linux-kernel - Re: [PATCH] docs/kselftest: add more guidelines for adding new tests

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Date:   Fri, 18 Mar 2022 11:50:34 +0700
From:   Bagas Sanjaya <bagasdotme@...il.com>
To:     Muhammad Usama Anjum <usama.anjum@...labora.com>,
        Shuah Khan <shuah@...nel.org>, Jonathan Corbet <corbet@....net>
Cc:     kernel@...labora.com, linux-kselftest@...r.kernel.org,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] docs/kselftest: add more guidelines for adding new tests

On 18/03/22 00.27, Muhammad Usama Anjum wrote:
> Add the following new guidelines:
> - Add instruction to use lib.mk
> - Add instruction about how to use headers from kernel source
> - Add instruction to add .gitignore file
> - Add instruction about how to add new test in selftests/Makefile
> - Add instruction about different build commands to test
> 

Too verbose, because people can figure out what were added in the diff
without explicitly mention them.
  
> + * Use lib.mk instead of writing Makefile from sratch. Specify flags and
> +   binaries generation flags on need basis before including lib.mk. ::
> +
> +    CFLAGS = $(KHDR_INCLUDES)
> +    TEST_GEN_PROGS := close_range_test
> +    include ../lib.mk
> +

I think what you mean is "In your Makefile, use facilities from lib.mk by
including it instead of reinventing the wheel.", right?

> + * Add new test name in TARGETS in selftests/Makefile::
> +
> +    TARGETS += android
> +
> + * All of the following build commands should be successful
> +
> +   - Same directory build of kselftests::
> +
> +      make kselftest-all
> +      make kselftest-install
> +      make kselftest-clean
> +      make kselftest-gen_tar
> +
> +   - Build with absolute output directory path::
> +
> +      make kselftest-all O=/abs_build_path
> +      make kselftest-install O=/abs_build_path
> +      make kselftest-clean O=/abs_build_path
> +      make kselftest-gen_tar O=/abs_build_path
> +
> +   - Build with relative output directory path::
> +
> +      make kselftest-all O=relative_path
> +      make kselftest-install O=relative_path
> +      make kselftest-clean O=relative_path
> +      make kselftest-gen_tar O=relative_path
> +
> +   - Build from Makefile of selftests directly::
> +
> +      make -C tools/testing/selftests
> +      make -C tools/testing/selftests O=/abs_build_path
> +      make -C tools/testing/selftests O=relative_path
> +

For simplicity, we can say "All changes should pass
kselftest-{all,install,clean,gen_tar} builds."

You don't need to spell out full command-line in the guideline unless
absolutely necessary, in general.

-- 
An old man doll... just what I always wanted! - Clara