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1#!/usr/bin/env python3
2# SPDX-License-Identifier: GPL-2.0
3#
4# A thin wrapper on top of the KUnit Kernel
5#
6# Copyright (C) 2019, Google LLC.
7# Author: Felix Guo <felixguoxiuping@gmail.com>
8# Author: Brendan Higgins <brendanhiggins@google.com>
9
10import argparse
11import sys
12import os
13import time
14
15assert sys.version_info >= (3, 7), "Python version is too old"
16
17from collections import namedtuple
18from enum import Enum, auto
19
20import kunit_config
21import kunit_json
22import kunit_kernel
23import kunit_parser
24
25KunitResult = namedtuple('KunitResult', ['status','result','elapsed_time'])
26
27KunitConfigRequest = namedtuple('KunitConfigRequest',
28 ['build_dir', 'make_options'])
29KunitBuildRequest = namedtuple('KunitBuildRequest',
30 ['jobs', 'build_dir', 'alltests',
31 'make_options'])
32KunitExecRequest = namedtuple('KunitExecRequest',
33 ['timeout', 'build_dir', 'alltests', 'filter_glob'])
34KunitParseRequest = namedtuple('KunitParseRequest',
35 ['raw_output', 'input_data', 'build_dir', 'json'])
36KunitRequest = namedtuple('KunitRequest', ['raw_output','timeout', 'jobs',
37 'build_dir', 'alltests', 'filter_glob',
38 'json', 'make_options'])
39
40KernelDirectoryPath = sys.argv[0].split('tools/testing/kunit/')[0]
41
42class KunitStatus(Enum):
43 SUCCESS = auto()
44 CONFIG_FAILURE = auto()
45 BUILD_FAILURE = auto()
46 TEST_FAILURE = auto()
47
48def get_kernel_root_path() -> str:
49 path = sys.argv[0] if not __file__ else __file__
50 parts = os.path.realpath(path).split('tools/testing/kunit')
51 if len(parts) != 2:
52 sys.exit(1)
53 return parts[0]
54
55def config_tests(linux: kunit_kernel.LinuxSourceTree,
56 request: KunitConfigRequest) -> KunitResult:
57 kunit_parser.print_with_timestamp('Configuring KUnit Kernel ...')
58
59 config_start = time.time()
60 success = linux.build_reconfig(request.build_dir, request.make_options)
61 config_end = time.time()
62 if not success:
63 return KunitResult(KunitStatus.CONFIG_FAILURE,
64 'could not configure kernel',
65 config_end - config_start)
66 return KunitResult(KunitStatus.SUCCESS,
67 'configured kernel successfully',
68 config_end - config_start)
69
70def build_tests(linux: kunit_kernel.LinuxSourceTree,
71 request: KunitBuildRequest) -> KunitResult:
72 kunit_parser.print_with_timestamp('Building KUnit Kernel ...')
73
74 build_start = time.time()
75 success = linux.build_kernel(request.alltests,
76 request.jobs,
77 request.build_dir,
78 request.make_options)
79 build_end = time.time()
80 if not success:
81 return KunitResult(KunitStatus.BUILD_FAILURE,
82 'could not build kernel',
83 build_end - build_start)
84 if not success:
85 return KunitResult(KunitStatus.BUILD_FAILURE,
86 'could not build kernel',
87 build_end - build_start)
88 return KunitResult(KunitStatus.SUCCESS,
89 'built kernel successfully',
90 build_end - build_start)
91
92def exec_tests(linux: kunit_kernel.LinuxSourceTree,
93 request: KunitExecRequest) -> KunitResult:
94 kunit_parser.print_with_timestamp('Starting KUnit Kernel ...')
95 test_start = time.time()
96 result = linux.run_kernel(
97 timeout=None if request.alltests else request.timeout,
98 filter_glob=request.filter_glob,
99 build_dir=request.build_dir)
100
101 test_end = time.time()
102
103 return KunitResult(KunitStatus.SUCCESS,
104 result,
105 test_end - test_start)
106
107def parse_tests(request: KunitParseRequest) -> KunitResult:
108 parse_start = time.time()
109
110 test_result = kunit_parser.TestResult(kunit_parser.TestStatus.SUCCESS,
111 [],
112 'Tests not Parsed.')
