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Date: Fri, 5 Nov 2021 18:30:58 -0700
From: Daniel Latypov <dlatypov@...gle.com>
To: brendanhiggins@...gle.com, davidgow@...gle.com
Cc: linux-kernel@...r.kernel.org, kunit-dev@...glegroups.com,
linux-kselftest@...r.kernel.org, skhan@...uxfoundation.org,
Daniel Latypov <dlatypov@...gle.com>
Subject: [PATCH 2/2] kunit: tool: add --kconfig_add to allow easily tweaking kunitconfigs
E.g. run tests but with KASAN
$ ./tools/testing/kunit/kunit.py run --arch=x86_64 --kconfig_add=CONFIG_KASAN=y
This also works with --kunitconfig
$ ./tools/testing/kunit/kunit.py run --arch=x86_64 --kunitconfig=fs/ext4 --kconfig_add=CONFIG_KASAN=y
This flag is inspired by TuxMake's --kconfig-add, see
https://gitlab.com/Linaro/tuxmake#examples.
Our version just uses "_" as the delimiter for consistency with
pre-existing flags like --build_dir, --make_options, --kernel_args, etc.
Note: this does make it easier to run into a pre-existing edge case:
$ ./tools/testing/kunit/kunit.py run --arch=x86_64 --kconfig_add=CONFIG_KASAN=y
$ ./tools/testing/kunit/kunit.py run --arch=x86_64
This second invocation ^ still has KASAN enabled!
kunit.py won't call olddefconfig if our current .config is already a
superset of the provided kunitconfig.
Signed-off-by: Daniel Latypov <dlatypov@...gle.com>
---
tools/testing/kunit/kunit.py | 8 ++++++++
tools/testing/kunit/kunit_kernel.py | 5 +++++
tools/testing/kunit/kunit_tool_test.py | 18 ++++++++++++++++++
3 files changed, 31 insertions(+)
diff --git a/tools/testing/kunit/kunit.py b/tools/testing/kunit/kunit.py
index 68e6f461c758..be58f4c93806 100755
--- a/tools/testing/kunit/kunit.py
+++ b/tools/testing/kunit/kunit.py
@@ -280,6 +280,10 @@ def add_common_opts(parser) -> None:
' If given a directory, (e.g. lib/kunit), "/.kunitconfig" '
'will get automatically appended.',
metavar='kunitconfig')
+ parser.add_argument('--kconfig_add',
+ help='Additional Kconfig options to append to the '
+ '.kunitconfig, e.g. CONFIG_KASAN=y. Can be repeated.',
+ action='append')
parser.add_argument('--arch',
help=('Specifies the architecture to run tests under. '
@@ -398,6 +402,7 @@ def main(argv, linux=None):
if not linux:
linux = kunit_kernel.LinuxSourceTree(cli_args.build_dir,
kunitconfig_path=cli_args.kunitconfig,
+ kconfig_add=cli_args.kconfig_add,
arch=cli_args.arch,
cross_compile=cli_args.cross_compile,
qemu_config_path=cli_args.qemu_config)
@@ -423,6 +428,7 @@ def main(argv, linux=None):
if not linux:
linux = kunit_kernel.LinuxSourceTree(cli_args.build_dir,
kunitconfig_path=cli_args.kunitconfig,
+ kconfig_add=cli_args.kconfig_add,
arch=cli_args.arch,
cross_compile=cli_args.cross_compile,
qemu_config_path=cli_args.qemu_config)
@@ -439,6 +445,7 @@ def main(argv, linux=None):
if not linux:
linux = kunit_kernel.LinuxSourceTree(cli_args.build_dir,
kunitconfig_path=cli_args.kunitconfig,
+ kconfig_add=cli_args.kconfig_add,
arch=cli_args.arch,
cross_compile=cli_args.cross_compile,
