Re: [PATCH v1 4/9] s390/vmemmap: cleanup when vmemmap_populate() fails

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On 03.07.20 19:09, kernel test robot wrote:
> Hi David,
> 
> I love your patch! Yet something to improve:
> 
> [auto build test ERROR on s390/features]
> [also build test ERROR on next-20200703]
> [cannot apply to linux/master kvms390/next linus/master v5.8-rc3]
> [If your patch is applied to the wrong git tree, kindly drop us a note.
> And when submitting patch, we suggest to use  as documented in
> https://git-scm.com/docs/git-format-patch]
> 
> url:    https://github.com/0day-ci/linux/commits/David-Hildenbrand/s390-implement-and-optimize-vmemmap_free/20200703-214348
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git features
> config: s390-alldefconfig (attached as .config)
> compiler: s390-linux-gcc (GCC) 9.3.0
> reproduce (this is a W=1 build):
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # save the attached .config to linux build tree
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=s390 
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@xxxxxxxxx>
> 
> All error/warnings (new ones prefixed by >>):
> 
>    arch/s390/mm/vmem.c: In function 'vmemmap_populate':
>>> arch/s390/mm/vmem.c:368:3: error: implicit declaration of function 'vmemmap_free'; did you mean 'vmem_altmap_free'? [-Werror=implicit-function-declaration]
>      368 |   vmemmap_free(start, end, altmap);
>          |   ^~~~~~~~~~~~
>          |   vmem_altmap_free
>    arch/s390/mm/vmem.c: At top level:
>    arch/s390/mm/vmem.c:372:6: warning: no previous prototype for 'vmemmap_free' [-Wmissing-prototypes]
>      372 | void vmemmap_free(unsigned long start, unsigned long end,
>          |      ^~~~~~~~~~~~
>>> arch/s390/mm/vmem.c:372:6: warning: conflicting types for 'vmemmap_free'
>    arch/s390/mm/vmem.c:368:3: note: previous implicit declaration of 'vmemmap_free' was here
>      368 |   vmemmap_free(start, end, altmap);
>          |   ^~~~~~~~~~~~
>    cc1: some warnings being treated as errors

Ah, vmemmap_free() is only defined with CONFIG_MEMORY_HOTPLUG. Easy to fix.


-- 
Thanks,

David / dhildenb





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