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authorMickaël Salaün <mic@digikod.net>2017-05-26 20:43:59 +0200
committerShuah Khan <shuahkh@osg.samsung.com>2017-06-07 18:07:21 +0200
commit55c70f11e729f17c86f2400a457138682e03b00f (patch)
tree2a1e953ddedadfa0cb3a9a470424a2d5ad00bf9a /Documentation/kselftest.txt
parentselftests: Cosmetic renames in kselftest_harness.h (diff)
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Documentation/dev-tools: Add kselftest
Move kselftest.txt to dev-tools/kselftest.rst . Signed-off-by: Mickaël Salaün <mic@digikod.net> Acked-by: Kees Cook <keescook@chromium.org> Cc: Jonathan Corbet <corbet@lwn.net> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
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-Linux Kernel Selftests
-
-The kernel contains a set of "self tests" under the tools/testing/selftests/
-directory. These are intended to be small tests to exercise individual code
-paths in the kernel. Tests are intended to be run after building, installing
-and booting a kernel.
-
-On some systems, hot-plug tests could hang forever waiting for cpu and
-memory to be ready to be offlined. A special hot-plug target is created
-to run full range of hot-plug tests. In default mode, hot-plug tests run
-in safe mode with a limited scope. In limited mode, cpu-hotplug test is
-run on a single cpu as opposed to all hotplug capable cpus, and memory
-hotplug test is run on 2% of hotplug capable memory instead of 10%.
-
-Running the selftests (hotplug tests are run in limited mode)
-=============================================================
-
-To build the tests:
- $ make -C tools/testing/selftests
-
-
-To run the tests:
- $ make -C tools/testing/selftests run_tests
-
-To build and run the tests with a single command, use:
- $ make kselftest
-
-- note that some tests will require root privileges.
-
-
-Running a subset of selftests
-========================================
-You can use the "TARGETS" variable on the make command line to specify
-single test to run, or a list of tests to run.
-
-To run only tests targeted for a single subsystem:
- $ make -C tools/testing/selftests TARGETS=ptrace run_tests
-
-You can specify multiple tests to build and run:
- $ make TARGETS="size timers" kselftest
-
-See the top-level tools/testing/selftests/Makefile for the list of all
-possible targets.
-
-
-Running the full range hotplug selftests
-========================================
-
-To build the hotplug tests:
- $ make -C tools/testing/selftests hotplug
-
-To run the hotplug tests:
- $ make -C tools/testing/selftests run_hotplug
-
-- note that some tests will require root privileges.
-
-
-Install selftests
-=================
-
-You can use kselftest_install.sh tool installs selftests in default
-location which is tools/testing/selftests/kselftest or a user specified
-location.
-
-To install selftests in default location:
- $ cd tools/testing/selftests
- $ ./kselftest_install.sh
-
-To install selftests in a user specified location:
- $ cd tools/testing/selftests
- $ ./kselftest_install.sh install_dir
-
-Running installed selftests
-===========================
-
-Kselftest install as well as the Kselftest tarball provide a script
-named "run_kselftest.sh" to run the tests.
-
-You can simply do the following to run the installed Kselftests. Please
-note some tests will require root privileges.
-
-cd kselftest
-./run_kselftest.sh
-
-Contributing new tests
-======================
-
-In general, the rules for selftests are
-
- * Do as much as you can if you're not root;
-
- * Don't take too long;
-
- * Don't break the build on any architecture, and
-
- * Don't cause the top-level "make run_tests" to fail if your feature is
- unconfigured.
-
-Contributing new tests(details)
-===============================
-
- * Use TEST_GEN_XXX if such binaries or files are generated during
- compiling.
- TEST_PROGS, TEST_GEN_PROGS mean it is the excutable tested by
- default.
- TEST_PROGS_EXTENDED, TEST_GEN_PROGS_EXTENDED mean it is the
- executable which is not tested by default.
- TEST_FILES, TEST_GEN_FILES mean it is the file which is used by
- test.