Linux Kernel: Checkpatch Documentation mentorship

Lukas Bulwahn lukas.bulwahn at
Mon Jul 19 04:27:29 UTC 2021

On Sun, Jul 18, 2021 at 8:20 PM Rahul Joshi <mrjoshi0147 at> wrote:
> I am interested in the Checkpatch Documentation mentorship program, and I would like to work on the tasks for the mentee selection.

Thanks for your interest.

The zeroth task is to learn suitable netiquette for the communication with

the kernel community. Below are some basic rules and pointers for this
mentorship. More information on kernel netiquette is also at

First, please do not top-post.

    A: Because we read from top to bottom, left to right.
    Q: Why should I start my reply below the quoted text?

    A: Because it messes up the order in which people normally read text.
    Q: Why is top-posting such a bad thing?

    A: The lost context.
    Q: What makes top-posted replies harder to read than bottom-posted?

    A: Yes.
    Q: Should I trim down the quoted part of an email to which I'm replying?

Second, please always CC: linux-kernel-mentees at

Third, set up your email client according to the kernel community rules.

Here is some information to that:

Generally more information on submitting patches and responding on
replies is at

Once the zeroth task is understood, you can now move on to the first
task: Running checkpatch on a specific file

Get a clone of the Linux kernel repository. The script
is under the scripts directory.

Then, the first task is to run on a few files below and
share the results:


Which information on these rules that checkpatch warns about is
available in the Checkpatch Documentation?
If documentation of these rules is available, explain your
understanding of the rules in your own words.
If no information is available in the documentation, explain your
understanding of the rule.

In any case, explain the violation that is checked and raised in the
checkpatch script, i.e., what is implemented in checkpatch to check
the rule and possible violations.

Explain how to possibly fix this code with regards to that violation.

Once you succeed on this first task, we inform you about the further
second and third task.

If you fail on any of those tasks, you are out of the selection process.

The selection of the mentee will happen according to schedule, at
earliest on August 12th and at latest at the end of August. More
information is available at

Good luck.


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