113
114 if request.raw_output:
115 kunit_parser.raw_output(request.input_data)
116 else:
117 test_result = kunit_parser.parse_run_tests(request.input_data)
118 parse_end = time.time()
119
120 if request.json:
121 json_obj = kunit_json.get_json_result(
122 test_result=test_result,
123 def_config='kunit_defconfig',
124 build_dir=request.build_dir,
125 json_path=request.json)
126 if request.json == 'stdout':
127 print(json_obj)
128
129 if test_result.status != kunit_parser.TestStatus.SUCCESS:
130 return KunitResult(KunitStatus.TEST_FAILURE, test_result,
131 parse_end - parse_start)
132
133 return KunitResult(KunitStatus.SUCCESS, test_result,
134 parse_end - parse_start)
135
136
137def run_tests(linux: kunit_kernel.LinuxSourceTree,
138 request: KunitRequest) -> KunitResult:
139 run_start = time.time()
140
141 config_request = KunitConfigRequest(request.build_dir,
142 request.make_options)
143 config_result = config_tests(linux, config_request)
144 if config_result.status != KunitStatus.SUCCESS:
145 return config_result
146
147 build_request = KunitBuildRequest(request.jobs, request.build_dir,
148 request.alltests,
149 request.make_options)
150 build_result = build_tests(linux, build_request)
151 if build_result.status != KunitStatus.SUCCESS:
152 return build_result
153
154 exec_request = KunitExecRequest(request.timeout, request.build_dir,
155 request.alltests, request.filter_glob)
156 exec_result = exec_tests(linux, exec_request)
157 if exec_result.status != KunitStatus.SUCCESS:
158 return exec_result
159
160 parse_request = KunitParseRequest(request.raw_output,
161 exec_result.result,
162 request.build_dir,
163 request.json)
164 parse_result = parse_tests(parse_request)
165
166 run_end = time.time()
167
168 kunit_parser.print_with_timestamp((
169 'Elapsed time: %.3fs total, %.3fs configuring, %.3fs ' +
170 'building, %.3fs running\n') % (
171 run_end - run_start,
172 config_result.elapsed_time,
173 build_result.elapsed_time,
174 exec_result.elapsed_time))
175 return parse_result
176
177def add_common_opts(parser) -> None:
178 parser.add_argument('--build_dir',
179 help='As in the make command, it specifies the build '
180 'directory.',
181 type=str, default='.kunit', metavar='build_dir')
182 parser.add_argument('--make_options',
183 help='X=Y make option, can be repeated.',
184 action='append')
185 parser.add_argument('--alltests',
186 help='Run all KUnit tests through allyesconfig',
187 action='store_true')
188 parser.add_argument('--kunitconfig',
189 help='Path to Kconfig fragment that enables KUnit tests.'
190 ' If given a directory, (e.g. lib/kunit), "/.kunitconfig" '
191 'will get automatically appended.',
192 metavar='kunitconfig')
193
194 parser.add_argument('--arch',
195 help=('Specifies the architecture to run tests under. '
196 'The architecture specified here must match the '
197 'string passed to the ARCH make param, '
198 'e.g. i386, x86_64, arm, um, etc. Non-UML '
199 'architectures run on QEMU.'),
200 type=str, default='um', metavar='arch')
201
202 parser.add_argument('--cross_compile',
203 help=('Sets make\'s CROSS_COMPILE variable; it should '
204 'be set to a toolchain path prefix (the prefix '
205 'of gcc and other tools in your toolchain, for '
206 'example `sparc64-linux-gnu-` if you have the '
207 'sparc toolchain installed on your system, or '
208 '`$HOME/toolchains/microblaze/gcc-9.2.0-nolibc/microblaze-linux/bin/microblaze-linux-` '
209 'if you have downloaded the microblaze toolchain '
210 'from the 0-day website to a directory in your '
211 'home directory called `toolchains`).'),
212 metavar='cross_compile')
213
214 parser.add_argument('--qemu_config',
215 help=('Takes a path to a path to a file containing '
216 'a QemuArchParams object.'),
217 type=str, metavar='qemu_config')
218
219def add_build_opts(parser) -> None:
220 parser.add_argument('--jobs',
221 help='As in the make command, "Specifies the number of '
222 'jobs (commands) to run simultaneously."',
223 type=int, default=8, metavar='jobs')
224
225def add_exec_opts(parser) -> None:
226 parser.add_argument('--timeout',
227 help='maximum number of seconds to allow for all tests '
228 'to run. This does not include time taken to build the '
229 'tests.',
230 type=int,
231 default=300,
232 metavar='timeout')
233 parser.add_argument('filter_glob',
234 help='maximum number of seconds to allow for all tests '
235 'to run. This does not include time taken to build the '
236 'tests.',
237 type=str,
238 nargs='?',
239 default='',
240 metavar='filter_glob')
241
242def add_parse_opts(parser) -> None:
243 parser.add_argument('--raw_output', help='don\'t format output from kernel',
244 action='store_true')
245 parser.add_argument('--json',
246 nargs='?',
247 help='Stores test results in a JSON, and either '
248 'prints to stdout or saves to file if a '
249 'filename is specified',
250 type=str, const='stdout', default=None)
251
252def main(argv, linux=None):
253 parser = argparse.ArgumentParser(
254 description='Helps writing and running KUnit tests.')
255 subparser = parser.add_subparsers(dest='subcommand')
256
257 # The 'run' command will config, build, exec, and parse in one go.
258 run_parser = subparser.add_parser('run', help='Runs KUnit tests.')
