Hi Tiezhu, Thank you for the patch! Yet something to improve: [auto build test ERROR on bpf-next/master] url: https://github.com/intel-lab-lkp/linux/commits/Tiezhu-Yang/libbpf-Include-linux-log2-h-to-use-is_pow_of_2/20220620-160053 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master config: s390-defconfig (https://download.01.org/0day-ci/archive/20220620/202206201942.DQpI2tgb-lkp@xxxxxxxxx/config) compiler: s390-linux-gcc (GCC) 11.3.0 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/intel-lab-lkp/linux/commit/785c0dfdcebd7deec5cfaaf7bce252c40f30a350 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Tiezhu-Yang/libbpf-Include-linux-log2-h-to-use-is_pow_of_2/20220620-160053 git checkout 785c0dfdcebd7deec5cfaaf7bce252c40f30a350 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=s390 prepare If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): scripts/genksyms/parse.y: warning: 9 shift/reduce conflicts [-Wconflicts-sr] scripts/genksyms/parse.y: warning: 5 reduce/reduce conflicts [-Wconflicts-rr] scripts/genksyms/parse.y: note: rerun with option '-Wcounterexamples' to generate conflict counterexamples linker.c: In function 'linker_sanity_check_elf': >> linker.c:722:49: error: implicit declaration of function 'is_pow_of_2'; did you mean 'is_power_of_2'? [-Werror=implicit-function-declaration] 722 | if (sec->shdr->sh_addralign && !is_pow_of_2(sec->shdr->sh_addralign)) | ^~~~~~~~~~~ | is_power_of_2 >> linker.c:722:49: error: nested extern declaration of 'is_pow_of_2' [-Werror=nested-externs] libbpf.c: In function 'adjust_ringbuf_sz': >> libbpf.c:5134:36: error: implicit declaration of function 'is_pow_of_2'; did you mean 'is_power_of_2'? [-Werror=implicit-function-declaration] 5134 | if ((sz % page_sz) == 0 && is_pow_of_2(sz / page_sz)) | ^~~~~~~~~~~ | is_power_of_2 >> libbpf.c:5134:36: error: nested extern declaration of 'is_pow_of_2' [-Werror=nested-externs] cc1: all warnings being treated as errors make[5]: *** [tools/build/Makefile.build:96: tools/bpf/resolve_btfids/libbpf/staticobjs/linker.o] Error 1 make[5]: *** Waiting for unfinished jobs.... cc1: all warnings being treated as errors make[5]: *** [tools/build/Makefile.build:96: tools/bpf/resolve_btfids/libbpf/staticobjs/libbpf.o] Error 1 make[4]: *** [Makefile:157: tools/bpf/resolve_btfids/libbpf/staticobjs/libbpf-in.o] Error 2 make[3]: *** [Makefile:55: tools/bpf/resolve_btfids//libbpf/libbpf.a] Error 2 make[2]: *** [Makefile:76: bpf/resolve_btfids] Error 2 make[1]: *** [Makefile:1344: tools/bpf/resolve_btfids] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:219: __sub-make] Error 2 make: Target 'prepare' not remade because of errors. -- 0-DAY CI Kernel Test Service https://01.org/lkp
