1 /*
2 * Copyright (C) 2016 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 <gtest/gtest.h>
18
19 #include <android-base/file.h>
20 #include <android-base/strings.h>
21
22 #include <memory>
23
24 #include "command.h"
25 #include "get_test_data.h"
26 #include "record.h"
27 #include "record_file.h"
28 #include "test_util.h"
29
KmemCmd()30 static std::unique_ptr<Command> KmemCmd() {
31 return CreateCommandInstance("kmem");
32 }
33
34 struct ReportResult {
35 bool success;
36 std::string content;
37 std::vector<std::string> lines;
38 };
39
KmemReportRawFile(const std::string & perf_data,const std::vector<std::string> & additional_args,ReportResult * result)40 static void KmemReportRawFile(const std::string& perf_data,
41 const std::vector<std::string>& additional_args,
42 ReportResult* result) {
43 result->success = false;
44 TemporaryFile tmp_file;
45 std::vector<std::string> args = {"report", "-i", perf_data, "-o",
46 tmp_file.path};
47 args.insert(args.end(), additional_args.begin(), additional_args.end());
48 ASSERT_TRUE(KmemCmd()->Run(args));
49 ASSERT_TRUE(android::base::ReadFileToString(tmp_file.path, &result->content));
50 ASSERT_TRUE(!result->content.empty());
51 std::vector<std::string> raw_lines =
52 android::base::Split(result->content, "\n");
53 result->lines.clear();
54 for (const auto& line : raw_lines) {
55 std::string s = android::base::Trim(line);
56 if (!s.empty()) {
57 result->lines.push_back(s);
58 }
59 }
60 ASSERT_GE(result->lines.size(), 2u);
61 result->success = true;
62 }
63
KmemReportFile(const std::string & perf_data,const std::vector<std::string> & additional_args,ReportResult * result)64 static void KmemReportFile(const std::string& perf_data,
65 const std::vector<std::string>& additional_args,
66 ReportResult* result) {
67 KmemReportRawFile(GetTestData(perf_data), additional_args, result);
68 }
69
70 #if defined(__linux__)
71 #include "environment.h"
72
RunKmemRecordCmd(std::vector<std::string> v,const char * output_file=nullptr)73 static bool RunKmemRecordCmd(std::vector<std::string> v,
74 const char* output_file = nullptr) {
75 std::unique_ptr<TemporaryFile> tmpfile;
76 std::string out_file;
77 if (output_file != nullptr) {
78 out_file = output_file;
79 } else {
80 tmpfile.reset(new TemporaryFile);
81 out_file = tmpfile->path;
82 }
83 v.insert(v.begin(), "record");
84 v.insert(v.end(), {"-o", out_file, "sleep", SLEEP_SEC});
85 return KmemCmd()->Run(v);
86 }
87
TEST(kmem_cmd,record_slab)88 TEST(kmem_cmd, record_slab) {
89 TEST_IN_ROOT(ASSERT_TRUE(RunKmemRecordCmd({"--slab"})));
90 }
91
TEST(kmem_cmd,record_fp_callchain_sampling)92 TEST(kmem_cmd, record_fp_callchain_sampling) {
93 TEST_IN_ROOT(ASSERT_TRUE(RunKmemRecordCmd({"--slab", "-g"})));
94 TEST_IN_ROOT(ASSERT_TRUE(RunKmemRecordCmd({"--slab", "--call-graph", "fp"})));
95 }
96
TEST(kmem_cmd,record_and_report)97 TEST(kmem_cmd, record_and_report) {
98 TemporaryFile tmp_file;
99 TEST_IN_ROOT({
100 ASSERT_TRUE(RunKmemRecordCmd({"--slab"}, tmp_file.path));
101 ReportResult result;
102 KmemReportRawFile(tmp_file.path, {}, &result);
103 ASSERT_TRUE(result.success);
104 });
105 }
106
TEST(kmem_cmd,record_and_report_callgraph)107 TEST(kmem_cmd, record_and_report_callgraph) {
108 TemporaryFile tmp_file;
109 TEST_IN_ROOT({
110 ASSERT_TRUE(RunKmemRecordCmd({"--slab", "-g"}, tmp_file.path));
111 ReportResult result;
112 KmemReportRawFile(tmp_file.path, {"-g"}, &result);
113 ASSERT_TRUE(result.success);
114 });
115 }
116
117 #endif
118
TEST(kmem_cmd,report)119 TEST(kmem_cmd, report) {
120 ReportResult result;
121 KmemReportFile(PERF_DATA_WITH_KMEM_SLAB_CALLGRAPH_RECORD, {}, &result);
122 ASSERT_TRUE(result.success);
123 ASSERT_NE(result.content.find("kmem:kmalloc"), std::string::npos);
124 ASSERT_NE(result.content.find("__alloc_skb"), std::string::npos);
125 }
126
TEST(kmem_cmd,report_all_sort_options)127 TEST(kmem_cmd, report_all_sort_options) {
128 ReportResult result;
129 KmemReportFile(
130 PERF_DATA_WITH_KMEM_SLAB_CALLGRAPH_RECORD,
131 {"--slab-sort",
132 "hit,caller,ptr,bytes_req,bytes_alloc,fragment,gfp_flags,pingpong"},
133 &result);
134 ASSERT_TRUE(result.success);
135 ASSERT_NE(result.content.find("Ptr"), std::string::npos);
136 ASSERT_NE(result.content.find("GfpFlags"), std::string::npos);
137 }
138
TEST(kmem_cmd,report_callgraph)139 TEST(kmem_cmd, report_callgraph) {
140 ReportResult result;
141 KmemReportFile(PERF_DATA_WITH_KMEM_SLAB_CALLGRAPH_RECORD, {"-g"}, &result);
142 ASSERT_TRUE(result.success);
143 ASSERT_NE(result.content.find("kmem:kmalloc"), std::string::npos);
144 ASSERT_NE(result.content.find("__alloc_skb"), std::string::npos);
145 ASSERT_NE(result.content.find("system_call_fastpath"), std::string::npos);
146 }
147