: 2870 0000 ac5d 1661 86ff ffff 0000 0000 (p...].a........
646 00000030: 0000 0000 0000 0000 0000 0000 0000 0000 ................
647 00000040: 0000 0000 0000 0000 0000 0000 0000 0000 ................
648 )",
649 };
650
TEST_F(CpuReaderParsePagePayloadTest,ParseSinglePrintZeroSize)651 TEST_F(CpuReaderParsePagePayloadTest, ParseSinglePrintZeroSize) {
652 const ExamplePage* test_case = &g_single_print_zero_size;
653
654 ProtoTranslationTable* table = GetTable(test_case->name);
655 auto page = PageFromXxd(test_case->data);
656
657 FtraceDataSourceConfig ds_config = EmptyConfig();
658 ds_config.event_filter.AddEnabledEvent(
659 table->EventToFtraceId(GroupAndName("ftrace", "print")));
660
661 const uint8_t* parse_pos = page.get();
662 std::optional<CpuReader::PageHeader> page_header =
663 CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
664
665 const uint8_t* page_end = page.get() + base::GetSysPageSize();
666 ASSERT_TRUE(page_header.has_value());
667 EXPECT_FALSE(page_header->lost_events);
668 EXPECT_LE(parse_pos + page_header->size, page_end);
669
670 FtraceParseStatus status = CpuReader::ParsePagePayload(
671 parse_pos, &page_header.value(), table, &ds_config,
672 CreateBundler(ds_config), &metadata_, &last_read_event_ts_);
673
674 EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_OK);
675
676 auto bundle = GetBundle();
677 ASSERT_EQ(bundle.event().size(), 1u);
678 const protos::gen::FtraceEvent& event = bundle.event()[0];
679 EXPECT_EQ(event.pid(), 28712ul);
680 EXPECT_TRUE(WithinOneMicrosecond(event.timestamp(), 608934, 535199));
681 EXPECT_TRUE(event.print().has_buf());
682 EXPECT_EQ(event.print().buf(), "");
683 }
684
TEST_F(CpuReaderParsePagePayloadTest,FilterByEvent)685 TEST_F(CpuReaderParsePagePayloadTest, FilterByEvent) {
686 const ExamplePage* test_case = &g_single_print;
687
688 ProtoTranslationTable* table = GetTable(test_case->name);
689 auto page = PageFromXxd(test_case->data);
690
691 FtraceDataSourceConfig ds_config = EmptyConfig();
692
693 const uint8_t* parse_pos = page.get();
694 std::optional<CpuReader::PageHeader> page_header =
695 CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
696
697 ASSERT_TRUE(page_header.has_value());
698 EXPECT_FALSE(page_header->lost_events);
699
700 FtraceParseStatus status = CpuReader::ParsePagePayload(
701 parse_pos, &page_header.value(), table, &ds_config,
702 CreateBundler(ds_config), &metadata_, &last_read_event_ts_);
703
704 EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_OK);
705
706 EXPECT_THAT(AllTracePackets(), IsEmpty());
707 }
708
709 // clang-format off
710 // # tracer: nop
711 // #
712 // # entries-in-buffer/entries-written: 3/3 #P:8
713 // #
714 // # _-----=> irqs-off
715 // # / _----=> need-resched
716 // # | / _---=> hardirq/softirq
717 // # || / _--=> preempt-depth
718 // # ||| / delay
719 // # TASK-PID CPU# |||| TIMESTAMP FUNCTION
720 // # | | | |||| | |
721 // sh-30693 [000] ...1 615436.216806: tracing_mark_write: Hello, world!
722 // sh-30693 [000] ...1 615486.377232: tracing_mark_write: Good afternoon, world!
723 // sh-30693 [000] ...1 615495.632679: tracing_mark_write: Goodbye, world!
724 // clang-format on
725
726 static ExamplePage g_three_prints{
727 "synthetic",
728 R"(
729 00000000: a3ab 1569 bc2f 0200 9400 0000 0000 0000 ...i./..........
730 00000010: 1e00 0000 0000 0000 0800 0000 0500 0001 ................
731 00000020: e577 0000 ac5d 1661 86ff ffff 4865 6c6c .w...].a....Hell
732 00000030: 6f2c 2077 6f72 6c64 210a 0000 5e32 6bb9 o, world!...^2k.
733 00000040: 7501 0000 0b00 0000 0500 0001 e577 0000 u............w..
734 00000050: ac5d 1661 86ff ffff 476f 6f64 2061 6674 .].a....Good aft
735 00000060: 6572 6e6f 6f6e 2c20 776f 726c 6421 0a00 ernoon, world!..
736 00000070: 0000 0000 9e6a 5df5 4400 0000 0900 0000 .....j].D.......
737 00000080: 0500 0001 e577 0000 ac5d 1661 86ff ffff .....w...].a....
738 00000090: 476f 6f64 6279 652c 2077 6f72 6c64 210a Goodbye, world!.
739 000000a0: 0051 0000 0000 0000 0000 0000 0000 0000 .Q..............
740 )",
741 };
742
TEST_F(CpuReaderParsePagePayloadTest,ParseThreePrint)743 TEST_F(CpuReaderParsePagePayloadTest, ParseThreePrint) {
744 const ExamplePage* test_case = &g_three_prints;
745
746 ProtoTranslationTable* table = GetTable(test_case->name);
747 auto page = PageFromXxd(test_case->data);
748
749 FtraceDataSourceConfig ds_config = EmptyConfig();
750 ds_config.event_filter.AddEnabledEvent(
751 table->EventToFtraceId(GroupAndName("ftrace", "print")));
752
753 const uint8_t* parse_pos = page.get();
754 std::optional<CpuReader::PageHeader> page_header =
755 CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
756
757 const uint8_t* page_end = page.get() + base::GetSysPageSize();
758 ASSERT_TRUE(page_header.has_value());
759 EXPECT_FALSE(page_header->lost_events);
760 EXPECT_LE(parse_pos + page_header->size, page_end);
761
762 FtraceParseStatus status = CpuReader::ParsePagePayload(
763 parse_pos, &page_header.value(), table, &ds_config,
764 CreateBundler(ds_config), &metadata_, &last_read_event_ts_);
765
766 EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_OK);
767
768 auto bundle = GetBundle();
769 ASSERT_EQ(bundle.event().size(), 3u);
770
771 {
772 const protos::gen::FtraceEvent& event = bundle.event()[0];
773 EXPECT_EQ(event.pid(), 30693ul);
774 EXPECT_TRUE(WithinOneMicrosecond(event.timestamp(), 615436, 216806));
775 EXPECT_EQ(event.print().buf(), "Hello, world!\n");
776 }
777
778 {
779 const protos::gen::FtraceEvent& event = bundle.event()[1];
780 EXPECT_EQ(event.pid(), 30693ul);
781 EXPECT_TRUE(WithinOneMicrosecond(event.timestamp(), 615486, 377232));
782 EXPECT_EQ(event.print().buf(), "Good afternoon, world!\n");
783 }
784
785 {
786 const protos::gen::FtraceEvent& event = bundle.event()[2];
787 EXPECT_EQ(event.pid(), 30693ul);
788 EXPECT_TRUE(WithinOneMicrosecond(event.timestamp(), 615495, 632679));
789 EXPECT_EQ(event.print().buf(), "Goodbye, world!\n");
790 }
791 }
792
TEST_F(CpuReaderParsePagePayloadTest,ParsePrintWithAndWithoutFilter)793 TEST_F(CpuReaderParsePagePayloadTest, ParsePrintWithAndWithoutFilter) {
794 using FtraceEventBundle = protos::gen::FtraceEventBundle;
795 using FtraceEvent = protos::gen::FtraceEvent;
796 using PrintFtraceEvent = protos::gen::PrintFtraceEvent;
797
798 const ExamplePage* test_case = &g_three_prints;
799
800 ProtoTranslationTable* table = GetTable(test_case->name);
801 auto page = PageFromXxd(test_case->data);
802
803 const uint8_t* parse_pos = page.get();
804 std::optional<CpuReader::PageHeader> page_header =
805 CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
806
807 const uint8_t* page_end = page.get() + base::GetSysPageSize();
808 ASSERT_TRUE(page_header.has_value());
809 ASSERT_FALSE(page_header->lost_events);
810 ASSERT_LE(parse_pos + page_header->size, page_end);
811 {
812 FtraceDataSourceConfig ds_config_no_filter = EmptyConfig();
813 ds_config_no_filter.event_filter.AddEnabledEvent(
814 table->EventToFtraceId(GroupAndName("ftrace", "print")));
815
816 FtraceParseStatus status = CpuReader::ParsePagePayload(
817 parse_pos, &page_header.value(), table, &ds_config_no_filter,
818 CreateBundler(ds_config_no_filter), &metadata_, &last_read_event_ts_);
819 EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_OK);
820
821 auto bundle = GetBundle();
822 EXPECT_THAT(
823 bundle,
824 Property(
825 &FtraceEventBundle::event,
826 ElementsAre(
827 Property(&FtraceEvent::print,
828 Property(&PrintFtraceEvent::buf, "Hello, world!\n")),
829 Property(&FtraceEvent::print,
830 Property(&PrintFtraceEvent::buf,
831 "Good afternoon, world!\n")),
832 Property(&FtraceEvent::print, Property(&PrintFtraceEvent::buf,
833 "Goodbye, world!\n")))));
834 }
835
836 {
837 FtraceDataSourceConfig ds_config_with_filter = EmptyConfig();
838 ds_config_with_filter.event_filter.AddEnabledEvent(
839 table->EventToFtraceId(GroupAndName("ftrace", "print")));
840
841 FtraceConfig::PrintFilter conf;
842 auto* rule = conf.add_rules();
843 rule->set_prefix("Good ");
844 rule->set_allow(false);
845 ds_config_with_filter.print_filter =
846 FtracePrintFilterConfig::Create(conf, table);
847 ASSERT_TRUE(ds_config_with_filter.print_filter.has_value());
848
849 FtraceParseStatus status = CpuReader::ParsePagePayload(
850 parse_pos, &page_header.value(), table, &ds_config_with_filter,
851 CreateBundler(ds_config_with_filter), &metadata_, &last_read_event_ts_);
852 EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_OK);
853
854 auto bundle = GetBundle();
855 EXPECT_THAT(
856 bundle,
857 Property(
858 &FtraceEventBundle::event,
859 ElementsAre(
860 Property(&FtraceEvent::print,
861 Property(&PrintFtraceEvent::buf, "Hello, world!\n")),
862 Property(&FtraceEvent::print, Property(&PrintFtraceEvent::buf,
863 "Goodbye, world!\n")))));
864 }
865 }
866
TEST(CpuReaderTest,ProcessPagesForDataSourceNoEmptyPackets)867 TEST(CpuReaderTest, ProcessPagesForDataSourceNoEmptyPackets) {
868 const ExamplePage* test_case = &g_three_prints;
869
870 ProtoTranslationTable* table = GetTable(test_case->name);
871 auto page = PageFromXxd(test_case->data);
872
873 std::vector<const void*> test_page_order = {
874 page.get(), page.get(), page.get(), page.get(),
875 page.get(), page.get(), page.get(), page.get()};
876
877 // Prepare a buffer with 8 contiguous pages, with the above contents.
878 static constexpr size_t kTestPages = 8;
879
880 std::unique_ptr<uint8_t[]> buf(
881 new uint8_t[base::GetSysPageSize() * kTestPages]());
882 for (size_t i = 0; i < kTestPages; i++) {
883 void* dest = buf.get() + (i * base::GetSysPageSize());
884 memcpy(dest, static_cast<const void*>(test_page_order[i]),
885 base::GetSysPageSize());
886 }
887 auto compact_sched_buf = std::make_unique<CompactSchedBuffer>();
888
889 {
890 FtraceMetadata metadata{};
891 FtraceDataSourceConfig with_filter = EmptyConfig();
892 with_filter.event_filter.AddEnabledEvent(
893 table->EventToFtraceId(GroupAndName("ftrace", "print")));
894
895 FtraceConfig::PrintFilter conf;
896 auto* rule = conf.add_rules();
897 rule->set_prefix("");
898 rule->set_allow(false);
899 with_filter.print_filter = FtracePrintFilterConfig::Create(conf, table);
900 ASSERT_TRUE(with_filter.print_filter.has_value());
901
902 TraceWriterForTesting trace_writer;
903 base::FlatSet<protos::pbzero::FtraceParseStatus> parse_errors;
904 uint64_t last_read_event_ts = 0;
905 bool success = CpuReader::ProcessPagesForDataSource(
906 &trace_writer, &metadata, /*cpu=*/1, &with_filter, &parse_errors,
907 &last_read_event_ts, buf.get(), kTestPages, compact_sched_buf.get(),
908 table,
909 /*symbolizer=*/nullptr,
910 /*ftrace_clock_snapshot=*/nullptr,
911 protos::pbzero::FTRACE_CLOCK_UNSPECIFIED);
912
913 EXPECT_TRUE(success);
914
915 // Check that the data source doesn't emit any packet, not even empty
916 // packets.
917 EXPECT_THAT(trace_writer.GetAllTracePackets(), IsEmpty());
918 }
919
920 {
921 FtraceMetadata metadata{};
922 FtraceDataSourceConfig without_filter = EmptyConfig();
923 without_filter.event_filter.AddEnabledEvent(
924 table->EventToFtraceId(GroupAndName("ftrace", "print")));
925
926 TraceWriterForTesting trace_writer;
927 base::FlatSet<protos::pbzero::FtraceParseStatus> parse_errors;
928 uint64_t last_read_event_ts = 0;
929 bool success = CpuReader::ProcessPagesForDataSource(
930 &trace_writer, &metadata, /*cpu=*/1, &without_filter, &parse_errors,
931 &last_read_event_ts, buf.get(), kTestPages, compact_sched_buf.get(),
932 table,
933 /*symbolizer=*/nullptr,
934 /*ftrace_clock_snapshot=*/nullptr,
935 protos::pbzero::FTRACE_CLOCK_UNSPECIFIED);
936
937 EXPECT_TRUE(success);
938
939 EXPECT_THAT(trace_writer.GetAllTracePackets(), Not(IsEmpty()));
940 }
941 }
942
943 // clang-format off
944 // # tracer: nop
945 // #
946 // # entries-in-buffer/entries-written: 6/6 #P:8
947 // #
948 // # _-----=> irqs-off
949 // # / _----=> need-resched
950 // # | / _---=> hardirq/softirq
951 // # || / _--=> preempt-depth
952 // # ||| / delay
953 // # TASK-PID CPU# |||| TIMESTAMP FUNCTION
954 // # | | | |||| | |
955 // 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
956 // 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
957 // 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
958 // 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
959 // 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
960 // 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
961 // clang-format on
962
963 static ExamplePage g_six_sched_switch{
964 "synthetic",
965 R"(
966 00000000: 2b16 c3be 90b6 0300 a001 0000 0000 0000 +...............
967 00000010: 1e00 0000 0000 0000 1000 0000 2f00 0103 ............/...
968 00000020: 0300 0000 6b73 6f66 7469 7271 642f 3000 ....ksoftirqd/0.
969 00000030: 0000 0000 0300 0000 7800 0000 0100 0000 ........x.......
970 00000040: 0000 0000 736c 6565 7000 722f 3000 0000 ....sleep.r/0...
971 00000050: 0000 0000 950e 0000 7800 0000 b072 8805 ........x....r..
972 00000060: 2f00 0103 950e 0000 736c 6565 7000 722f /.......sleep.r/
973 00000070: 3000 0000 0000 0000 950e 0000 7800 0000 0...........x...
974 00000080: 0008 0000 0000 0000 7263 756f 702f 3000 ........rcuop/0.
975 00000090: 0000 0000 0000 0000 0a00 0000 7800 0000 ............x...
976 000000a0: f0b0 4700 2f00 0103 0700 0000 7263 755f ..G./.......rcu_
977 000000b0: 7072 6565 6d70 7400 0000 0000 0700 0000 preempt.........
978 000000c0: 7800 0000 0100 0000 0000 0000 736c 6565 x...........slee
979 000000d0: 7000 722f 3000 0000 0000 0000 950e 0000 p.r/0...........
980 000000e0: 7800 0000 1001 ef00 2f00 0103 950e 0000 x......./.......
981 000000f0: 736c 6565 7000 722f 3000 0000 0000 0000 sleep.r/0.......
982 00000100: 950e 0000 7800 0000 0008 0000 0000 0000 ....x...........
983 00000110: 7368 0064 0065 722f 3000 0000 0000 0000 sh.d.er/0.......
984 00000120: b90d 0000 7800 0000 f0c7 e601 2f00 0103 ....x......./...
985 00000130: b90d 0000 7368 0064 0065 722f 3000 0000 ....sh.d.er/0...
986 00000140: 0000 0000 b90d 0000 7800 0000 0100 0000 ........x.......
987 00000150: 0000 0000 736c 6565 7000 722f 3000 0000 ....sleep.r/0...
988 00000160: 0000 0000 950e 0000 7800 0000 d030 0e00 ........x....0..
989 00000170: 2f00 0103 950e 0000 736c 6565 7000 722f /.......sleep.r/
990 00000180: 3000 0000 0000 0000 950e 0000 7800 0000 0...........x...
991 00000190: 4000 0000 0000 0000 6b77 6f72 6b65 722f @.......kworker/
992 000001a0: 7531 363a 3300 0000 610e 0000 7800 0000 u16:3...a...x...
993 000001b0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
994 )",
995 };
996
TEST_F(CpuReaderParsePagePayloadTest,ParseSixSchedSwitch)997 TEST_F(CpuReaderParsePagePayloadTest, ParseSixSchedSwitch) {
998 const ExamplePage* test_case = &g_six_sched_switch;
999
1000 ProtoTranslationTable* table = GetTable(test_case->name);
1001 auto page = PageFromXxd(test_case->data);
1002
1003 FtraceDataSourceConfig ds_config = EmptyConfig();
1004 ds_config.event_filter.AddEnabledEvent(
1005 table->EventToFtraceId(GroupAndName("sched", "sched_switch")));
1006
1007 const uint8_t* parse_pos = page.get();
1008 std::optional<CpuReader::PageHeader> page_header =
1009 CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
1010
1011 const uint8_t* page_end = page.get() + base::GetSysPageSize();
1012 ASSERT_TRUE(page_header.has_value());
1013 EXPECT_FALSE(page_header->lost_events);
1014 EXPECT_LE(parse_pos + page_header->size, page_end);
1015
1016 FtraceParseStatus status = CpuReader::ParsePagePayload(
1017 parse_pos, &page_header.value(), table, &ds_config,
1018 CreateBundler(ds_config), &metadata_, &last_read_event_ts_);
1019
1020 EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_OK);
1021 EXPECT_EQ(last_read_event_ts_, 1'045'157'726'697'236ULL);
1022
1023 auto bundle = GetBundle();
1024 EXPECT_EQ(0u, bundle.last_read_event_timestamp());
1025 ASSERT_EQ(bundle.event().size(), 6u);
1026 {
1027 const protos::gen::FtraceEvent& event = bundle.event()[1];
1028 EXPECT_EQ(event.pid(), 3733ul);
1029 EXPECT_TRUE(WithinOneMicrosecond(event.timestamp(), 1045157, 725035));
1030 EXPECT_EQ(event.sched_switch().prev_comm(), "sleep");
1031 EXPECT_EQ(event.sched_switch().prev_pid(), 3733);
1032 EXPECT_EQ(event.sched_switch().prev_prio(), 120);
1033 EXPECT_EQ(event.sched_switch().next_comm(), "rcuop/0");
1034 EXPECT_EQ(event.sched_switch().next_pid(), 10);
1035 EXPECT_EQ(event.sched_switch().next_prio(), 120);
1036 }
1037 }
1038
TEST_F(CpuReaderParsePagePayloadTest,ParseSixSchedSwitchCompactFormat)1039 TEST_F(CpuReaderParsePagePayloadTest, ParseSixSchedSwitchCompactFormat) {
1040 const ExamplePage* test_case = &g_six_sched_switch;
1041
1042 ProtoTranslationTable* table = GetTable(test_case->name);
1043 auto page = PageFromXxd(test_case->data);
1044
1045 FtraceDataSourceConfig ds_config{EventFilter{},
1046 EventFilter{},
1047 EnabledCompactSchedConfigForTesting(),
1048 std::nullopt,
1049 {},
1050 {},
1051 false /* symbolize_ksyms*/,
1052 false /*preserve_ftrace_buffer*/,
1053 {}};
1054 ds_config.event_filter.AddEnabledEvent(
1055 table->EventToFtraceId(GroupAndName("sched", "sched_switch")));
1056
1057 const uint8_t* parse_pos = page.get();
1058 std::optional<CpuReader::PageHeader> page_header =
1059 CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
1060
1061 const uint8_t* page_end = page.get() + base::GetSysPageSize();
1062 ASSERT_TRUE(page_header.has_value());
1063 EXPECT_FALSE(page_header->lost_events);
1064 EXPECT_LE(parse_pos + page_header->size, page_end);
1065
1066 FtraceParseStatus status = CpuReader::ParsePagePayload(
1067 parse_pos, &page_header.value(), table, &ds_config,
1068 CreateBundler(ds_config), &metadata_, &last_read_event_ts_);
1069
1070 EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_OK);
1071 EXPECT_EQ(last_read_event_ts_, 1'045'157'726'697'236ULL);
1072
1073 // sched switch fields were buffered:
1074 EXPECT_LT(0u, bundler_->compact_sched_buf()->sched_switch().size());
1075 EXPECT_LT(0u,
1076 bundler_->compact_sched_buf()->interner().interned_comms_size());
1077
1078 // Write the buffer out & check the serialized format:
1079 auto bundle = GetBundle();
1080
1081 const auto& compact_sched = bundle.compact_sched();
1082 EXPECT_EQ(0u, bundle.last_read_event_timestamp());
1083
1084 EXPECT_EQ(6u, compact_sched.switch_timestamp().size());
1085 EXPECT_EQ(6u, compact_sched.switch_prev_state().size());
1086 EXPECT_EQ(6u, compact_sched.switch_next_pid().size());
1087 EXPECT_EQ(6u, compact_sched.switch_next_prio().size());
1088 // 4 unique interned next_comm strings:
1089 EXPECT_EQ(4u, compact_sched.intern_table().size());
1090 EXPECT_EQ(6u, compact_sched.switch_next_comm_index().size());
1091
1092 // First event exactly as expected (absolute timestamp):
1093 EXPECT_TRUE(WithinOneMicrosecond(compact_sched.switch_timestamp()[0], 1045157,
1094 722134));
1095 EXPECT_EQ(1, compact_sched.switch_prev_state()[0]);
1096 EXPECT_EQ(3733, compact_sched.switch_next_pid()[0]);
1097 EXPECT_EQ(120, compact_sched.switch_next_prio()[0]);
1098 auto comm_intern_idx = compact_sched.switch_next_comm_index()[0];
1099 std::string next_comm = compact_sched.intern_table()[comm_intern_idx];
1100 EXPECT_EQ("sleep", next_comm);
1101 }
1102
1103 // clang-format off
1104 // # tracer: nop
1105 // #
1106 // # entries-in-buffer/entries-written: 23/23 #P:8
1107 // #
1108 // # _-----=> irqs-off/BH-disabled
1109 // # / _----=> need-resched
1110 // # | / _---=> hardirq/softirq
1111 // # || / _--=> preempt-depth
1112 // # ||| / _-=> migrate-disable
1113 // # |||| / delay
1114 // # TASK-PID CPU# ||||| TIMESTAMP FUNCTION
1115 // # | | | ||||| | |
1116 // <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
1117 // ls-219057 [000] d..3. 701500.115222: sched_waking: comm=kworker/u16:17 pid=203967 prio=120 target_cpu=006
1118 // ls-219057 [000] d..3. 701500.115327: sched_waking: comm=kworker/u16:17 pid=203967 prio=120 target_cpu=006
1119 // ls-219057 [000] d..3. 701500.115412: sched_waking: comm=kworker/u16:5 pid=205556 prio=120 target_cpu=004
1120 // ls-219057 [000] d..3. 701500.115416: sched_waking: comm=kworker/u16:17 pid=203967 prio=120 target_cpu=006
1121 // ls-219057 [000] dN.5. 701500.115801: sched_waking: comm=bash pid=217958 prio=120 target_cpu=006
1122 // 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
1123 // clang-format on
1124
1125 static ExamplePage g_sched_page{
1126 "synthetic_alt",
1127 R"(
1128 00000000: 67ce f4b8 027e 0200 5801 0000 0000 0000 g....~..X.......
1129 00000010: 1e00 0000 0000 0000 1000 0000 3d01 0102 ............=...
1130 00000020: 0000 0000 7377 6170 7065 722f 3000 0000 ....swapper/0...
1131 00000030: 0000 0000 0000 0000 7800 0000 0000 0000 ........x.......
1132 00000040: 0000 0000 6261 7368 0000 0000 0000 0000 ....bash........
1133 00000050: 0000 0000 b157 0300 7800 0000 a9d2 1507 .....W..x.......
1134 00000060: 4001 0103 b157 0300 6b77 6f72 6b65 722f @....W..kworker/
1135 00000070: 7531 363a 3137 0000 bf1c 0300 7800 0000 u16:17......x...
1136 00000080: 0600 0000 c953 3300 4001 0103 b157 0300 .....S3.@....W..
1137 00000090: 6b77 6f72 6b65 722f 7531 363a 3137 0000 kworker/u16:17..
1138 000000a0: bf1c 0300 7800 0000 0600 0000 0981 2900 ....x.........).
1139 000000b0: 4001 0103 b157 0300 6b77 6f72 6b65 722f @....W..kworker/
1140 000000c0: 7531 363a 3500 0000 f422 0300 7800 0000 u16:5...."..x...
1141 000000d0: 0400 0000 89e0 0100 4001 0103 b157 0300 ........@....W..
1142 000000e0: 6b77 6f72 6b65 722f 7531 363a 3137 0000 kworker/u16:17..
1143 000000f0: bf1c 0300 7800 0000 0600 0000 e92c bc00 ....x........,..
1144 00000100: 4001 2505 b157 0300 6261 7368 0000 0000 @.%..W..bash....
1145 00000110: 0000 0000 0000 0000 6653 0300 7800 0000 ........fS..x...
1146 00000120: 0600 0000 10f8 0700 3d01 0102 b157 0300 ........=....W..
1147 00000130: 6c73 0000 0000 0000 0000 0000 0000 0000 ls..............
1148 00000140: b157 0300 7800 0000 2000 0000 0000 0000 .W..x... .......
1149 00000150: 7377 6170 7065 722f 3000 0000 0000 0000 swapper/0.......
1150 00000160: 0000 0000 7800 0000 0000 0000 0000 0000 ....x...........
