Re: mmotm 2020-07-27-18-18 uploaded (mm/page_alloc.c)

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On 7/28/20 6:44 PM, Andrew Morton wrote:
> On Tue, 28 Jul 2020 15:39:21 -0700 Randy Dunlap <rdunlap@xxxxxxxxxxxxx> wrote:
> 
>> On 7/28/20 2:55 PM, Andrew Morton wrote:
>>> On Tue, 28 Jul 2020 05:33:58 -0700 Randy Dunlap <rdunlap@xxxxxxxxxxxxx> wrote:
>>>
>>>> On 7/27/20 6:19 PM, Andrew Morton wrote:
>>>>> The mm-of-the-moment snapshot 2020-07-27-18-18 has been uploaded to
>>>>>
>>>>>    http://www.ozlabs.org/~akpm/mmotm/
>>
>>
>>>> on x86_64:
>>>>
>>>> ../mm/page_alloc.c:8355:48: warning: ‘struct compact_control’ declared inside parameter list will not be visible outside of this definition or declaration
>>>>  static int __alloc_contig_migrate_range(struct compact_control *cc,
>>>>                                                 ^~~~~~~~~~~~~~~
>>>
>>> As is usually the case with your reports, I can't figure out how to
>>> reproduce it.  I copy then .config, run `make oldconfig' (need to hit
>>> enter a zillion times because the .config is whacky) then the build
>>> succeeds.  What's the secret?
>>
>> I was not aware that there was a problem. cp .config and make oldconfig
>> should be sufficient -- and I don't understand why you would need to hit
>> enter many times.
>>
>> I repeated this on my system without having to answer any oldconfig prompts
>> and still got build errors.
>>
>> There is no secret that I know of, but it would be good to get to the
>> bottom of this problem.
> 
> Well the first thing I hit was
> 
> Support for big SMP systems with more than 8 CPUs (X86_BIGSMP) [N/y/?] (NEW) 
> 
> and your .config doesn't mention that.

It's an x86_32 symbol and my config was for x86_64.


> make mrproper
> cp ~/config-randy .config
> make oldconfig

make ARCH=x86_64 oldconfig

HTH.
-- 
~Randy






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