[powerpc:next-test 84/129] arch/powerpc/mm/init_64.c:477:45: error: 'SECTION_SIZE_BITS' undeclared

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git next-test
head:   c37b6908f7b2bd24dcaaf14a180e28c9132b9c58
commit: 4d15721177d539d743fcf31d7bb376fb3b81aeb6 [84/129] powerpc/mm: Cleanup memory block size probing
config: powerpc64-randconfig-r021-20230827 (https://download.01.org/0day-ci/archive/20230827/202308272310.O7VMTwkZ-lkp@intel.com/config)
compiler: powerpc64-linux-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20230827/202308272310.O7VMTwkZ-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/202308272310.O7VMTwkZ-lkp@intel.com/

All errors (new ones prefixed by >>):

   arch/powerpc/mm/init_64.c: In function 'update_memory_block_size':
>> arch/powerpc/mm/init_64.c:477:45: error: 'SECTION_SIZE_BITS' undeclared (first use in this function)
     477 |         unsigned long section_size = 1UL << SECTION_SIZE_BITS;
         |                                             ^~~~~~~~~~~~~~~~~
   arch/powerpc/mm/init_64.c:477:45: note: each undeclared identifier is reported only once for each function it appears in
   In file included from arch/powerpc/mm/init_64.c:43:
   arch/powerpc/mm/init_64.c: In function 'probe_memory_block_size':
>> include/linux/memory.h:23:43: error: 'SECTION_SIZE_BITS' undeclared (first use in this function)
      23 | #define MIN_MEMORY_BLOCK_SIZE     (1UL << SECTION_SIZE_BITS)
         |                                           ^~~~~~~~~~~~~~~~~
   arch/powerpc/mm/init_64.c:510:39: note: in expansion of macro 'MIN_MEMORY_BLOCK_SIZE'
     510 |                         *block_size = MIN_MEMORY_BLOCK_SIZE;
         |                                       ^~~~~~~~~~~~~~~~~~~~~


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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