Hi Zhen, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on mcgrof/modules-next] [also build test WARNING on linus/master v6.0-rc6 next-20220919] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Zhen-Lei/kallsyms-Optimizes-the-performance-of-lookup-symbols/20220919-231916 base: https://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux.git modules-next config: arm-nhk8815_defconfig (https://download.01.org/0day-ci/archive/20220920/202209201126.fpHaqBEx-lkp@xxxxxxxxx/config) compiler: arm-linux-gnueabi-gcc (GCC) 12.1.0 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/26fdb8f3984ffbdb57da2d1fac7e32ae418bfa96 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Zhen-Lei/kallsyms-Optimizes-the-performance-of-lookup-symbols/20220919-231916 git checkout 26fdb8f3984ffbdb57da2d1fac7e32ae418bfa96 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> kernel/kallsyms.c:196:15: warning: no previous prototype for 'kallsyms_sym_address' [-Wmissing-prototypes] 196 | unsigned long kallsyms_sym_address(int idx) | ^~~~~~~~~~~~~~~~~~~~ kernel/kallsyms.c:668:12: warning: no previous prototype for 'arch_get_kallsym' [-Wmissing-prototypes] 668 | int __weak arch_get_kallsym(unsigned int symnum, unsigned long *value, | ^~~~~~~~~~~~~~~~ vim +/kallsyms_sym_address +196 kernel/kallsyms.c 195 > 196 unsigned long kallsyms_sym_address(int idx) 197 { 198 if (!IS_ENABLED(CONFIG_KALLSYMS_BASE_RELATIVE)) 199 return kallsyms_addresses[idx]; 200 201 /* values are unsigned offsets if --absolute-percpu is not in effect */ 202 if (!IS_ENABLED(CONFIG_KALLSYMS_ABSOLUTE_PERCPU)) 203 return kallsyms_relative_base + (u32)kallsyms_offsets[idx]; 204 205 /* ...otherwise, positive offsets are absolute values */ 206 if (kallsyms_offsets[idx] >= 0) 207 return kallsyms_offsets[idx]; 208 209 /* ...and negative offsets are relative to kallsyms_relative_base - 1 */ 210 return kallsyms_relative_base - 1 - kallsyms_offsets[idx]; 211 } 212 -- 0-DAY CI Kernel Test Service https://01.org/lkp
