Hi Jiri, kernel test robot noticed the following build warnings: [auto build test WARNING on bpf/master] url: https://github.com/intel-lab-lkp/linux/commits/Jiri-Olsa/bpf-Fix-prog_array_map_poke_run-map-poke-update/20231204-045204 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf.git master patch link: https://lore.kernel.org/r/20231203204851.388654-2-jolsa%40kernel.org patch subject: [PATCHv3 bpf 1/2] bpf: Fix prog_array_map_poke_run map poke update config: x86_64-rhel-8.3-rust (https://download.01.org/0day-ci/archive/20231205/202312051557.5OKOsVGa-lkp@xxxxxxxxx/config) compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231205/202312051557.5OKOsVGa-lkp@xxxxxxxxx/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@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202312051557.5OKOsVGa-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> arch/x86/net/bpf_jit_comp.c:3029:6: warning: no previous prototype for function 'bpf_arch_poke_desc_update' [-Wmissing-prototypes] void bpf_arch_poke_desc_update(struct bpf_jit_poke_descriptor *poke, ^ arch/x86/net/bpf_jit_comp.c:3029:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void bpf_arch_poke_desc_update(struct bpf_jit_poke_descriptor *poke, ^ static 1 warning generated. -- >> kernel/bpf/arraymap.c:1015:13: warning: no previous prototype for function 'bpf_arch_poke_desc_update' [-Wmissing-prototypes] void __weak bpf_arch_poke_desc_update(struct bpf_jit_poke_descriptor *poke, ^ kernel/bpf/arraymap.c:1015:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void __weak bpf_arch_poke_desc_update(struct bpf_jit_poke_descriptor *poke, ^ static 1 warning generated. vim +/bpf_arch_poke_desc_update +3029 arch/x86/net/bpf_jit_comp.c 3028 > 3029 void bpf_arch_poke_desc_update(struct bpf_jit_poke_descriptor *poke, -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki