linux-kernel - Re: arch/powerpc/mm/book3s64/pgtable.c:174:15: error: no previous prototype for 'create_section

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Message-ID: <20201124054539.GB20421@intel.com>
Date:   Tue, 24 Nov 2020 13:45:39 +0800
From:   Philip Li <philip.li@...el.com>
To:     Dan Williams <dan.j.williams@...el.com>
Cc:     kernel test robot <lkp@...el.com>, kbuild-all@...ts.01.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Linux Memory Management List <linux-mm@...ck.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Christoph Hellwig <hch@....de>
Subject: Re: arch/powerpc/mm/book3s64/pgtable.c:174:15: error: no previous
 prototype for 'create_section_mapping'

On Mon, Nov 23, 2020 at 07:20:46PM -0800, Dan Williams wrote:
> On Mon, Nov 23, 2020 at 6:13 PM kernel test robot <lkp@...el.com> wrote:
> >
> > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> > head:   d5beb3140f91b1c8a3d41b14d729aefa4dcc58bc
> > commit: a927bd6ba952d13c52b8b385030943032f659a3e mm: fix phys_to_target_node() and memory_add_physaddr_to_nid() exports
> > date:   31 hours ago
> > config: powerpc-randconfig-r024-20201123 (attached as .config)
> > compiler: powerpc64le-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
> >         # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a927bd6ba952d13c52b8b385030943032f659a3e
> >         git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
> >         git fetch --no-tags linus master
> >         git checkout a927bd6ba952d13c52b8b385030943032f659a3e
> >         # save the attached .config to linux build tree
> >         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=powerpc
> >
> > If you fix the issue, kindly add following tag as appropriate
> > Reported-by: kernel test robot <lkp@...el.com>
> >
> > All errors (new ones prefixed by >>):
> >
> > >> arch/powerpc/mm/book3s64/pgtable.c:174:15: error: no previous prototype for 'create_section_mapping' [-Werror=missing-prototypes]
> >      174 | int __meminit create_section_mapping(unsigned long start, unsigned long end,
> >          |               ^~~~~~~~~~~~~~~~~~~~~~
> >    arch/powerpc/mm/book3s64/pgtable.c:405:6: error: no previous prototype for 'arch_report_meminfo' [-Werror=missing-prototypes]
> >      405 | void arch_report_meminfo(struct seq_file *m)
> >          |      ^~~~~~~~~~~~~~~~~~~
> >    arch/powerpc/mm/book3s64/pgtable.c:461:5: error: no previous prototype for 'pmd_move_must_withdraw' [-Werror=missing-prototypes]
> >      461 | int pmd_move_must_withdraw(struct spinlock *new_pmd_ptl,
> >          |     ^~~~~~~~~~~~~~~~~~~~~~
> >    cc1: all warnings being treated as errors
> >
> > vim +/create_section_mapping +174 arch/powerpc/mm/book3s64/pgtable.c
> 
> The whack-a-mole continues... the kbuild-robot success report I
> received gave me too much confidence.
sorry Dan, this is a newly generated randconfig, which is not in
the coverage of build success report. Sorry for the confusion.

>