Messages in this thread | | | Date | Mon, 21 Mar 2022 23:35:55 +0800 | From | kernel test robot <> | Subject | [ammarfaizi2-block:bpf/bpf-next/master 251/258] kernel/bpf/core.c:847:9: error: use of undeclared identifier 'PMD_SIZE' |
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tree: https://github.com/ammarfaizi2/linux-block bpf/bpf-next/master head: 7ada3787e91c89b0aa7abf47682e8e587b855c13 commit: ef078600eec20f20eb7833cf597d4a5edf2953c1 [251/258] bpf: Select proper size for bpf_prog_pack config: arm-randconfig-c002-20220321 (https://download.01.org/0day-ci/archive/20220321/202203212309.ifp4edvz-lkp@intel.com/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 85e9b2687a13d1908aa86d1b89c5ce398a06cd39) 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 # install arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi # https://github.com/ammarfaizi2/linux-block/commit/ef078600eec20f20eb7833cf597d4a5edf2953c1 git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block git fetch --no-tags ammarfaizi2-block bpf/bpf-next/master git checkout ef078600eec20f20eb7833cf597d4a5edf2953c1 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 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@intel.com>
All errors (new ones prefixed by >>):
>> kernel/bpf/core.c:847:9: error: use of undeclared identifier 'PMD_SIZE' size = PMD_SIZE * num_online_nodes(); ^ kernel/bpf/core.c:1629:12: warning: no previous prototype for function 'bpf_probe_read_kernel' [-Wmissing-prototypes] u64 __weak bpf_probe_read_kernel(void *dst, u32 size, const void *unsafe_ptr) ^ kernel/bpf/core.c:1629:1: note: declare 'static' if the function is not intended to be used outside of this translation unit u64 __weak bpf_probe_read_kernel(void *dst, u32 size, const void *unsafe_ptr) ^ static 1 warning and 1 error generated.
vim +/PMD_SIZE +847 kernel/bpf/core.c
841 842 static size_t select_bpf_prog_pack_size(void) 843 { 844 size_t size; 845 void *ptr; 846 > 847 size = PMD_SIZE * num_online_nodes(); 848 ptr = module_alloc(size); 849 850 /* Test whether we can get huge pages. If not just use PAGE_SIZE 851 * packs. 852 */ 853 if (!ptr || !is_vm_area_hugepages(ptr)) 854 size = PAGE_SIZE; 855 856 vfree(ptr); 857 return size; 858 } 859
-- 0-DAY CI Kernel Test Service https://01.org/lkp
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