1151 )",
1152 };
1153
TEST_F(CpuReaderParsePagePayloadTest,ParseCompactSchedSwitchAndWaking)1154 TEST_F(CpuReaderParsePagePayloadTest, ParseCompactSchedSwitchAndWaking) {
1155 const ExamplePage* test_case = &g_sched_page;
1156
1157 ProtoTranslationTable* table = GetTable(test_case->name);
1158 auto page = PageFromXxd(test_case->data);
1159
1160 FtraceDataSourceConfig ds_config{EventFilter{},
1161 EventFilter{},
1162 EnabledCompactSchedConfigForTesting(),
1163 std::nullopt,
1164 {},
1165 {},
1166 false /* symbolize_ksyms*/,
1167 false /*preserve_ftrace_buffer*/,
1168 {}};
1169 ds_config.event_filter.AddEnabledEvent(
1170 table->EventToFtraceId(GroupAndName("sched", "sched_switch")));
1171 ds_config.event_filter.AddEnabledEvent(
1172 table->EventToFtraceId(GroupAndName("sched", "sched_waking")));
1173
1174 const uint8_t* parse_pos = page.get();
1175 std::optional<CpuReader::PageHeader> page_header =
1176 CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
1177
1178 const uint8_t* page_end = page.get() + base::GetSysPageSize();
1179 ASSERT_TRUE(page_header.has_value());
1180 EXPECT_FALSE(page_header->lost_events);
1181 EXPECT_LE(parse_pos + page_header->size, page_end);
1182
1183 FtraceParseStatus status = CpuReader::ParsePagePayload(
1184 parse_pos, &page_header.value(), table, &ds_config,
1185 CreateBundler(ds_config), &metadata_, &last_read_event_ts_);
1186
1187 EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_OK);
1188
1189 // sched fields were buffered:
1190 EXPECT_LT(0u, bundler_->compact_sched_buf()->sched_switch().size());
1191 EXPECT_LT(0u, bundler_->compact_sched_buf()->sched_waking().size());
1192 EXPECT_LT(0u,
1193 bundler_->compact_sched_buf()->interner().interned_comms_size());
1194
1195 // Write the buffer out & check the serialized format:
1196 auto bundle = GetBundle();
1197 const auto& compact_sched = bundle.compact_sched();
1198 // 2 sched_switch events:
1199 EXPECT_EQ(2u, compact_sched.switch_timestamp().size());
1200 EXPECT_EQ(2u, compact_sched.switch_prev_state().size());
1201 EXPECT_EQ(2u, compact_sched.switch_next_pid().size());
1202 EXPECT_EQ(2u, compact_sched.switch_next_prio().size());
1203 EXPECT_EQ(2u, compact_sched.switch_next_comm_index().size());
1204 // 5 sched_waking events:
1205 EXPECT_EQ(5u, compact_sched.waking_timestamp().size());
1206 EXPECT_EQ(5u, compact_sched.waking_pid().size());
1207 EXPECT_EQ(5u, compact_sched.waking_target_cpu().size());
1208 EXPECT_EQ(5u, compact_sched.waking_prio().size());
1209 EXPECT_EQ(5u, compact_sched.waking_comm_index().size());
1210 EXPECT_EQ(5u, compact_sched.waking_common_flags().size());
1211 // 4 unique interned comm strings:
1212 EXPECT_EQ(4u, compact_sched.intern_table().size());
1213
1214 // First sched waking as expected:
1215 EXPECT_EQ(compact_sched.waking_timestamp()[0], 701500115221756ull);
1216 EXPECT_EQ(compact_sched.waking_pid()[0], 203967);
1217 EXPECT_EQ(compact_sched.waking_target_cpu()[0], 6);
1218 EXPECT_EQ(compact_sched.waking_prio()[0], 120);
1219 EXPECT_EQ(compact_sched.waking_common_flags()[0], 1u);
1220 auto comm_intern_idx = compact_sched.waking_comm_index()[0];
1221 std::string comm = compact_sched.intern_table()[comm_intern_idx];
1222 EXPECT_EQ("kworker/u16:17", comm);
1223 }
1224
1225 TEST_F(CpuReaderTableTest, ParseAllFields) {
1226 using FakeEventProvider =
1227 ProtoProvider<pbzero::FakeFtraceEvent, gen::FakeFtraceEvent>;
1228
1229 uint16_t ftrace_event_id = 102;
1230
1231 std::vector<Field> common_fields;
1232 {
1233 common_fields.emplace_back(Field{});
1234 Field* field = &common_fields.back();
1235 field->ftrace_offset = 4;
1236 field->ftrace_size = 4;
1237 field->ftrace_type = kFtraceCommonPid32;
1238 field->proto_field_id = 2;
1239 field->proto_field_type = ProtoSchemaType::kInt32;
1240 SetTranslationStrategy(field->ftrace_type, field->proto_field_type,
1241 &field->strategy);
1242 }
1243
1244 std::vector<Event> events;
1245 events.emplace_back(Event{});
1246 {
1247 Event* event = &events.back();
1248 event->name = "";
1249 event->group = "";
1250 event->proto_field_id = 42;
1251 event->ftrace_event_id = ftrace_event_id;
1252
1253 {
1254 // uint32 -> uint32
1255 event->fields.emplace_back(Field{});
1256 Field* field = &event->fields.back();
1257 field->ftrace_offset = 8;
1258 field->ftrace_size = 4;
1259 field->ftrace_type = kFtraceUint32;
1260 field->proto_field_id = 1;
1261 field->proto_field_type = ProtoSchemaType::kUint32;
1262 }
1263
1264 {
1265 // pid32 -> uint32
1266 event->fields.emplace_back(Field{});
1267 Field* field = &event->fields.back();
1268 field->ftrace_offset = 12;
1269 field->ftrace_size = 4;
1270 field->ftrace_type = kFtracePid32;
1271 field->proto_field_id = 2;
1272 field->proto_field_type = ProtoSchemaType::kInt32;
1273 }
1274
1275 {
1276 // dev32 -> uint64
1277 event->fields.emplace_back(Field{});
1278 Field* field = &event->fields.back();
1279 field->ftrace_offset = 16;
1280 field->ftrace_size = 4;
1281 field->ftrace_type = kFtraceDevId32;
1282 field->proto_field_id = 3;
1283 field->proto_field_type = ProtoSchemaType::kUint64;
1284 }
1285
1286 {
1287 // ino_t (32bit) -> uint64
1288 event->fields.emplace_back(Field{});
1289 Field* field = &event->fields.back();
1290 field->ftrace_offset = 20;
1291 field->ftrace_size = 4;
1292 field->ftrace_type = kFtraceInode32;
1293 field->proto_field_id = 4;
1294 field->proto_field_type = ProtoSchemaType::kUint64;
1295 }
1296
1297 {
1298 // dev64 -> uint64
1299 event->fields.emplace_back(Field{});
1300 Field* field = &event->fields.back();
1301 field->ftrace_offset = 24;
1302 field->ftrace_size = 8;
1303 field->ftrace_type = kFtraceDevId64;
1304 field->proto_field_id = 5;
1305 field->proto_field_type = ProtoSchemaType::kUint64;
1306 }
1307
1308 {
1309 // ino_t (64bit) -> uint64
1310 event->fields.emplace_back(Field{});
1311 Field* field = &event->fields.back();
1312 field->ftrace_offset = 32;
1313 field->ftrace_size = 8;
1314 field->ftrace_type = kFtraceInode64;
1315 field->proto_field_id = 6;
1316 field->proto_field_type = ProtoSchemaType::kUint64;
1317 }
1318
1319 {
1320 // char[16] -> string
1321 event->fields.emplace_back(Field{});
1322 Field* field = &event->fields.back();
1323 field->ftrace_offset = 40;
1324 field->ftrace_size = 16;
1325 field->ftrace_type = kFtraceFixedCString;
1326 field->proto_field_id = 500;
1327 field->proto_field_type = ProtoSchemaType::kString;
1328 }
1329
1330 {
1331 // char* -> string
1332 event->fields.emplace_back(Field{});
1333 Field* field = &event->fields.back();
1334 field->ftrace_offset = 56;
1335 field->ftrace_size = 8;
1336 field->ftrace_type = kFtraceStringPtr;
1337 field->proto_field_id = 503;
1338 field->proto_field_type = ProtoSchemaType::kString;
1339 }
1340
1341 {
1342 // dataloc -> string
1343 event->fields.emplace_back(Field{});
1344 Field* field = &event->fields.back();
1345 field->ftrace_offset = 65;
1346 field->ftrace_size = 4;
1347 field->ftrace_type = kFtraceDataLoc;
1348 field->proto_field_id = 502;
1349 field->proto_field_type = ProtoSchemaType::kString;
1350 }
1351
1352 {
1353 // char -> string
1354 event->fields.emplace_back(Field{});
1355 Field* field = &event->fields.back();
1356 field->ftrace_offset = 69;
1357 field->ftrace_size = 0;
1358 field->ftrace_type = kFtraceCString;
1359 field->proto_field_id = 501;
1360 field->proto_field_type = ProtoSchemaType::kString;
1361 }
1362
1363 for (Field& field : event->fields) {
1364 SetTranslationStrategy(field.ftrace_type, field.proto_field_type,
1365 &field.strategy);
1366 }
1367 }
1368
1369 PrintkMap printk_formats;
1370 printk_formats.insert(0xffffff8504f51b23, "my_printk_format_string");
1371 ProtoTranslationTable table(
1372 &ftrace_, events, std::move(common_fields),
1373 ProtoTranslationTable::DefaultPageHeaderSpecForTesting(),
1374 InvalidCompactSchedEventFormatForTesting(), printk_formats);
1375 FtraceDataSourceConfig ds_config = EmptyConfig();
1376
1377 FakeEventProvider provider(base::GetSysPageSize());
1378
1379 BinaryWriter writer;
1380
1381 // Must use the bit masks to translate between kernel and userspace device ids
1382 // to generate the below examples
1383 const uint32_t kKernelBlockDeviceId = 271581216;
1384
1385 const BlockDeviceID kUserspaceBlockDeviceId =
1386 CpuReader::TranslateBlockDeviceIDToUserspace<BlockDeviceID>(
1387 kKernelBlockDeviceId);
1388 const uint64_t k64BitKernelBlockDeviceId = 4442450946;
1389 const BlockDeviceID k64BitUserspaceBlockDeviceId =
1390 CpuReader::TranslateBlockDeviceIDToUserspace<uint64_t>(
1391 k64BitKernelBlockDeviceId);
1392
1393 writer.Write<int32_t>(1001); // Common field.
1394 writer.Write<int32_t>(9999); // Common pid
1395 writer.Write<int32_t>(1003); // Uint32 field
1396 writer.Write<int32_t>(97); // Pid
1397 writer.Write<int32_t>(kKernelBlockDeviceId); // Dev id
1398 writer.Write<int32_t>(98); // Inode 32
1399 writer.Write<int64_t>(k64BitKernelBlockDeviceId); // Dev id 64
1400 writer.Write<int64_t>(99u); // Inode 64
1401 writer.WriteFixedString(16, "Hello");
1402 writer.Write<uint64_t>(0xffffff8504f51b23ULL); // char* (printk formats)
1403 writer.Write<uint8_t>(0); // Deliberately mis-aligning.
1404 writer.Write<uint32_t>(40 | 6 << 16);
1405 writer.WriteFixedString(300, "Goodbye");
1406
1407 auto input = writer.GetCopy();
1408 auto length = writer.written();
1409 FtraceMetadata metadata{};
1410
1411 ASSERT_TRUE(CpuReader::ParseEvent(ftrace_event_id, input.get(),
1412 input.get() + length, &table, &ds_config,
1413 provider.writer(), &metadata));
1414
1415 auto event = provider.ParseProto();
1416 ASSERT_TRUE(event);
1417 EXPECT_EQ(event->common_pid(), 9999ul);
1418 EXPECT_TRUE(event->has_all_fields());
1419 EXPECT_EQ(event->all_fields().field_uint32(), 1003u);
1420 EXPECT_EQ(event->all_fields().field_pid(), 97);
1421 EXPECT_EQ(event->all_fields().field_dev_32(),
1422 static_cast<uint32_t>(kUserspaceBlockDeviceId));
1423 EXPECT_EQ(event->all_fields().field_inode_32(), 98u);
1424 // TODO(primiano): for some reason this fails on mac.
1425 #if !PERFETTO_BUILDFLAG(PERFETTO_OS_APPLE)
1426 EXPECT_EQ(event->all_fields().field_dev_64(), k64BitUserspaceBlockDeviceId);
1427 #endif
1428 EXPECT_EQ(event->all_fields().field_inode_64(), 99u);
1429 EXPECT_EQ(event->all_fields().field_char_16(), "Hello");
1430 EXPECT_EQ(event->all_fields().field_char(), "Goodbye");
1431 EXPECT_EQ(event->all_fields().field_data_loc(), "Hello");
1432 EXPECT_EQ(event->all_fields().field_char_star(), "my_printk_format_string");
1433 EXPECT_THAT(metadata.pids, Contains(97));
1434 EXPECT_EQ(metadata.inode_and_device.size(), 2U);
1435 EXPECT_THAT(metadata.inode_and_device,
1436 Contains(Pair(98u, kUserspaceBlockDeviceId)));
1437 EXPECT_THAT(metadata.inode_and_device,
1438 Contains(Pair(99u, k64BitUserspaceBlockDeviceId)));
1439 }
1440
1441 TEST(CpuReaderTest, SysEnterEvent) {
1442 BinaryWriter writer;
1443 ProtoTranslationTable* table = GetTable("synthetic");
1444 FtraceDataSourceConfig ds_config = EmptyConfig();
1445
1446 const auto kSysEnterId = static_cast<uint16_t>(
1447 table->EventToFtraceId(GroupAndName("raw_syscalls", "sys_enter")));
1448 ASSERT_GT(kSysEnterId, 0ul);
1449 constexpr uint32_t kPid = 23;
1450 constexpr uint32_t kFd = 7;
1451 constexpr auto kSyscall = SYS_close;
1452
1453 writer.Write<int32_t>(1001); // Common field.
1454 writer.Write<int32_t>(kPid); // Common pid
1455 writer.Write<int64_t>(kSyscall); // id
1456 for (uint32_t i = 0; i < 6; ++i) {
1457 writer.Write<uint64_t>(kFd + i); // args
1458 }
1459
1460 auto input = writer.GetCopy();
1461 auto length = writer.written();
1462
1463 BundleProvider bundle_provider(base::GetSysPageSize());
1464 FtraceMetadata metadata{};
1465
1466 ASSERT_TRUE(CpuReader::ParseEvent(
1467 kSysEnterId, input.get(), input.get() + length, table, &ds_config,
1468 bundle_provider.writer()->add_event(), &metadata));
1469
1470 std::unique_ptr<protos::gen::FtraceEventBundle> a =
1471 bundle_provider.ParseProto();
1472 ASSERT_NE(a, nullptr);
1473 ASSERT_EQ(a->event().size(), 1u);
1474 const auto& event = a->event()[0].sys_enter();
1475 EXPECT_EQ(event.id(), kSyscall);
1476 for (uint32_t i = 0; i < 6; ++i) {
1477 EXPECT_EQ(event.args()[i], kFd + i);
1478 }
1479 }
1480
1481 // MacOS fails on this ...but MacOS will never use cpu_reader so it's
1482 // not a big problem.
1483 #if PERFETTO_BUILDFLAG(PERFETTO_OS_APPLE)
1484 #define MAYBE_SysExitEvent DISABLED_SysExitEvent
1485 #else
1486 #define MAYBE_SysExitEvent SysExitEvent
1487 #endif
1488 TEST(CpuReaderTest, MAYBE_SysExitEvent) {
1489 BinaryWriter writer;
1490 ProtoTranslationTable* table = GetTable("synthetic");
1491 FtraceDataSourceConfig ds_config = EmptyConfig();
1492 const auto syscalls = SyscallTable::FromCurrentArch();
1493
1494 const auto kSysExitId = static_cast<uint16_t>(
1495 table->EventToFtraceId(GroupAndName("raw_syscalls", "sys_exit")));
1496 ASSERT_GT(kSysExitId, 0ul);
1497 constexpr pid_t kPid = 23;
1498 constexpr int64_t kFd = 2;
1499
1500 ds_config.syscalls_returning_fd =
1501 FtraceConfigMuxer::GetSyscallsReturningFds(syscalls);
1502 ASSERT_FALSE(ds_config.syscalls_returning_fd.empty());
1503 const auto syscall_id = *ds_config.syscalls_returning_fd.begin();
1504
1505 writer.Write<int32_t>(1001); // Common field.
1506 writer.Write<int32_t>(kPid); // Common pid
1507 writer.Write<int64_t>(syscall_id); // id
1508 writer.Write<int64_t>(kFd); // ret
1509
1510 auto input = writer.GetCopy();
1511 auto length = writer.written();
1512 BundleProvider bundle_provider(base::GetSysPageSize());
1513 FtraceMetadata metadata{};
1514
1515 ASSERT_TRUE(CpuReader::ParseEvent(
1516 kSysExitId, input.get(), input.get() + length, table, &ds_config,
1517 bundle_provider.writer()->add_event(), &metadata));
1518
1519 std::unique_ptr<protos::gen::FtraceEventBundle> a =
1520 bundle_provider.ParseProto();
1521 ASSERT_NE(a, nullptr);
1522 ASSERT_EQ(a->event().size(), 1u);
1523 const auto& event = a->event()[0].sys_exit();
1524 EXPECT_EQ(event.id(), syscall_id);
1525 EXPECT_EQ(event.ret(), kFd);
1526 EXPECT_THAT(metadata.fds, Contains(std::make_pair(kPid, kFd)));
1527 }
1528
1529 TEST(CpuReaderTest, TaskRenameEvent) {
1530 BundleProvider bundle_provider(base::GetSysPageSize());
1531
1532 BinaryWriter writer;
1533 ProtoTranslationTable* table = GetTable("android_seed_N2F62_3.10.49");
1534 FtraceDataSourceConfig ds_config = EmptyConfig();
1535
1536 constexpr uint32_t kTaskRenameId = 19;
1537
1538 writer.Write<int32_t>(1001); // Common field.
1539 writer.Write<int32_t>(9999); // Common pid
1540 writer.Write<int32_t>(9999); // Pid
1541 writer.WriteFixedString(16, "Hello"); // Old Comm
1542 writer.WriteFixedString(16, "Goodbye"); // New Comm
1543 writer.Write<uint64_t>(10); // flags
1544 writer.Write<int16_t>(10); // oom_score_adj
1545
1546 auto input = writer.GetCopy();
1547 auto length = writer.written();
1548 FtraceMetadata metadata{};
1549
1550 ASSERT_TRUE(CpuReader::ParseEvent(kTaskRenameId, input.get(),
1551 input.get() + length, table, &ds_config,
1552 bundle_provider.writer(), &metadata));
1553 EXPECT_THAT(metadata.rename_pids, Contains(9999));
1554 EXPECT_THAT(metadata.pids, Contains(9999));
1555 }
1556
1557 // Regression test for b/205763418: Kernels without f0a515780393("tracing: Don't
1558 // make assumptions about length of string on task rename") can output non
1559 // zero-terminated strings in some cases. Even though it's a kernel bug, there's
1560 // no point in rejecting that.
1561 TEST(CpuReaderTest, EventNonZeroTerminated) {
1562 BundleProvider bundle_provider(base::GetSysPageSize());
1563
1564 BinaryWriter writer;
1565 ProtoTranslationTable* table = GetTable("android_seed_N2F62_3.10.49");
1566 FtraceDataSourceConfig ds_config = EmptyConfig();
1567
1568 constexpr uint32_t kTaskRenameId = 19;
1569
1570 writer.Write<int32_t>(1001); // Common field.
1571 writer.Write<int32_t>(9999); // Common pid
1572 writer.Write<int32_t>(9999); // Pid
1573 writer.WriteFixedString(16, "Hello"); // Old Comm
1574 std::array<char, 16> newcomm;
1575 memcpy(&newcomm, "0123456789abcdef", sizeof newcomm);
1576 writer.Write(newcomm); // New Comm - not null terminated
1577 writer.Write<uint64_t>(10); // flags
1578 writer.Write<int16_t>(10); // oom_score_adj
1579
1580 auto input = writer.GetCopy();
1581 auto length = writer.written();
1582 FtraceMetadata metadata{};
1583
1584 ASSERT_TRUE(CpuReader::ParseEvent(
1585 kTaskRenameId, input.get(), input.get() + length, table, &ds_config,
1586 bundle_provider.writer()->add_event(), &metadata));
1587 std::unique_ptr<protos::gen::FtraceEventBundle> a =
1588 bundle_provider.ParseProto();
1589 ASSERT_NE(a, nullptr);
1590 ASSERT_EQ(a->event().size(), 1u);
1591 ASSERT_EQ(a->event()[0].task_rename().newcomm(), "0123456789abcdef");
1592 }
1593
1594 // Page with a single sched_switch, no data loss.
1595 static char g_switch_page[] =
1596 R"(
1597 00000000: 2b16 c3be 90b6 0300 4c00 0000 0000 0000 ................
1598 00000010: 1e00 0000 0000 0000 1000 0000 2f00 0103 ................
1599 00000020: 0300 0000 6b73 6f66 7469 7271 642f 3000 ................
1600 00000030: 0000 0000 0300 0000 7800 0000 0100 0000 ................
1601 00000040: 0000 0000 736c 6565 7000 722f 3000 0000 ................
1602 00000050: 0000 0000 950e 0000 7800 0000 0000 0000 ................
1603 )";
1604
1605 // Page with a single sched_switch, header has data loss flag set.
1606 static char g_switch_page_lost_events[] =
1607 R"(
1608 00000000: 2b16 c3be 90b6 0300 4c00 0080 ffff ffff ................
1609 00000010: 1e00 0000 0000 0000 1000 0000 2f00 0103 ................
1610 00000020: 0300 0000 6b73 6f66 7469 7271 642f 3000 ................
1611 00000030: 0000 0000 0300 0000 7800 0000 0100 0000 ................
1612 00000040: 0000 0000 736c 6565 7000 722f 3000 0000 ................
1613 00000050: 0000 0000 950e 0000 7800 0000 0000 0000 ................
1614 )";
1615
1616 // Page with invalid data.
1617 static char g_invalid_page[] =
1618 R"(
1619 00000000: 2b16 c3be 90b6 0300 4b00 0000 0000 0000 ................
1620 00000010: 1e00 0000 0000 0000 1000 0000 2f00 0103 ................
1621 00000020: 0300 0000 6b73 6f66 7469 7271 642f 3000 ................
1622 00000030: 0000 0000 0300 0000 7800 0000 0100 0000 ................
1623 00000040: 0000 0000 736c 6565 7000 722f 3000 0000 ................
1624 00000050: 0000 0000 950e 0000 7800 0000 0000 0000 ................
1625 )";
1626
1627 TEST(CpuReaderTest, NewPacketOnLostEvents) {
1628 auto page_ok = PageFromXxd(g_switch_page);
1629 auto page_loss = PageFromXxd(g_switch_page_lost_events);
1630
1631 std::vector<const void*> test_page_order = {
1632 page_ok.get(), page_ok.get(), page_ok.get(), page_loss.get(),
1633 page_loss.get(), page_ok.get(), page_ok.get(), page_ok.get()};
1634
1635 // Prepare a buffer with 8 contiguous pages, with the above contents.
1636 static constexpr size_t kTestPages = 8;
1637
1638 std::unique_ptr<uint8_t[]> buf(
1639 new uint8_t[base::GetSysPageSize() * kTestPages]());
1640 for (size_t i = 0; i < kTestPages; i++) {
1641 void* dest = buf.get() + (i * base::GetSysPageSize());
1642 memcpy(dest, static_cast<const void*>(test_page_order[i]),
1643 base::GetSysPageSize());
1644 }
1645
1646 ProtoTranslationTable* table = GetTable("synthetic");
1647 FtraceMetadata metadata{};
1648 FtraceDataSourceConfig ds_config = EmptyConfig();
1649 ds_config.event_filter.AddEnabledEvent(
1650 table->EventToFtraceId(GroupAndName("sched", "sched_switch")));
1651
1652 TraceWriterForTesting trace_writer;
1653 auto compact_sched_buf = std::make_unique<CompactSchedBuffer>();
1654 base::FlatSet<protos::pbzero::FtraceParseStatus> parse_errors;
1655 uint64_t last_read_event_ts = 0;
1656 bool success = CpuReader::ProcessPagesForDataSource(
1657 &trace_writer, &metadata, /*cpu=*/1, &ds_config, &parse_errors,
1658 &last_read_event_ts, buf.get(), kTestPages, compact_sched_buf.get(),
1659 table, /*symbolizer=*/nullptr,
1660 /*ftrace_clock_snapshot=*/nullptr,
1661 protos::pbzero::FTRACE_CLOCK_UNSPECIFIED);
1662
1663 EXPECT_TRUE(success);
1664
1665 // Each packet should contain the parsed contents of a contiguous run of pages
1666 // without data loss.
1667 // So we should get three packets (each page has 1 event):
1668 // [3 events] [1 event] [4 events].
1669 auto packets = trace_writer.GetAllTracePackets();
1670
1671 ASSERT_EQ(3u, packets.size());
1672 EXPECT_FALSE(packets[0].ftrace_events().lost_events());
1673 EXPECT_EQ(3u, packets[0].ftrace_events().event().size());
1674
1675 EXPECT_TRUE(packets[1].ftrace_events().lost_events());
1676 EXPECT_EQ(1u, packets[1].ftrace_events().event().size());
1677
1678 EXPECT_TRUE(packets[2].ftrace_events().lost_events());
1679 EXPECT_EQ(4u, packets[2].ftrace_events().event().size());
1680 }
1681
1682 TEST(CpuReaderTest, ProcessPagesForDataSourceError) {
1683 auto page_ok = PageFromXxd(g_switch_page);
1684 auto page_err = PageFromXxd(g_invalid_page);
1685
1686 std::vector<const void*> test_page_order = {
1687 page_ok.get(), page_ok.get(), page_ok.get(), page_err.get(),
1688 page_ok.get(), page_ok.get(), page_err.get(), page_ok.get()};
1689
1690 // Prepare a buffer with 8 contiguous pages, with the above contents.
