[rppt:memory-models/rm-discontig/v1 5/9] arch/arm/mm/init.c:311:39: error: 'mem_map' undeclared; did you mean 'memunmap'?

[rppt:memory-models/rm-discontig/v1 5/9] arch/arm/mm/init.c:311:39: error: 'mem_map' undeclared; did you mean 'memunmap'?

[kernel test robot]

[-- Attachment #1: Type: text/plain, Size: 2698 bytes --]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/rppt/linux.git memory-models/rm-discontig/v1
head:   bb9fe24d1b478332cc8352e9325bab67f7ee4ba4
commit: c0b561de5955275e739b8a14c06360857937efb0 [5/9] mm: remove CONFIG_DISCONTIGMEM
config: arm-pleb_defconfig (attached as .config)
compiler: arm-linux-gnueabi-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/rppt/linux.git/commit/?id=c0b561de5955275e739b8a14c06360857937efb0
        git remote add rppt https://git.kernel.org/pub/scm/linux/kernel/git/rppt/linux.git
        git fetch --no-tags rppt memory-models/rm-discontig/v1
        git checkout c0b561de5955275e739b8a14c06360857937efb0
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm 

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

All errors (new ones prefixed by >>):

   arch/arm/mm/init.c:97:13: warning: no previous prototype for 'setup_dma_zone' [-Wmissing-prototypes]
      97 | void __init setup_dma_zone(const struct machine_desc *mdesc)
         |             ^~~~~~~~~~~~~~
   arch/arm/mm/init.c: In function 'mem_init':
>> arch/arm/mm/init.c:311:39: error: 'mem_map' undeclared (first use in this function); did you mean 'memunmap'?
     311 |  set_max_mapnr(pfn_to_page(max_pfn) - mem_map);
         |                                       ^~~~~~~
         |                                       memunmap
   arch/arm/mm/init.c:311:39: note: each undeclared identifier is reported only once for each function it appears in


vim +311 arch/arm/mm/init.c

ad3c7b18c5b362 Christoph Hellwig 2019-07-23  310  
b3ba41f28f7fe1 Santosh Shilimkar 2013-11-23 @311  	set_max_mapnr(pfn_to_page(max_pfn) - mem_map);
^1da177e4c3f41 Linus Torvalds    2005-04-16  312  
^1da177e4c3f41 Linus Torvalds    2005-04-16  313  	/* this will put all unused low memory onto the freelists */
c6ffc5ca8fb311 Mike Rapoport     2018-10-30  314  	memblock_free_all();
^1da177e4c3f41 Linus Torvalds    2005-04-16  315  

:::::: The code at line 311 was first introduced by commit
:::::: b3ba41f28f7fe147c23bfadf6280b3492c9696b1 ARM: mm: Fix max_mapnr with recent max*pfn updates

:::::: TO: Santosh Shilimkar <santosh.shilimkar@ti.com>
:::::: CC: Santosh Shilimkar <santosh.shilimkar@ti.com>

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

[-- Attachment #2: config.gz --]
[-- Type: application/gzip, Size: 12439 bytes --]