Re: [RFC PATCH v3 4/5] mm: thp: add bpf thp struct ops

[kernel test robot <lkp@intel.com>]

Hi Yafang,

[This is a private test report for your RFC patch.]
kernel test robot noticed the following build errors:

[auto build test ERROR on akpm-mm/mm-everything]

url:    https://github.com/intel-lab-lkp/linux/commits/Yafang-Shao/mm-thp-use-__thp_vma_allowable_orders-in-khugepaged_enter_vma/20250608-153842
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/20250608073516.22415-5-laoar.shao%40gmail.com
patch subject: [RFC PATCH v3 4/5] mm: thp: add bpf thp struct ops
config: x86_64-buildonly-randconfig-004-20250608 (https://download.01.org/0day-ci/archive/20250608/202506081759.1hhWfDgL-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250608/202506081759.1hhWfDgL-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202506081759.1hhWfDgL-lkp@intel.com/

All errors (new ones prefixed by >>):

   ld: mm/memory.o: in function `thp_vma_allowable_orders.constprop.0':
>> memory.c:(.text+0x186b): undefined reference to `bpf_thp_allocator'
   ld: mm/huge_memory.o: in function `vma_thp_gfp_mask':
>> huge_memory.c:(.text+0x46fd): undefined reference to `bpf_thp_gfp_mask'
   ld: mm/khugepaged.o: in function `thp_vma_allowable_orders.constprop.0':
>> khugepaged.c:(.text+0x2a98): undefined reference to `bpf_thp_allocator'
   ld: mm/khugepaged.o: in function `khugepaged_enter_vma':
   khugepaged.c:(.text+0x5228): undefined reference to `bpf_thp_allocator'
   ld: fs/proc/task_mmu.o: in function `show_smap':
>> task_mmu.c:(.text+0x2ce8): undefined reference to `bpf_thp_allocator'

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki