linux-kernel - Re: Build regressions/improvements in v5.0-rc5

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Date:   Wed, 6 Feb 2019 12:57:40 -0800
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Michael Ellerman <mpe@...erman.id.au>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        linux-kernel@...r.kernel.org
Subject: Re: Build regressions/improvements in v5.0-rc5

On 2/6/19 2:05 AM, Michael Ellerman wrote:
> Randy Dunlap <rdunlap@...radead.org> writes:
>> On 2/4/19 9:46 AM, Randy Dunlap wrote:
>>> On 2/4/19 5:42 AM, Geert Uytterhoeven wrote:
>>>> Below is the list of build error/warning regressions/improvements in
>>>> v5.0-rc5[1] compared to v4.20[2].
>>>>
>>>> Summarized:
>>>>   - build errors: +2/-4
>>>>   - build warnings: +113/-14843
>>>>
>>>> JFYI, when comparing v5.0-rc5[1] to v5.0-rc4[3], the summaries are:
>>>>   - build errors: +0/-0
>>>>   - build warnings: +56/-59
>>>>
>>>> Note that there may be false regressions, as some logs are incomplete.
>>>> Still, they're build errors/warnings.
>>>>
>>>> Happy fixing! ;-)
>>>>
>>>> Thanks to the linux-next team for providing the build service.
>>>>
>>>> [1] http://kisskb.ellerman.id.au/kisskb/branch/linus/head/8834f5600cf3c8db365e18a3d5cac2c2780c81e5/ (238 out of 240 configs)
>>>> [2] http://kisskb.ellerman.id.au/kisskb/branch/linus/head/8fe28cb58bcb235034b64cbbb7550a8a43fd88be/ (all 240 configs)
>>>> [3] http://kisskb.ellerman.id.au/kisskb/branch/linus/head/f17b5f06cb92ef2250513a1e154c47b78df07d40/ (238 out of 240 configs)
>>>>
>>>>
>>>>
>>>> *** WARNINGS ***
>>>>
>>>> 113 warning regressions:
>>>
>>>>   + warning: unmet direct dependencies detected for PPC4xx_PCI_EXPRESS:  => N/A
>>>
>>> Hi Geert,
>>>
>>> I am trying to find the above warning (needle) in the haystack.
>>> Can you please direct me to which config/build it is in?
>>>
>>> Is there a good way for me to find it?
>>>
>>> thanks.
>>>
>>
>> Working backwards, it probably comes from this:
>>
>> config CURRITUCK
>> 	bool "IBM Currituck (476fpe) Support"
>> 	depends on PPC_47x
>> 	select SWIOTLB
>> 	select 476FPE
>> 	select PPC4xx_PCI_EXPRESS
>>
>> This is the only similar Kconfig segment that does not select FORCE_PCI
>> but PPC4xx_PCI_EXPRESS depends on PCI but
>> # CONFIG_PCI is not set
>>
>> This could be related to a recent series of patches that allows ACPI to
>> be built without having PCI enabled.
>>
>> Michael?
> 
> There isn't really an easy way to do it sorry.
> 
> If you download the page for the revision:
>   http://kisskb.ellerman.id.au/kisskb/branch/linus/head/8834f5600cf3c8db365e18a3d5cac2c2780c81e5/
> 
> With a lot of grep/sed/awk you can get a list of the URLs for all the
> builds eg. one would be:
> 
>   http://kisskb.ellerman.id.au/kisskb/buildresult/13676551/
> 
> And then you can just tack on "log/" to get:
> 
>   http://kisskb.ellerman.id.au/kisskb/buildresult/13676551/log/
> 
> Which you can wget and grep.
> 
> But that's all a bit of a pain.
> 
> I have on my todo list to add json formatted build results and revision
> pages, which would make it quite a bit simpler. But of course I haven't
> had time to do it yet :/

No problem.

However, I was trying to ask you about the kconfig problem above:

>>>>   + warning: unmet direct dependencies detected for PPC4xx_PCI_EXPRESS

and not the "search the build results" problem.  ;)


-- 
~Randy