[linux-next:master 7588/7828] arch/x86/include/asm/pgtable.h:888:2: error: implicit declaration of function 'native_pud_clear'

[linux-next:master 7588/7828] arch/x86/include/asm/pgtable.h:888:2: error: implicit declaration of function 'native_pud_clear'

[kbuild test robot]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   421cf055e6a2d2d91556320781175b8050da2b7c
commit: a10a17012459c6acb0fc8e394ebfb294abc051bc [7588/7828] mm, x86: add support for PUD-sized transparent hugepages
config: i386-randconfig-s1-01312322 (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        git checkout a10a17012459c6acb0fc8e394ebfb294abc051bc
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   In file included from include/linux/mm.h:68:0,
                    from include/linux/suspend.h:8,
                    from arch/x86/kernel/asm-offsets.c:12:
   arch/x86/include/asm/pgtable.h: In function 'native_local_pudp_get_and_clear':
>> arch/x86/include/asm/pgtable.h:888:2: error: implicit declaration of function 'native_pud_clear' [-Werror=implicit-function-declaration]
     native_pud_clear(pudp);
     ^~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors
   make[2]: *** [arch/x86/kernel/asm-offsets.s] Error 1
   make[2]: Target '__build' not remade because of errors.
   make[1]: *** [prepare0] Error 2
   make[1]: Target 'prepare' not remade because of errors.
   make: *** [sub-make] Error 2

vim +/native_pud_clear +888 arch/x86/include/asm/pgtable.h

   882	}
   883	
   884	static inline pud_t native_local_pudp_get_and_clear(pud_t *pudp)
   885	{
   886		pud_t res = *pudp;
   887	
 > 888		native_pud_clear(pudp);
   889		return res;
   890	}
   891	

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