[PATCH] doc: Add basic information about running CI tests

[Sean Anderson <seanga2@gmail.com>]

On 12/18/20 5:14 PM, Tom Rini wrote:
> Start out by documenting general expectations on when CI is run, how
> anyone can run Azure pipelines, and how GitLab CI pipelines can be run.

Should travis be documented as well?

--Sean

> Signed-off-by: Tom Rini <trini@konsulko.com>
> ---
>   doc/develop/ci_testing.rst | 45 ++++++++++++++++++++++++++++++++++++++
>   doc/develop/index.rst      |  1 +
>   2 files changed, 46 insertions(+)
>   create mode 100644 doc/develop/ci_testing.rst
> 
> diff --git a/doc/develop/ci_testing.rst b/doc/develop/ci_testing.rst
> new file mode 100644
> index 000000000000..48dbec4a4452
> --- /dev/null
> +++ b/doc/develop/ci_testing.rst
> @@ -0,0 +1,45 @@
> +.. SPDX-License-Identifier: GPL-2.0+
> +
> +Continuous Integration testing
> +==============================
> +
> +All changes require passing our continuous integration tests prior to being
> +merged in to mainline.  To help facilitate merges being accepted quickly,
> +custodians are encouraged but not required to run a pipeline prior to sending a
> +pull request.  Individual developers submitting significant or widespread
> +changes are encouraged to run a pipeline themselves prior to posting.
> +
> +In order to make this process as easy as possible, the ability to run a CI
> +pipeline is provided in both Azure and GitLab.  Both of these pipelines perform
> +their Linux build jobs on the same Docker container image.
> +
> +Azure Pipelines
> +---------------
> +
> +Currently there are two ways to run a Microsoft Azure Pipeline test for U-Boot.
> +The first way is to create an account with Microsoft at
> +https://azure.microsoft.com/en-us/services/devops/ and then use the
> +``.azure-pipelines.yml`` file in the U-Boot repository as the pipeline
> +description.  The second way is to use GitHub and submit a pull request against
> +https://github.com/u-boot/u-boot as this will trigger an Azure pipeline run.
> +Clicking on your pull request on the list at
> +https://github.com/u-boot/u-boot/pulls and then the "Checks" tab will show the
> +results.
> +
> +GitLab CI Pipelines
> +-------------------
> +
> +Currently, we support running GitLab CI pipelines only for custodians, due to
> +the resources the project has available.  For Custodians, it is a matter of
> +enabling the pipeline feature in your project repository following the standard
> +GitLab documentation.  For non-custodians, the pipeline itself is part of the
> +tree and should be able to be used on any GitLab instance, with whatever
> +runners you are able to provide.
> +
> +Docker container
> +----------------
> +
> +As previously states, both of the above pipelines build using the same Docker
> +container image.  This is maintained in the repository at
> +https://gitlab.denx.de/u-boot/gitlab-ci-runner and new images are made as
> +needed to support new tests or features.
> diff --git a/doc/develop/index.rst b/doc/develop/index.rst
> index 0a7e204b3438..d5619e8fce86 100644
> --- a/doc/develop/index.rst
> +++ b/doc/develop/index.rst
> @@ -7,6 +7,7 @@ Develop U-Boot
>   .. toctree::
>      :maxdepth: 2
>   
> +   ci_testing
>      coccinelle
>      commands
>      crash_dumps
>