Hi Song, I love your patch! Yet something to improve: [auto build test ERROR on bpf-next/master] url: https://github.com/0day-ci/linux/commits/Song-Liu/bpf-select-proper-size-for-bpf_prog_pack/20220310-023737 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master config: arm-randconfig-c002-20220311 (https://download.01.org/0day-ci/archive/20220312/202203120545.dI2S3hTQ-lkp@xxxxxxxxx/config) compiler: arm-linux-gnueabi-gcc (GCC) 11.2.0 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://github.com/0day-ci/linux/commit/4d06f388e14c69d938cbc1e4081029c14d8bc654 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Song-Liu/bpf-select-proper-size-for-bpf_prog_pack/20220310-023737 git checkout 4d06f388e14c69d938cbc1e4081029c14d8bc654 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=arm SHELL=/bin/bash If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): kernel/bpf/core.c: In function 'select_bpf_prog_pack_size': >> kernel/bpf/core.c:846:16: error: 'PMD_SIZE' undeclared (first use in this function); did you mean 'P4D_SIZE'? 846 | size = PMD_SIZE * num_online_nodes(); | ^~~~~~~~ | P4D_SIZE kernel/bpf/core.c:846:16: note: each undeclared identifier is reported only once for each function it appears in vim +846 kernel/bpf/core.c 840 841 static size_t select_bpf_prog_pack_size(void) 842 { 843 size_t size; 844 void *ptr; 845 > 846 size = PMD_SIZE * num_online_nodes(); 847 ptr = module_alloc(size); 848 849 /* Test whether we can get huge pages. If not just use PAGE_SIZE 850 * packs. 851 */ 852 if (!ptr || !is_vm_area_hugepages(ptr)) 853 size = PAGE_SIZE; 854 855 vfree(ptr); 856 return size; 857 } 858 --- 0-DAY CI Kernel Test Service https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