1691 static constexpr size_t kTestPages = 8;
1692
1693 std::unique_ptr<uint8_t[]> buf(
1694 new uint8_t[base::GetSysPageSize() * kTestPages]());
1695 for (size_t i = 0; i < kTestPages; i++) {
1696 void* dest = buf.get() + (i * base::GetSysPageSize());
1697 memcpy(dest, static_cast<const void*>(test_page_order[i]),
1698 base::GetSysPageSize());
1699 }
1700
1701 ProtoTranslationTable* table = GetTable("synthetic");
1702 FtraceMetadata metadata{};
1703 FtraceDataSourceConfig ds_config = EmptyConfig();
1704 ds_config.event_filter.AddEnabledEvent(
1705 table->EventToFtraceId(GroupAndName("sched", "sched_switch")));
1706
1707 TraceWriterForTesting trace_writer;
1708 auto compact_sched_buf = std::make_unique<CompactSchedBuffer>();
1709 base::FlatSet<protos::pbzero::FtraceParseStatus> parse_errors;
1710 uint64_t last_read_event_ts = 0;
1711 bool success = CpuReader::ProcessPagesForDataSource(
1712 &trace_writer, &metadata, /*cpu=*/1, &ds_config, &parse_errors,
1713 &last_read_event_ts, buf.get(), kTestPages, compact_sched_buf.get(),
1714 table, /*symbolizer=*/nullptr,
1715 /*ftrace_clock_snapshot=*/nullptr,
1716 protos::pbzero::FTRACE_CLOCK_UNSPECIFIED);
1717
1718 EXPECT_FALSE(success);
1719
1720 EXPECT_EQ(
1721 parse_errors.count(FtraceParseStatus::FTRACE_STATUS_ABI_END_OVERFLOW),
1722 1u);
1723
1724 // 2 invalid pages -> 2 serialised parsing errors
1725 std::vector<protos::gen::TracePacket> packets =
1726 trace_writer.GetAllTracePackets();
1727 ASSERT_EQ(packets.size(), 1u);
1728 protos::gen::FtraceEventBundle bundle = packets[0].ftrace_events();
1729 using Bundle = protos::gen::FtraceEventBundle;
1730 using Error = Bundle::FtraceError;
1731 using protos::gen::FtraceParseStatus::FTRACE_STATUS_ABI_END_OVERFLOW;
1732 EXPECT_THAT(
1733 bundle,
1734 Property(&Bundle::error,
1735 ElementsAre(
1736 Property(&Error::status, FTRACE_STATUS_ABI_END_OVERFLOW),
1737 Property(&Error::status, FTRACE_STATUS_ABI_END_OVERFLOW))));
1738 }
1739
1740 // Page containing an absolute timestamp (RINGBUF_TYPE_TIME_STAMP).
1741 static char g_abs_timestamp[] =
1742 R"(
1743 00000000: 8949 fbfb 38e4 0400 6407 0000 0000 0000 .I..8...d.......
1744 00000010: 5032 0a2d 3b01 0100 0000 0000 7377 6170 P2.-;.......swap
1745 00000020: 7065 722f 3000 0000 0000 0000 0000 0000 per/0...........
1746 00000030: 7800 0000 0000 0000 0000 0000 6776 6673 x...........gvfs
1747 00000040: 2d61 6663 2d76 6f6c 756d 6500 6483 0000 -afc-volume.d...
1748 00000050: 7800 0000 f0de 1700 3b01 0100 6483 0000 x.......;...d...
1749 00000060: 6776 6673 2d61 6663 2d76 6f6c 756d 6500 gvfs-afc-volume.
1750 00000070: 6483 0000 7800 0000 0100 0000 0000 0000 d...x...........
1751 00000080: 7377 6170 7065 722f 3000 0000 0000 0000 swapper/0.......
1752 00000090: 0000 0000 7800 0000 aaa1 5c08 0401 1100 ....x.....\.....
1753 000000a0: 0000 0000 88fc 31eb 029f ffff 609e d3c0 ......1.....`...
1754 000000b0: ffff ffff 0076 b4a1 029f ffff 0020 0000 .....v....... ..
1755 000000c0: ffff ffff e477 1700 0301 1100 0000 0000 .....w..........
1756 000000d0: 88fc 31eb 029f ffff aa26 0100 3e01 1100 ..1......&..>...
1757 000000e0: 0000 0000 6b77 6f72 6b65 722f 7538 3a35 ....kworker/u8:5
1758 000000f0: 0000 0000 24c0 0c00 7800 0000 0100 0000 ....$...x.......
1759 00000100: 0300 0000 90e6 e700 3b01 0100 0000 0000 ........;.......
1760 00000110: 7377 6170 7065 722f 3000 0000 0000 0000 swapper/0.......
1761 00000120: 0000 0000 7800 0000 0000 0000 0000 0000 ....x...........
1762 00000130: 6b77 6f72 6b65 722f 7538 3a35 0000 0000 kworker/u8:5....
1763 00000140: 24c0 0c00 7800 0000 aa56 0300 3e01 0100 $...x....V..>...
1764 00000150: 24c0 0c00 6b77 6f72 6b65 722f 7538 3a31 $...kworker/u8:1
1765 00000160: 0000 0000 8eb5 0c00 7800 0000 0100 0000 ........x.......
1766 00000170: 0300 0000 06eb 0300 0201 0000 24c0 0c00 ............$...
1767 00000180: 6026 f22a 049f ffff f0e4 4cc0 ffff ffff `&.*......L.....
1768 00000190: ca45 0f00 3e01 0100 24c0 0c00 646d 6372 .E..>...$...dmcr
1769 000001a0: 7970 745f 7772 6974 652f 3200 2601 0000 ypt_write/2.&...
1770 000001b0: 7800 0000 0100 0000 0100 0000 c617 0200 x...............
1771 000001c0: 0101 0000 24c0 0c00 6026 f22a 049f ffff ....$...`&.*....
1772 000001d0: f0e4 4cc0 ffff ffff a47c 0000 0301 0100 ..L......|......
1773 000001e0: 24c0 0c00 6015 f22a 049f ffff 0685 0000 $...`..*........
1774 000001f0: 0201 0000 24c0 0c00 a05d f22a 049f ffff ....$....].*....
1775 00000200: f0e4 4cc0 ffff ffff c6dd 0800 0101 0000 ..L.............
1776 00000210: 24c0 0c00 a05d f22a 049f ffff f0e4 4cc0 $....].*......L.
1777 00000220: ffff ffff 8444 0000 0301 0100 24c0 0c00 .....D......$...
1778 00000230: 6059 f22a 049f ffff e672 0000 0201 0000 `Y.*.....r......
1779 00000240: 24c0 0c00 e050 f22a 049f ffff f0e4 4cc0 $....P.*......L.
1780 00000250: ffff ffff 4673 0a00 0101 0000 24c0 0c00 ....Fs......$...
1781 00000260: e050 f22a 049f ffff f0e4 4cc0 ffff ffff .P.*......L.....
1782 00000270: 04ca 0000 0301 0100 24c0 0c00 2000 f22a ........$... ..*
1783 00000280: 049f ffff 86b1 0000 0201 0000 24c0 0c00 ............$...
1784 00000290: 6015 f22a 049f ffff f0e4 4cc0 ffff ffff `..*......L.....
1785 000002a0: e640 0c00 0101 0000 24c0 0c00 6015 f22a .@......$...`..*
1786 000002b0: 049f ffff f0e4 4cc0 ffff ffff 64b4 0000 ......L.....d...
1787 000002c0: 0301 0100 24c0 0c00 2011 f22a 049f ffff ....$... ..*....
1788 000002d0: 66b9 0000 0201 0000 24c0 0c00 a06e f22a f.......$....n.*
1789 000002e0: 049f ffff f0e4 4cc0 ffff ffff 6ae1 4200 ......L.....j.B.
1790 000002f0: 3e01 1100 24c0 0c00 6a62 6432 2f64 6d2d >...$...jbd2/dm-
1791 00000300: 312d 3800 0000 0000 6a01 0000 7800 0000 1-8.....j...x...
1792 00000310: 0100 0000 0300 0000 269b 0400 0101 0000 ........&.......
1793 00000320: 24c0 0c00 a06e f22a 049f ffff f0e4 4cc0 $....n.*......L.
1794 00000330: ffff ffff ff9d 6fb6 1f87 9c00 1000 0000 ......o.........
1795 00000340: 3b01 0100 24c0 0c00 6b77 6f72 6b65 722f ;...$...kworker/
1796 00000350: 7538 3a35 0000 0000 24c0 0c00 7800 0000 u8:5....$...x...
1797 00000360: 8000 0000 0000 0000 7377 6170 7065 722f ........swapper/
1798 00000370: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
1799 00000380: 6ad2 3802 0401 1100 0000 0000 c800 384b j.8...........8K
1800 00000390: 029f ffff 7018 75c0 ffff ffff 00ac edce ....p.u.........
1801 000003a0: 039f ffff 0020 0000 0000 0000 c4de 0000 ..... ..........
1802 000003b0: 0301 1100 0000 0000 c800 384b 029f ffff ..........8K....
1803 000003c0: 8a27 0100 3e01 1100 0000 0000 6b77 6f72 .'..>.......kwor
1804 000003d0: 6b65 722f 303a 3200 0000 0000 48b4 0c00 ker/0:2.....H...
1805 000003e0: 7800 0000 0100 0000 0000 0000 706d 0800 x...........pm..
1806 000003f0: 3b01 0100 0000 0000 7377 6170 7065 722f ;.......swapper/
1807 00000400: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
1808 00000410: 0000 0000 0000 0000 6b77 6f72 6b65 722f ........kworker/
1809 00000420: 303a 3200 0000 0000 48b4 0c00 7800 0000 0:2.....H...x...
1810 00000430: 4636 0200 0201 0000 48b4 0c00 c800 384b F6......H.....8K
1811 00000440: 029f ffff 7018 75c0 ffff ffff ca56 0500 ....p.u......V..
1812 00000450: 0401 0100 48b4 0c00 606a ad55 029f ffff ....H...`j.U....
1813 00000460: f0e4 4cc0 ffff ffff 002c 04d0 039f ffff ..L......,......
1814 00000470: 0020 0000 ffff ffff e435 0000 0301 0100 . .......5......
1815 00000480: 48b4 0c00 606a ad55 029f ffff ca67 0000 H...`j.U.....g..
1816 00000490: 3e01 0100 48b4 0c00 6b77 6f72 6b65 722f >...H...kworker/
1817 000004a0: 7538 3a35 0000 0000 24c0 0c00 7800 0000 u8:5....$...x...
1818 000004b0: 0100 0000 0000 0000 e6fc 0200 0101 0000 ................
1819 000004c0: 48b4 0c00 c800 384b 029f ffff 7018 75c0 H.....8K....p.u.
1820 000004d0: ffff ffff 708f 0200 3b01 0100 48b4 0c00 ....p...;...H...
1821 000004e0: 6b77 6f72 6b65 722f 303a 3200 0000 0000 kworker/0:2.....
1822 000004f0: 48b4 0c00 7800 0000 8000 0000 0000 0000 H...x...........
1823 00000500: 6b77 6f72 6b65 722f 7538 3a35 0000 0000 kworker/u8:5....
1824 00000510: 24c0 0c00 7800 0000 0614 0100 0201 0000 $...x...........
1825 00000520: 24c0 0c00 606a ad55 029f ffff f0e4 4cc0 $...`j.U......L.
1826 00000530: ffff ffff ea7e 0c00 3e01 0100 24c0 0c00 .....~..>...$...
1827 00000540: 646d 6372 7970 745f 7772 6974 652f 3200 dmcrypt_write/2.
1828 00000550: 2601 0000 7800 0000 0100 0000 0100 0000 &...x...........
1829 00000560: 4645 0200 0101 0000 24c0 0c00 606a ad55 FE......$...`j.U
1830 00000570: 029f ffff f0e4 4cc0 ffff ffff b043 0900 ......L......C..
1831 00000580: 3b01 0100 24c0 0c00 6b77 6f72 6b65 722f ;...$...kworker/
1832 00000590: 7538 3a35 0000 0000 24c0 0c00 7800 0000 u8:5....$...x...
1833 000005a0: 8000 0000 0000 0000 7377 6170 7065 722f ........swapper/
1834 000005b0: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
1835 000005c0: ca7a 3900 0401 1100 0000 0000 48bc d5a1 .z9.........H...
1836 000005d0: 029f ffff 10e2 62bb ffff ffff 00e0 40d0 ......b.......@.
1837 000005e0: 039f ffff 0020 0000 0000 0000 c4bb 0000 ..... ..........
1838 000005f0: 0301 1100 0000 0000 48bc d5a1 029f ffff ........H.......
1839 00000600: 2aea 0000 3e01 1100 0000 0000 6b77 6f72 *...>.......kwor
1840 00000610: 6b65 722f 303a 3148 0000 0000 cfc1 0c00 ker/0:1H........
1841 00000620: 6400 0000 0100 0000 0000 0000 90bb 0600 d...............
1842 00000630: 3b01 0100 0000 0000 7377 6170 7065 722f ;.......swapper/
1843 00000640: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
1844 00000650: 0000 0000 0000 0000 6b77 6f72 6b65 722f ........kworker/
1845 00000660: 303a 3148 0000 0000 cfc1 0c00 6400 0000 0:1H........d...
1846 00000670: 8617 0200 0201 0000 cfc1 0c00 48bc d5a1 ............H...
1847 00000680: 029f ffff 10e2 62bb ffff ffff c68f 0400 ......b.........
1848 00000690: 0101 0000 cfc1 0c00 48bc d5a1 029f ffff ........H.......
1849 000006a0: 10e2 62bb ffff ffff b063 0300 3b01 0100 ..b......c..;...
1850 000006b0: cfc1 0c00 6b77 6f72 6b65 722f 303a 3148 ....kworker/0:1H
1851 000006c0: 0000 0000 cfc1 0c00 6400 0000 8000 0000 ........d.......
1852 000006d0: 0000 0000 7377 6170 7065 722f 3000 0000 ....swapper/0...
1853 000006e0: 0000 0000 0000 0000 7800 0000 4a10 ad01 ........x...J...
1854 000006f0: 3e01 1100 0000 0000 6a62 6432 2f64 6d2d >.......jbd2/dm-
1855 00000700: 312d 3800 0000 0000 6a01 0000 7800 0000 1-8.....j...x...
1856 00000710: 0100 0000 0300 0000 ea27 b900 3e01 1100 .........'..>...
1857 00000720: 0000 0000 7263 755f 7363 6865 6400 0000 ....rcu_sched...
1858 00000730: 0000 0000 0d00 0000 7800 0000 0100 0000 ........x.......
1859 00000740: 0200 0000 3d00 0000 2c00 0000 0000 0000 ....=...,.......
1860 00000750: 0000 0000 0000 0000 0000 0000 0000 0000 ................
1861 00000760: 0000 0000 0000 0000 0000 0000 0000 0000 ................
1862 00000770: 0000 0000 0000 0000 0000 0000 0000 0000 ................
1863 )";
1864
TEST_F(CpuReaderParsePagePayloadTest,ParseAbsoluteTimestamp)1865 TEST_F(CpuReaderParsePagePayloadTest, ParseAbsoluteTimestamp) {
1866 auto page = PageFromXxd(g_abs_timestamp);
1867
1868 // Hand-build a translation table that handles sched_switch for this test
1869 // page. We cannot reuse the test data format file, since the ftrace id for
1870 // sched_switch in this page is different.
1871 std::vector<Field> common_fields;
1872 { // common_pid
1873 common_fields.emplace_back(Field{});
1874 Field* field = &common_fields.back();
1875 field->ftrace_offset = 4;
1876 field->ftrace_size = 4;
1877 field->ftrace_type = kFtraceCommonPid32;
1878 field->proto_field_id = 2;
1879 field->proto_field_type = ProtoSchemaType::kInt32;
1880 SetTranslationStrategy(field->ftrace_type, field->proto_field_type,
1881 &field->strategy);
1882 }
1883 using Switch = protos::gen::SchedSwitchFtraceEvent;
1884 Event sched_switch_event{
1885 "sched_switch",
1886 "sched",
1887 {
1888 {8, 16, FtraceFieldType::kFtraceFixedCString, "prev_comm",
1889 Switch::kPrevCommFieldNumber, ProtoSchemaType::kString,
1890 TranslationStrategy::kInvalidTranslationStrategy},
1891 {24, 4, FtraceFieldType::kFtracePid32, "prev_pid",
1892 Switch::kPrevPidFieldNumber, ProtoSchemaType::kInt32,
1893 TranslationStrategy::kInvalidTranslationStrategy},
1894 {28, 4, FtraceFieldType::kFtraceInt32, "prev_prio",
1895 Switch::kPrevPrioFieldNumber, ProtoSchemaType::kInt32,
1896 TranslationStrategy::kInvalidTranslationStrategy},
1897 {32, 8, FtraceFieldType::kFtraceInt64, "prev_state",
1898 Switch::kPrevStateFieldNumber, ProtoSchemaType::kInt64,
1899 TranslationStrategy::kInvalidTranslationStrategy},
1900 {40, 16, FtraceFieldType::kFtraceFixedCString, "next_comm",
1901 Switch::kNextCommFieldNumber, ProtoSchemaType::kString,
1902 TranslationStrategy::kInvalidTranslationStrategy},
1903 {56, 4, FtraceFieldType::kFtracePid32, "next_pid",
1904 Switch::kNextPidFieldNumber, ProtoSchemaType::kInt32,
1905 TranslationStrategy::kInvalidTranslationStrategy},
1906 {60, 4, FtraceFieldType::kFtraceInt32, "next_prio",
1907 Switch::kNextPrioFieldNumber, ProtoSchemaType::kInt32,
1908 TranslationStrategy::kInvalidTranslationStrategy},
1909 },
1910 /*ftrace_event_id=*/315,
1911 /*proto_field_id=*/4,
1912 /*size=*/64};
1913 for (Field& field : sched_switch_event.fields) {
1914 SetTranslationStrategy(field.ftrace_type, field.proto_field_type,
1915 &field.strategy);
1916 }
1917 std::vector<Event> events;
1918 events.emplace_back(std::move(sched_switch_event));
1919
1920 NiceMock<MockFtraceProcfs> mock_ftrace;
1921 PrintkMap printk_formats;
1922 ProtoTranslationTable translation_table(
1923 &mock_ftrace, events, std::move(common_fields),
1924 ProtoTranslationTable::DefaultPageHeaderSpecForTesting(),
1925 InvalidCompactSchedEventFormatForTesting(), printk_formats);
1926 ProtoTranslationTable* table = &translation_table;
1927
1928 FtraceDataSourceConfig ds_config = EmptyConfig();
1929 ds_config.event_filter.AddEnabledEvent(
1930 table->EventToFtraceId(GroupAndName("sched", "sched_switch")));
1931
1932 const uint8_t* parse_pos = page.get();
1933 std::optional<CpuReader::PageHeader> page_header =
1934 CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
1935
1936 const uint8_t* page_end = page.get() + base::GetSysPageSize();
1937 ASSERT_TRUE(page_header.has_value());
1938 EXPECT_FALSE(page_header->lost_events);
1939 EXPECT_LE(parse_pos + page_header->size, page_end);
1940
1941 FtraceParseStatus status = CpuReader::ParsePagePayload(
1942 parse_pos, &page_header.value(), table, &ds_config,
1943 CreateBundler(ds_config), &metadata_, &last_read_event_ts_);
1944
1945 EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_OK);
1946
1947 auto bundle = GetBundle();
1948
1949 // There should be 9 sched_switch events within the above page.
1950 // We assert that all of their timestamps are exactly as expected.
1951 //
1952 // The key record that we're testing is an absolute timestamp
1953 // (RINGBUF_TYPE_TIME_STAMP) between the 3rd and 4th sched_switch events.
1954 //
1955 // This timestamp record starts at 0x334 bytes into the page.
1956 // The event header (first 4 bytes): 0xb66f9dff
1957 // -> type (bottom 5 bits): 31 (RINGBUF_TYPE_TIME_STAMP)
1958 // -> bottom 27 bits of ts: 0x5b37cef
1959 // Next 4 bytes have the top bits (28..59) of ts.
1960 // -> post-shift: 0x4e438f8000000
1961 // Adding the two parts of the timestamp, we get: 1376833332542703.
1962 //
1963 // The next event (sched_switch at 0x33c) after this timestamp has a
1964 // delta-timestamp of 0 in its event header, so we expect the 4th
1965 // sched_switch to have a timestamp of exactly 1376833332542703.
