Hi Peng, kernel test robot noticed the following build errors: [auto build test ERROR on akpm-mm/mm-everything] url: https://github.com/intel-lab-lkp/linux/commits/Peng-Zhang/mm-memcg-remove-return-value-of-mem_cgroup_scan_tasks/20230616-102145 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20230616021955.872413-1-zhangpeng362%40huawei.com patch subject: [PATCH] mm/memcg: remove return value of mem_cgroup_scan_tasks() config: x86_64-randconfig-r005-20230616 (https://download.01.org/0day-ci/archive/20230616/202306161306.9YKbncNT-lkp@xxxxxxxxx/config) compiler: clang version 15.0.7 (https://github.com/llvm/llvm-project.git 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a) reproduce (this is a W=1 build): mkdir -p ~/bin wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git remote add akpm-mm https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git git fetch akpm-mm mm-everything git checkout akpm-mm/mm-everything b4 shazam https://lore.kernel.org/r/20230616021955.872413-1-zhangpeng362@xxxxxxxxxx # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=x86_64 prepare 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/202306161306.9YKbncNT-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): In file included from arch/x86/kernel/asm-offsets.c:14: In file included from include/linux/suspend.h:5: In file included from include/linux/swap.h:9: >> include/linux/memcontrol.h:1370:2: error: void function 'mem_cgroup_scan_tasks' should not return a value [-Wreturn-type] return 0; ^ ~ 1 error generated. make[2]: *** [scripts/Makefile.build:114: arch/x86/kernel/asm-offsets.s] Error 1 shuffle=3878817758 make[2]: Target 'prepare' not remade because of errors. make[1]: *** [Makefile:1287: prepare0] Error 2 shuffle=3878817758 make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:226: __sub-make] Error 2 shuffle=3878817758 make: Target 'prepare' not remade because of errors. vim +/mem_cgroup_scan_tasks +1370 include/linux/memcontrol.h 5660048ccac873 Johannes Weiner 2012-01-12 1366 5044a2e0ddbf82 ZhangPeng 2023-06-16 1367 static inline void mem_cgroup_scan_tasks(struct mem_cgroup *memcg, 7c5f64f84483bd Vladimir Davydov 2016-10-07 1368 int (*fn)(struct task_struct *, void *), void *arg) 7c5f64f84483bd Vladimir Davydov 2016-10-07 1369 { 7c5f64f84483bd Vladimir Davydov 2016-10-07 @1370 return 0; 7c5f64f84483bd Vladimir Davydov 2016-10-07 1371 } 7c5f64f84483bd Vladimir Davydov 2016-10-07 1372 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