259 add_common_opts(run_parser)
260 add_build_opts(run_parser)
261 add_exec_opts(run_parser)
262 add_parse_opts(run_parser)
263
264 config_parser = subparser.add_parser('config',
265 help='Ensures that .config contains all of '
266 'the options in .kunitconfig')
267 add_common_opts(config_parser)
268
269 build_parser = subparser.add_parser('build', help='Builds a kernel with KUnit tests')
270 add_common_opts(build_parser)
271 add_build_opts(build_parser)
272
273 exec_parser = subparser.add_parser('exec', help='Run a kernel with KUnit tests')
274 add_common_opts(exec_parser)
275 add_exec_opts(exec_parser)
276 add_parse_opts(exec_parser)
277
278 # The 'parse' option is special, as it doesn't need the kernel source
279 # (therefore there is no need for a build_dir, hence no add_common_opts)
280 # and the '--file' argument is not relevant to 'run', so isn't in
281 # add_parse_opts()
282 parse_parser = subparser.add_parser('parse',
283 help='Parses KUnit results from a file, '
284 'and parses formatted results.')
285 add_parse_opts(parse_parser)
286 parse_parser.add_argument('file',
287 help='Specifies the file to read results from.',
288 type=str, nargs='?', metavar='input_file')
289
290 cli_args = parser.parse_args(argv)
291
292 if get_kernel_root_path():
293 os.chdir(get_kernel_root_path())
294
295 if cli_args.subcommand == 'run':
296 if not os.path.exists(cli_args.build_dir):
297 os.mkdir(cli_args.build_dir)
298
299 if not linux:
300 linux = kunit_kernel.LinuxSourceTree(cli_args.build_dir,
301 kunitconfig_path=cli_args.kunitconfig,
302 arch=cli_args.arch,
303 cross_compile=cli_args.cross_compile,
304 qemu_config_path=cli_args.qemu_config)
305
306 request = KunitRequest(cli_args.raw_output,
307 cli_args.timeout,
308 cli_args.jobs,
309 cli_args.build_dir,
310 cli_args.alltests,
311 cli_args.filter_glob,
312 cli_args.json,
313 cli_args.make_options)
314 result = run_tests(linux, request)
315 if result.status != KunitStatus.SUCCESS:
316 sys.exit(1)
317 elif cli_args.subcommand == 'config':
318 if cli_args.build_dir and (
319 not os.path.exists(cli_args.build_dir)):
320 os.mkdir(cli_args.build_dir)
321
322 if not linux:
323 linux = kunit_kernel.LinuxSourceTree(cli_args.build_dir,
324 kunitconfig_path=cli_args.kunitconfig,
325 arch=cli_args.arch,
326 cross_compile=cli_args.cross_compile,
327 qemu_config_path=cli_args.qemu_config)
328
329 request = KunitConfigRequest(cli_args.build_dir,
330 cli_args.make_options)
331 result = config_tests(linux, request)
332 kunit_parser.print_with_timestamp((
333 'Elapsed time: %.3fs\n') % (
334 result.elapsed_time))
335 if result.status != KunitStatus.SUCCESS:
336 sys.exit(1)
337 elif cli_args.subcommand == 'build':
338 if not linux:
339 linux = kunit_kernel.LinuxSourceTree(cli_args.build_dir,
340 kunitconfig_path=cli_args.kunitconfig,
341 arch=cli_args.arch,
342 cross_compile=cli_args.cross_compile,
343 qemu_config_path=cli_args.qemu_config)
344
345 request = KunitBuildRequest(cli_args.jobs,
346 cli_args.build_dir,
347 cli_args.alltests,
348 cli_args.make_options)
349 result = build_tests(linux, request)
350 kunit_parser.print_with_timestamp((
351 'Elapsed time: %.3fs\n') % (
352 result.elapsed_time))
353 if result.status != KunitStatus.SUCCESS:
354 sys.exit(1)
355 elif cli_args.subcommand == 'exec':
356 if not linux:
357 linux = kunit_kernel.LinuxSourceTree(cli_args.build_dir,
358 kunitconfig_path=cli_args.kunitconfig,
359 arch=cli_args.arch,
360 cross_compile=cli_args.cross_compile,
361 qemu_config_path=cli_args.qemu_config)
362
363 exec_request = KunitExecRequest(cli_args.timeout,
364 cli_args.build_dir,
365 cli_args.alltests,
366 cli_args.filter_glob)
367 exec_result = exec_tests(linux, exec_request)
368 parse_request = KunitParseRequest(cli_args.raw_output,
369 exec_result.result,
370 cli_args.build_dir,
371 cli_args.json)
372 result = parse_tests(parse_request)
373 kunit_parser.print_with_timestamp((
374 'Elapsed time: %.3fs\n') % (
375 exec_result.elapsed_time))
376 if result.status != KunitStatus.SUCCESS:
377 sys.exit(1)
378 elif cli_args.subcommand == 'parse':
379 if cli_args.file == None:
380 kunit_output = sys.stdin
381 else:
382 with open(cli_args.file, 'r') as f:
383 kunit_output = f.read().splitlines()
384 request = KunitParseRequest(cli_args.raw_output,
385 kunit_output,
386 None,
387 cli_args.json)
388 result = parse_tests(request)
389 if result.status != KunitStatus.SUCCESS:
390 sys.exit(1)
391 else:
392 parser.print_help()
393
394if __name__ == '__main__':
395 main(sys.argv[1:])