1966 EXPECT_EQ(bundle.event().size(), 9u);
1967
1968 std::vector<uint64_t> switch_timestamps;
1969 for (const auto& e : bundle.event())
1970 switch_timestamps.push_back(e.timestamp());
1971
1972 uint64_t expected_timestamps[] = {
1973 1376833327307547ull, 1376833327356434ull, 1376833332265799ull,
1974 1376833332542703ull, 1376833333729055ull, 1376833333757142ull,
1975 1376833333808564ull, 1376833333943445ull, 1376833333964012ull};
1976
1977 ASSERT_THAT(switch_timestamps,
1978 testing::ElementsAreArray(expected_timestamps));
1979 }
1980
TEST(CpuReaderTest,TranslateBlockDeviceIDToUserspace)1981 TEST(CpuReaderTest, TranslateBlockDeviceIDToUserspace) {
1982 const uint32_t kKernelBlockDeviceId = 271581216;
1983 const BlockDeviceID kUserspaceBlockDeviceId = 66336;
1984 const uint64_t k64BitKernelBlockDeviceId = 4442450946;
1985 const BlockDeviceID k64BitUserspaceBlockDeviceId =
1986 static_cast<BlockDeviceID>(17594983681026ULL);
1987
1988 EXPECT_EQ(CpuReader::TranslateBlockDeviceIDToUserspace<uint32_t>(
1989 kKernelBlockDeviceId),
1990 kUserspaceBlockDeviceId);
1991 EXPECT_EQ(CpuReader::TranslateBlockDeviceIDToUserspace<uint64_t>(
1992 k64BitKernelBlockDeviceId),
1993 k64BitUserspaceBlockDeviceId);
1994 }
1995
1996 // clang-format off
1997 // # tracer: nop
1998 // #
1999 // # entries-in-buffer/entries-written: 1041/238740 #P:8
2000 // #
2001 // # _-----=> irqs-off
2002 // # / _----=> need-resched
2003 // # | / _---=> hardirq/softirq
2004 // # || / _--=> preempt-depth
2005 // # ||| / delay
2006 // # TASK-PID CPU# |||| TIMESTAMP FUNCTION
2007 // # | | | |||| | |
2008 // android.bg-1668 [000] ...1 174991.234105: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
2009 // android.bg-1668 [000] ...1 174991.234108: ext4_mark_inode_dirty: dev 259,32 ino 2883605 caller ext4_dirty_inode+0x48/0x68
2010 // android.bg-1668 [000] ...1 174991.234118: ext4_da_write_begin: dev 259,32 ino 2883605 pos 20480 len 4096 flags 0
2011 // 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
2012 // android.bg-1668 [000] ...1 174991.234133: ext4_es_lookup_extent_enter: dev 259,32 ino 2883605 lblk 5
2013 // android.bg-1668 [000] ...1 174991.234135: ext4_es_lookup_extent_exit: dev 259,32 ino 2883605 found 1 [5/4294967290) 576460752303423487 H0x10
2014 // 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
2015 // android.bg-1668 [000] ...1 174991.234142: ext4_es_insert_extent: dev 259,32 ino 2883605 es [5/1) mapped 576460752303423487 status D
2016 // android.bg-1668 [000] ...1 174991.234153: ext4_da_write_end: dev 259,32 ino 2883605 pos 20480 len 4096 copied 4096
2017 // android.bg-1668 [000] ...1 174991.234158: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
2018 // android.bg-1668 [000] ...1 174991.234160: ext4_mark_inode_dirty: dev 259,32 ino 2883605 caller ext4_dirty_inode+0x48/0x68
2019 // android.bg-1668 [000] ...1 174991.234170: ext4_da_write_begin: dev 259,32 ino 2883605 pos 24576 len 2968 flags 0
2020 // 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
2021 // android.bg-1668 [000] ...1 174991.234184: ext4_es_lookup_extent_enter: dev 259,32 ino 2883605 lblk 6
2022 // android.bg-1668 [000] ...1 174991.234187: ext4_es_lookup_extent_exit: dev 259,32 ino 2883605 found 1 [6/4294967289) 576460752303423487 H0x10
2023 // 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
2024 // android.bg-1668 [000] ...1 174991.234193: ext4_es_insert_extent: dev 259,32 ino 2883605 es [6/1) mapped 576460752303423487 status D
2025 // android.bg-1668 [000] ...1 174991.234203: ext4_da_write_end: dev 259,32 ino 2883605 pos 24576 len 2968 copied 2968
2026 // android.bg-1668 [000] ...1 174991.234209: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
2027 // android.bg-1668 [000] ...1 174991.234211: ext4_mark_inode_dirty: dev 259,32 ino 2883605 caller ext4_dirty_inode+0x48/0x68
2028 // android.bg-1668 [000] ...1 174991.234262: ext4_sync_file_enter: dev 259,32 ino 2883605 parent 2883592 datasync 0
2029 // 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
2030 // android.bg-1668 [000] ...1 174991.234287: ext4_journal_start: dev 259,32 blocks, 10 rsv_blocks, 0 caller ext4_writepages+0x6a4/0x119c
2031 // 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
2032 // android.bg-1668 [000] ...1 174991.234319: ext4_da_write_pages_extent: dev 259,32 ino 2883605 lblk 0 len 7 flags 0x200
2033 // android.bg-1668 [000] ...1 174991.234322: ext4_es_lookup_extent_enter: dev 259,32 ino 2883605 lblk 0
2034 // android.bg-1668 [000] ...1 174991.234324: ext4_es_lookup_extent_exit: dev 259,32 ino 2883605 found 1 [0/7) 576460752303423487 D0x10
2035 // 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
2036 // 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
2037 // 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
2038 // 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
2039 // android.bg-1668 [000] ...1 174991.234409: ext4_mark_inode_dirty: dev 259,32 ino 2883605 caller __ext4_ext_dirty+0x104/0x170
2040 // android.bg-1668 [000] ...1 174991.234420: ext4_get_reserved_cluster_alloc: dev 259,32 ino 2883605 lblk 0 len 7
2041 // 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
2042 // 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
2043 // android.bg-1668 [000] ...1 174991.234441: ext4_es_lookup_extent_enter: dev 259,32 ino 3 lblk 1
2044 // android.bg-1668 [000] ...1 174991.234445: ext4_es_lookup_extent_exit: dev 259,32 ino 3 found 1 [0/2) 9255 W0x10
2045 // 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
2046 // android.bg-1668 [000] ...1 174991.234460: ext4_es_lookup_extent_enter: dev 259,32 ino 4 lblk 1
2047 // android.bg-1668 [000] ...1 174991.234463: ext4_es_lookup_extent_exit: dev 259,32 ino 4 found 1 [0/2) 9257 W0x10
2048 // android.bg-1668 [000] ...1 174991.234471: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
2049 // android.bg-1668 [000] ...1 174991.234474: ext4_mark_inode_dirty: dev 259,32 ino 2883605 caller ext4_dirty_inode+0x48/0x68
2050 // 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
2051 // android.bg-1668 [000] ...1 174991.234484: ext4_es_insert_extent: dev 259,32 ino 2883605 es [0/7) mapped 2155471 status W
2052 // android.bg-1668 [000] ...1 174991.234547: ext4_mark_inode_dirty: dev 259,32 ino 2883605 caller ext4_writepages+0xdc0/0x119c
2053 // android.bg-1668 [000] ...1 174991.234604: ext4_journal_start: dev 259,32 blocks, 10 rsv_blocks, 0 caller ext4_writepages+0x6a4/0x119c
2054 // 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
2055 // 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
2056 // Profile Saver-5504 [000] ...1 175002.711928: ext4_discard_preallocations: dev 259,32 ino 1311176
2057 // Profile Saver-5504 [000] ...1 175002.714165: ext4_begin_ordered_truncate: dev 259,32 ino 1311176 new_size 0
2058 // Profile Saver-5504 [000] ...1 175002.714172: ext4_journal_start: dev 259,32 blocks, 3 rsv_blocks, 0 caller ext4_setattr+0x5b4/0x788
2059 // Profile Saver-5504 [000] ...1 175002.714218: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_setattr+0x65c/0x788
2060 // Profile Saver-5504 [000] ...1 175002.714277: ext4_invalidatepage: dev 259,32 ino 1311176 page_index 0 offset 0 length 4096
2061 // Profile Saver-5504 [000] ...1 175002.714281: ext4_releasepage: dev 259,32 ino 1311176 page_index 0
2062 // Profile Saver-5504 [000] ...1 175002.714295: ext4_invalidatepage: dev 259,32 ino 1311176 page_index 1 offset 0 length 4096
2063 // Profile Saver-5504 [000] ...1 175002.714296: ext4_releasepage: dev 259,32 ino 1311176 page_index 1
2064 // Profile Saver-5504 [000] ...1 175002.714315: ext4_truncate_enter: dev 259,32 ino 1311176 blocks 24
2065 // Profile Saver-5504 [000] ...1 175002.714318: ext4_journal_start: dev 259,32 blocks, 10 rsv_blocks, 0 caller ext4_truncate+0x258/0x4b8
2066 // Profile Saver-5504 [000] ...1 175002.714322: ext4_discard_preallocations: dev 259,32 ino 1311176
2067 // Profile Saver-5504 [000] ...1 175002.714324: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_ext_truncate+0x24/0xc8
2068 // Profile Saver-5504 [000] ...1 175002.714328: ext4_es_remove_extent: dev 259,32 ino 1311176 es [0/4294967295)
2069 // 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
2070 // Profile Saver-5504 [000] ...1 175002.714338: ext4_ext_remove_space: dev 259,32 ino 1311176 since 0 end 4294967294 depth 0
2071 // 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
2072 // 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
2073 // Profile Saver-5504 [000] ...1 175002.714354: ext4_free_blocks: dev 259,32 ino 1311176 mode 0100600 block 5276994 count 2 flags 1ST_CLUSTER
2074 // Profile Saver-5504 [000] ...1 175002.714365: ext4_mballoc_free: dev 259,32 inode 1311176 extent 161/1346/2
2075 // 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
2076 // Profile Saver-5504 [000] ...1 175002.714391: ext4_es_lookup_extent_enter: dev 259,32 ino 3 lblk 4
2077 // Profile Saver-5504 [000] ...1 175002.714394: ext4_es_lookup_extent_exit: dev 259,32 ino 3 found 1 [4/1) 557094 W0x10
2078 // 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
2079 // Profile Saver-5504 [000] ...1 175002.714404: ext4_es_lookup_extent_enter: dev 259,32 ino 4 lblk 8
2080 // Profile Saver-5504 [000] ...1 175002.714406: ext4_es_lookup_extent_exit: dev 259,32 ino 4 found 1 [8/3) 7376914 W0x10
2081 // Profile Saver-5504 [000] ...1 175002.714413: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
2082 // Profile Saver-5504 [000] ...1 175002.714414: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
2083 // Profile Saver-5504 [000] ...1 175002.714420: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller __ext4_ext_dirty+0x104/0x170
2084 // 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
2085 // Profile Saver-5504 [000] ...1 175002.714425: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller __ext4_ext_dirty+0x104/0x170
2086 // Profile Saver-5504 [000] ...1 175002.714433: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_truncate+0x3c4/0x4b8
2087 // Profile Saver-5504 [000] ...1 175002.714436: ext4_truncate_exit: dev 259,32 ino 1311176 blocks 8
2088 // Profile Saver-5504 [000] ...1 175002.714437: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
2089 // Profile Saver-5504 [000] ...1 175002.714438: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
2090 // Profile Saver-5504 [000] ...1 175002.714462: ext4_da_write_begin: dev 259,32 ino 1311176 pos 0 len 4 flags 0
2091 // 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
2092 // Profile Saver-5504 [000] ...1 175002.714477: ext4_es_lookup_extent_enter: dev 259,32 ino 1311176 lblk 0
2093 // Profile Saver-5504 [000] ...1 175002.714477: ext4_es_lookup_extent_exit: dev 259,32 ino 1311176 found 0 [0/0) 0
2094 // Profile Saver-5504 [000] ...1 175002.714480: ext4_ext_map_blocks_enter: dev 259,32 ino 1311176 lblk 0 len 1 flags
2095 // Profile Saver-5504 [000] ...1 175002.714485: ext4_es_find_delayed_extent_range_enter: dev 259,32 ino 1311176 lblk 0
2096 // 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
2097 // Profile Saver-5504 [000] ...1 175002.714490: ext4_es_insert_extent: dev 259,32 ino 1311176 es [0/4294967295) mapped 576460752303423487 status H
2098 // 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
2099 // 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
2100 // Profile Saver-5504 [000] ...1 175002.714505: ext4_es_insert_extent: dev 259,32 ino 1311176 es [0/1) mapped 576460752303423487 status D
2101 // Profile Saver-5504 [000] ...1 175002.714513: ext4_da_write_end: dev 259,32 ino 1311176 pos 0 len 4 copied 4
2102 // Profile Saver-5504 [000] ...1 175002.714519: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
2103 // Profile Saver-5504 [000] ...1 175002.714520: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
2104 // Profile Saver-5504 [000] ...1 175002.714527: ext4_da_write_begin: dev 259,32 ino 1311176 pos 4 len 4 flags 0
2105 // 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
2106 // Profile Saver-5504 [000] ...1 175002.714531: ext4_da_write_end: dev 259,32 ino 1311176 pos 4 len 4 copied 4
2107 // Profile Saver-5504 [000] ...1 175002.714532: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
2108 // Profile Saver-5504 [000] ...1 175002.714532: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
2109 // Profile Saver-5504 [000] ...1 175002.715313: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
2110 // Profile Saver-5504 [000] ...1 175002.715322: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
2111 // Profile Saver-5504 [000] ...1 175002.723849: ext4_da_write_begin: dev 259,32 ino 1311176 pos 8 len 5 flags 0
2112 // 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
2113 // Profile Saver-5504 [000] ...1 175002.723873: ext4_da_write_end: dev 259,32 ino 1311176 pos 8 len 5 copied 5
2114 // Profile Saver-5504 [000] ...1 175002.723877: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
2115 // Profile Saver-5504 [000] ...1 175002.723879: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
2116 // Profile Saver-5504 [000] ...1 175002.726857: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
2117 // Profile Saver-5504 [000] ...1 175002.726867: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
2118 // Profile Saver-5504 [000] ...1 175002.726881: ext4_da_write_begin: dev 259,32 ino 1311176 pos 13 len 4 flags 0
2119 // 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
2120 // Profile Saver-5504 [000] ...1 175002.726890: ext4_da_write_end: dev 259,32 ino 1311176 pos 13 len 4 copied 4
2121 // Profile Saver-5504 [000] ...1 175002.726892: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
2122 // Profile Saver-5504 [000] ...1 175002.726892: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
2123 // Profile Saver-5504 [000] ...1 175002.726900: ext4_da_write_begin: dev 259,32 ino 1311176 pos 17 len 4079 flags 0
2124 // 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
2125 // Profile Saver-5504 [000] ...1 175002.726904: ext4_da_write_end: dev 259,32 ino 1311176 pos 17 len 4079 copied 4079
2126 // Profile Saver-5504 [000] ...1 175002.726905: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
2127 // Profile Saver-5504 [000] ...1 175002.726906: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
2128 // Profile Saver-5504 [000] ...1 175002.726908: ext4_da_write_begin: dev 259,32 ino 1311176 pos 4096 len 2780 flags 0
2129 // 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
2130 // Profile Saver-5504 [000] ...1 175002.726921: ext4_es_lookup_extent_enter: dev 259,32 ino 1311176 lblk 1
2131 // Profile Saver-5504 [000] ...1 175002.726924: ext4_es_lookup_extent_exit: dev 259,32 ino 1311176 found 1 [1/4294967294) 576460752303423487 H0x10
2132 // 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
2133 // Profile Saver-5504 [000] ...1 175002.726933: ext4_es_insert_extent: dev 259,32 ino 1311176 es [1/1) mapped 576460752303423487 status D
2134 // Profile Saver-5504 [000] ...1 175002.726940: ext4_da_write_end: dev 259,32 ino 1311176 pos 4096 len 2780 copied 2780
2135 // Profile Saver-5504 [000] ...1 175002.726941: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
2136 // Profile Saver-5504 [000] ...1 175002.726942: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
2137 // 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
2138 // d.process.acor-27885 [000] ...1 175018.227699: ext4_mark_inode_dirty: dev 259,32 ino 3278189 caller ext4_dirty_inode+0x48/0x68
2139 // d.process.acor-27885 [000] ...1 175018.227839: ext4_sync_file_enter: dev 259,32 ino 3278183 parent 3277001 datasync 1
2140 // 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
2141 // 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
2142 // clang-format on
2143
2144 static ExamplePage g_full_page_sched_switch{
2145 "synthetic",
2146 R"(
2147 00000000: 31f2 7622 1a00 0000 b40f 0000 0000 0000 1.v"............
2148 00000010: 1e00 0000 0000 0000 1000 0000 2f00 0103 ............/...
2149 00000020: 140d 0000 4a69 7420 7468 7265 6164 2070 ....Jit thread p
2150 00000030: 6f6f 6c00 140d 0000 8100 0000 0008 0000 ool.............
2151 00000040: 0000 0000 4576 656e 7454 6872 6561 6400 ....EventThread.
2152 00000050: 6572 0000 7002 0000 6100 0000 f057 0e00 er..p...a....W..
2153 00000060: 2f00 0103 7002 0000 4576 656e 7454 6872 /...p...EventThr
2154 00000070: 6561 6400 6572 0000 7002 0000 6100 0000 ead.er..p...a...
2155 00000080: 0100 0000 0000 0000 4a69 7420 7468 7265 ........Jit thre
2156 00000090: 6164 2070 6f6f 6c00 140d 0000 8100 0000 ad pool.........
2157 000000a0: 50c2 0910 2f00 0103 140d 0000 4a69 7420 P.../.......Jit
2158 000000b0: 7468 7265 6164 2070 6f6f 6c00 140d 0000 thread pool.....
2159 000000c0: 8100 0000 0100 0000 0000 0000 7377 6170 ............swap
2160 000000d0: 7065 722f 3000 0000 0000 0000 0000 0000 per/0...........
2161 000000e0: 7800 0000 901a c80e 2f00 0103 0000 0000 x......./.......
2162 000000f0: 7377 6170 7065 722f 3000 0000 0000 0000 swapper/0.......
2163 00000100: 0000 0000 7800 0000 0000 0000 0000 0000 ....x...........
2164 00000110: 4469 7370 5379 6e63 0069 6e67 6572 0000 DispSync.inger..
2165 00000120: 6f02 0000 6100 0000 1064 1e00 2f00 0103 o...a....d../...
2166 00000130: 6f02 0000 4469 7370 5379 6e63 0069 6e67 o...DispSync.ing
2167 00000140: 6572 0000 6f02 0000 6100 0000 0100 0000 er..o...a.......
2168 00000150: 0000 0000 7377 6170 7065 722f 3000 0000 ....swapper/0...
2169 00000160: 0000 0000 0000 0000 7800 0000 9074 8600 ........x....t..
2170 00000170: 2f00 0103 0000 0000 7377 6170 7065 722f /.......swapper/
2171 00000180: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
2172 00000190: 0000 0000 0000 0000 4576 656e 7454 6872 ........EventThr
2173 000001a0: 6561 6400 6572 0000 7002 0000 6100 0000 ead.er..p...a...
2174 000001b0: d071 0b00 2f00 0103 7002 0000 4576 656e .q../...p...Even
2175 000001c0: 7454 6872 6561 6400 6572 0000 7002 0000 tThread.er..p...
2176 000001d0: 6100 0000 0100 0000 0000 0000 7377 6170 a...........swap
2177 000001e0: 7065 722f 3000 0000 0000 0000 0000 0000 per/0...........
2178 000001f0: 7800 0000 10cd 4504 2f00 0103 0000 0000 x.....E./.......
2179 00000200: 7377 6170 7065 722f 3000 0000 0000 0000 swapper/0.......
2180 00000210: 0000 0000 7800 0000 0000 0000 0000 0000 ....x...........
2181 00000220: 7375 676f 763a 3000 0000 0000 0000 0000 sugov:0.........
2182 00000230: 3802 0000 3100 0000 30d6 1300 2f00 0103 8...1...0.../...
2183 00000240: 3802 0000 7375 676f 763a 3000 0000 0000 8...sugov:0.....
2184 00000250: 0000 0000 3802 0000 3100 0000 0100 0000 ....8...1.......
2185 00000260: 0000 0000 7377 6170 7065 722f 3000 0000 ....swapper/0...
2186 00000270: 0000 0000 0000 0000 7800 0000 3049 a202 ........x...0I..
2187 00000280: 2f00 0103 0000 0000 7377 6170 7065 722f /.......swapper/
2188 00000290: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
2189 000002a0: 0000 0000 0000 0000 4469 7370 5379 6e63 ........DispSync
2190 000002b0: 0069 6e67 6572 0000 6f02 0000 6100 0000 .inger..o...a...
2191 000002c0: d07a 1000 2f00 0103 6f02 0000 4469 7370 .z../...o...Disp
2192 000002d0: 5379 6e63 0069 6e67 6572 0000 6f02 0000 Sync.inger..o...
2193 000002e0: 6100 0000 0100 0000 0000 0000 7377 6170 a...........swap
2194 000002f0: 7065 722f 3000 0000 0000 0000 0000 0000 per/0...........
2195 00000300: 7800 0000 d085 1100 2f00 0103 0000 0000 x......./.......
2196 00000310: 7377 6170 7065 722f 3000 0000 0000 0000 swapper/0.......
2197 00000320: 0000 0000 7800 0000 0000 0000 0000 0000 ....x...........
2198 00000330: 7375 7266 6163 6566 6c69 6e67 6572 0000 surfaceflinger..
2199 00000340: 4b02 0000 6200 0000 907a f000 2f00 0103 K...b....z../...
2200 00000350: 4b02 0000 7375 7266 6163 6566 6c69 6e67 K...surfacefling
2201 00000360: 6572 0000 4b02 0000 6200 0000 0100 0000 er..K...b.......
2202 00000370: 0000 0000 7377 6170 7065 722f 3000 0000 ....swapper/0...
2203 00000380: 0000 0000 0000 0000 7800 0000 305a 6400 ........x...0Zd.
2204 00000390: 2f00 0103 0000 0000 7377 6170 7065 722f /.......swapper/
2205 000003a0: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
2206 000003b0: 0000 0000 0000 0000 6d64 7373 5f66 6230 ........mdss_fb0
2207 000003c0: 0000 0000 0000 0000 5714 0000 5300 0000 ........W...S...
2208 000003d0: 10b1 9e03 2f00 0103 5714 0000 6d64 7373 ..../...W...mdss
2209 000003e0: 5f66 6230 0000 0000 0000 0000 5714 0000 _fb0........W...
2210 000003f0: 5300 0000 0200 0000 0000 0000 6b73 6f66 S...........ksof
2211 00000400: 7469 7271 642f 3000 0000 0000 0300 0000 tirqd/0.........
2212 00000410: 7800 0000 90bb 9900 2f00 0103 0300 0000 x......./.......
2213 00000420: 6b73 6f66 7469 7271 642f 3000 0000 0000 ksoftirqd/0.....
2214 00000430: 0300 0000 7800 0000 0100 0000 0000 0000 ....x...........
2215 00000440: 7377 6170 7065 722f 3000 0000 0000 0000 swapper/0.......
2216 00000450: 0000 0000 7800 0000 701e 5305 2f00 0103 ....x...p.S./...
2217 00000460: 0000 0000 7377 6170 7065 722f 3000 0000 ....swapper/0...
2218 00000470: 0000 0000 0000 0000 7800 0000 0000 0000 ........x.......
2219 00000480: 0000 0000 6b77 6f72 6b65 722f 7531 363a ....kworker/u16:
2220 00000490: 3600 0000 6401 0000 7800 0000 90a1 2900 6...d...x.....).
2221 000004a0: 2f00 0103 6401 0000 6b77 6f72 6b65 722f /...d...kworker/
2222 000004b0: 7531 363a 3600 0000 6401 0000 7800 0000 u16:6...d...x...
2223 000004c0: 0200 0000 0000 0000 7377 6170 7065 722f ........swapper/
2224 000004d0: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
2225 000004e0: b0e5 4f04 2f00 0103 0000 0000 7377 6170 ..O./.......swap
2226 000004f0: 7065 722f 3000 0000 0000 0000 0000 0000 per/0...........
2227 00000500: 7800 0000 0000 0000 0000 0000 4269 6e64 x...........Bind
2228 00000510: 6572 3a32 3136 385f 3135 0000 e614 0000 er:2168_15......
2229 00000520: 7800 0000 b0bd 7c00 2f00 0103 e614 0000 x.....|./.......
2230 00000530: 4269 6e64 6572 3a32 3136 385f 3135 0000 Binder:2168_15..
2231 00000540: e614 0000 7800 0000 0100 0000 0000 0000 ....x...........
2232 00000550: 7377 6170 7065 722f 3000 0000 0000 0000 swapper/0.......
2233 00000560: 0000 0000 7800 0000 d0bd 7e01 2f00 0103 ....x.....~./...
2234 00000570: 0000 0000 7377 6170 7065 722f 3000 0000 ....swapper/0...
2235 00000580: 0000 0000 0000 0000 7800 0000 0000 0000 ........x.......
2236 00000590: 0000 0000 6b77 6f72 6b65 722f 7531 363a ....kworker/u16:
2237 000005a0: 3900 0000 e204 0000 7800 0000 7016 0800 9.......x...p...
2238 000005b0: 2f00 0103 e204 0000 6b77 6f72 6b65 722f /.......kworker/
2239 000005c0: 7531 363a 3900 0000 e204 0000 7800 0000 u16:9.......x...
2240 000005d0: 0100 0000 0000 0000 7377 6170 7065 722f ........swapper/
2241 000005e0: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
2242 000005f0: 1004 5200 2f00 0103 0000 0000 7377 6170 ..R./.......swap
2243 00000600: 7065 722f 3000 0000 0000 0000 0000 0000 per/0...........
2244 00000610: 7800 0000 0000 0000 0000 0000 6b77 6f72 x...........kwor
2245 00000620: 6b65 722f 7531 363a 3900 0000 e204 0000 ker/u16:9.......
2246 00000630: 7800 0000 d0db 0700 2f00 0103 e204 0000 x......./.......
2247 00000640: 6b77 6f72 6b65 722f 7531 363a 3900 0000 kworker/u16:9...
2248 00000650: e204 0000 7800 0000 0100 0000 0000 0000 ....x...........
2249 00000660: 7377 6170 7065 722f 3000 0000 0000 0000 swapper/0.......
2250 00000670: 0000 0000 7800 0000 b0a2 8c00 2f00 0103 ....x......./...
2251 00000680: 0000 0000 7377 6170 7065 722f 3000 0000 ....swapper/0...
2252 00000690: 0000 0000 0000 0000 7800 0000 0000 0000 ........x.......
2253 000006a0: 0000 0000 6b77 6f72 6b65 722f 7531 363a ....kworker/u16:
2254 000006b0: 3900 0000 e204 0000 7800 0000 d02b 0400 9.......x....+..
2255 000006c0: 2f00 0103 e204 0000 6b77 6f72 6b65 722f /.......kworker/
2256 000006d0: 7531 363a 3900 0000 e204 0000 7800 0000 u16:9.......x...
2257 000006e0: 0100 0000 0000 0000 7377 6170 7065 722f ........swapper/
2258 000006f0: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
2259 00000700: d064 ef05 2f00 0103 0000 0000 7377 6170 .d../.......swap
2260 00000710: 7065 722f 3000 0000 0000 0000 0000 0000 per/0...........
2261 00000720: 7800 0000 0000 0000 0000 0000 4469 7370 x...........Disp
2262 00000730: 5379 6e63 0069 6e67 6572 0000 6f02 0000 Sync.inger..o...
2263 00000740: 6100 0000 f07d 1b00 2f00 0103 6f02 0000 a....}../...o...
2264 00000750: 4469 7370 5379 6e63 0069 6e67 6572 0000 DispSync.inger..
2265 00000760: 6f02 0000 6100 0000 0100 0000 0000 0000 o...a...........
2266 00000770: 6b73 6f66 7469 7271 642f 3000 0000 0000 ksoftirqd/0.....
2267 00000780: 0300 0000 7800 0000 304c 2000 2f00 0103 ....x...0L ./...
2268 00000790: 0300 0000 6b73 6f66 7469 7271 642f 3000 ....ksoftirqd/0.
2269 000007a0: 0000 0000 0300 0000 7800 0000 0100 0000 ........x.......
2270 000007b0: 0000 0000 6465 7832 6f61 7400 3935 5f33 ....dex2oat.95_3
2271 000007c0: 0000 0000 341f 0000 8200 0000 700b 0700 ....4.......p...
2272 000007d0: 2f00 0103 341f 0000 6465 7832 6f61 7400 /...4...dex2oat.
2273 000007e0: 3935 5f33 0000 0000 341f 0000 8200 0000 95_3....4.......
2274 000007f0: 0000 0000 0000 0000 7375 676f 763a 3000 ........sugov:0.
2275 00000800: 0000 0000 0000 0000 3802 0000 3100 0000 ........8...1...
2276 00000810: 50b0 0600 2f00 0103 3802 0000 7375 676f P.../...8...sugo
2277 00000820: 763a 3000 0000 0000 0000 0000 3802 0000 v:0.........8...
2278 00000830: 3100 0000 0008 0000 0000 0000 6d69 6772 1...........migr
2279 00000840: 6174 696f 6e2f 3000 0000 0000 0d00 0000 ation/0.........
2280 00000850: 0000 0000 d09c 0600 2f00 0103 0d00 0000 ......../.......
2281 00000860: 6d69 6772 6174 696f 6e2f 3000 0000 0000 migration/0.....
2282 00000870: 0d00 0000 0000 0000 0100 0000 0000 0000 ................
2283 00000880: 7375 676f 763a 3000 0000 0000 0000 0000 sugov:0.........
2284 00000890: 3802 0000 3100 0000 7061 1900 2f00 0103 8...1...pa../...
2285 000008a0: 3802 0000 7375 676f 763a 3000 0000 0000 8...sugov:0.....
2286 000008b0: 0000 0000 3802 0000 3100 0000 0100 0000 ....8...1.......
2287 000008c0: 0000 0000 6465 7832 6f61 7400 3935 5f33 ....dex2oat.95_3
2288 000008d0: 0000 0000 341f 0000 8200 0000 f03c 5600 ....4........<V.
2289 000008e0: 2f00 0103 341f 0000 6465 7832 6f61 7400 /...4...dex2oat.
2290 000008f0: 3935 5f33 0000 0000 341f 0000 8200 0000 95_3....4.......
2291 00000900: 0200 0000 0000 0000 7377 6170 7065 722f ........swapper/
2292 00000910: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
2293 00000920: 5013 c400 2f00 0103 0000 0000 7377 6170 P.../.......swap
2294 00000930: 7065 722f 3000 0000 0000 0000 0000 0000 per/0...........
2295 00000940: 7800 0000 0000 0000 0000 0000 616e 6472 x...........andr
2296 00000950: 6f69 642e 6861 7264 7761 7200 d20a 0000 oid.hardwar.....
2297 00000960: 7800 0000 30c9 1300 2f00 0103 d20a 0000 x...0.../.......
2298 00000970: 616e 6472 6f69 642e 6861 7264 7761 7200 android.hardwar.
2299 00000980: d20a 0000 7800 0000 0100 0000 0000 0000 ....x...........
2300 00000990: 7377 6170 7065 722f 3000 0000 0000 0000 swapper/0.......
2301 000009a0: 0000 0000 7800 0000 7097 c000 2f00 0103 ....x...p.../...
2302 000009b0: 0000 0000 7377 6170 7065 722f 3000 0000 ....swapper/0...
2303 000009c0: 0000 0000 0000 0000 7800 0000 0000 0000 ........x.......
2304 000009d0: 0000 0000 616e 6472 6f69 642e 6861 7264 ....android.hard
2305 000009e0: 7761 7200 d20a 0000 7800 0000 305c 0c00 war.....x...0\..
2306 000009f0: 2f00 0103 d20a 0000 616e 6472 6f69 642e /.......android.
2307 00000a00: 6861 7264 7761 7200 d20a 0000 7800 0000 hardwar.....x...
2308 00000a10: 0100 0000 0000 0000 7377 6170 7065 722f ........swapper/
2309 00000a20: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
2310 00000a30: d0aa 1401 2f00 0103 0000 0000 7377 6170 ..../.......swap
2311 00000a40: 7065 722f 3000 0000 0000 0000 0000 0000 per/0...........
2312 00000a50: 7800 0000 0000 0000 0000 0000 616e 6472 x...........andr
2313 00000a60: 6f69 642e 6861 7264 7761 7200 d20a 0000 oid.hardwar.....
2314 00000a70: 7800 0000 903b 0c00 2f00 0103 d20a 0000 x....;../.......
2315 00000a80: 616e 6472 6f69 642e 6861 7264 7761 7200 android.hardwar.
2316 00000a90: d20a 0000 7800 0000 0100 0000 0000 0000 ....x...........
2317 00000aa0: 7377 6170 7065 722f 3000 0000 0000 0000 swapper/0.......
2318 00000ab0: 0000 0000 7800 0000 f024 5401 2f00 0103 ....x....$T./...
2319 00000ac0: 0000 0000 7377 6170 7065 722f 3000 0000 ....swapper/0...
2320 00000ad0: 0000 0000 0000 0000 7800 0000 0000 0000 ........x.......
2321 00000ae0: 0000 0000 616e 6472 6f69 642e 6861 7264 ....android.hard
2322 00000af0: 7761 7200 d20a 0000 7800 0000 f0f3 0b00 war.....x.......
2323 00000b00: 2f00 0103 d20a 0000 616e 6472 6f69 642e /.......android.
2324 00000b10: 6861 7264 7761 7200 d20a 0000 7800 0000 hardwar.....x...
2325 00000b20: 0100 0000 0000 0000 7377 6170 7065 722f ........swapper/
2326 00000b30: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
2327 00000b40: d0b5 bf02 2f00 0103 0000 0000 7377 6170 ..../.......swap
2328 00000b50: 7065 722f 3000 0000 0000 0000 0000 0000 per/0...........
