linux-kernel - Re: [PATCH] scsi: kconfig: When possible, compile drivers with COMPILE

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Date:	Fri, 16 Oct 2015 14:08:14 +0100
From:	Luis de Bethencourt <luisbg@....samsung.com>
To:	James Bottomley <James.Bottomley@...senPartnership.com>
CC:	linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org
Subject: Re: [PATCH] scsi: kconfig: When possible, compile drivers with COMPILE_TEST

On 15/10/15 00:39, James Bottomley wrote:
> On Thu, 2015-10-15 at 00:30 +0100, Luis de Bethencourt wrote:
>> On 14/10/15 23:42, James Bottomley wrote:
>>> On Wed, 2015-10-14 at 22:13 +0100, Luis de Bethencourt wrote:
>>>> These drivers only have runtime but no build time dependencies, so they can
>>>> be built for testing purposes if the Kconfig COMPILE_TEST option is enabled.
>>>>
>>>> This is useful to have more build coverage and make sure that drivers are
>>>> not affected by changes that could cause build regressions.
>>>
>>> I don't think I understand the purpose.  If the object is to build a
>>> load of old ISA drivers, why not just turn on CONFIG_ISA in the test
>>> build? That's how I build test SCSI on my systems.
>>>
>>> James
>>>
>>>
>>
>> Hi James,
>>
>> The idea is that the more drivers are built with make allyesconfig, the better.
>>
>> I added COMPILE_TEST to all the drivers that can be built without having ISA,
>> since they depend on runtime and not in build time. I understand your point,
>> which raises the question of why isn't CONFIG_ISA set to Y in make allyesconfig.
>>
>> Would this be possible?
> 
> It happens today, but it depends on architecture.  An allyesconfig on
> ia32 should have it set and possibly a few others.  There's no reason an
> x86-64 couldn't have it set, it's just that x86-64 was the architecture
> break where ISA was discontinued, so there's no real point building that
> configuration.
> 
> James
> 
> 

Hi James,

That makes sense.

Thanks for the information, I understand this a lot better now.
Luis
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