Hi Luis, kernel test robot noticed the following build warnings: [auto build test WARNING on akpm-mm/mm-everything] url: https://github.com/intel-lab-lkp/linux/commits/Luis-Chamberlain/mm-show_mem-simplify-ifdef-on-si_meminfo_node/20240314-085917 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20240314005436.2962962-3-mcgrof%40kernel.org patch subject: [PATCH 2/3] mm/compaction: add and use for_each_populated_zone_pgdat() helper config: openrisc-defconfig (https://download.01.org/0day-ci/archive/20240314/202403141931.2XJWI4fa-lkp@xxxxxxxxx/config) compiler: or1k-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240314/202403141931.2XJWI4fa-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/202403141931.2XJWI4fa-lkp@xxxxxxxxx/ All warnings (new ones prefixed by >>): mm/compaction.c: In function 'fragmentation_score_node': >> mm/compaction.c:2252:13: warning: unused variable 'zoneid' [-Wunused-variable] 2252 | int zoneid; | ^~~~~~ vim +/zoneid +2252 mm/compaction.c 2240 2241 /* 2242 * The per-node proactive (background) compaction process is started by its 2243 * corresponding kcompactd thread when the node's fragmentation score 2244 * exceeds the high threshold. The compaction process remains active till 2245 * the node's score falls below the low threshold, or one of the back-off 2246 * conditions is met. 2247 */ 2248 static unsigned int fragmentation_score_node(pg_data_t *pgdat) 2249 { 2250 unsigned int score = 0; 2251 struct zone *zone; > 2252 int zoneid; 2253 2254 for_each_populated_zone_pgdat(zone, pgdat) 2255 score += fragmentation_score_zone_weighted(zone); 2256 2257 return score; 2258 } 2259 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
