Hi "Aneesh, I love your patch! Yet something to improve: [auto build test ERROR on akpm-mm/mm-everything] url: https://github.com/intel-lab-lkp/linux/commits/Aneesh-Kumar-K-V/mm-demotion-Memory-tiers-and-demotion/20220720-110356 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything config: arm64-randconfig-r025-20220718 (https://download.01.org/0day-ci/archive/20220721/202207210723.HeaXhM1j-lkp@xxxxxxxxx/config) compiler: aarch64-linux-gcc (GCC) 12.1.0 reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://github.com/intel-lab-lkp/linux/commit/b5fc1c467550e9f07b8f128b554a7d68e13628ff git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Aneesh-Kumar-K-V/mm-demotion-Memory-tiers-and-demotion/20220720-110356 git checkout b5fc1c467550e9f07b8f128b554a7d68e13628ff # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): mm/memory-tiers.c: In function 'migrate_on_reclaim_init': >> mm/memory-tiers.c:349:17: error: 'node_demotion' undeclared (first use in this function) 349 | node_demotion = kcalloc(MAX_NUMNODES, sizeof(struct demotion_nodes), | ^~~~~~~~~~~~~ mm/memory-tiers.c:349:17: note: each undeclared identifier is reported only once for each function it appears in vim +/node_demotion +349 mm/memory-tiers.c 345 346 static void __init migrate_on_reclaim_init(void) 347 { 348 if (IS_ENABLED(CONFIG_MIGRATION)) { > 349 node_demotion = kcalloc(MAX_NUMNODES, sizeof(struct demotion_nodes), 350 GFP_KERNEL); 351 WARN_ON(!node_demotion); 352 } 353 hotplug_memory_notifier(migrate_on_reclaim_callback, MEMTIER_HOTPLUG_PRIO); 354 } 355 -- 0-DAY CI Kernel Test Service https://01.org/lkp
