tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: ef66bf8aeb91fd331cf8f5dca8f9d7bca9ab2849 commit: 803370d3d37579e080e8c59f2360a072d0e45aff [530/10518] bpf: add a new kfunc to return current bpf_map elements count config: x86_64-randconfig-r032-20230816 (https://download.01.org/0day-ci/archive/20230817/202308170007.OzhdwITj-lkp@xxxxxxxxx/config) compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0 reproduce: (https://download.01.org/0day-ci/archive/20230817/202308170007.OzhdwITj-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/202308170007.OzhdwITj-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> kernel/bpf/map_iter.c:201:17: warning: no previous declaration for 'bpf_map_sum_elem_count' [-Wmissing-declarations] __bpf_kfunc s64 bpf_map_sum_elem_count(struct bpf_map *map) ^~~~~~~~~~~~~~~~~~~~~~ vim +/bpf_map_sum_elem_count +201 kernel/bpf/map_iter.c 196 197 __diag_push(); 198 __diag_ignore_all("-Wmissing-prototypes", 199 "Global functions as their definitions will be in vmlinux BTF"); 200 > 201 __bpf_kfunc s64 bpf_map_sum_elem_count(struct bpf_map *map) 202 { 203 s64 *pcount; 204 s64 ret = 0; 205 int cpu; 206 207 if (!map || !map->elem_count) 208 return 0; 209 210 for_each_possible_cpu(cpu) { 211 pcount = per_cpu_ptr(map->elem_count, cpu); 212 ret += READ_ONCE(*pcount); 213 } 214 return ret; 215 } 216 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