2329 00000b60: 7800 0000 0000 0000 0000 0000 4469 7370 x...........Disp
2330 00000b70: 5379 6e63 0069 6e67 6572 0000 6f02 0000 Sync.inger..o...
2331 00000b80: 6100 0000 90cd 1400 2f00 0103 6f02 0000 a......./...o...
2332 00000b90: 4469 7370 5379 6e63 0069 6e67 6572 0000 DispSync.inger..
2333 00000ba0: 6f02 0000 6100 0000 0100 0000 0000 0000 o...a...........
2334 00000bb0: 7377 6170 7065 722f 3000 0000 0000 0000 swapper/0.......
2335 00000bc0: 0000 0000 7800 0000 50a6 1100 2f00 0103 ....x...P.../...
2336 00000bd0: 0000 0000 7377 6170 7065 722f 3000 0000 ....swapper/0...
2337 00000be0: 0000 0000 0000 0000 7800 0000 0000 0000 ........x.......
2338 00000bf0: 0000 0000 7375 7266 6163 6566 6c69 6e67 ....surfacefling
2339 00000c00: 6572 0000 4b02 0000 6200 0000 b04c 4200 er..K...b....LB.
2340 00000c10: 2f00 0103 4b02 0000 7375 7266 6163 6566 /...K...surfacef
2341 00000c20: 6c69 6e67 6572 0000 4b02 0000 6200 0000 linger..K...b...
2342 00000c30: 0100 0000 0000 0000 7377 6170 7065 722f ........swapper/
2343 00000c40: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
2344 00000c50: b025 060a 2f00 0103 0000 0000 7377 6170 .%../.......swap
2345 00000c60: 7065 722f 3000 0000 0000 0000 0000 0000 per/0...........
2346 00000c70: 7800 0000 0000 0000 0000 0000 6b77 6f72 x...........kwor
2347 00000c80: 6b65 722f 7531 363a 3600 0000 6401 0000 ker/u16:6...d...
2348 00000c90: 7800 0000 d0b6 0600 2f00 0103 6401 0000 x......./...d...
2349 00000ca0: 6b77 6f72 6b65 722f 7531 363a 3600 0000 kworker/u16:6...
2350 00000cb0: 6401 0000 7800 0000 0100 0000 0000 0000 d...x...........
2351 00000cc0: 7377 6170 7065 722f 3000 0000 0000 0000 swapper/0.......
2352 00000cd0: 0000 0000 7800 0000 f0a0 5800 2f00 0103 ....x.....X./...
2353 00000ce0: 0000 0000 7377 6170 7065 722f 3000 0000 ....swapper/0...
2354 00000cf0: 0000 0000 0000 0000 7800 0000 0000 0000 ........x.......
2355 00000d00: 0000 0000 6b77 6f72 6b65 722f 7531 363a ....kworker/u16:
2356 00000d10: 3600 0000 6401 0000 7800 0000 f07a 1300 6...d...x....z..
2357 00000d20: 2f00 0103 6401 0000 6b77 6f72 6b65 722f /...d...kworker/
2358 00000d30: 7531 363a 3600 0000 6401 0000 7800 0000 u16:6...d...x...
2359 00000d40: 0100 0000 0000 0000 7377 6170 7065 722f ........swapper/
2360 00000d50: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
2361 00000d60: b080 b101 2f00 0103 0000 0000 7377 6170 ..../.......swap
2362 00000d70: 7065 722f 3000 0000 0000 0000 0000 0000 per/0...........
2363 00000d80: 7800 0000 0000 0000 0000 0000 6b77 6f72 x...........kwor
2364 00000d90: 6b65 722f 7531 363a 3600 0000 6401 0000 ker/u16:6...d...
2365 00000da0: 7800 0000 103c 1200 2f00 0103 6401 0000 x....<../...d...
2366 00000db0: 6b77 6f72 6b65 722f 7531 363a 3600 0000 kworker/u16:6...
2367 00000dc0: 6401 0000 7800 0000 0100 0000 0000 0000 d...x...........
2368 00000dd0: 7377 6170 7065 722f 3000 0000 0000 0000 swapper/0.......
2369 00000de0: 0000 0000 7800 0000 50ea 3800 2f00 0103 ....x...P.8./...
2370 00000df0: 0000 0000 7377 6170 7065 722f 3000 0000 ....swapper/0...
2371 00000e00: 0000 0000 0000 0000 7800 0000 0000 0000 ........x.......
2372 00000e10: 0000 0000 6b77 6f72 6b65 722f 7531 363a ....kworker/u16:
2373 00000e20: 3600 0000 6401 0000 7800 0000 5032 0400 6...d...x...P2..
2374 00000e30: 2f00 0103 6401 0000 6b77 6f72 6b65 722f /...d...kworker/
2375 00000e40: 7531 363a 3600 0000 6401 0000 7800 0000 u16:6...d...x...
2376 00000e50: 0100 0000 0000 0000 7377 6170 7065 722f ........swapper/
2377 00000e60: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
2378 00000e70: 70f5 9000 2f00 0103 0000 0000 7377 6170 p.../.......swap
2379 00000e80: 7065 722f 3000 0000 0000 0000 0000 0000 per/0...........
2380 00000e90: 7800 0000 0000 0000 0000 0000 6b77 6f72 x...........kwor
2381 00000ea0: 6b65 722f 7531 363a 3600 0000 6401 0000 ker/u16:6...d...
2382 00000eb0: 7800 0000 10d7 0300 2f00 0103 6401 0000 x......./...d...
2383 00000ec0: 6b77 6f72 6b65 722f 7531 363a 3600 0000 kworker/u16:6...
2384 00000ed0: 6401 0000 7800 0000 0100 0000 0000 0000 d...x...........
2385 00000ee0: 7377 6170 7065 722f 3000 0000 0000 0000 swapper/0.......
2386 00000ef0: 0000 0000 7800 0000 907c 0900 2f00 0103 ....x....|../...
2387 00000f00: 0000 0000 7377 6170 7065 722f 3000 0000 ....swapper/0...
2388 00000f10: 0000 0000 0000 0000 7800 0000 0000 0000 ........x.......
2389 00000f20: 0000 0000 6b77 6f72 6b65 722f 7531 363a ....kworker/u16:
2390 00000f30: 3600 0000 6401 0000 7800 0000 7082 0300 6...d...x...p...
2391 00000f40: 2f00 0103 6401 0000 6b77 6f72 6b65 722f /...d...kworker/
2392 00000f50: 7531 363a 3600 0000 6401 0000 7800 0000 u16:6...d...x...
2393 00000f60: 0100 0000 0000 0000 7377 6170 7065 722f ........swapper/
2394 00000f70: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
2395 00000f80: f0ec 2100 2f00 0103 0000 0000 7377 6170 ..!./.......swap
2396 00000f90: 7065 722f 3000 0000 0000 0000 0000 0000 per/0...........
2397 00000fa0: 7800 0000 0000 0000 0000 0000 6b77 6f72 x...........kwor
2398 00000fb0: 6b65 722f 7531 363a 3600 0000 6401 0000 ker/u16:6...d...
2399 00000fc0: 7800 0000 0000 0000 0000 0000 0000 0000 x...............
2400 00000fd0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
2401 00000fe0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
2402 00000ff0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
2403 )",
2404 };
2405
TEST_F(CpuReaderParsePagePayloadTest,ParseFullPageSchedSwitch)2406 TEST_F(CpuReaderParsePagePayloadTest, ParseFullPageSchedSwitch) {
2407 const ExamplePage* test_case = &g_full_page_sched_switch;
2408
2409 ProtoTranslationTable* table = GetTable(test_case->name);
2410 auto page = PageFromXxd(test_case->data);
2411
2412 FtraceDataSourceConfig ds_config = EmptyConfig();
2413 ds_config.event_filter.AddEnabledEvent(
2414 table->EventToFtraceId(GroupAndName("sched", "sched_switch")));
2415
2416 const uint8_t* parse_pos = page.get();
2417 std::optional<CpuReader::PageHeader> page_header =
2418 CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
2419
2420 const uint8_t* page_end = page.get() + base::GetSysPageSize();
2421 ASSERT_TRUE(page_header.has_value());
2422 EXPECT_FALSE(page_header->lost_events);
2423 EXPECT_LE(parse_pos + page_header->size, page_end);
2424
2425 FtraceParseStatus status = CpuReader::ParsePagePayload(
2426 parse_pos, &page_header.value(), table, &ds_config,
2427 CreateBundler(ds_config), &metadata_, &last_read_event_ts_);
2428
2429 EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_OK);
2430
2431 auto bundle = GetBundle();
2432 EXPECT_EQ(bundle.event().size(), 59u);
2433 }
2434
2435 // clang-format off
2436 // # tracer: nop
2437 // #
2438 // # entries-in-buffer/entries-written: 18/18 #P:8
2439 // #
2440 // # _-----=> irqs-off
2441 // # / _----=> need-resched
2442 // # | / _---=> hardirq/softirq
2443 // # || / _--=> preempt-depth
2444 // # ||| / delay
2445 // # TASK-PID CPU# |||| TIMESTAMP FUNCTION
2446 // # | | | |||| | |
2447 // <...>-9290 [000] .... 1352.654573: suspend_resume: sync_filesystems[0] end
2448 // <...>-9290 [000] .... 1352.665366: suspend_resume: freeze_processes[0] begin
2449 // <...>-9290 [000] .... 1352.699711: suspend_resume: freeze_processes[0] end
2450 // <...>-9290 [000] .... 1352.699718: suspend_resume: suspend_enter[1] end
2451 // <...>-9290 [000] .... 1352.699723: suspend_resume: dpm_prepare[2] begin
2452 // <...>-9290 [000] .... 1352.703470: suspend_resume: dpm_prepare[2] end
2453 // <...>-9290 [000] .... 1352.703477: suspend_resume: dpm_suspend[2] begin
2454 // <...>-9290 [000] .... 1352.720107: suspend_resume: dpm_resume[16] end
2455 // <...>-9290 [000] .... 1352.720113: suspend_resume: dpm_complete[16] begin
2456 // <...>-9290 [000] .n.. 1352.724540: suspend_resume: dpm_complete[16] end
2457 // <...>-9290 [000] .... 1352.724567: suspend_resume: resume_console[1] begin
2458 // <...>-9290 [000] .... 1352.724570: suspend_resume: resume_console[1] end
2459 // <...>-9290 [000] .... 1352.724574: suspend_resume: thaw_processes[0] begin
2460 // clang-format on
2461
2462 static ExamplePage g_suspend_resume{
2463 "synthetic",
2464 R"(00000000: edba 155a 3201 0000 7401 0000 0000 0000 ...Z2...t.......
2465 00000010: 7e58 22cd 1201 0000 0600 0000 ac00 0000 ~X".............
2466 00000020: 4a24 0000 5a7a f504 85ff ffff 0000 0000 J$..Zz..........
2467 00000030: 0017 0000 c621 9614 ac00 0000 4a24 0000 .....!......J$..
2468 00000040: 1c7a f504 85ff ffff 0000 0000 0100 0000 .z..............
2469 00000050: e6f1 8141 ac00 0000 4a24 0000 1c7a f504 ...A....J$...z..
2470 00000060: 85ff ffff 0000 0000 0000 0000 8682 0300 ................
2471 00000070: ac00 0000 4a24 0000 4c7a f504 85ff ffff ....J$..Lz......
2472 00000080: 0100 0000 0063 755f 0657 0200 ac00 0000 .....cu_.W......
2473 00000090: 4a24 0000 8ad5 0105 85ff ffff 0200 0000 J$..............
2474 000000a0: 0100 0000 06b5 2507 ac00 0000 4a24 0000 ......%.....J$..
2475 000000b0: 8ad5 0105 85ff ffff 0200 0000 0000 0000 ................
2476 000000c0: 460d 0300 ac00 0000 4a24 0000 51d5 0105 F.......J$..Q...
2477 000000d0: 85ff ffff 0200 0000 0117 0000 c63e b81f .............>..
2478 000000e0: ac00 0000 4a24 0000 7fd5 0105 85ff ffff ....J$..........
2479 000000f0: 1000 0000 0010 0b00 a6f9 0200 ac00 0000 ................
2480 00000100: 4a24 0000 96d5 0105 85ff ffff 1000 0000 J$..............
2481 00000110: 01c0 1f00 a6dd 7108 ac00 0400 4a24 0000 ......q.....J$..
2482 00000120: 96d5 0105 85ff ffff 1000 0000 0000 0000 ................
2483 00000130: c6f1 0c00 ac00 0000 4a24 0000 3d7a f504 ........J$..=z..
2484 00000140: 85ff ffff 0100 0000 01ea 24d5 a66c 0100 ..........$..l..
2485 00000150: ac00 0000 4a24 0000 3d7a f504 85ff ffff ....J$..=z......
2486 00000160: 0100 0000 0000 0001 6636 0200 ac00 0000 ........f6......
2487 00000170: 4a24 0000 d178 f504 85ff ffff 0000 0000 J$...x..........
2488 00000180: 0100 0000 0000 0000 0000 0000 0000 0000 ................
2489 00000190: 0000 0000 0000 0000 0000 0000 0000 0000 ................
2490 )"};
2491
TEST_F(CpuReaderParsePagePayloadTest,ParseSuspendResume)2492 TEST_F(CpuReaderParsePagePayloadTest, ParseSuspendResume) {
2493 const ExamplePage* test_case = &g_suspend_resume;
2494
2495 ProtoTranslationTable* table = GetTable(test_case->name);
2496 auto page = PageFromXxd(test_case->data);
2497
2498 FtraceDataSourceConfig ds_config = EmptyConfig();
2499 ds_config.event_filter.AddEnabledEvent(
2500 table->EventToFtraceId(GroupAndName("power", "suspend_resume")));
2501
2502 const uint8_t* parse_pos = page.get();
2503 std::optional<CpuReader::PageHeader> page_header =
2504 CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
2505 ASSERT_TRUE(page_header.has_value());
2506
2507 CpuReader::ParsePagePayload(parse_pos, &page_header.value(), table,
2508 &ds_config, CreateBundler(ds_config), &metadata_,
2509 &last_read_event_ts_);
2510 auto bundle = GetBundle();
2511 ASSERT_EQ(bundle.event().size(), 13u);
2512 EXPECT_EQ(bundle.event()[0].suspend_resume().action(), "sync_filesystems");
2513 EXPECT_EQ(bundle.event()[1].suspend_resume().action(), "freeze_processes");
2514 EXPECT_EQ(bundle.event()[2].suspend_resume().action(), "freeze_processes");
2515 EXPECT_EQ(bundle.event()[3].suspend_resume().action(), "suspend_enter");
2516 // dpm_prepare deliberately missing from:
2517 // src/traced/probes/ftrace/test/data/synthetic/printk_formats to ensure we
2518 // handle that case correctly.
2519 EXPECT_EQ(bundle.event()[4].suspend_resume().action(), "");
2520 }
2521
2522 // clang-format off
2523 // # tracer: nop
2524 // #
2525 // # entries-in-buffer/entries-written: 1041/238740 #P:8
2526 // #
2527 // # _-----=> irqs-off
2528 // # / _----=> need-resched
2529 // # | / _---=> hardirq/softirq
2530 // # || / _--=> preempt-depth
2531 // # ||| / delay
2532 // # TASK-PID CPU# |||| TIMESTAMP FUNCTION
2533 // # | | | |||| | |
2534 // android.bg-1668 [000] ...1 174991.234105: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
2535 // android.bg-1668 [000] ...1 174991.234108: ext4_mark_inode_dirty: dev 259,32 ino 2883605 caller ext4_dirty_inode+0x48/0x68
2536 // android.bg-1668 [000] ...1 174991.234118: ext4_da_write_begin: dev 259,32 ino 2883605 pos 20480 len 4096 flags 0
2537 // 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
2538 // android.bg-1668 [000] ...1 174991.234133: ext4_es_lookup_extent_enter: dev 259,32 ino 2883605 lblk 5
2539 // android.bg-1668 [000] ...1 174991.234135: ext4_es_lookup_extent_exit: dev 259,32 ino 2883605 found 1 [5/4294967290) 576460752303423487 H0x10
2540 // 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
2541 // android.bg-1668 [000] ...1 174991.234142: ext4_es_insert_extent: dev 259,32 ino 2883605 es [5/1) mapped 576460752303423487 status D
2542 // android.bg-1668 [000] ...1 174991.234153: ext4_da_write_end: dev 259,32 ino 2883605 pos 20480 len 4096 copied 4096
2543 // android.bg-1668 [000] ...1 174991.234158: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
2544 // android.bg-1668 [000] ...1 174991.234160: ext4_mark_inode_dirty: dev 259,32 ino 2883605 caller ext4_dirty_inode+0x48/0x68
2545 // android.bg-1668 [000] ...1 174991.234170: ext4_da_write_begin: dev 259,32 ino 2883605 pos 24576 len 2968 flags 0
2546 // 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
2547 // android.bg-1668 [000] ...1 174991.234184: ext4_es_lookup_extent_enter: dev 259,32 ino 2883605 lblk 6
2548 // android.bg-1668 [000] ...1 174991.234187: ext4_es_lookup_extent_exit: dev 259,32 ino 2883605 found 1 [6/4294967289) 576460752303423487 H0x10
2549 // 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
2550 // android.bg-1668 [000] ...1 174991.234193: ext4_es_insert_extent: dev 259,32 ino 2883605 es [6/1) mapped 576460752303423487 status D
2551 // android.bg-1668 [000] ...1 174991.234203: ext4_da_write_end: dev 259,32 ino 2883605 pos 24576 len 2968 copied 2968
2552 // android.bg-1668 [000] ...1 174991.234209: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
2553 // android.bg-1668 [000] ...1 174991.234211: ext4_mark_inode_dirty: dev 259,32 ino 2883605 caller ext4_dirty_inode+0x48/0x68
2554 // android.bg-1668 [000] ...1 174991.234262: ext4_sync_file_enter: dev 259,32 ino 2883605 parent 2883592 datasync 0
2555 // 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
2556 // android.bg-1668 [000] ...1 174991.234287: ext4_journal_start: dev 259,32 blocks, 10 rsv_blocks, 0 caller ext4_writepages+0x6a4/0x119c
2557 // 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
2558 // android.bg-1668 [000] ...1 174991.234319: ext4_da_write_pages_extent: dev 259,32 ino 2883605 lblk 0 len 7 flags 0x200
2559 // android.bg-1668 [000] ...1 174991.234322: ext4_es_lookup_extent_enter: dev 259,32 ino 2883605 lblk 0
2560 // android.bg-1668 [000] ...1 174991.234324: ext4_es_lookup_extent_exit: dev 259,32 ino 2883605 found 1 [0/7) 576460752303423487 D0x10
2561 // 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
2562 // 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
2563 // 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
2564 // 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
2565 // android.bg-1668 [000] ...1 174991.234409: ext4_mark_inode_dirty: dev 259,32 ino 2883605 caller __ext4_ext_dirty+0x104/0x170
2566 // android.bg-1668 [000] ...1 174991.234420: ext4_get_reserved_cluster_alloc: dev 259,32 ino 2883605 lblk 0 len 7
2567 // 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
2568 // 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
2569 // android.bg-1668 [000] ...1 174991.234441: ext4_es_lookup_extent_enter: dev 259,32 ino 3 lblk 1
2570 // android.bg-1668 [000] ...1 174991.234445: ext4_es_lookup_extent_exit: dev 259,32 ino 3 found 1 [0/2) 9255 W0x10
2571 // 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
2572 // android.bg-1668 [000] ...1 174991.234460: ext4_es_lookup_extent_enter: dev 259,32 ino 4 lblk 1
2573 // android.bg-1668 [000] ...1 174991.234463: ext4_es_lookup_extent_exit: dev 259,32 ino 4 found 1 [0/2) 9257 W0x10
2574 // android.bg-1668 [000] ...1 174991.234471: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
2575 // android.bg-1668 [000] ...1 174991.234474: ext4_mark_inode_dirty: dev 259,32 ino 2883605 caller ext4_dirty_inode+0x48/0x68
2576 // 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
2577 // android.bg-1668 [000] ...1 174991.234484: ext4_es_insert_extent: dev 259,32 ino 2883605 es [0/7) mapped 2155471 status W
2578 // android.bg-1668 [000] ...1 174991.234547: ext4_mark_inode_dirty: dev 259,32 ino 2883605 caller ext4_writepages+0xdc0/0x119c
2579 // android.bg-1668 [000] ...1 174991.234604: ext4_journal_start: dev 259,32 blocks, 10 rsv_blocks, 0 caller ext4_writepages+0x6a4/0x119c
2580 // 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
2581 // 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
2582 // Profile Saver-5504 [000] ...1 175002.711928: ext4_discard_preallocations: dev 259,32 ino 1311176
2583 // Profile Saver-5504 [000] ...1 175002.714165: ext4_begin_ordered_truncate: dev 259,32 ino 1311176 new_size 0
2584 // Profile Saver-5504 [000] ...1 175002.714172: ext4_journal_start: dev 259,32 blocks, 3 rsv_blocks, 0 caller ext4_setattr+0x5b4/0x788
2585 // Profile Saver-5504 [000] ...1 175002.714218: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_setattr+0x65c/0x788
2586 // Profile Saver-5504 [000] ...1 175002.714277: ext4_invalidatepage: dev 259,32 ino 1311176 page_index 0 offset 0 length 4096
2587 // Profile Saver-5504 [000] ...1 175002.714281: ext4_releasepage: dev 259,32 ino 1311176 page_index 0
2588 // Profile Saver-5504 [000] ...1 175002.714295: ext4_invalidatepage: dev 259,32 ino 1311176 page_index 1 offset 0 length 4096
2589 // Profile Saver-5504 [000] ...1 175002.714296: ext4_releasepage: dev 259,32 ino 1311176 page_index 1
2590 // Profile Saver-5504 [000] ...1 175002.714315: ext4_truncate_enter: dev 259,32 ino 1311176 blocks 24
2591 // Profile Saver-5504 [000] ...1 175002.714318: ext4_journal_start: dev 259,32 blocks, 10 rsv_blocks, 0 caller ext4_truncate+0x258/0x4b8
2592 // Profile Saver-5504 [000] ...1 175002.714322: ext4_discard_preallocations: dev 259,32 ino 1311176
2593 // Profile Saver-5504 [000] ...1 175002.714324: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_ext_truncate+0x24/0xc8
2594 // Profile Saver-5504 [000] ...1 175002.714328: ext4_es_remove_extent: dev 259,32 ino 1311176 es [0/4294967295)
2595 // 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
2596 // Profile Saver-5504 [000] ...1 175002.714338: ext4_ext_remove_space: dev 259,32 ino 1311176 since 0 end 4294967294 depth 0
2597 // 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
2598 // 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
2599 // Profile Saver-5504 [000] ...1 175002.714354: ext4_free_blocks: dev 259,32 ino 1311176 mode 0100600 block 5276994 count 2 flags 1ST_CLUSTER
2600 // Profile Saver-5504 [000] ...1 175002.714365: ext4_mballoc_free: dev 259,32 inode 1311176 extent 161/1346/2
2601 // 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
2602 // Profile Saver-5504 [000] ...1 175002.714391: ext4_es_lookup_extent_enter: dev 259,32 ino 3 lblk 4
2603 // Profile Saver-5504 [000] ...1 175002.714394: ext4_es_lookup_extent_exit: dev 259,32 ino 3 found 1 [4/1) 557094 W0x10
2604 // 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
2605 // Profile Saver-5504 [000] ...1 175002.714404: ext4_es_lookup_extent_enter: dev 259,32 ino 4 lblk 8
2606 // Profile Saver-5504 [000] ...1 175002.714406: ext4_es_lookup_extent_exit: dev 259,32 ino 4 found 1 [8/3) 7376914 W0x10
2607 // Profile Saver-5504 [000] ...1 175002.714413: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
2608 // Profile Saver-5504 [000] ...1 175002.714414: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
2609 // Profile Saver-5504 [000] ...1 175002.714420: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller __ext4_ext_dirty+0x104/0x170
2610 // 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
2611 // Profile Saver-5504 [000] ...1 175002.714425: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller __ext4_ext_dirty+0x104/0x170
2612 // Profile Saver-5504 [000] ...1 175002.714433: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_truncate+0x3c4/0x4b8
2613 // Profile Saver-5504 [000] ...1 175002.714436: ext4_truncate_exit: dev 259,32 ino 1311176 blocks 8
2614 // Profile Saver-5504 [000] ...1 175002.714437: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
2615 // Profile Saver-5504 [000] ...1 175002.714438: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
2616 // Profile Saver-5504 [000] ...1 175002.714462: ext4_da_write_begin: dev 259,32 ino 1311176 pos 0 len 4 flags 0
2617 // 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
2618 // Profile Saver-5504 [000] ...1 175002.714477: ext4_es_lookup_extent_enter: dev 259,32 ino 1311176 lblk 0
2619 // Profile Saver-5504 [000] ...1 175002.714477: ext4_es_lookup_extent_exit: dev 259,32 ino 1311176 found 0 [0/0) 0
2620 // Profile Saver-5504 [000] ...1 175002.714480: ext4_ext_map_blocks_enter: dev 259,32 ino 1311176 lblk 0 len 1 flags
2621 // Profile Saver-5504 [000] ...1 175002.714485: ext4_es_find_delayed_extent_range_enter: dev 259,32 ino 1311176 lblk 0
2622 // 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
2623 // Profile Saver-5504 [000] ...1 175002.714490: ext4_es_insert_extent: dev 259,32 ino 1311176 es [0/4294967295) mapped 576460752303423487 status H
2624 // 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
2625 // 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
2626 // Profile Saver-5504 [000] ...1 175002.714505: ext4_es_insert_extent: dev 259,32 ino 1311176 es [0/1) mapped 576460752303423487 status D
2627 // Profile Saver-5504 [000] ...1 175002.714513: ext4_da_write_end: dev 259,32 ino 1311176 pos 0 len 4 copied 4
2628 // Profile Saver-5504 [000] ...1 175002.714519: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
2629 // Profile Saver-5504 [000] ...1 175002.714520: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
2630 // Profile Saver-5504 [000] ...1 175002.714527: ext4_da_write_begin: dev 259,32 ino 1311176 pos 4 len 4 flags 0
2631 // 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
2632 // Profile Saver-5504 [000] ...1 175002.714531: ext4_da_write_end: dev 259,32 ino 1311176 pos 4 len 4 copied 4
2633 // Profile Saver-5504 [000] ...1 175002.714532: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
2634 // Profile Saver-5504 [000] ...1 175002.714532: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
2635 // Profile Saver-5504 [000] ...1 175002.715313: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
2636 // Profile Saver-5504 [000] ...1 175002.715322: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
2637 // Profile Saver-5504 [000] ...1 175002.723849: ext4_da_write_begin: dev 259,32 ino 1311176 pos 8 len 5 flags 0
2638 // 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
2639 // Profile Saver-5504 [000] ...1 175002.723873: ext4_da_write_end: dev 259,32 ino 1311176 pos 8 len 5 copied 5
2640 // Profile Saver-5504 [000] ...1 175002.723877: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
2641 // Profile Saver-5504 [000] ...1 175002.723879: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
2642 // Profile Saver-5504 [000] ...1 175002.726857: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
2643 // Profile Saver-5504 [000] ...1 175002.726867: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
2644 // Profile Saver-5504 [000] ...1 175002.726881: ext4_da_write_begin: dev 259,32 ino 1311176 pos 13 len 4 flags 0
2645 // 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
2646 // Profile Saver-5504 [000] ...1 175002.726890: ext4_da_write_end: dev 259,32 ino 1311176 pos 13 len 4 copied 4
2647 // Profile Saver-5504 [000] ...1 175002.726892: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
2648 // Profile Saver-5504 [000] ...1 175002.726892: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
2649 // Profile Saver-5504 [000] ...1 175002.726900: ext4_da_write_begin: dev 259,32 ino 1311176 pos 17 len 4079 flags 0
2650 // 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
2651 // Profile Saver-5504 [000] ...1 175002.726904: ext4_da_write_end: dev 259,32 ino 1311176 pos 17 len 4079 copied 4079
2652 // Profile Saver-5504 [000] ...1 175002.726905: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
2653 // Profile Saver-5504 [000] ...1 175002.726906: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
2654 // Profile Saver-5504 [000] ...1 175002.726908: ext4_da_write_begin: dev 259,32 ino 1311176 pos 4096 len 2780 flags 0
2655 // 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
2656 // Profile Saver-5504 [000] ...1 175002.726921: ext4_es_lookup_extent_enter: dev 259,32 ino 1311176 lblk 1
2657 // Profile Saver-5504 [000] ...1 175002.726924: ext4_es_lookup_extent_exit: dev 259,32 ino 1311176 found 1 [1/4294967294) 576460752303423487 H0x10
2658 // 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
2659 // Profile Saver-5504 [000] ...1 175002.726933: ext4_es_insert_extent: dev 259,32 ino 1311176 es [1/1) mapped 576460752303423487 status D
2660 // Profile Saver-5504 [000] ...1 175002.726940: ext4_da_write_end: dev 259,32 ino 1311176 pos 4096 len 2780 copied 2780
2661 // Profile Saver-5504 [000] ...1 175002.726941: ext4_journal_start: dev 259,32 blocks, 2 rsv_blocks, 0 caller ext4_dirty_inode+0x30/0x68
2662 // Profile Saver-5504 [000] ...1 175002.726942: ext4_mark_inode_dirty: dev 259,32 ino 1311176 caller ext4_dirty_inode+0x48/0x68
2663 // 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
2664 // d.process.acor-27885 [000] ...1 175018.227699: ext4_mark_inode_dirty: dev 259,32 ino 3278189 caller ext4_dirty_inode+0x48/0x68
2665 // d.process.acor-27885 [000] ...1 175018.227839: ext4_sync_file_enter: dev 259,32 ino 3278183 parent 3277001 datasync 1
2666 // 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
2667 // 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
2668 // clang-format on
2669
2670 static ExamplePage g_full_page_ext4{
2671 "synthetic",
2672 R"(
2673 00000000: 50fe 5852 279f 0000 c80f 00c0 ffff ffff P.XR'...........
