[v3] Documentation: kunit: Add CLI args for kunit_tool

Run_wrapper.rst was missing some command line arguments. Added
additional args in the file.

Signed-off-by: Sadiya Kazi <sadiyakazi@google.com>
---
Changes since v2:
https://lore.kernel.org/linux-kselftest/20220721081026.1247067-1-sadiyakazi@google.com/
-Added a code block for —kconfig_add argument to make the styling consistent
-Slightly changed the words for —arch argument
-Changed QEMU to qemu wherever applicable for the cli args
-Changed the style for ``-smp 8``
-Changed "Might be repeated" to "may be repeated” for kernel_args



---
 Documentation/dev-tools/kunit/run_wrapper.rst | 61 ++++++++++++++++++-
 1 file changed, 60 insertions(+), 1 deletion(-)

On Sun, Jul 24, 2022 at 06:47:59PM +0000, Sadiya Kazi wrote:
> Run_wrapper.rst was missing some command line arguments. Added
> additional args in the file.
> 
Hi Sadiya,

The patch description looks awkward. Better say:
"Many kunit_tool common command line arguments are missing from the
documentation. Document them."


> +- ``--kconfig_add``: Specifies additional configuration options to be
> +  appended to the ``.kunitconfig`` file. For example:
> +  .. code-block::
> +	./tools/testing/kunit/kunit.py run --kconfig_add CONFIG_KASAN=y
> +

Above generated new warning:

Documentation/dev-tools/kunit/run_wrapper.rst:262: WARNING: Unexpected indentation.

I have applied the fixup:

---- >8 ----

Hi Sadiya,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on lwn/docs-next]
[also build test WARNING on linus/master v5.19-rc8 next-20220722]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Sadiya-Kazi/Documentation-kunit-Add-CLI-args-for-kunit_tool/20220725-025055
base:   git://git.lwn.net/linux.git docs-next
reproduce: make htmldocs

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> Documentation/dev-tools/kunit/run_wrapper.rst:262: WARNING: Unexpected indentation.

vim +262 Documentation/dev-tools/kunit/run_wrapper.rst

   226	
   227	- ``--help``: Lists all available options. To list common options,
   228	  place ``--help`` before the command. To list options specific to that
   229	  command, place ``--help`` after the command.
   230	
   231	  .. note:: Different commands (``config``, ``build``, ``run``, etc)
   232	            have different supported options.
   233	- ``--build_dir``: Specifies kunit_tool build directory. It includes
   234	  the ``.kunitconfig``, ``.config`` files and compiled kernel.
   235	
   236	- ``--make_options``: Specifies additional options to pass to make, when
   237	  compiling a kernel (using ``build`` or ``run`` commands). For example:
   238	  to enable compiler warnings, we can pass ``--make_options W=1``.
   239	
   240	- ``--alltests``: Builds a UML kernel with all config options enabled
   241	  using ``make allyesconfig``. This allows us to run as many tests as
   242	  possible.
   243	
   244	  .. note:: It is slow and prone to breakage as new options are
   245	            added or modified. Instead, enable all tests
   246	            which have satisfied dependencies by adding
   247	            ``CONFIG_KUNIT_ALL_TESTS=y`` to your ``.kunitconfig``.
   248	
   249	- ``--kunitconfig``: Specifies the path or the directory of the ``.kunitconfig``
   250	  file. For example:
   251	
   252	  - ``lib/kunit/.kunitconfig`` can be the path of the file.
   253	
   254	  - ``lib/kunit`` can be the directory in which the file is located.
   255	
   256	  This file is used to build and run with a predefined set of tests
   257	  and their dependencies. For example, to run tests for a given subsystem.
   258	
   259	- ``--kconfig_add``: Specifies additional configuration options to be
   260	  appended to the ``.kunitconfig`` file. For example:
   261	  .. code-block::
 > 262		./tools/testing/kunit/kunit.py run --kconfig_add CONFIG_KASAN=y
   263

Hi Sadiya,

On 7/24/22 15:47, Sadiya Kazi wrote:
> Run_wrapper.rst was missing some command line arguments. Added
> additional args in the file.
> 
> Signed-off-by: Sadiya Kazi <sadiyakazi@google.com>

Usually, when people send their Reviewed-by on a previous version, we
send the next version with their tags in chronological order [1].

