Hi hezhongkun, Thank you for the patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on v5.18 next-20220524] [cannot apply to akpm-mm/mm-everything] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/intel-lab-lkp/linux/commits/hezhongkun/mm-memcontrol-add-the-mempolicy-interface-for-cgroup-v2/20220524-183922 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 143a6252e1b8ab424b4b293512a97cca7295c182 config: x86_64-defconfig (https://download.01.org/0day-ci/archive/20220524/202205242108.pqUxw2OF-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.3.0-1) 11.3.0 reproduce (this is a W=1 build): # https://github.com/intel-lab-lkp/linux/commit/6adb0a02c27c8811bee9783451ee25155baf490e git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review hezhongkun/mm-memcontrol-add-the-mempolicy-interface-for-cgroup-v2/20220524-183922 git checkout 6adb0a02c27c8811bee9783451ee25155baf490e # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All error/warnings (new ones prefixed by >>): >> mm/mempolicy.c:179:19: warning: no previous prototype for 'get_cgrp_or_task_policy' [-Wmissing-prototypes] 179 | struct mempolicy *get_cgrp_or_task_policy(struct task_struct *p) | ^~~~~~~~~~~~~~~~~~~~~~~ mm/mempolicy.c: In function 'get_cgrp_or_task_policy': >> mm/mempolicy.c:182:36: error: implicit declaration of function 'mem_cgroup_from_task'; did you mean 'perf_cgroup_from_task'? [-Werror=implicit-function-declaration] 182 | struct mem_cgroup *memcg = mem_cgroup_from_task(p); | ^~~~~~~~~~~~~~~~~~~~ | perf_cgroup_from_task >> mm/mempolicy.c:182:36: warning: initialization of 'struct mem_cgroup *' from 'int' makes pointer from integer without a cast [-Wint-conversion] >> mm/mempolicy.c:184:30: error: invalid use of undefined type 'struct mem_cgroup' 184 | pol = (memcg && memcg->mempolicy) ? memcg->mempolicy : get_task_policy(p); | ^~ mm/mempolicy.c:184:50: error: invalid use of undefined type 'struct mem_cgroup' 184 | pol = (memcg && memcg->mempolicy) ? memcg->mempolicy : get_task_policy(p); | ^~ mm/mempolicy.c: In function 'get_cgrp_or_vma_policy': mm/mempolicy.c:1799:36: warning: initialization of 'struct mem_cgroup *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 1799 | struct mem_cgroup *memcg = mem_cgroup_from_task(current); | ^~~~~~~~~~~~~~~~~~~~ mm/mempolicy.c:1801:30: error: invalid use of undefined type 'struct mem_cgroup' 1801 | pol = (memcg && memcg->mempolicy) ? memcg->mempolicy : get_vma_policy(vma, addr); | ^~ mm/mempolicy.c:1801:50: error: invalid use of undefined type 'struct mem_cgroup' 1801 | pol = (memcg && memcg->mempolicy) ? memcg->mempolicy : get_vma_policy(vma, addr); | ^~ cc1: some warnings being treated as errors vim +182 mm/mempolicy.c 178 > 179 struct mempolicy *get_cgrp_or_task_policy(struct task_struct *p) 180 { 181 struct mempolicy *pol; > 182 struct mem_cgroup *memcg = mem_cgroup_from_task(p); 183 > 184 pol = (memcg && memcg->mempolicy) ? memcg->mempolicy : get_task_policy(p); 185 return pol; 186 } 187 -- 0-DAY CI Kernel Test Service https://01.org/lkp
