Hi David, kernel test robot noticed the following build warnings: [auto build test WARNING on 6995e2de6891c724bfeb2db33d7b87775f913ad1] url: https://github.com/intel-lab-lkp/linux/commits/David-Hildenbrand/mm-memory_hotplug-check-for-fatal-signals-only-in-offline_pages/20230627-192444 base: 6995e2de6891c724bfeb2db33d7b87775f913ad1 patch link: https://lore.kernel.org/r/20230627112220.229240-4-david%40redhat.com patch subject: [PATCH v1 3/5] mm/memory_hotplug: make offline_and_remove_memory() timeout instead of failing on fatal signals config: x86_64-randconfig-x006-20230627 (https://download.01.org/0day-ci/archive/20230628/202306280935.dKTWlHFD-lkp@xxxxxxxxx/config) compiler: clang version 15.0.7 (https://github.com/llvm/llvm-project.git 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a) reproduce: (https://download.01.org/0day-ci/archive/20230628/202306280935.dKTWlHFD-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/202306280935.dKTWlHFD-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): >> mm/memory_hotplug.c:163:13: warning: unused variable 'mhp_offlining_timer_active' [-Wunused-variable] static bool mhp_offlining_timer_active; ^ mm/memory_hotplug.c:166:13: warning: unused function 'mhp_offline_timer_fn' [-Wunused-function] static void mhp_offline_timer_fn(struct timer_list *unused) ^ 2 warnings generated. vim +/mhp_offlining_timer_active +163 mm/memory_hotplug.c 154 155 /* 156 * Protected by the device hotplug lock: offline_and_remove_memory() 157 * will activate a timer such that offlining cannot be stuck forever. 158 * 159 * With an active timer, fatal signals will be ignored, because they can be 160 * counter-productive when dying user space triggers device unplug/driver 161 * unloading that ends up offlining+removing device memory. 162 */ > 163 static bool mhp_offlining_timer_active; 164 static atomic_t mhp_offlining_timer_expired; 165 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
