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External tools, e.g., Intel GPU tools (IGT), support execution of
individual selftests provided by kernel modules. That could be also
applicable to kunit test modules if they provided test filtering. But
test filtering is now possible only when kunit code is built into the
kernel. Moreover, a filter can be specified only at boot time, then
reboot is required each time a different filter is needed.
Build the test filtering code also when kunit is configured as a module,
expose test filtering functions to other kunit source files, and use them
in kunit module notifier callback functions. Userspace can then reload
the kunit module with a value of the filter_glob parameter tuned to a
specific kunit test module every time it wants to limit the scope of tests
executed on that module load. Make the kunit.filter* parameters visible
in sysfs for user convenience.
v5: Refresh on tpp of attributes filtering fix
v4: Refresh on top of newly applied attributes patches and changes
introdced by new versions of other patches submitted in series with
this one.
v3: Fix CONFIG_GLOB, required by filtering functions, not selected when
building as a module (lkp@intel.com).
v2: Fix new name of a structure moved to kunit namespace not updated
across all uses (lkp@intel.com).
Signed-off-by: Janusz Krzysztofik <janusz.krzysztofik@linux.intel.com>
Reviewed-by: David Gow <davidgow@google.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
73 lines
2.6 KiB
Text
73 lines
2.6 KiB
Text
#
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# KUnit base configuration
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#
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menuconfig KUNIT
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tristate "KUnit - Enable support for unit tests"
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select GLOB
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help
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Enables support for kernel unit tests (KUnit), a lightweight unit
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testing and mocking framework for the Linux kernel. These tests are
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able to be run locally on a developer's workstation without a VM or
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special hardware when using UML. Can also be used on most other
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architectures. For more information, please see
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Documentation/dev-tools/kunit/.
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if KUNIT
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config KUNIT_DEBUGFS
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bool "KUnit - Enable /sys/kernel/debug/kunit debugfs representation" if !KUNIT_ALL_TESTS
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default KUNIT_ALL_TESTS
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help
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Enable debugfs representation for kunit. Currently this consists
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of /sys/kernel/debug/kunit/<test_suite>/results files for each
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test suite, which allow users to see results of the last test suite
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run that occurred.
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config KUNIT_TEST
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tristate "KUnit test for KUnit" if !KUNIT_ALL_TESTS
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default KUNIT_ALL_TESTS
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help
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Enables the unit tests for the KUnit test framework. These tests test
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the KUnit test framework itself; the tests are both written using
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KUnit and test KUnit. This option should only be enabled for testing
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purposes by developers interested in testing that KUnit works as
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expected.
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config KUNIT_EXAMPLE_TEST
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tristate "Example test for KUnit" if !KUNIT_ALL_TESTS
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default KUNIT_ALL_TESTS
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help
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Enables an example unit test that illustrates some of the basic
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features of KUnit. This test only exists to help new users understand
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what KUnit is and how it is used. Please refer to the example test
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itself, lib/kunit/example-test.c, for more information. This option
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is intended for curious hackers who would like to understand how to
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use KUnit for kernel development.
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config KUNIT_ALL_TESTS
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tristate "All KUnit tests with satisfied dependencies"
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help
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Enables all KUnit tests, if they can be enabled.
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KUnit tests run during boot and output the results to the debug log
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in TAP format (http://testanything.org/). Only useful for kernel devs
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running the KUnit test harness, and not intended for inclusion into a
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production build.
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For more information on KUnit and unit tests in general please refer
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to the KUnit documentation in Documentation/dev-tools/kunit/.
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If unsure, say N.
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config KUNIT_DEFAULT_ENABLED
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bool "Default value of kunit.enable"
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default y
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help
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Sets the default value of kunit.enable. If set to N then KUnit
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tests will not execute unless kunit.enable=1 is passed to the
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kernel command line.
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In most cases this should be left as Y. Only if additional opt-in
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behavior is needed should this be set to N.
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endif # KUNIT
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