shuah shuah@kernel.org wrote:

On 2/28/20 6:53 PM, Nathan Chancellor wrote:

...

On Wed, Feb 26, 2020 at 10:31:34PM -0800, 'Greg Thelen' via Clang Built Linux wrote:

...

The kunit.py utility builds an ARCH=um kernel and then runs it. Add optional --make_options flag to kunit.py allowing for the operator to specify extra build options.

This allows use of the clang compiler for kunit: tools/testing/kunit/kunit.py run --defconfig \ --make_options CC=clang --make_options HOSTCC=clang

Signed-off-by: Greg Thelen gthelen@google.com

Reviewed-by: Nathan Chancellor natechancellor@gmail.com

Please rebase on Linux 5.6-rc5 and resend. I tried applying on Linux 5.6-rc1 as well as 5.6-rc5 and both fail.

thanks, -- Shuah

Rebased onto v5.6-rc5 below:

From 0517b2c8b481535fb52bd86e94be1fec9aaeead7 Mon Sep 17 00:00:00 2001

From: Greg Thelen gthelen@google.com Date: Wed, 26 Feb 2020 22:31:34 -0800 Subject: [PATCH v2] kunit: add --make_options

The kunit.py utility builds an ARCH=um kernel and then runs it. Add optional --make_options flag to kunit.py allowing for the operator to specify extra build options.

This allows use of the clang compiler for kunit: tools/testing/kunit/kunit.py run --defconfig \ --make_options CC=clang --make_options HOSTCC=clang

Signed-off-by: Greg Thelen gthelen@google.com --- tools/testing/kunit/kunit.py | 15 +++++++++++---- tools/testing/kunit/kunit_kernel.py | 24 ++++++++++++++---------- 2 files changed, 25 insertions(+), 14 deletions(-)

diff --git a/tools/testing/kunit/kunit.py b/tools/testing/kunit/kunit.py index 180ad1e1b04f..1aa4d14dc28d 100755 --- a/tools/testing/kunit/kunit.py +++ b/tools/testing/kunit/kunit.py @@ -22,7 +22,9 @@ import kunit_parser

KunitResult = namedtuple('KunitResult', ['status','result'])

-KunitRequest = namedtuple('KunitRequest', ['raw_output','timeout', 'jobs', 'build_dir', 'defconfig']) +KunitRequest = namedtuple('KunitRequest', ['raw_output', 'timeout', 'jobs', + 'build_dir', 'defconfig', + 'make_options'])

KernelDirectoryPath = sys.argv[0].split('tools/testing/kunit/')[0]

@@ -47,7 +49,7 @@ def get_kernel_root_path(): def run_tests(linux: kunit_kernel.LinuxSourceTree, request: KunitRequest) -> KunitResult: config_start = time.time() - success = linux.build_reconfig(request.build_dir) + success = linux.build_reconfig(request.build_dir, request.make_options) config_end = time.time() if not success: return KunitResult(KunitStatus.CONFIG_FAILURE, 'could not configure kernel') @@ -55,7 +57,7 @@ def run_tests(linux: kunit_kernel.LinuxSourceTree, kunit_parser.print_with_timestamp('Building KUnit Kernel ...')

build_start = time.time() - success = linux.build_um_kernel(request.jobs, request.build_dir) + success = linux.build_um_kernel(request.jobs, request.build_dir, request.make_options) build_end = time.time() if not success: return KunitResult(KunitStatus.BUILD_FAILURE, 'could not build kernel') @@ -120,6 +122,10 @@ def main(argv, linux=None): help='Uses a default .kunitconfig.', action='store_true')

+ run_parser.add_argument('--make_options', + help='X=Y make option, can be repeated.', + action='append') + cli_args = parser.parse_args(argv)

if cli_args.subcommand == 'run': @@ -143,7 +149,8 @@ def main(argv, linux=None): cli_args.timeout, cli_args.jobs, cli_args.build_dir, - cli_args.defconfig) + cli_args.defconfig, + cli_args.make_options) result = run_tests(linux, request) if result.status != KunitStatus.SUCCESS: sys.exit(1) diff --git a/tools/testing/kunit/kunit_kernel.py b/tools/testing/kunit/kunit_kernel.py index d99ae75ef72f..27758d6d115b 100644 --- a/tools/testing/kunit/kunit_kernel.py +++ b/tools/testing/kunit/kunit_kernel.py @@ -35,8 +35,10 @@ class LinuxSourceTreeOperations(object): except subprocess.CalledProcessError as e: raise ConfigError(e.output)

- def make_olddefconfig(self, build_dir): + def make_olddefconfig(self, build_dir, make_options): command = ['make', 'ARCH=um', 'olddefconfig'] + if make_options: + command.extend(make_options) if build_dir: command += ['O=' + build_dir] try: @@ -46,8 +48,10 @@ class LinuxSourceTreeOperations(object): except subprocess.CalledProcessError as e: raise ConfigError(e.output)

- def make(self, jobs, build_dir): + def make(self, jobs, build_dir, make_options): command = ['make', 'ARCH=um', '--jobs=' + str(jobs)] + if make_options: + command.extend(make_options) if build_dir: command += ['O=' + build_dir] try: @@ -107,19 +111,19 @@ class LinuxSourceTree(object): return False return True

- def build_config(self, build_dir): + def build_config(self, build_dir, make_options): kconfig_path = get_kconfig_path(build_dir) if build_dir and not os.path.exists(build_dir): os.mkdir(build_dir) self._kconfig.write_to_file(kconfig_path) try: - self._ops.make_olddefconfig(build_dir) + self._ops.make_olddefconfig(build_dir, make_options) except ConfigError as e: logging.error(e) return False return self.validate_config(build_dir)

- def build_reconfig(self, build_dir): + def build_reconfig(self, build_dir, make_options): """Creates a new .config if it is not a subset of the .kunitconfig.""" kconfig_path = get_kconfig_path(build_dir) if os.path.exists(kconfig_path): @@ -128,17 +132,17 @@ class LinuxSourceTree(object): if not self._kconfig.is_subset_of(existing_kconfig): print('Regenerating .config ...') os.remove(kconfig_path) - return self.build_config(build_dir) + return self.build_config(build_dir, make_options) else: return True else: print('Generating .config ...') - return self.build_config(build_dir) + return self.build_config(build_dir, make_options)

- def build_um_kernel(self, jobs, build_dir): + def build_um_kernel(self, jobs, build_dir, make_options): try: - self._ops.make_olddefconfig(build_dir) - self._ops.make(jobs, build_dir) + self._ops.make_olddefconfig(build_dir, make_options) + self._ops.make(jobs, build_dir, make_options) except (ConfigError, BuildError) as e: logging.error(e) return False