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

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Message-ID: <87zhr9kza2.fsf@concordia.ellerman.id.au>
Date:   Wed, 06 Feb 2019 21:05:25 +1100
From:   Michael Ellerman <mpe@...erman.id.au>
To:     Randy Dunlap <rdunlap@...radead.org>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        linux-kernel@...r.kernel.org
Subject: Re: Build regressions/improvements in v5.0-rc5

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 :/

cheers