2674 00000010: 0800 0000 5701 0001 8406 0000 2000 3010 ....W....... .0.
2675 00000020: 566b 0000 8829 e86a 91ff ffff 0200 0000 Vk...).j........
2676 00000030: 0000 0000 2873 0100 1b01 0001 8406 0000 ....(s..........
2677 00000040: 2000 3010 9200 0000 1500 2c00 0000 0000 .0.......,.....
2678 00000050: a029 e86a 91ff ffff 0ac8 0400 1e01 0001 .).j............
2679 00000060: 8406 0000 2000 3010 2866 0100 1500 2c00 .... .0.(f....,.
2680 00000070: 0000 0000 0050 0000 0000 0000 0010 0000 .....P..........
2681 00000080: 0000 0000 a804 0400 5701 0001 8406 0000 ........W.......
2682 00000090: 2000 3010 91ff ffff 586f e86a 91ff ffff .0.....Xo.j....
2683 000000a0: 0100 0000 0000 0000 c83a 0300 6c01 0001 .........:..l...
2684 000000b0: 8406 0000 2000 3010 0000 0000 1500 2c00 .... .0.......,.
2685 000000c0: 0000 0000 0500 0000 5701 0001 ac6c 0100 ........W....l..
2686 000000d0: 6d01 0001 8406 0000 2000 3010 91ff ffff m....... .0.....
2687 000000e0: 1500 2c00 0000 0000 0500 0000 faff ffff ..,.............
2688 000000f0: ffff ffff ffff ff07 184e 0000 0100 0000 .........N......
2689 00000100: ec08 0200 3f01 0002 8406 0000 2000 3010 ....?....... .0.
2690 00000110: 0000 0000 1500 2c00 0000 0000 0800 0000 ......,.........
2691 00000120: 0000 0000 0600 0000 0000 0000 8081 0000 ................
2692 00000130: 0000 0000 ec24 0100 6701 0001 8406 0000 .....$..g.......
2693 00000140: 2000 3010 0000 0000 1500 2c00 0000 0000 .0.......,.....
2694 00000150: 0500 0000 0100 0000 ffff ffff ffff ff07 ................
2695 00000160: 0400 0000 7b04 3200 2a30 0500 2101 0001 ....{.2.*0..!...
2696 00000170: 8406 0000 2000 3010 0000 0000 1500 2c00 .... .0.......,.
2697 00000180: 0000 0000 0050 0000 0000 0000 0010 0000 .....P..........
2698 00000190: 0010 0000 288b 0200 5701 0001 8406 0000 ....(...W.......
2699 000001a0: 2000 3010 0000 0000 8829 e86a 91ff ffff .0......).j....
2700 000001b0: 0200 0000 0000 0000 0832 0100 1b01 0001 .........2......
2701 000001c0: 8406 0000 2000 3010 566b 0000 1500 2c00 .... .0.Vk....,.
2702 000001d0: 0000 0000 a029 e86a 91ff ffff eaa0 0400 .....).j........
2703 000001e0: 1e01 0001 8406 0000 2000 3010 280b 0400 ........ .0.(...
2704 000001f0: 1500 2c00 0000 0000 0060 0000 0000 0000 ..,......`......
2705 00000200: 980b 0000 0000 0000 88d0 0300 5701 0001 ............W...
2706 00000210: 8406 0000 2000 3010 566b 0000 586f e86a .... .0.Vk..Xo.j
2707 00000220: 91ff ffff 0100 0000 0000 0000 c813 0300 ................
2708 00000230: 6c01 0001 8406 0000 2000 3010 566b 0000 l....... .0.Vk..
2709 00000240: 1500 2c00 0000 0000 0600 0000 0000 0000 ..,.............
2710 00000250: ac5f 0100 6d01 0001 8406 0000 2000 3010 ._..m....... .0.
2711 00000260: 1100 3010 1500 2c00 0000 0000 0600 0000 ..0...,.........
2712 00000270: f9ff ffff ffff ffff ffff ff07 185a ea6a .............Z.j
2713 00000280: 0100 0000 4c02 0200 3f01 0002 8406 0000 ....L...?.......
2714 00000290: 2000 3010 566b 0000 1500 2c00 0000 0000 .0.Vk....,.....
2715 000002a0: 0800 0000 0000 0000 0700 0000 0000 0000 ................
2716 000002b0: 8081 0000 6d01 0001 0c0b 0100 6701 0001 ....m.......g...
2717 000002c0: 8406 0000 2000 3010 0000 0000 1500 2c00 .... .0.......,.
2718 000002d0: 0000 0000 0600 0000 0100 0000 ffff ffff ................
2719 000002e0: ffff ff07 049a 0100 5701 0001 aa1c 0500 ........W.......
2720 000002f0: 2101 0001 8406 0000 2000 3010 91ff ffff !....... .0.....
2721 00000300: 1500 2c00 0000 0000 0060 0000 0000 0000 ..,......`......
2722 00000310: 980b 0000 980b 0000 889e 0200 5701 0001 ............W...
2723 00000320: 8406 0000 2000 3010 91ff ffff 8829 e86a .... .0......).j
2724 00000330: 91ff ffff 0200 0000 0000 0000 8838 0100 .............8..
2725 00000340: 1b01 0001 8406 0000 2000 3010 91ff ffff ........ .0.....
2726 00000350: 1500 2c00 0000 0000 a029 e86a 91ff ffff ..,......).j....
2727 00000360: 2ab8 1800 3501 0001 8406 0000 2000 3010 *...5....... .0.
2728 00000370: feff ffff 1500 2c00 0000 0000 0800 2c00 ......,.......,.
2729 00000380: 0000 0000 0000 0000 2000 3010 32fe 0300 ........ .0.2...
2730 00000390: 2201 0001 8406 0000 2000 3010 0000 0000 "....... .0.....
2731 000003a0: 1500 2c00 0000 0000 ffff ffff ffff ff7f ..,.............
2732 000003b0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
2733 000003c0: ffff ffff ffff ff7f 0000 0000 0000 0000 ................
2734 000003d0: 0100 0000 0000 0000 887e 0800 5701 0001 .........~..W...
2735 000003e0: 8406 0000 2000 3010 7b04 3200 7c3f e86a .... .0.{.2.|?.j
2736 000003f0: 91ff ffff 0a00 0000 0000 0000 ec2d 0300 .............-..
2737 00000400: 2301 0001 8406 0000 2000 3010 7b04 3200 #....... .0.{.2.
2738 00000410: 1500 2c00 0000 0000 0000 0000 0000 0000 ..,.............
2739 00000420: ffff ffff ffff ff7f 0100 0000 3c01 0001 ............<...
2740 00000430: 0a42 0c00 2401 0001 8406 0000 2000 3010 .B..$....... .0.
2741 00000440: 0800 0000 1500 2c00 0000 0000 0000 0000 ......,.........
2742 00000450: 0000 0000 0700 0000 0002 0000 885f 0100 ............._..
2743 00000460: 6c01 0001 8406 0000 2000 3010 0100 0000 l....... .0.....
2744 00000470: 1500 2c00 0000 0000 0000 0000 566b 0000 ..,.........Vk..
2745 00000480: 0c25 0100 6d01 0001 8406 0000 2000 3010 .%..m....... .0.
2746 00000490: 0400 0000 1500 2c00 0000 0000 0000 0000 ......,.........
2747 000004a0: 0700 0000 ffff ffff ffff ff07 1400 0000 ................
2748 000004b0: 0100 0000 caee 0100 5101 0001 8406 0000 ........Q.......
2749 000004c0: 2000 3010 1100 0000 1500 2c00 0000 0000 .0.......,.....
2750 000004d0: 0000 0000 0700 0000 2500 0000 2000 3010 ........%... .0.
2751 000004e0: 323b 0600 3201 0001 8406 0000 2000 3010 2;..2....... .0.
2752 000004f0: c86e 0000 1500 2c00 0000 0000 0700 0000 .n....,.........
2753 00000500: 0000 0000 0000 0000 0000 0000 0080 b000 ................
2754 00000510: 0000 0000 0000 0000 0000 0000 0000 0000 ................
2755 00000520: 0000 0000 2024 0000 0400 0000 ae0a 1a00 .... $..........
2756 00000530: 3a01 0001 8406 0000 2000 3010 0000 0000 :....... .0.....
2757 00000540: 1500 2c00 0000 0000 0000 0000 0000 0000 ..,.............
2758 00000550: 6101 0000 0700 0000 0000 0000 cf63 0000 a............c..
2759 00000560: 4100 0000 0700 0000 b4c5 0200 3301 0001 A...........3...
2760 00000570: 8406 0000 2000 3010 2000 3010 1500 2c00 .... .0. .0...,.
2761 00000580: 0000 0000 cfe3 2000 0000 0000 0700 0000 ...... .........
2762 00000590: 0000 0000 0000 0000 0000 0000 0080 b000 ................
2763 000005a0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
2764 000005b0: 0000 0000 2024 0000 6c01 0001 4859 0400 .... $..l...HY..
2765 000005c0: 1b01 0001 8406 0000 2000 3010 0000 0000 ........ .0.....
2766 000005d0: 1500 2c00 0000 0000 9c99 ea6a 91ff ffff ..,........j....
2767 000005e0: c850 0500 6001 0001 8406 0000 2000 3010 .P..`....... .0.
2768 000005f0: 0000 0000 1500 2c00 0000 0000 0000 0000 ......,.........
2769 00000600: 0700 0000 2ee6 0200 3e01 0002 8406 0000 ........>.......
2770 00000610: 2000 3010 566b 0000 1500 2c00 0000 0000 .0.Vk....,.....
2771 00000620: 0800 0000 0000 0000 0700 0000 0700 0000 ................
2772 00000630: 0000 0000 0000 0000 0100 0000 8081 3010 ..............0.
2773 00000640: a804 0400 5701 0001 8406 0000 2000 3010 ....W....... .0.
2774 00000650: cb07 3200 885a ea6a 91ff ffff 0100 0000 ..2..Z.j........
2775 00000660: 0000 0000 8875 0300 6c01 0001 8406 0000 .....u..l.......
2776 00000670: 2000 3010 0300 0000 0300 0000 0000 0000 .0.............
2777 00000680: 0100 0000 0100 0000 ccd4 0100 6d01 0001 ............m...
2778 00000690: 8406 0000 2000 3010 cb07 3200 0300 0000 .... .0...2.....
2779 000006a0: 0000 0000 0000 0000 0200 0000 2724 0000 ............'$..
2780 000006b0: 0000 0000 1100 3010 0100 0000 a850 0500 ......0......P..
2781 000006c0: 5701 0001 8406 0000 2000 3010 0000 0000 W....... .0.....
2782 000006d0: 885a ea6a 91ff ffff 0100 0000 0000 0000 .Z.j............
2783 000006e0: 680f 0200 6c01 0001 8406 0000 2000 3010 h...l....... .0.
2784 000006f0: 0000 0000 0400 0000 0000 0000 0100 0000 ................
2785 00000700: 6d01 0001 ac79 0100 6d01 0001 8406 0000 m....y..m.......
2786 00000710: 2000 3010 0000 0000 0400 0000 0000 0000 .0.............
2787 00000720: 0000 0000 0200 0000 2924 0000 0000 0000 ........)$......
2788 00000730: 1143 0200 0100 0000 2818 0400 5701 0001 .C......(...W...
2789 00000740: 8406 0000 2000 3010 0000 0000 8829 e86a .... .0......).j
2790 00000750: 91ff ffff 0200 0000 0000 0000 8838 0100 .............8..
2791 00000760: 1b01 0001 8406 0000 2000 3010 0400 0000 ........ .0.....
2792 00000770: 1500 2c00 0000 0000 a029 e86a 91ff ffff ..,......).j....
2793 00000780: 0e89 0300 5301 0001 8406 0000 2000 3010 ....S....... .0.
2794 00000790: e128 0000 1500 2c00 0000 0000 2500 0000 .(....,.....%...
2795 000007a0: 0000 0000 cfe3 2000 0000 0000 0000 0000 ...... .........
2796 000007b0: 0700 0000 6000 0000 0700 0000 aca0 0100 ....`...........
2797 000007c0: 6701 0001 8406 0000 2000 3010 e128 0000 g....... .0..(..
2798 000007d0: 1500 2c00 0000 0000 0000 0000 0700 0000 ..,.............
2799 000007e0: cfe3 2000 0000 0000 01a2 0800 0000 0000 .. .............
2800 000007f0: 28b2 1e00 1b01 0001 8406 0000 2000 3010 (........... .0.
2801 00000800: e128 0000 1500 2c00 0000 0000 9846 e86a .(....,......F.j
2802 00000810: 91ff ffff 68d2 1b00 5701 0001 8406 0000 ....h...W.......
2803 00000820: 2000 3010 e128 0000 7c3f e86a 91ff ffff .0..(..|?.j....
2804 00000830: 0a00 0000 0000 0000 0c57 0200 2301 0001 .........W..#...
2805 00000840: 8406 0000 2000 3010 006c 0000 1500 2c00 .... .0..l....,.
2806 00000850: 0000 0000 0700 0000 0000 0000 f8ff ffff ................
2807 00000860: ffff ff7f 0100 0000 0000 0000 6e69 8200 ............ni..
2808 00000870: 2501 0001 8406 0000 2000 3010 ca6e 0000 %....... .0..n..
2809 00000880: 1500 2c00 0000 0000 0000 0000 0700 0000 ..,.............
2810 00000890: 0000 0000 0000 0000 0700 0000 0000 0000 ................
2811 000008a0: 0100 0000 0200 3010 3e13 bd82 5500 0000 ......0.>...U...
2812 000008b0: 0600 0000 3001 0001 8015 0000 2000 3010 ....0....... .0.
2813 000008c0: 0000 0000 c801 1400 0000 0000 8860 4404 .............`D.
2814 000008d0: 1c01 0001 8015 0000 2000 3010 2000 0000 ........ .0. ...
2815 000008e0: c801 1400 0000 0000 0000 0000 0000 0000 ................
2816 000008f0: 88a9 0300 5701 0001 8015 0000 2000 3010 ....W....... .0.
2817 00000900: 0400 0000 1c1e e86a 91ff ffff 0300 0000 .......j........
2818 00000910: 0000 0000 a85a 1600 1b01 0001 8015 0000 .....Z..........
2819 00000920: 2000 3010 2000 3010 c801 1400 0000 0000 .0. .0.........
2820 00000930: c41e e86a 91ff ffff ca95 1c00 2901 0001 ...j........)...
2821 00000940: 8015 0000 2000 3010 2000 3010 c801 1400 .... .0. .0.....
2822 00000950: 0000 0000 0000 0000 0000 0000 0000 0000 ................
2823 00000960: 0010 0000 c8fb 0100 2801 0001 8015 0000 ........(.......
2824 00000970: 2000 3010 5101 0001 c801 1400 0000 0000 .0.Q...........
2825 00000980: 0000 0000 0000 0000 6af1 0600 2901 0001 ........j...)...
2826 00000990: 8015 0000 2000 3010 0000 0000 c801 1400 .... .0.........
2827 000009a0: 0000 0000 0100 0000 0000 0000 0000 0000 ................
2828 000009b0: 0010 0000 488f 0000 2801 0001 8015 0000 ....H...(.......
2829 000009c0: 2000 3010 0200 ffff c801 1400 0000 0000 .0.............
2830 000009d0: 0100 0000 0000 0000 483b 0900 4d01 0001 ........H;..M...
2831 000009e0: 8015 0000 2000 3010 0000 0000 c801 1400 .... .0.........
2832 000009f0: 0000 0000 1800 0000 0000 0000 8852 0100 .............R..
2833 00000a00: 5701 0001 8015 0000 2000 3010 e128 0000 W....... .0..(..
2834 00000a10: 9ce9 e76a 91ff ffff 0a00 0000 0000 0000 ...j............
2835 00000a20: e615 0200 3001 0001 8015 0000 2000 3010 ....0....... .0.
2836 00000a30: 0155 0000 c801 1400 0000 0000 68d0 0000 .U..........h...
2837 00000a40: 1b01 0001 8015 0000 2000 3010 6606 3200 ........ .0.f.2.
2838 00000a50: c801 1400 0000 0000 acfa ea6a 91ff ffff ...........j....
2839 00000a60: 6a0f 0200 6901 0001 8015 0000 2000 3010 j...i....... .0.
2840 00000a70: 7106 3200 c801 1400 0000 0000 0000 0000 q.2.............
2841 00000a80: 0000 0000 ffff ffff 0000 0000 e895 0300 ................
2842 00000a90: 5701 0001 8015 0000 2000 3010 0300 0000 W....... .0.....
2843 00000aa0: acbe ea6a 91ff ffff 0100 0000 0000 0000 ...j............
2844 00000ab0: 8a38 0100 6501 0001 8015 0000 2000 3010 .8..e....... .0.
2845 00000ac0: c41e e86a c801 1400 0000 0000 0000 0000 ...j............
2846 00000ad0: feff ffff 0000 0000 0000 0000 ee86 0400 ................
2847 00000ae0: 6301 0001 8015 0000 2000 3010 0000 0000 c....... .0.....
2848 00000af0: c801 1400 0000 0000 0000 0000 0000 0000 ................
2849 00000b00: 0000 0000 0000 0000 4285 5000 0000 0000 ........B.P.....
2850 00000b10: 0200 0000 0000 0000 8e36 0200 6201 0001 .........6..b...
2851 00000b20: 8015 0000 2000 3010 7d55 0000 c801 1400 .... .0.}U......
2852 00000b30: 0000 0000 0000 0000 0100 0000 0000 0000 ................
2853 00000b40: 0000 0000 4285 5000 0000 0000 0000 0000 ....B.P.........
2854 00000b50: 0200 3010 8c5f 0100 3401 0001 8015 0000 ..0.._..4.......
2855 00000b60: 2000 3010 0000 0000 c801 1400 0000 0000 .0.............
2856 00000b70: 4285 5000 0000 0000 0200 0000 0000 0000 B.P.............
2857 00000b80: 1000 0000 8081 0000 aa43 0500 3c01 0001 .........C..<...
2858 00000b90: 8015 0000 2000 3010 2801 0001 c801 1400 .... .0.(.......
2859 00000ba0: 0000 0000 4205 0000 a100 0000 0200 0000 ....B...........
2860 00000bb0: 0200 0000 8871 0800 5701 0001 8015 0000 .....q..W.......
2861 00000bc0: 2000 3010 2000 3010 885a ea6a 91ff ffff .0. .0..Z.j....
2862 00000bd0: 0100 0000 0000 0000 4825 0400 6c01 0001 ........H%..l...
2863 00000be0: 8015 0000 2000 3010 2801 0001 0300 0000 .... .0.(.......
2864 00000bf0: 0000 0000 0400 0000 7106 3200 0c73 0100 ........q.2..s..
2865 00000c00: 6d01 0001 8015 0000 2000 3010 2901 0001 m....... .0.)...
2866 00000c10: 0300 0000 0000 0000 0400 0000 0100 0000 ................
2867 00000c20: 2680 0800 0000 0000 1100 0000 0100 0000 &...............
2868 00000c30: c845 0400 5701 0001 8015 0000 2000 3010 .E..W....... .0.
2869 00000c40: 2000 3010 885a ea6a 91ff ffff 0100 0000 .0..Z.j........
2870 00000c50: 0000 0000 e8c9 0000 6c01 0001 8015 0000 ........l.......
2871 00000c60: 2000 3010 2000 3010 0400 0000 0000 0000 .0. .0.........
2872 00000c70: 0800 0000 0500 0000 6cdd 0000 6d01 0001 ........l...m...
2873 00000c80: 8015 0000 2000 3010 2801 0001 0400 0000 .... .0.(.......
2874 00000c90: 0000 0000 0800 0000 0300 0000 1290 7000 ..............p.
2875 00000ca0: 0000 0000 1100 0000 0100 0000 6875 0300 ............hu..
2876 00000cb0: 5701 0001 8015 0000 2000 3010 7106 3200 W....... .0.q.2.
2877 00000cc0: 8829 e86a 91ff ffff 0200 0000 0000 0000 .).j............
2878 00000cd0: a847 0000 1b01 0001 8015 0000 2000 3010 .G.......... .0.
2879 00000ce0: 9ce9 e76a c801 1400 0000 0000 a029 e86a ...j.........).j
2880 00000cf0: 91ff ffff e83a 0300 1b01 0001 8015 0000 .....:..........
2881 00000d00: 2000 3010 7106 3200 c801 1400 0000 0000 .0.q.2.........
2882 00000d10: 9c99 ea6a 91ff ffff ae93 0100 6601 0001 ...j........f...
2883 00000d20: 8015 0000 2000 3010 acfa ea6a c801 1400 .... .0....j....
2884 00000d30: 0000 0000 0000 0000 feff ffff 0000 0000 ................
2885 00000d40: 2000 3010 0000 0000 0000 0000 0000 0000 .0.............
2886 00000d50: 0000 0000 48b6 0000 1b01 0001 8015 0000 ....H...........
2887 00000d60: 2000 3010 e128 0000 c801 1400 0000 0000 .0..(..........
2888 00000d70: 9c99 ea6a 91ff ffff a8ea 0300 1b01 0001 ...j............
2889 00000d80: 8015 0000 2000 3010 e128 0000 c801 1400 .... .0..(......
2890 00000d90: 0000 0000 08eb e76a 91ff ffff 885f 0100 .......j....._..
2891 00000da0: 4e01 0001 8015 0000 2000 3010 2efe 0300 N....... .0.....
2892 00000db0: c801 1400 0000 0000 0800 0000 0000 0000 ................
2893 00000dc0: e8bc 0000 5701 0001 8015 0000 2000 3010 ....W....... .0.
2894 00000dd0: 0000 0000 8829 e86a 91ff ffff 0200 0000 .....).j........
2895 00000de0: 0000 0000 c895 0000 1b01 0001 8015 0000 ................
2896 00000df0: 2000 3010 2000 3010 c801 1400 0000 0000 .0. .0.........
2897 00000e00: a029 e86a 91ff ffff cab2 0b00 1e01 0001 .).j............
2898 00000e10: 8015 0000 2000 3010 0000 0000 c801 1400 .... .0.........
2899 00000e20: 0000 0000 0000 0000 0000 0000 0400 0000 ................
2900 00000e30: 0000 0000 689a 0400 5701 0001 8015 0000 ....h...W.......
2901 00000e40: 2000 3010 0000 0000 586f e86a 91ff ffff .0.....Xo.j....
2902 00000e50: 0100 0000 0000 0000 8884 0200 6c01 0001 ............l...
2903 00000e60: 8015 0000 2000 3010 8829 e86a c801 1400 .... .0..).j....
2904 00000e70: 0000 0000 0000 0000 4100 0000 ac47 0000 ........A....G..
2905 00000e80: 6d01 0001 8015 0000 2000 3010 e128 0000 m....... .0..(..
2906 00000e90: c801 1400 0000 0000 0000 0000 0000 0000 ................
2907 00000ea0: 0000 0000 0000 0000 001c 0200 0000 0000 ................
2908 00000eb0: 2a66 0100 5101 0001 8015 0000 2000 3010 *f..Q....... .0.
2909 00000ec0: 0000 0000 c801 1400 0000 0000 0000 0000 ................
2910 00000ed0: 0100 0000 0000 0000 2000 3010 087e 0200 ........ .0..~..
2911 00000ee0: 6a01 0001 8015 0000 2000 3010 0100 0000 j....... .0.....
2912 00000ef0: c801 1400 0000 0000 0000 0000 0100 0000 ................
2913 00000f00: 8c11 0100 6b01 0001 8015 0000 2000 3010 ....k....... .0.
2914 00000f10: 1b01 0001 c801 1400 0000 0000 0000 0000 ................