qemu_config_path=cli_args.qemu_config)
@@ -457,6 +464,7 @@ def main(argv, linux=None):
if not linux:
linux = kunit_kernel.LinuxSourceTree(cli_args.build_dir,
kunitconfig_path=cli_args.kunitconfig,
+ kconfig_add=cli_args.kconfig_add,
arch=cli_args.arch,
cross_compile=cli_args.cross_compile,
qemu_config_path=cli_args.qemu_config)
diff --git a/tools/testing/kunit/kunit_kernel.py b/tools/testing/kunit/kunit_kernel.py
index 51ee6e5dae91..7d459d6d6ff2 100644
--- a/tools/testing/kunit/kunit_kernel.py
+++ b/tools/testing/kunit/kunit_kernel.py
@@ -224,6 +224,7 @@ class LinuxSourceTree(object):
build_dir: str,
load_config=True,
kunitconfig_path='',
+ kconfig_add: Optional[List[str]]=None,
arch=None,
cross_compile=None,
qemu_config_path=None) -> None:
@@ -249,6 +250,10 @@ class LinuxSourceTree(object):
shutil.copyfile(DEFAULT_KUNITCONFIG_PATH, kunitconfig_path)
self._kconfig = kunit_config.parse_file(kunitconfig_path)
+ if kconfig_add:
+ kconfig = kunit_config.parse_from_string('\n'.join(kconfig_add))
+ self._kconfig.merge_in_entries(kconfig)
+
def clean(self) -> bool:
try:
diff --git a/tools/testing/kunit/kunit_tool_test.py b/tools/testing/kunit/kunit_tool_test.py
index 4ec70e41ec5a..7e42a7c27987 100755
--- a/tools/testing/kunit/kunit_tool_test.py
+++ b/tools/testing/kunit/kunit_tool_test.py
@@ -334,6 +334,10 @@ class LinuxSourceTreeTest(unittest.TestCase):
pass
kunit_kernel.LinuxSourceTree('', kunitconfig_path=dir)
+ def test_kconfig_add(self):
+ tree = kunit_kernel.LinuxSourceTree('', kconfig_add=['CONFIG_NOT_REAL=y'])
+ self.assertIn(kunit_config.KconfigEntry('NOT_REAL', 'y'), tree._kconfig.entries())
+
def test_invalid_arch(self):
with self.assertRaisesRegex(kunit_kernel.ConfigError, 'not a valid arch, options are.*x86_64'):
kunit_kernel.LinuxSourceTree('', arch='invalid')
@@ -540,6 +544,7 @@ class KUnitMainTest(unittest.TestCase):
# Just verify that we parsed and initialized it correctly here.
mock_linux_init.assert_called_once_with('.kunit',
kunitconfig_path='mykunitconfig',
+ kconfig_add=None,
arch='um',
cross_compile=None,
qemu_config_path=None)
@@ -551,6 +556,19 @@ class KUnitMainTest(unittest.TestCase):
# Just verify that we parsed and initialized it correctly here.
mock_linux_init.assert_called_once_with('.kunit',
kunitconfig_path='mykunitconfig',
+ kconfig_add=None,
+ arch='um',
+ cross_compile=None,
+ qemu_config_path=None)
+
+ @mock.patch.object(kunit_kernel, 'LinuxSourceTree')
+ def test_run_kconfig_add(self, mock_linux_init):
+ mock_linux_init.return_value = self.linux_source_mock
+ kunit.main(['run', '--kconfig_add=CONFIG_KASAN=y', '--kconfig_add=CONFIG_KCSAN=y'])
+ # Just verify that we parsed and initialized it correctly here.
+ mock_linux_init.assert_called_once_with('.kunit',
+ kunitconfig_path=None,
+ kconfig_add=['CONFIG_KASAN=y', 'CONFIG_KCSAN=y'],
arch='um',
cross_compile=None,
qemu_config_path=None)
--
2.34.0.rc0.344.g81b53c2807-goog
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