Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
Subject: Re: [PATCH 4/9] kconfig: include common Kconfig files from top-level
 Kconfig
From:   Randy Dunlap <rdunlap@infradead.org>
To:     Masahiro Yamada <yamada.masahiro@socionext.com>,
        Christoph Hellwig <hch@lst.de>
Cc:     Richard Weinberger <richard@nod.at>,
        Linux Kbuild mailing list <linux-kbuild@vger.kernel.org>,
        linux-um@lists.infradead.org,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
References: <20180708152004.21679-1-hch@lst.de>
 <20180708152004.21679-5-hch@lst.de>
 <CAK7LNAT5dzU-SOvqwnDs=bn3WA1_fmDj2abETmoHUdUExVF+WA@mail.gmail.com>
 <e36e6b2c-0984-199e-8c19-3ec54b31c12e@infradead.org>
 <7d4e0925-3d6b-7698-1ef3-4c66500d8507@infradead.org>
Message-ID: <f533eb02-479b-d6b2-82e3-27abb33e7ebd@infradead.org>
Date:   Mon, 16 Jul 2018 23:44:55 -0700
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101
 Thunderbird/52.9.1
MIME-Version: 1.0
In-Reply-To: <7d4e0925-3d6b-7698-1ef3-4c66500d8507@infradead.org>
Content-Type: text/plain; charset=utf-8
Content-Language: en-US
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On 07/16/2018 11:42 PM, Randy Dunlap wrote:
> On 07/16/2018 11:33 PM, Randy Dunlap wrote:
>> On 07/11/2018 05:21 AM, Masahiro Yamada wrote:
>>> 2018-07-09 0:19 GMT+09:00 Christoph Hellwig <hch@lst.de>:
>>>> Instead of duplicating the source statements in every architecture just
>>>> do it once in the toplevel Kconfig file.
>>>>
>>>> Note that with this the inclusion of arch/$(SRCARCH/Kconfig moves out of
>>>> the top-level Kconfig into arch/Kconfig so that don't violate ordering
>>>> constraits while keeping a sensible menu structure.
>>>>
>>>> Signed-off-by: Christoph Hellwig <hch@lst.de>
>>>
>>>
>>>> diff --git a/arch/sh/Kconfig b/arch/sh/Kconfig
>>>> index dd4f3d3e644f..7ab7b148181b 100644
>>>> --- a/arch/sh/Kconfig
>>>> +++ b/arch/sh/Kconfig
>>>> @@ -168,10 +168,6 @@ config PGTABLE_LEVELS
>>>>         default 3 if X2TLB
>>>>         default 2
>>>>
>>>> -source "init/Kconfig"
>>>> -
>>>> -source "kernel/Kconfig.freezer"
>>>> -
>>>>  menu "System type"
>>>>
>>>>  #
>>>> @@ -553,8 +549,6 @@ endchoice
>>>>
>>>>  endif
>>>>
>>>> -source "arch/sh/mm/Kconfig"
>>>
>>>
>>> I noticed at least sh is broken
>>> because "arch/sh/mm/Kconfig" is no longer included by anyone.
>>>
>>> I am not doing further tests.
>>>
>>
>> Hi,
>>
>> Thanks for noticing that.
>>
>> I have tested all $ARCH (except um) with "allmodconfig" and so far, arch/sh/
>> is the only one that has a problem.
>>
> 
> Well, there are 3 $ARCH-es that have an arch/$ARCH/mm/Kconfig file:
> arm, sh, and unicore32.
> 
> We can either merge those into arch/$ARCH/Kconfig or we can source
> arch/$ARCH/mm/Kconfig for all $ARCH (where most of these files will be
> empty).
> 
> Christoph, thoughts/ideas?
> 

The first option (merge into arch/$ARCH/Kconfig) is not a good option.
Some of these mm/Kconfig files are Large, so the second option is the only
one that makes sense to me.


> 
>>
>>>
>>> Please test *ALL* architectures.
>>>
>>> If possible, matrix tests (arch, config-target), where
>>> arch = arm, arm64, ...
>>> config-target = allyesconfig, allnoconfig, alldefconfig, ...
>>>
>>>
>>> Note:
>>> scripts/diffconf is helpful.
>>>
>>
>>
> 
> 


-- 
~Randy