2915 00000f20: 0000 0000 0000 0000 0000 0000 0028 0000 .............(..
2916 00000f30: 2000 3010 8c5f 0100 6701 0001 8015 0000 .0.._..g.......
2917 00000f40: 2000 3010 0000 0000 c801 1400 0000 0000 .0.............
2918 00000f50: 0000 0000 ffff ffff ffff ffff ffff ff07 ................
2919 00000f60: 0800 0000 0700 0000 6e02 0200 5301 0001 ........n...S...
2920 00000f70: 8015 0000 2000 3010 0100 0000 c801 1400 .... .0.........
2921 00000f80: 0000 0000 0000 0000 2000 3010 0000 0000 ........ .0.....
2922 00000f90: 0100 0000 0000 0000 0100 0000 0000 0000 ................
2923 00000fa0: 0000 0000 cc3a 0300 3f01 0002 8015 0000 .....:..?.......
2924 00000fb0: 2000 3010 7106 3200 c801 1400 0000 0000 .0.q.2.........
2925 00000fc0: 0800 0000 0000 0000 0100 0000 0000 0000 ................
2926 00000fd0: 8081 3010 3d00 0000 f542 0000 0000 0000 ..0.=....B......
2927 00000fe0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
2928 00000ff0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
2929 )",
2930 };
2931
TEST_F(CpuReaderParsePagePayloadTest,ParseExt4WithOverwrite)2932 TEST_F(CpuReaderParsePagePayloadTest, ParseExt4WithOverwrite) {
2933 const ExamplePage* test_case = &g_full_page_ext4;
2934
2935 ProtoTranslationTable* table = GetTable(test_case->name);
2936 auto page = PageFromXxd(test_case->data);
2937
2938 FtraceDataSourceConfig ds_config = EmptyConfig();
2939 ds_config.event_filter.AddEnabledEvent(
2940 table->EventToFtraceId(GroupAndName("sched", "sched_switch")));
2941
2942 const uint8_t* parse_pos = page.get();
2943 std::optional<CpuReader::PageHeader> page_header =
2944 CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
2945
2946 const uint8_t* page_end = page.get() + base::GetSysPageSize();
2947 ASSERT_TRUE(page_header.has_value());
2948 EXPECT_TRUE(page_header->lost_events); // data loss
2949 EXPECT_LE(parse_pos + page_header->size, page_end);
2950
2951 FtraceParseStatus status = CpuReader::ParsePagePayload(
2952 parse_pos, &page_header.value(), table, &ds_config,
2953 CreateBundler(ds_config), &metadata_, &last_read_event_ts_);
2954
2955 EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_OK);
2956
2957 EXPECT_THAT(AllTracePackets(), IsEmpty());
2958 }
2959
2960 // Page with a single event containing a __data_loc entry with value 0x0000
2961 //
2962 // [timestamp ] [32 byte payload next ]
2963 // 00000000: D7 B3 0A 57 CF 02 00 00 20 00 00 00 00 00 00 00 ...W.... .......
2964 // [evt hdr ] [id ]
2965 // 00000010: 67 A6 13 00 0F 06 00 00 3D 01 00 00 45 00 00 00 g.......=...E...
2966 // 00000020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
2967 //
2968 // name: tracing_mark_write
2969 // ID: 1551
2970 // format:
2971 // field:unsigned short common_type; offset:0; size:2; signed:0;
2972 // field:unsigned char common_flags; offset:2; size:1; signed:0;
2973 // field:unsigned char common_preempt_count; offset:3; size:1;
2974 // signed:0; field:int common_pid; offset:4; size:4; signed:1;
2975 //
2976 // field:char type; offset:8; size:1; signed:0;
2977 // field:int pid; offset:12; size:4; signed:1;
2978 // field:__data_loc char[] name; offset:16; size:4; signed:0;
2979 // field:int value; offset:20; size:4; signed:1;
2980 //
2981 static char g_zero_data_loc[] =
2982 R"(
2983 00000000: D7B3 0A57 CF02 0000 2000 0000 0000 0000 ...W.... .......
2984 00000010: 67A6 1300 0F06 0000 3D01 0000 4500 0000 g.......=...E...
2985 00000020: 0000 0000 0000 0000 0000 0000 0000 0000 ................
2986 00000030: 0000 0000 0000 0000 0000 0000 0000 0000 ................
2987 )";
2988
2989 TEST_F(CpuReaderParsePagePayloadTest, ZeroLengthDataLoc) {
2990 auto page = PageFromXxd(g_zero_data_loc);
2991
2992 // Hand-build a translation table that handles dpu/tracing_mark_write for this
2993 // test page.
2994 // TODO(rsavitski): look into making these tests less verbose by feeding a
2995 // format string through proto_translation_table to get the format.
2996 std::vector<Field> common_fields;
2997 { // common_pid
2998 common_fields.emplace_back(Field{});
2999 Field* field = &common_fields.back();
3000 field->ftrace_offset = 4;
3001 field->ftrace_size = 4;
3002 field->ftrace_type = kFtraceCommonPid32;
3003 field->proto_field_id = 2;
3004 field->proto_field_type = ProtoSchemaType::kInt32;
3005 SetTranslationStrategy(field->ftrace_type, field->proto_field_type,
3006 &field->strategy);
3007 }
3008 using Dpu = protos::gen::DpuTracingMarkWriteFtraceEvent;
3009 Event evt{"tracing_mark_write",
3010 "dpu",
3011 {
3012 {8, 1, FtraceFieldType::kFtraceUint8, "type",
3013 Dpu::kTypeFieldNumber, ProtoSchemaType::kUint32,
3014 TranslationStrategy::kInvalidTranslationStrategy},
3015 {12, 4, FtraceFieldType::kFtraceInt32, "pid",
3016 Dpu::kPidFieldNumber, ProtoSchemaType::kInt32,
3017 TranslationStrategy::kInvalidTranslationStrategy},
3018 {16, 4, FtraceFieldType::kFtraceDataLoc, "name",
3019 Dpu::kNameFieldNumber, ProtoSchemaType::kString,
3020 TranslationStrategy::kInvalidTranslationStrategy},
3021 {20, 4, FtraceFieldType::kFtraceInt32, "value",
3022 Dpu::kValueFieldNumber, ProtoSchemaType::kInt32,
3023 TranslationStrategy::kInvalidTranslationStrategy},
3024 },
3025 /*ftrace_event_id=*/1551,
3026 /*proto_field_id=*/348,
3027 /*size=*/24};
3028 for (Field& field : evt.fields) {
3029 SetTranslationStrategy(field.ftrace_type, field.proto_field_type,
3030 &field.strategy);
3031 }
3032 std::vector<Event> events;
3033 events.emplace_back(std::move(evt));
3034
3035 NiceMock<MockFtraceProcfs> mock_ftrace;
3036 PrintkMap printk_formats;
3037 ProtoTranslationTable translation_table(
3038 &mock_ftrace, events, std::move(common_fields),
3039 ProtoTranslationTable::DefaultPageHeaderSpecForTesting(),
3040 InvalidCompactSchedEventFormatForTesting(), printk_formats);
3041 ProtoTranslationTable* table = &translation_table;
3042
3043 FtraceDataSourceConfig ds_config = EmptyConfig();
3044 ds_config.event_filter.AddEnabledEvent(
3045 table->EventToFtraceId(GroupAndName("dpu", "tracing_mark_write")));
3046
3047 FtraceMetadata metadata{};
3048 const uint8_t* parse_pos = page.get();
3049 std::optional<CpuReader::PageHeader> page_header =
3050 CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
3051
3052 const uint8_t* page_end = page.get() + base::GetSysPageSize();
3053 ASSERT_TRUE(page_header.has_value());
3054 EXPECT_FALSE(page_header->lost_events);
3055 EXPECT_LE(parse_pos + page_header->size, page_end);
3056
3057 FtraceParseStatus status = CpuReader::ParsePagePayload(
3058 parse_pos, &page_header.value(), table, &ds_config,
3059 CreateBundler(ds_config), &metadata_, &last_read_event_ts_);
3060
3061 // successfully parsed the whole 32 byte event
3062 ASSERT_EQ(32u, page_header->size);
3063 EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_OK);
3064
3065 auto bundle = GetBundle();
3066 EXPECT_EQ(bundle.event().size(), 1u);
3067 const protos::gen::FtraceEvent& event = bundle.event()[0];
3068 EXPECT_EQ(event.pid(), 317u);
3069 EXPECT_EQ(event.dpu_tracing_mark_write().type(), 69u);
3070 EXPECT_EQ(event.dpu_tracing_mark_write().pid(), 0);
3071 EXPECT_EQ(event.dpu_tracing_mark_write().value(), 0);
3072 EXPECT_EQ(event.dpu_tracing_mark_write().name(), "");
3073 }
3074
3075 static ExamplePage g_zero_padded{
3076 "synthetic",
3077 R"(
3078 00000000: DBF4 87FE F901 0000 F00F 0000 0000 0000 ................
3079 00000010: 0700 0000 0500 0000 EE02 0000 50AA 4C00 ............P.L.
3080 00000020: AEFF FFFF 457C 3633 390A 0000 0000 0000 ....E|639.......
3081 00000030: E939 1300 0500 0000 EE02 0000 50AA 4C00 .9..........P.L.
3082 00000040: AEFF FFFF 427C 3633 397C 6361 6E63 656C ....B|639|cancel
3083 00000050: 2074 696D 6572 0A00 4753 0A00 0500 0000 timer..GS......
3084 00000060: EE02 0000 50AA 4C00 AEFF FFFF 457C 3633 ....P.L.....E|63
3085 00000070: 390A 0000 0000 0000 C929 0800 0500 0000 9........)......
3086 00000080: EE02 0000 50AA 4C00 AEFF FFFF 437C 3633 ....P.L.....C|63
3087 00000090: 397C 5653 594E 432D 6170 707C 310A 0000 9|VSYNC-app|1...
3088 000000A0: 2A48 0600 6500 0101 EE02 0000 6170 7000 *H..e.......app.
3089 000000B0: 6163 6566 6C69 6E67 6572 0000 EF02 0000 aceflinger......
3090 000000C0: 6100 0000 0100 0000 0200 0000 E94D 1900 a............M..
3091 000000D0: 0500 0000 EE02 0000 50AA 4C00 AEFF FFFF ........P.L.....
3092 000000E0: 437C 3633 397C 5653 502D 6D6F 6465 7C30 C|639|VSP-mode|0
3093 000000F0: 0A00 0000 0DD5 0400 0500 0000 EE02 0000 ................
3094 00000100: 50AA 4C00 AEFF FFFF 437C 3633 397C 5653 P.L.....C|639|VS
3095 00000110: 502D 7469 6D65 506F 696E 747C 3231 3733 P-timePoint|2173
3096 00000120: 3235 3939 3337 3132 360A 0000 2DF1 0300 259937126...-...
3097 00000130: 0500 0000 EE02 0000 50AA 4C00 AEFF FFFF ........P.L.....
3098 00000140: 437C 3633 397C 5653 502D 7072 6564 6963 C|639|VSP-predic
3099 00000150: 7469 6F6E 7C32 3137 3332 3736 3230 3036 tion|21732762006
3100 00000160: 3538 0A00 30B0 0600 0500 0000 EE02 0000 58..0...........
3101 00000170: 50AA 4C00 AEFF FFFF 427C 3633 397C 6170 P.L.....B|639|ap
3102 00000180: 7020 616C 6172 6D20 696E 2031 3632 3633 p alarm in 16263
3103 00000190: 7573 3B20 5653 594E 4320 696E 2034 3732 us; VSYNC in 472
3104 000001A0: 3633 7573 0A00 0000 878F 0300 0500 0000 63us............
3105 000001B0: EE02 0000 50AA 4C00 AEFF FFFF 457C 3633 ....P.L.....E|63
3106 000001C0: 390A 0000 0000 0000 3029 1B00 5B00 0102 9.......0)..[...
3107 000001D0: EE02 0000 5469 6D65 7244 6973 7061 7463 ....TimerDispatc
3108 000001E0: 6800 0000 EE02 0000 6100 0000 0100 0000 h.......a.......
3109 000001F0: 0000 0000 7377 6170 7065 722F 3500 0000 ....swapper/5...
3110 00000200: 0000 0000 0000 0000 7800 0000 10DC 4302 ........x.....C.
3111 00000210: 5B00 0102 0000 0000 7377 6170 7065 722F [.......swapper/
3112 00000220: 3500 0000 0000 0000 0000 0000 7800 0000 5...........x...
3113 00000230: 0000 0000 0000 0000 7263 756F 702F 3200 ........rcuop/2.
3114 00000240: 0000 0000 0000 0000 2000 0000 7800 0000 ........ ...x...
3115 00000250: CA71 0B00 6500 0102 2000 0000 7263 755F .q..e... ...rcu_
3116 00000260: 7072 6565 6D70 7400 0000 0000 0B00 0000 preempt.........
3117 00000270: 7800 0000 0100 0000 0300 0000 0859 0100 x............Y..
3118 00000280: 3700 0102 2000 0000 0B00 0000 0000 0000 7... ...........
3119 00000290: 6899 4200 AEFF FFFF 0000 0000 0000 0000 h.B.............
3120 000002A0: 300F 1B00 5B00 0102 2000 0000 7263 756F 0...[... ...rcuo
3121 000002B0: 702F 3200 0000 0000 0000 0000 2000 0000 p/2......... ...
3122 000002C0: 7800 0000 0100 0000 0000 0000 6E64 726F x...........ndro
3123 000002D0: 6964 2E73 7973 7465 6D75 6900 A009 0000 id.systemui.....
3124 000002E0: 7800 0000 17EC 3100 0500 0000 A009 0000 x.....1.........
3125 000002F0: 50AA 4C00 AEFF FFFF 427C 3234 3634 7C61 P.L.....B|2464|a
3126 00000300: 6E64 726F 6964 2E76 6965 772E 4163 6365 ndroid.view.Acce
3127 00000310: 7373 6962 696C 6974 7949 6E74 6572 6163 ssibilityInterac
3128 00000320: 7469 6F6E 436F 6E74 726F 6C6C 6572 2450 tionController$P
3129 00000330: 7269 7661 7465 4861 6E64 6C65 723A 2023 rivateHandler: #
3130 00000340: 320A 0000 8998 EB00 EA02 0000 A009 0000 2...............
3131 00000350: 4AD7 0C00 2697 0500 CE22 0000 0000 0000 J...&...."......
3132 00000360: 0000 0000 0100 0000 1100 0000 CA45 0400 .............E..
3133 00000370: EB02 0000 A009 0000 4AD7 0C00 0000 0000 ........J.......
3134 00000380: A402 0000 0000 0000 0000 0000 0000 0000 ................
3135 00000390: 0000 0000 0000 0000 CA6C 0400 6500 0104 .........l..e...
3136 000003A0: A009 0000 6269 6E64 6572 3A38 3931 305F ....binder:8910_
3137 000003B0: 3400 6F00 3C2C 0000 7800 0000 0100 0000 4.o.<,..x.......
3138 000003C0: 0400 0000 673C 3400 0500 0000 A009 0000 ....g<4.........
3139 000003D0: 50AA 4C00 AEFF FFFF 457C 3234 3634 0A00 P.L.....E|2464..
3140 000003E0: 0000 0000 10EF 2000 5B00 0102 A009 0000 ...... .[.......
3141 000003F0: 6E64 726F 6964 2E73 7973 7465 6D75 6900 ndroid.systemui.
3142 00000400: A009 0000 7800 0000 0100 0000 0000 0000 ....x...........
3143 00000410: 7377 6170 7065 722F 3500 0000 0000 0000 swapper/5.......
3144 00000420: 0000 0000 7800 0000 D098 ED01 5B00 0102 ....x.......[...
3145 00000430: 0000 0000 7377 6170 7065 722F 3500 0000 ....swapper/5...
3146 00000440: 0000 0000 0000 0000 7800 0000 0000 0000 ........x.......
3147 00000450: 0000 0000 6E64 726F 6964 2E73 7973 7465 ....ndroid.syste
3148 00000460: 6D75 6900 A009 0000 7800 0000 F761 1F00 mui.....x....a..
3149 00000470: 0500 0000 A009 0000 50AA 4C00 AEFF FFFF ........P.L.....
3150 00000480: 427C 3234 3634 7C61 6E64 726F 6964 2E76 B|2464|android.v
3151 00000490: 6965 772E 4163 6365 7373 6962 696C 6974 iew.Accessibilit
3152 000004A0: 7949 6E74 6572 6163 7469 6F6E 436F 6E74 yInteractionCont
3153 000004B0: 726F 6C6C 6572 2450 7269 7661 7465 4861 roller$PrivateHa
3154 000004C0: 6E64 6C65 723A 2023 320A 0000 E9F6 A500 ndler: #2.......
3155 000004D0: EA02 0000 A009 0000 4ED7 0C00 2697 0500 ........N...&...
3156 000004E0: CE22 0000 0000 0000 0000 0000 0100 0000 ."..............
3157 000004F0: 1100 0000 4A3F 0400 EB02 0000 A009 0000 ....J?..........
3158 00000500: 4ED7 0C00 0000 0000 2802 0000 0000 0000 N.......(.......
3159 00000510: 0000 0000 0000 0000 0000 0000 0000 0000 ................
3160 00000520: EA93 0400 6500 0104 A009 0000 6269 6E64 ....e.......bind
3161 00000530: 6572 3A38 3931 305F 3400 6F00 3C2C 0000 er:8910_4.o.<,..
3162 00000540: 7800 0000 0100 0000 0000 0000 0AD7 3A01 x.............:.
3163 00000550: 3100 1101 A009 0000 B028 39B1 CCFF FFFF 1........(9.....
3164 00000560: A837 F9A8 ADFF FFFF 0010 39B1 CCFF FFFF .7........9.....
3165 00000570: 2000 0000 FFFF FFFF 44F5 0100 2E00 1101 .......D.......
3166 00000580: A009 0000 B028 39B1 CCFF FFFF AA79 0100 .....(9......y..
3167 00000590: 6500 1102 A009 0000 6B77 6F72 6B65 722F e.......kworker/
3168 000005A0: 7531 363A 3130 0000 6001 0000 7800 0000 u16:10..`...x...
3169 000005B0: 0100 0000 0000 0000 8845 0100 3700 1102 .........E..7...
3170 000005C0: A009 0000 6001 0000 0000 0000 7C51 3800 ....`.......|Q8.
3171 000005D0: AEFF FFFF 0000 0000 0000 0000 89DD 7300 ..............s.
3172 000005E0: EA02 0000 A009 0000 50D7 0C00 2697 0500 ........P...&...
3173 000005F0: CE22 0000 0000 0000 0000 0000 0300 0000 ."..............
3174 00000600: 1100 0000 0AD5 0400 EB02 0000 A009 0000 ................
3175 00000610: 50D7 0C00 0000 0000 A404 0000 0000 0000 P...............
3176 00000620: 0000 0000 0000 0000 0000 0000 0000 0000 ................
3177 00000630: 4A7E 0500 6500 0104 A009 0000 6269 6E64 J~..e.......bind
3178 00000640: 6572 3A38 3931 305F 3400 6F00 3C2C 0000 er:8910_4.o.<,..
3179 00000650: 7800 0000 0100 0000 0000 0000 A790 2E00 x...............
3180 00000660: 0500 0000 A009 0000 50AA 4C00 AEFF FFFF ........P.L.....
3181 00000670: 457C 3234 3634 0A00 0000 0000 9048 2800 E|2464.......H(.
3182 00000680: 5B00 0102 A009 0000 6E64 726F 6964 2E73 [.......ndroid.s
3183 00000690: 7973 7465 6D75 6900 A009 0000 7800 0000 ystemui.....x...
3184 000006A0: 0100 0000 0000 0000 7377 6170 7065 722F ........swapper/
3185 000006B0: 3500 0000 0000 0000 0000 0000 7800 0000 5...........x...
3186 000006C0: B043 2100 5B00 0102 0000 0000 7377 6170 .C!.[.......swap
3187 000006D0: 7065 722F 3500 0000 0000 0000 0000 0000 per/5...........
3188 000006E0: 7800 0000 0000 0000 0000 0000 6269 6E64 x...........bind
3189 000006F0: 6572 3A32 3436 345F 3800 6900 EF0C 0000 er:2464_8.i.....
3190 00000700: 7800 0000 834C 0700 F002 0000 EF0C 0000 x....L..........
3191 00000710: 51D7 0C00 AA4E 5D00 6500 0103 EF0C 0000 Q....N].e.......
3192 00000720: 6E64 726F 6964 2E73 7973 7465 6D75 6900 ndroid.systemui.
3193 00000730: A009 0000 7800 0000 0100 0000 0500 0000 ....x...........
3194 00000740: D05E 6800 5B00 0102 EF0C 0000 6269 6E64 .^h.[.......bind
3195 00000750: 6572 3A32 3436 345F 3800 6900 EF0C 0000 er:2464_8.i.....
3196 00000760: 7800 0000 0100 0000 0000 0000 6269 6E64 x...........bind
3197 00000770: 6572 3A31 3936 375F 4200 0000 A20B 0000 er:1967_B.......
3198 00000780: 7000 0000 67CA 0600 E902 0000 A20B 0000 p...g...........
3199 00000790: AF07 0000 A20B 0000 7000 0000 7800 0000 ........p...x...
3200 000007A0: 7800 0000 B006 3B00 5B00 0102 A20B 0000 x.....;.[.......
3201 000007B0: 6269 6E64 6572 3A31 3936 375F 4200 0000 binder:1967_B...
3202 000007C0: A20B 0000 7800 0000 0100 0000 0000 0000 ....x...........
3203 000007D0: 7377 6170 7065 722F 3500 0000 0000 0000 swapper/5.......
3204 000007E0: 0000 0000 7800 0000 108B 5603 5B00 0102 ....x.....V.[...
3205 000007F0: 0000 0000 7377 6170 7065 722F 3500 0000 ....swapper/5...
3206 00000800: 0000 0000 0000 0000 7800 0000 0000 0000 ........x.......
3207 00000810: 0000 0000 6269 6E64 6572 3A32 3436 345F ....binder:2464_
3208 00000820: 3800 6900 EF0C 0000 7800 0000 831A 0600 8.i.....x.......
3209 00000830: F002 0000 EF0C 0000 56D7 0C00 AAD2 5600 ........V.....V.
3210 00000840: 6500 0103 EF0C 0000 6E64 726F 6964 2E73 e.......ndroid.s
3211 00000850: 7973 7465 6D75 6900 A009 0000 7800 0000 ystemui.....x...
3212 00000860: 0100 0000 0000 0000 B027 4100 5B00 0102 .........'A.[...
3213 00000870: EF0C 0000 6269 6E64 6572 3A32 3436 345F ....binder:2464_
3214 00000880: 3800 6900 EF0C 0000 7800 0000 0100 0000 8.i.....x.......
3215 00000890: 0000 0000 7377 6170 7065 722F 3500 0000 ....swapper/5...
3216 000008A0: 0000 0000 0000 0000 7800 0000 50F4 2A03 ........x...P.*.
3217 000008B0: 5B00 0102 0000 0000 7377 6170 7065 722F [.......swapper/
3218 000008C0: 3500 0000 0000 0000 0000 0000 7800 0000 5...........x...
3219 000008D0: 0000 0000 0000 0000 6269 6E64 6572 3A32 ........binder:2
3220 000008E0: 3436 345F 3800 6900 EF0C 0000 7800 0000 464_8.i.....x...
3221 000008F0: 831A 0600 F002 0000 EF0C 0000 5BD7 0C00 ............[...
3222 00000900: 8A08 5300 6500 0103 EF0C 0000 6E64 726F ..S.e.......ndro
3223 00000910: 6964 2E73 7973 7465 6D75 6900 A009 0000 id.systemui.....
3224 00000920: 7800 0000 0100 0000 0000 0000 B0BE 5000 x.............P.
3225 00000930: 5B00 0102 EF0C 0000 6269 6E64 6572 3A32 [.......binder:2
3226 00000940: 3436 345F 3800 6900 EF0C 0000 7800 0000 464_8.i.....x...
3227 00000950: 0100 0000 0000 0000 7377 6170 7065 722F ........swapper/
3228 00000960: 3500 0000 0000 0000 0000 0000 7800 0000 5...........x...
3229 00000970: 50A1 5A0A 5B00 0102 0000 0000 7377 6170 P.Z.[.......swap
3230 00000980: 7065 722F 3500 0000 0000 0000 0000 0000 per/5...........
3231 00000990: 7800 0000 0000 0000 0000 0000 7263 756F x...........rcuo
3232 000009A0: 702F 3200 0000 0000 0000 0000 2000 0000 p/2......... ...
3233 000009B0: 7800 0000 EA2B 0700 6500 0102 2000 0000 x....+..e... ...
3234 000009C0: 7263 756F 702F 3300 0000 0000 0000 0000 rcuop/3.........
3235 000009D0: 2800 0000 7800 0000 0100 0000 0000 0000 (...x...........
3236 000009E0: 90F9 1B00 5B00 0102 2000 0000 7263 756F ....[... ...rcuo
3237 000009F0: 702F 3200 0000 0000 0000 0000 2000 0000 p/2......... ...
3238 00000A00: 7800 0000 0100 0000 0000 0000 7377 6170 x...........swap
3239 00000A10: 7065 722F 3500 0000 0000 0000 0000 0000 per/5...........
3240 00000A20: 7800 0000 303E D509 5B00 0102 0000 0000 x...0>..[.......
3241 00000A30: 7377 6170 7065 722F 3500 0000 0000 0000 swapper/5.......
3242 00000A40: 0000 0000 7800 0000 0000 0000 0000 0000 ....x...........
3243 00000A50: 6269 6E64 6572 3A32 3436 345F 3800 6900 binder:2464_8.i.
3244 00000A60: EF0C 0000 7800 0000 03AA 0900 F002 0000 ....x...........
3245 00000A70: EF0C 0000 66D7 0C00 EAFE 7F00 6500 0103 ....f.......e...
3246 00000A80: EF0C 0000 5363 7265 656E 4465 636F 7261 ....ScreenDecora
3247 00000A90: 7469 6F00 840B 0000 7800 0000 0100 0000 tio.....x.......
3248 00000AA0: 0200 0000 7028 4A00 5B00 0102 EF0C 0000 ....p(J.[.......
3249 00000AB0: 6269 6E64 6572 3A32 3436 345F 3800 6900 binder:2464_8.i.
3250 00000AC0: EF0C 0000 7800 0000 0100 0000 0000 0000 ....x...........
3251 00000AD0: 7377 6170 7065 722F 3500 0000 0000 0000 swapper/5.......
3252 00000AE0: 0000 0000 7800 0000 908D 0406 5B00 0102 ....x.......[...
3253 00000AF0: 0000 0000 7377 6170 7065 722F 3500 0000 ....swapper/5...
3254 00000B00: 0000 0000 0000 0000 7800 0000 0000 0000 ........x.......
