linux-kernel - Re: [PATCH v7 08/11] mm: zero reserved and unavailable struct pages

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Message-ID: <201708310652.1lgOVyko%fengguang.wu@intel.com>
Date:   Thu, 31 Aug 2017 07:12:31 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Pavel Tatashin <pasha.tatashin@...cle.com>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org,
        sparclinux@...r.kernel.org, linux-mm@...ck.org,
        linuxppc-dev@...ts.ozlabs.org, linux-s390@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, x86@...nel.org,
        kasan-dev@...glegroups.com, borntraeger@...ibm.com,
        heiko.carstens@...ibm.com, davem@...emloft.net,
        willy@...radead.org, mhocko@...nel.org, ard.biesheuvel@...aro.org,
        will.deacon@....com, catalin.marinas@....com, sam@...nborg.org,
        mgorman@...hsingularity.net, Steven.Sistare@...cle.com,
        daniel.m.jordan@...cle.com, bob.picco@...cle.com
Subject: Re: [PATCH v7 08/11] mm: zero reserved and unavailable struct pages

Hi Pavel,

[auto build test ERROR on sparc/master]
[also build test ERROR on v4.13-rc7 next-20170829]
[cannot apply to mmotm/master]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Pavel-Tatashin/complete-deferred-page-initialization/20170831-041021
base:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc.git master
config: cris-allmodconfig (attached as .config)
compiler: cris-linux-gcc (GCC) 6.2.0
reproduce:
        wget https://raw.githubusercontent.com/01org/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=cris 

All errors (new ones prefixed by >>):

   In file included from mm/page_alloc.c:18:0:
   include/linux/mm.h:1974:33: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'zero_resv_unavail'
    static inline void __paginginit zero_resv_unavail(void) {}
                                    ^~~~~~~~~~~~~~~~~
   mm/page_alloc.c: In function 'free_area_init':
>> mm/page_alloc.c:6863:2: error: implicit declaration of function 'zero_resv_unavail' [-Werror=implicit-function-declaration]
     zero_resv_unavail();
     ^~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +/zero_resv_unavail +6863 mm/page_alloc.c

  6858	
  6859	void __init free_area_init(unsigned long *zones_size)
  6860	{
  6861		free_area_init_node(0, zones_size,
  6862				__pa(PAGE_OFFSET) >> PAGE_SHIFT, NULL);
> 6863		zero_resv_unavail();
  6864	}
  6865	

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