tree:   https://github.com/rgushchin/linux.git fix_vmstats
head:   4ec858b5201ae067607e82706b36588631c1b990
commit: 8abab7c3016f03edee681cd2a8231c0a4f567ec9 [210/221] mm: treewide: clarify pgtable_page_{ctor,dtor}() naming
config: microblaze-mmu_defconfig (attached as .config)
compiler: microblaze-linux-gcc (GCC) 7.4.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 8abab7c3016f03edee681cd2a8231c0a4f567ec9
        # save the attached .config to linux build tree
        GCC_VERSION=7.4.0 make.cross ARCH=microblaze 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   In file included from arch/microblaze/kernel/process.c:21:0:
   arch/microblaze/include/asm/pgalloc.h: In function 'pte_alloc_one':
>> arch/microblaze/include/asm/pgalloc.h:63:7: error: implicit declaration of function 'pgtable_page_ctor'; did you mean 'pgtable_pmd_page_ctor'? [-Werror=implicit-function-declaration]
     if (!pgtable_page_ctor(ptepage)) {
          ^~~~~~~~~~~~~~~~~
          pgtable_pmd_page_ctor
   cc1: some warnings being treated as errors

vim +63 arch/microblaze/include/asm/pgalloc.h

1f84e1ea0e87ad Michal Simek       2009-05-26  59  
1f84e1ea0e87ad Michal Simek       2009-05-26  60  	ptepage = alloc_pages(flags, 0);
8abe73465660f1 Kirill A. Shutemov 2013-11-14  61  	if (!ptepage)
8abe73465660f1 Kirill A. Shutemov 2013-11-14  62  		return NULL;
8abe73465660f1 Kirill A. Shutemov 2013-11-14 @63  	if (!pgtable_page_ctor(ptepage)) {
8abe73465660f1 Kirill A. Shutemov 2013-11-14  64  		__free_page(ptepage);
8abe73465660f1 Kirill A. Shutemov 2013-11-14  65  		return NULL;
8abe73465660f1 Kirill A. Shutemov 2013-11-14  66  	}
1f84e1ea0e87ad Michal Simek       2009-05-26  67  	return ptepage;
1f84e1ea0e87ad Michal Simek       2009-05-26  68  }
1f84e1ea0e87ad Michal Simek       2009-05-26  69  

:::::: The code at line 63 was first introduced by commit
:::::: 8abe73465660f12dee03871f681175f4dae62e7f microblaze: add missing pgtable_page_ctor/dtor calls

:::::: TO: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
:::::: CC: Linus Torvalds <torvalds@linux-foundation.org>

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