3255 00000B10: 0000 0000 6C6F 6764 2E72 6561 6465 722E ....logd.reader.
3256 00000B20: 7065 7200 5B06 0000 8200 0000 AAE6 2400 per.[.........$.
3257 00000B30: 6500 0102 5B06 0000 6C6F 6763 6174 0000 e...[...logcat..
3258 00000B40: 3000 0000 0000 0000 C105 0000 8200 0000 0...............
3259 00000B50: 0100 0000 0500 0000 90DB 2000 5B00 0102 .......... .[...
3260 00000B60: 5B06 0000 6C6F 6764 2E72 6561 6465 722E [...logd.reader.
3261 00000B70: 7065 7200 5B06 0000 8200 0000 0100 0000 per.[...........
3262 00000B80: 0000 0000 6C6F 6763 6174 0000 3000 0000 ....logcat..0...
3263 00000B90: 0000 0000 C105 0000 8200 0000 7060 6100 ............p`a.
3264 00000BA0: 5B00 0102 C105 0000 6C6F 6763 6174 0000 [.......logcat..
3265 00000BB0: 3000 0000 0000 0000 C105 0000 8200 0000 0...............
3266 00000BC0: 0100 0000 0000 0000 7377 6170 7065 722F ........swapper/
3267 00000BD0: 3500 0000 0000 0000 0000 0000 7800 0000 5...........x...
3268 00000BE0: D086 0202 5B00 0102 0000 0000 7377 6170 ....[.......swap
3269 00000BF0: 7065 722F 3500 0000 0000 0000 0000 0000 per/5...........
3270 00000C00: 7800 0000 0000 0000 0000 0000 6170 7000 x...........app.
3271 00000C10: 6163 6566 6C69 6E67 6572 0000 EF02 0000 aceflinger......
3272 00000C20: 6100 0000 2937 2700 0500 0000 EF02 0000 a...)7'.........
3273 00000C30: 50AA 4C00 AEFF FFFF 437C 3633 397C 5653 P.L.....C|639|VS
3274 00000C40: 502D 6D6F 6465 7C30 0A00 0000 8DC3 0300 P-mode|0........
3275 00000C50: 0500 0000 EF02 0000 50AA 4C00 AEFF FFFF ........P.L.....
3276 00000C60: 437C 3633 397C 5653 502D 7469 6D65 506F C|639|VSP-timePo
3277 00000C70: 696E 747C 3231 3733 3238 3530 3139 3236 int|217328501926
3278 00000C80: 340A 0000 6D43 0200 0500 0000 EF02 0000 4...mC..........
3279 00000C90: 50AA 4C00 AEFF FFFF 437C 3633 397C 5653 P.L.....C|639|VS
3280 00000CA0: 502D 7072 6564 6963 7469 6F6E 7C32 3137 P-prediction|217
3281 00000CB0: 3332 3932 3839 3739 3138 0A00 70FE 0600 3292897918..p...
3282 00000CC0: 0500 0000 EF02 0000 50AA 4C00 AEFF FFFF ........P.L.....
3283 00000CD0: 427C 3633 397C 6170 7020 616C 6172 6D20 B|639|app alarm
3284 00000CE0: 696E 2037 3837 3875 733B 2056 5359 4E43 in 7878us; VSYNC
3285 00000CF0: 2069 6E20 3338 3837 3875 730A 0000 0000 in 38878us.....
3286 00000D00: C7AD 0100 0500 0000 EF02 0000 50AA 4C00 ............P.L.
3287 00000D10: AEFF FFFF 457C 3633 390A 0000 0000 0000 ....E|639.......
3288 00000D20: 3028 2B00 5B00 0102 EF02 0000 6170 7000 0(+.[.......app.
3289 00000D30: 6163 6566 6C69 6E67 6572 0000 EF02 0000 aceflinger......
3290 00000D40: 6100 0000 0100 0000 0000 0000 6C6F 6764 a...........logd
3291 00000D50: 2E72 6561 6465 722E 7065 7200 C611 0000 .reader.per.....
3292 00000D60: 8200 0000 8AE1 1A00 6500 0102 C611 0000 ........e.......
3293 00000D70: 6C6F 6763 6174 002F 3000 0000 0000 0000 logcat./0.......
3294 00000D80: BE11 0000 7800 0000 0100 0000 0400 0000 ....x...........
3295 00000D90: 3074 0D00 5B00 0102 C611 0000 6C6F 6764 0t..[.......logd
3296 00000DA0: 2E72 6561 6465 722E 7065 7200 C611 0000 .reader.per.....
3297 00000DB0: 8200 0000 0001 0000 0000 0000 6C6F 6763 ............logc
3298 00000DC0: 6174 002F 3000 0000 0000 0000 BE11 0000 at./0...........
3299 00000DD0: 7800 0000 4A34 3B00 3100 0101 BE11 0000 x...J4;.1.......
3300 00000DE0: 08D4 FF74 CCFF FFFF 40C9 2900 AEFF FFFF ...t....@.).....
3301 00000DF0: 0044 8940 CBFF FFFF 2000 0000 FFFF FFFF .D.@.... .......
3302 00000E00: A486 0100 2E00 0101 BE11 0000 08D4 FF74 ...............t
3303 00000E10: CCFF FFFF EA17 0100 6500 0102 BE11 0000 ........e.......
3304 00000E20: 6B77 6F72 6B65 722F 7531 363A 3130 0000 kworker/u16:10..
3305 00000E30: 6001 0000 7800 0000 0100 0000 0200 0000 `...x...........
3306 00000E40: E8BC 0000 3700 0102 BE11 0000 6001 0000 ....7.......`...
3307 00000E50: 0000 0000 7C51 3800 AEFF FFFF 0000 0000 ....|Q8.........
3308 00000E60: 0000 0000 B074 1600 5B00 0102 BE11 0000 .....t..[.......
3309 00000E70: 6C6F 6763 6174 002F 3000 0000 0000 0000 logcat./0.......
3310 00000E80: BE11 0000 7800 0000 0100 0000 0000 0000 ....x...........
3311 00000E90: 6C6F 6764 2E72 6561 6465 722E 7065 7200 logd.reader.per.
3312 00000EA0: C611 0000 8200 0000 6AFA 0B00 6500 0102 ........j...e...
3313 00000EB0: C611 0000 6C6F 6763 6174 002F 3000 0000 ....logcat./0...
3314 00000EC0: 0000 0000 BE11 0000 7800 0000 0100 0000 ........x.......
3315 00000ED0: 0500 0000 7023 0800 5B00 0102 C611 0000 ....p#..[.......
3316 00000EE0: 6C6F 6764 2E72 6561 6465 722E 7065 7200 logd.reader.per.
3317 00000EF0: C611 0000 8200 0000 0001 0000 0000 0000 ................
3318 00000F00: 6C6F 6763 6174 002F 3000 0000 0000 0000 logcat./0.......
3319 00000F10: BE11 0000 7800 0000 AA6B 1100 3100 0101 ....x....k..1...
3320 00000F20: BE11 0000 08D4 FF74 CCFF FFFF 40C9 2900 .......t....@.).
3321 00000F30: AEFF FFFF 0044 8940 CBFF FFFF 2000 0000 .....D.@.... ...
3322 00000F40: FFFF FFFF 64EA 0000 2E00 0101 BE11 0000 ....d...........
3323 00000F50: 08D4 FF74 CCFF FFFF EABC 0000 6500 0102 ...t........e...
3324 00000F60: BE11 0000 6B77 6F72 6B65 722F 7531 363A ....kworker/u16:
3325 00000F70: 3130 0000 6001 0000 7800 0000 0100 0000 10..`...x.......
3326 00000F80: 0200 0000 48C3 0000 3700 0102 BE11 0000 ....H...7.......
3327 00000F90: 6001 0000 0000 0000 7C51 3800 AEFF FFFF `.......|Q8.....
3328 00000FA0: 0000 0000 0000 0000 90C4 0F00 5B00 0102 ............[...
3329 00000FB0: BE11 0000 6C6F 6763 6174 002F 3000 0000 ....logcat./0...
3330 00000FC0: 0000 0000 BE11 0000 7800 0000 0100 0000 ........x.......
3331 00000FD0: 0000 0000 6C6F 6764 2E72 6561 6465 722E ....logd.reader.
3332 00000FE0: 7065 7200 C611 0000 8200 0000 0000 0000 per.............
3333 00000FF0: 0000 0000 0000 0000 0000 0000 0000 0000 ................
3334 )",
3335 };
3336
3337 // b/204564312: some (mostly 4.19) kernels rarely emit an invalid page, where
3338 // the header says there's valid data, but the contents are a run of zeros
3339 // (which doesn't decode to valid events per the ring buffer ABI). Confirm that
3340 // the error is reported in the ftrace event bundle.
3341 TEST_F(CpuReaderParsePagePayloadTest, InvalidZeroPaddedPage) {
3342 const ExamplePage* test_case = &g_zero_padded;
3343 ProtoTranslationTable* table = GetTable(test_case->name);
3344 auto page = PageFromXxd(test_case->data);
3345
3346 // Don't need enabled events, as the test checks that we can walk the event
3347 // headers down to the end of the page.
3348 FtraceDataSourceConfig ds_config = EmptyConfig();
3349
3350 const uint8_t* parse_pos = page.get();
3351 std::optional<CpuReader::PageHeader> page_header =
3352 CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
3353
3354 const uint8_t* page_end = page.get() + base::GetSysPageSize();
3355 ASSERT_TRUE(page_header.has_value());
3356 EXPECT_FALSE(page_header->lost_events);
3357 EXPECT_LE(parse_pos + page_header->size, page_end);
3358
3359 FtraceParseStatus status = CpuReader::ParsePagePayload(
3360 parse_pos, &page_header.value(), table, &ds_config,
3361 CreateBundler(ds_config), &metadata_, &last_read_event_ts_);
3362
3363 EXPECT_EQ(0xff0u, page_header->size);
3364 EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_ABI_ZERO_DATA_LENGTH);
3365
3366 EXPECT_THAT(AllTracePackets(), IsEmpty());
3367 }
3368
3369 static ExamplePage g_four_byte_commit{
3370 "synthetic",
3371 R"(
3372 00000000: 105B DA5D C100 0000 0400 0000 0000 0000 .[.]............
3373 00000010: 0000 0000 0000 0000 0000 0000 0000 0000 ................
3374 )",
3375 };
3376
TEST_F(CpuReaderParsePagePayloadTest,InvalidHeaderLength)3377 TEST_F(CpuReaderParsePagePayloadTest, InvalidHeaderLength) {
3378 const ExamplePage* test_case = &g_four_byte_commit;
3379 ProtoTranslationTable* table = GetTable(test_case->name);
3380 auto page = PageFromXxd(test_case->data);
3381
3382 FtraceDataSourceConfig ds_config = EmptyConfig();
3383
3384 const uint8_t* parse_pos = page.get();
3385 std::optional<CpuReader::PageHeader> page_header =
3386 CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
3387
3388 const uint8_t* page_end = page.get() + base::GetSysPageSize();
3389 ASSERT_TRUE(page_header.has_value());
3390 EXPECT_FALSE(page_header->lost_events);
3391 EXPECT_LE(parse_pos + page_header->size, page_end);
3392
3393 FtraceParseStatus status = CpuReader::ParsePagePayload(
3394 parse_pos, &page_header.value(), table, &ds_config,
3395 CreateBundler(ds_config), &metadata_, &last_read_event_ts_);
3396
3397 EXPECT_EQ(4u, page_header->size);
3398 EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_ABI_SHORT_DATA_LENGTH);
3399
3400 EXPECT_THAT(AllTracePackets(), IsEmpty());
3401 }
3402
3403 // Kernel code:
3404 // trace_f2fs_truncate_partial_nodes(... nid = {1,2,3}, depth = 4, err = 0)
3405 //
3406 // After kernel commit 0b04d4c0542e("f2fs: Fix
3407 // f2fs_truncate_partial_nodes ftrace event")
3408 static ExamplePage g_f2fs_truncate_partial_nodes_new{
3409 "b281660544_new",
3410 R"(
3411 00000000: 1555 c3e4 cb07 0000 3c00 0000 0000 0000 .U......<.......
3412 00000010: 3e33 0b87 2700 0000 0c00 0000 7d02 0000 >3..'.......}...
3413 00000020: c638 0000 3900 e00f 0000 0000 b165 0000 .8..9........e..
3414 00000030: 0000 0000 0100 0000 0200 0000 0300 0000 ................
3415 00000040: 0400 0000 0000 0000 0000 0000 0000 0000 ................
3416 )",
3417 };
3418
TEST_F(CpuReaderParsePagePayloadTest,F2fsTruncatePartialNodesNew)3419 TEST_F(CpuReaderParsePagePayloadTest, F2fsTruncatePartialNodesNew) {
3420 const ExamplePage* test_case = &g_f2fs_truncate_partial_nodes_new;
3421
3422 ProtoTranslationTable* table = GetTable(test_case->name);
3423 auto page = PageFromXxd(test_case->data);
3424
3425 FtraceDataSourceConfig ds_config = EmptyConfig();
3426 ds_config.event_filter.AddEnabledEvent(table->EventToFtraceId(
3427 GroupAndName("f2fs", "f2fs_truncate_partial_nodes")));
3428
3429 const uint8_t* parse_pos = page.get();
3430 std::optional<CpuReader::PageHeader> page_header =
3431 CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
3432
3433 const uint8_t* page_end = page.get() + base::GetSysPageSize();
3434 ASSERT_TRUE(page_header.has_value());
3435 EXPECT_FALSE(page_header->lost_events);
3436 EXPECT_LE(parse_pos + page_header->size, page_end);
3437
3438 FtraceParseStatus status = CpuReader::ParsePagePayload(
3439 parse_pos, &page_header.value(), table, &ds_config,
3440 CreateBundler(ds_config), &metadata_, &last_read_event_ts_);
3441
3442 EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_OK);
3443
3444 auto bundle = GetBundle();
3445 ASSERT_THAT(bundle.event(), SizeIs(1));
3446 auto& event = bundle.event()[0];
3447 EXPECT_EQ(event.f2fs_truncate_partial_nodes().dev(), 65081u);
3448 EXPECT_EQ(event.f2fs_truncate_partial_nodes().ino(), 26033u);
3449 // This field is disabled in ftrace_proto_gen.cc
3450 EXPECT_FALSE(event.f2fs_truncate_partial_nodes().has_nid());
3451 EXPECT_EQ(event.f2fs_truncate_partial_nodes().depth(), 4);
3452 EXPECT_EQ(event.f2fs_truncate_partial_nodes().err(), 0);
3453 }
3454
3455 // Kernel code:
3456 // trace_f2fs_truncate_partial_nodes(... nid = {1,2,3}, depth = 4, err = 0)
3457 //
3458 // Before kernel commit 0b04d4c0542e("f2fs: Fix
3459 // f2fs_truncate_partial_nodes ftrace event")
3460 static ExamplePage g_f2fs_truncate_partial_nodes_old{
3461 "b281660544_old",
3462 R"(
3463 00000000: 8f90 aa0d 9e00 0000 3c00 0000 0000 0000 ........<.......
3464 00000010: 3e97 0295 0e01 0000 0c00 0000 7d02 0000 >...........}...
3465 00000020: 8021 0000 3900 e00f 0000 0000 0d66 0000 .!..9........f..
3466 00000030: 0000 0000 0100 0000 0200 0000 0300 0000 ................
3467 00000040: 0400 0000 0000 0000 0000 0000 0000 0000 ................
3468 )",
3469 };
3470
TEST_F(CpuReaderParsePagePayloadTest,F2fsTruncatePartialNodesOld)3471 TEST_F(CpuReaderParsePagePayloadTest, F2fsTruncatePartialNodesOld) {
3472 const ExamplePage* test_case = &g_f2fs_truncate_partial_nodes_old;
3473
3474 ProtoTranslationTable* table = GetTable(test_case->name);
3475 auto page = PageFromXxd(test_case->data);
3476
3477 FtraceDataSourceConfig ds_config = EmptyConfig();
3478 auto id = table->EventToFtraceId(
3479 GroupAndName("f2fs", "f2fs_truncate_partial_nodes"));
3480 PERFETTO_LOG("Enabling: %zu", id);
3481 ds_config.event_filter.AddEnabledEvent(id);
3482
3483 const uint8_t* parse_pos = page.get();
3484 std::optional<CpuReader::PageHeader> page_header =
3485 CpuReader::ParsePageHeader(&parse_pos, table->page_header_size_len());
3486
3487 const uint8_t* page_end = page.get() + base::GetSysPageSize();
3488 ASSERT_TRUE(page_header.has_value());
3489 EXPECT_FALSE(page_header->lost_events);
3490 EXPECT_LE(parse_pos + page_header->size, page_end);
3491
3492 FtraceParseStatus status = CpuReader::ParsePagePayload(
3493 parse_pos, &page_header.value(), table, &ds_config,
3494 CreateBundler(ds_config), &metadata_, &last_read_event_ts_);
3495
3496 EXPECT_EQ(status, FtraceParseStatus::FTRACE_STATUS_OK);
3497
3498 auto bundle = GetBundle();
3499 ASSERT_THAT(bundle.event(), SizeIs(1));
3500 auto& event = bundle.event()[0];
3501 EXPECT_EQ(event.f2fs_truncate_partial_nodes().dev(), 65081u);
3502 EXPECT_EQ(event.f2fs_truncate_partial_nodes().ino(), 26125u);
3503 // This field is disabled in ftrace_proto_gen.cc
3504 EXPECT_FALSE(event.f2fs_truncate_partial_nodes().has_nid());
3505 // Due to a kernel bug, nid[1] is parsed as depth.
3506 EXPECT_EQ(event.f2fs_truncate_partial_nodes().depth(), 2);
3507 // Due to a kernel bug, nid[2] is parsed as err.
3508 EXPECT_EQ(event.f2fs_truncate_partial_nodes().err(), 3);
3509 }
3510
3511 // one print
3512 char g_last_ts_test_page_0[] = R"(
3513 00000000: cd79 fb3a 2fa4 0400 2c00 0000 0000 0000 .y.:/...,.......
3514 00000010: 7eb6 e5eb 8f11 0000 0800 0000 0500 0000 ~...............
3515 00000020: 1e83 1400 42ab e0af ffff ffff 6669 7273 ....B.......firs
3516 00000030: 745f 7072 696e 740a 0000 0000 0000 0000 t_print.........
3517 )";
3518
3519 // one print
3520 char g_last_ts_test_page_1[] = R"(
3521 00000000: 3c11 d579 99a5 0400 2c00 0000 0000 0000 <..y....,.......
3522 00000010: 3ed1 6315 3701 0000 0800 0000 0500 0000 >.c.7...........
3523 00000020: 9e8c 1400 42ab e0af ffff ffff 7365 636f ....B.......seco
3524 00000030: 6e64 5f70 7269 6e74 0a00 0000 0000 0000 nd_print........
3525 )";
3526
3527 // data loss marker ("since last read") + multiple sched_switch + one print
3528 char g_last_ts_test_page_2[] = R"(
3529 00000000: 8ac6 cb70 a8a5 0400 4c02 0080 ffff ffff ...p....L.......
3530 00000010: 1000 0000 4701 0102 01b1 0f00 636f 6465 ....G.......code
3531 00000020: 0000 0000 0000 0000 0000 0000 01b1 0f00 ................
3532 00000030: 7800 0000 0100 0000 0000 0000 7377 6170 x...........swap
3533 00000040: 7065 722f 3000 0000 0000 0000 0000 0000 per/0...........
3534 00000050: 7800 0000 b0e3 f602 4701 0102 0000 0000 x.......G.......
3535 00000060: 7377 6170 7065 722f 3000 0000 0000 0000 swapper/0.......
3536 00000070: 0000 0000 7800 0000 0000 0000 0000 0000 ....x...........
3537 00000080: 6b77 6f72 6b65 722f 303a 3500 0000 0000 kworker/0:5.....
3538 00000090: ac85 1400 7800 0000 1002 0300 4701 0102 ....x.......G...
3539 000000a0: ac85 1400 6b77 6f72 6b65 722f 303a 3500 ....kworker/0:5.
3540 000000b0: 0000 0000 ac85 1400 7800 0000 8000 0000 ........x.......
3541 000000c0: 0000 0000 7377 6170 7065 722f 3000 0000 ....swapper/0...
3542 000000d0: 0000 0000 0000 0000 7800 0000 f086 7106 ........x.....q.
3543 000000e0: 4701 0102 0000 0000 7377 6170 7065 722f G.......swapper/
3544 000000f0: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
3545 00000100: 0000 0000 0000 0000 6f62 6e6f 2d64 6573 ........obno-des
3546 00000110: 6b74 6f70 2d6e 6f00 d513 0000 7800 0000 ktop-no.....x...
3547 00000120: 3013 1000 4701 0102 d513 0000 6f62 6e6f 0...G.......obno
3548 00000130: 2d64 6573 6b74 6f70 2d6e 6f00 d513 0000 -desktop-no.....
3549 00000140: 7800 0000 0100 0000 0000 0000 7377 6170 x...........swap
3550 00000150: 7065 722f 3000 0000 0000 0000 0000 0000 per/0...........
3551 00000160: 7800 0000 10b0 2703 4701 0102 0000 0000 x.....'.G.......
3552 00000170: 7377 6170 7065 722f 3000 0000 0000 0000 swapper/0.......
3553 00000180: 0000 0000 7800 0000 0000 0000 0000 0000 ....x...........
3554 00000190: 6b77 6f72 6b65 722f 303a 3500 0000 0000 kworker/0:5.....
3555 000001a0: ac85 1400 7800 0000 70e7 0200 4701 0102 ....x...p...G...
3556 000001b0: ac85 1400 6b77 6f72 6b65 722f 303a 3500 ....kworker/0:5.
3557 000001c0: 0000 0000 ac85 1400 7800 0000 8000 0000 ........x.......
3558 000001d0: 0000 0000 6b73 6f66 7469 7271 642f 3000 ....ksoftirqd/0.
3559 000001e0: 0000 0000 0f00 0000 7800 0000 10a4 0200 ........x.......
3560 000001f0: 4701 0102 0f00 0000 6b73 6f66 7469 7271 G.......ksoftirq
3561 00000200: 642f 3000 0000 0000 0f00 0000 7800 0000 d/0.........x...
3562 00000210: 0100 0000 0000 0000 7377 6170 7065 722f ........swapper/
3563 00000220: 3000 0000 0000 0000 0000 0000 7800 0000 0...........x...
3564 00000230: fef2 0a4d 7500 0000 0800 0000 0500 0000 ...Mu...........
3565 00000240: 1a8d 1400 42ab e0af ffff ffff 7468 6972 ....B.......thir
3566 00000250: 645f 7072 696e 740a 0000 0000 0000 0000 d_print.........
3567 )";
3568
3569 // Tests that |last_read_event_timestamp| is correctly updated in cases where a
3570 // single ProcessPagesForDataSource call produces multiple ftrace bundle packets
3571 // (due to splitting on data loss markers).
TEST(CpuReaderTest,LastReadEventTimestampWithSplitBundles)3572 TEST(CpuReaderTest, LastReadEventTimestampWithSplitBundles) {
3573 // build test buffer with 3 pages
3574 ProtoTranslationTable* table = GetTable("synthetic");
3575 std::vector<std::unique_ptr<uint8_t[]>> test_pages;
3576 test_pages.emplace_back(PageFromXxd(g_last_ts_test_page_0));
3577 test_pages.emplace_back(PageFromXxd(g_last_ts_test_page_1));
3578 test_pages.emplace_back(PageFromXxd(g_last_ts_test_page_2));
3579 size_t num_pages = test_pages.size();
3580 size_t page_sz = base::GetSysPageSize();
3581 auto buf = std::make_unique<uint8_t[]>(page_sz * num_pages);
3582 for (size_t i = 0; i < num_pages; i++) {
3583 void* dest = buf.get() + (i * page_sz);
3584 memcpy(dest, static_cast<const void*>(test_pages[i].get()), page_sz);
3585 }
3586
3587 // build cfg requesting ftrace/print
3588 auto compact_sched_buf = std::make_unique<CompactSchedBuffer>();
3589 FtraceMetadata metadata{};
3590 FtraceDataSourceConfig ftrace_cfg = EmptyConfig();
3591 ftrace_cfg.event_filter.AddEnabledEvent(
3592 table->EventToFtraceId(GroupAndName("ftrace", "print")));
3593
3594 // invoke ProcessPagesForDataSource
3595 TraceWriterForTesting trace_writer;
3596 base::FlatSet<protos::pbzero::FtraceParseStatus> parse_errors;
3597 uint64_t last_read_event_ts = 0;
3598 bool success = CpuReader::ProcessPagesForDataSource(
3599 &trace_writer, &metadata, /*cpu=*/0, &ftrace_cfg, &parse_errors,
3600 &last_read_event_ts, buf.get(), num_pages, compact_sched_buf.get(), table,
3601 /*symbolizer=*/nullptr,
3602 /*ftrace_clock_snapshot=*/nullptr,
3603 protos::pbzero::FTRACE_CLOCK_UNSPECIFIED);
3604
3605 EXPECT_TRUE(success);
3606
3607 // We've read three pages, one print event on each. There is a data loss
3608 // marker on the third page, indicating that the kernel overwrote events
3609 // between 2nd and 3rd page (imagine our daemon getting cpu starved between
3610 // those reads).
3611 //
3612 // Therefore we expect two bundles, as we start a new one whenever we
3613 // encounter data loss (to set the |lost_events| field in the bundle proto).
3614 //
3615 // In terms of |last_read_event_timestamp|, the first bundle will emit zero
3616 // since that's our initial input. The second bundle needs to emit the
3617 // timestamp of the last event in the first bundle.
3618 auto packets = trace_writer.GetAllTracePackets();
3619 ASSERT_EQ(2u, packets.size());
3620
3621 // 2 prints
3622 auto const& first_bundle = packets[0].ftrace_events();
3623 EXPECT_FALSE(first_bundle.lost_events());
3624 ASSERT_EQ(2u, first_bundle.event().size());
3625 EXPECT_TRUE(first_bundle.has_last_read_event_timestamp());
3626 EXPECT_EQ(0u, first_bundle.last_read_event_timestamp());
3627
3628 const uint64_t kSecondPrintTs = 1308020252356549ULL;
3629 EXPECT_EQ(kSecondPrintTs, first_bundle.event()[1].timestamp());
3630 EXPECT_EQ(0u, first_bundle.last_read_event_timestamp());
3631
3632 // 1 print + lost_events + updated last_read_event_timestamp
3633 auto const& second_bundle = packets[1].ftrace_events();
3634 EXPECT_TRUE(second_bundle.lost_events());
3635 EXPECT_EQ(1u, second_bundle.event().size());
3636 EXPECT_EQ(kSecondPrintTs, second_bundle.last_read_event_timestamp());
3637 }
3638
3639 } // namespace
3640 } // namespace perfetto
3641