Hi Lin, kernel test robot noticed the following build warnings: [auto build test WARNING on bpf-next/master] url: https://github.com/intel-lab-lkp/linux/commits/Lin-Yikai/cpuidle-Implement-BPF-extensible-cpuidle-governor-class/20250901-220011 base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master patch link: https://lore.kernel.org/r/20250901135609.76590-2-yikai.lin%40vivo.com patch subject: [PATCH v2 bpf-next 1/2] cpuidle: Implement BPF extensible cpuidle governor class config: arm-randconfig-r131-20250907 (https://download.01.org/0day-ci/archive/20250907/202509071459.Gkqhd7YV-lkp@xxxxxxxxx/config) compiler: arm-linux-gnueabi-gcc (GCC) 8.5.0 reproduce: (https://download.01.org/0day-ci/archive/20250907/202509071459.Gkqhd7YV-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/202509071459.Gkqhd7YV-lkp@xxxxxxxxx/ sparse warnings: (new ones prefixed by >>) >> drivers/cpuidle/governors/ext.c:141:1: sparse: sparse: symbol 'ops_enabled_key' was not declared. Should it be static? vim +/ops_enabled_key +141 drivers/cpuidle/governors/ext.c 139 140 static DEFINE_MUTEX(ops_mutex); > 141 DEFINE_STATIC_KEY_FALSE(ops_enabled_key); 142 static atomic_t ops_enable_state_var = ATOMIC_INIT(OPS_DISABLED); 143 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