> ---
> Changes since v2:
> https://lore.kernel.org/linux-kselftest/20220721081026.1247067-1-sadiyakazi@google.com/
> -Added a code block for —kconfig_add argument to make the styling consistent
> -Slightly changed the words for —arch argument
> -Changed QEMU to qemu wherever applicable for the cli args
> -Changed the style for ``-smp 8``
> -Changed "Might be repeated" to "may be repeated” for kernel_args
> 

Also, it is a common practice to keep the entire changelog here [1].

Other than the error reported-by kernel test robot, looks good to me.

Reviewed-by: Maíra Canal <mairacanal@riseup.net>

[1]
https://docs.kernel.org/process/submitting-patches.html#the-canonical-patch-format

Best Regards,
- Maíra Canal

> 
> 
> ---
>  Documentation/dev-tools/kunit/run_wrapper.rst | 61 ++++++++++++++++++-
>  1 file changed, 60 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/dev-tools/kunit/run_wrapper.rst b/Documentation/dev-tools/kunit/run_wrapper.rst
> index 5e560f2c5fca..ed3715fef32d 100644
> --- a/Documentation/dev-tools/kunit/run_wrapper.rst
> +++ b/Documentation/dev-tools/kunit/run_wrapper.rst
> @@ -233,7 +233,7 @@ Command-Line Arguments
>  ======================
>  
>  kunit_tool has a number of other command-line arguments which can
> -be useful for our test environment. Below the most commonly used
> +be useful for our test environment. Below are the most commonly used
>  command line arguments:
>  
>  - ``--help``: Lists all available options. To list common options,
> @@ -257,3 +257,62 @@ command line arguments:
>              added or modified. Instead, enable all tests
>              which have satisfied dependencies by adding
>              ``CONFIG_KUNIT_ALL_TESTS=y`` to your ``.kunitconfig``.
> +
> +- ``--kunitconfig``: Specifies the path or the directory of the ``.kunitconfig``
> +  file. For example:
> +
> +  - ``lib/kunit/.kunitconfig`` can be the path of the file.
> +
> +  - ``lib/kunit`` can be the directory in which the file is located.
> +
> +  This file is used to build and run with a predefined set of tests
> +  and their dependencies. For example, to run tests for a given subsystem.
> +
> +- ``--kconfig_add``: Specifies additional configuration options to be
> +  appended to the ``.kunitconfig`` file. For example:
> +  .. code-block::
> +	./tools/testing/kunit/kunit.py run --kconfig_add CONFIG_KASAN=y
> +
> +- ``--arch``: Runs tests on the specified architecture. The architecture
> +  argument is same as the Kbuild ARCH environment variable.
> +  For example, i386, x86_64, arm, um, etc. Non-UML architectures run on qemu.
> +  Default is `um`.
> +
> +- ``--cross_compile``: Specifies the Kbuild toolchain. It passes the
> +  same argument as passed to the ``CROSS_COMPILE`` variable used by
> +  Kbuild. This will be the prefix for the toolchain
> +  binaries such as GCC. For example:
> +
> +  - ``sparc64-linux-gnu-`` if we have the sparc toolchain installed on
> +    our system.
> +
> +  - ``$HOME/toolchains/microblaze/gcc-9.2.0-nolibc/microblaze-linux/bin/microblaze-linux``
> +    if we have downloaded the microblaze toolchain from the 0-day
> +    website to a specified path in our home directory called toolchains.
> +
> +- ``--qemu_config``: Specifies the path to a file containing a
> +  custom qemu architecture definition. This should be a python file
> +  containing a `QemuArchParams` object.
> +
> +- ``--qemu_args``: Specifies additional qemu arguments, for example, ``-smp 8``.
> +
> +- ``--jobs``: Specifies the number of jobs (commands) to run simultaneously.
> +  By default, this is set to the number of cores on your system.
> +
> +- ``--timeout``: Specifies the maximum number of seconds allowed for all tests to run.
> +  This does not include the time taken to build the tests.
> +
> +- ``--kernel_args``: Specifies additional kernel command-line arguments. May be repeated.
> +
> +- ``--run_isolated``: If set, boots the kernel for each individual suite/test.
> +  This is useful for debugging a non-hermetic test, one that
> +  might pass/fail based on what ran before it.
> +
> +- ``--raw_output``: If set, generates unformatted output from kernel. Possible options are:
> +
> +   - ``all``: To view the full kernel output, use ``--raw_output=all``.
> +
> +   - ``kunit``: This is the default option and filters to KUnit output. Use ``--raw_output`` or ``--raw_output=kunit``.
> +
> +- ``--json``: If set, stores the test results in a JSON format and prints to `stdout` or
> +  saves to a file if a filename is specified.