How to properly write tests for kernel functions

Maxim Pugachev at
Thu Nov 5 15:18:40 EST 2015

On Thu, Nov 5, 2015 at 10:54 PM, Greg KH <greg at> wrote:
> On Thu, Nov 05, 2015 at 11:43:36AM +0300, Maxim Pugachev wrote:
>> >> So, I'm wondering, whether there is an example or guidelines that is
>> >> worth to follow.
>> >
>> > It all depends on what you want to test.  There is no "general" way to
>> > do this as all subsystems / parts of the kernel are different.
>> I'd like to add more tests in lib/test-hexdump.c. To my mind, I have 2 options:
>> follow the current style, or perform a bit of reorganization. I'm
>> inclined to the
>> second one given that the addition of new tests may lead to unreadable code.
>> But I doubt which way is better in this case.
> It's up to you, but if you do reorganize the code, do that in a patch
> series that changes the structure before adding new tests, in order for
> them to be accepted upstream.
> good luck!

Greg, thank you for your answers!

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