linux-kernel - Re: [PATCH v8 07/10] lib: add basic KUnit test for lib/math

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Date: Fri, 17 May 2024 23:14:27 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Devarsh Thakkar <devarsht@...com>
Cc: mchehab@...nel.org, hverkuil-cisco@...all.nl,
	linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
	benjamin.gaignard@...labora.com, sebastian.fricke@...labora.com,
	akpm@...ux-foundation.org, gregkh@...uxfoundation.org,
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	vigneshr@...com, a-bhatia1@...com, j-luthra@...com, b-brnich@...com,
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	andrzej.p@...labora.com, nicolas@...fresne.ca, davidgow@...gle.com,
	dlatypov@...gle.com
Subject: Re: [PATCH v8 07/10] lib: add basic KUnit test for lib/math

On Fri, May 17, 2024 at 11:06:07PM +0530, Devarsh Thakkar wrote:
> From: Daniel Latypov <dlatypov@...gle.com>
> 
> Add basic test coverage for files that don't require any config options:
> * part of math.h (what seem to be the most commonly used macros)
> * gcd.c
> * lcm.c
> * int_sqrt.c
> * reciprocal_div.c
> (Ignored int_pow.c since it's a simple textbook algorithm.)
> 
> These tests aren't particularly interesting, but they
> * provide short and simple examples of parameterized tests
> * provide a place to add tests for any new files in this dir
> * are written so adding new test cases to cover edge cases should be
>   easy
>   * looking at code coverage, we hit all the branches in the .c files

..

> [devarsht: Rebase to 6.9 and change license to GPL]

I'm not sure that you may change license. It needs the author's confirmation.

> ---
> Changes since v6:
> * Rebase to linux-next, change license to GPL as suggested by checkpatch.

Note, checkpatch.pl is not false positives free. Be careful
with what it suggests.

> +#include <kunit/test.h>
> +#include <linux/gcd.h>

> +#include <linux/kernel.h>

Do you know why this header is included?

> +#include <linux/lcm.h>

+ math.h // obviously
+ module.h

> +#include <linux/reciprocal_div.h>

+ types.h

..

Other than above, LGTM.

-- 
With Best Regards,
Andy Shevchenko