[powerpc:next 84/128] arch/powerpc/mm/init_64.c:477:38: error: use of undeclared identifier 'SECTION_SIZE_BITS'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next
head:   b9bbbf4979073d5536b7650decd37fcb901e6556
commit: 4d15721177d539d743fcf31d7bb376fb3b81aeb6 [84/128] powerpc/mm: Cleanup memory block size probing
config: powerpc64-randconfig-r005-20230825 (https://download.01.org/0day-ci/archive/20230825/202308251532.k9PpWEAD-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
reproduce: (https://download.01.org/0day-ci/archive/20230825/202308251532.k9PpWEAD-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202308251532.k9PpWEAD-lkp@intel.com/

All errors (new ones prefixed by >>):

>> arch/powerpc/mm/init_64.c:477:38: error: use of undeclared identifier 'SECTION_SIZE_BITS'
     477 |         unsigned long section_size = 1UL << SECTION_SIZE_BITS;
         |                                             ^
   arch/powerpc/mm/init_64.c:510:18: error: use of undeclared identifier 'SECTION_SIZE_BITS'
     510 |                         *block_size = MIN_MEMORY_BLOCK_SIZE;
         |                                       ^
   include/linux/memory.h:23:43: note: expanded from macro 'MIN_MEMORY_BLOCK_SIZE'
      23 | #define MIN_MEMORY_BLOCK_SIZE     (1UL << SECTION_SIZE_BITS)
         |                                           ^
   2 errors generated.


vim +/SECTION_SIZE_BITS +477 arch/powerpc/mm/init_64.c

   474	
   475	static void update_memory_block_size(unsigned long *block_size, unsigned long mem_size)
   476	{
 > 477		unsigned long section_size = 1UL << SECTION_SIZE_BITS;
   478	
   479		for (; *block_size > section_size; *block_size >>= 2) {
   480	
   481			if ((mem_size & *block_size) == 0)
   482				break;
   483		}
   484	}
   485	

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