[linux-next:master 3897/4551] arch/powerpc/mm/mem.c:91:12: warning: no previous prototype for 'create_section_mapping'

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   6dd65e60af981e77a6bc142d82138c26fb18c3e9
commit: 4301edca7073d0e53c321411404bee65dfdc0324 [3897/4551] mm-fix-phys_to_target_node-and-memory_add_physaddr_to_nid-exports-v4
config: powerpc64-randconfig-r002-20201109 (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/next/linux-next.git/commit/?id=4301edca7073d0e53c321411404bee65dfdc0324
        git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
        git fetch --no-tags linux-next master
        git checkout 4301edca7073d0e53c321411404bee65dfdc0324
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=powerpc64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

>> arch/powerpc/mm/mem.c:91:12: warning: no previous prototype for 'create_section_mapping' [-Wmissing-prototypes]
      91 | int __weak create_section_mapping(unsigned long start, unsigned long end,
         |            ^~~~~~~~~~~~~~~~~~~~~~
--
>> arch/powerpc/mm/book3s64/pgtable.c:174:15: warning: no previous prototype for 'create_section_mapping' [-Wmissing-prototypes]
     174 | int __meminit create_section_mapping(unsigned long start, unsigned long end,
         |               ^~~~~~~~~~~~~~~~~~~~~~
   arch/powerpc/mm/book3s64/pgtable.c:405:6: warning: no previous prototype for 'arch_report_meminfo' [-Wmissing-prototypes]
     405 | void arch_report_meminfo(struct seq_file *m)
         |      ^~~~~~~~~~~~~~~~~~~
   arch/powerpc/mm/book3s64/pgtable.c:461:5: warning: no previous prototype for 'pmd_move_must_withdraw' [-Wmissing-prototypes]
     461 | int pmd_move_must_withdraw(struct spinlock *new_pmd_ptl,
         |     ^~~~~~~~~~~~~~~~~~~~~~

vim +/create_section_mapping +91 arch/powerpc/mm/mem.c

bc02af93dd2bbdd Yasunori Goto          2006-06-27  90  
4e00c5affdd4b04 Logan Gunthorpe        2020-04-10 @91  int __weak create_section_mapping(unsigned long start, unsigned long end,
4e00c5affdd4b04 Logan Gunthorpe        2020-04-10  92  				  int nid, pgprot_t prot)
fecbfabe1dc9405 Benjamin Herrenschmidt 2016-07-05  93  {
fecbfabe1dc9405 Benjamin Herrenschmidt 2016-07-05  94  	return -ENODEV;
fecbfabe1dc9405 Benjamin Herrenschmidt 2016-07-05  95  }
fecbfabe1dc9405 Benjamin Herrenschmidt 2016-07-05  96  

:::::: The code at line 91 was first introduced by commit
:::::: 4e00c5affdd4b04e6392001716333971932f3d0c powerpc/mm: thread pgprot_t through create_section_mapping()

:::::: TO: Logan Gunthorpe <logang@xxxxxxxxxxxx>
:::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx

Attachment: .config.gz
Description: application/gzip


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