Hi Yafang, kernel test robot noticed the following build errors: [auto build test ERROR on bpf-next/master] url: https://github.com/intel-lab-lkp/linux/commits/Yafang-Shao/bpf-Add-bits-iterator/20240218-195123 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master patch link: https://lore.kernel.org/r/20240218114818.13585-3-laoar.shao%40gmail.com patch subject: [PATCH bpf-next 2/2] selftests/bpf: Add selftest for bits iter compiler: gcc-12 (Debian 12.2.0-14) 12.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240226/202402260354.rwSw5NBc-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/202402260354.rwSw5NBc-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): >> progs/test_bits_iter_success.c:55:27: error: incomplete definition of type 'struct psi_group_cpu' 55 | psi_nr_running += groupc->tasks[NR_RUNNING]; | ~~~~~~^ progs/test_bits_iter_success.c:13:21: note: forward declaration of 'struct psi_group_cpu' 13 | extern const struct psi_group_cpu system_group_pcpu __ksym __weak; | ^ >> progs/test_bits_iter_success.c:55:35: error: use of undeclared identifier 'NR_RUNNING'; did you mean 'T_RUNNING'? 55 | psi_nr_running += groupc->tasks[NR_RUNNING]; | ^~~~~~~~~~ | T_RUNNING /tools/include/vmlinux.h:48349:3: note: 'T_RUNNING' declared here 48349 | T_RUNNING = 0, | ^ 2 errors generated. -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki