tree: https://github.com/hnaz/linux-mm master head: b8280145cf2a894c873fdf91fb2af474c52ac6cc commit: 1105665c1f686ecdaccb1981afea6fb27ab6ff61 [88/435] memcg, kmem: further deprecate kmem.limit_in_bytes config: arm-buildonly-randconfig-r005-20211105 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 847a6807332b13f43704327c2d30103ec0347c77) 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 # install arm cross compiling tool for clang build # apt-get install binutils-arm-linux-gnueabi # https://github.com/hnaz/linux-mm/commit/1105665c1f686ecdaccb1981afea6fb27ab6ff61 git remote add hnaz-mm https://github.com/hnaz/linux-mm git fetch --no-tags hnaz-mm master git checkout 1105665c1f686ecdaccb1981afea6fb27ab6ff61 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): >> mm/memcontrol.c:2775:13: error: unused function 'cancel_charge' [-Werror,-Wunused-function] static void cancel_charge(struct mem_cgroup *memcg, unsigned int nr_pages) ^ mm/memcontrol.c:3341:19: error: unused function 'mem_cgroup_move_swap_account' [-Werror,-Wunused-function] static inline int mem_cgroup_move_swap_account(swp_entry_t entry, ^ 2 errors generated. vim +/cancel_charge +2775 mm/memcontrol.c c5c8b16b596e15 Muchun Song 2021-06-28 2773 f0e45fb4da2974 Johannes Weiner 2020-06-03 2774 #if defined(CONFIG_MEMCG_KMEM) || defined(CONFIG_MMU) 00501b531c4723 Johannes Weiner 2014-08-08 @2775 static void cancel_charge(struct mem_cgroup *memcg, unsigned int nr_pages) a3032a2c15c696 Daisuke Nishimura 2009-12-15 2776 { ce00a967377baa Johannes Weiner 2014-09-05 2777 if (mem_cgroup_is_root(memcg)) ce00a967377baa Johannes Weiner 2014-09-05 2778 return; ce00a967377baa Johannes Weiner 2014-09-05 2779 3e32cb2e0a12b6 Johannes Weiner 2014-12-10 2780 page_counter_uncharge(&memcg->memory, nr_pages); 7941d2145abc4d Johannes Weiner 2016-01-14 2781 if (do_memsw_account()) 3e32cb2e0a12b6 Johannes Weiner 2014-12-10 2782 page_counter_uncharge(&memcg->memsw, nr_pages); d01dd17f1067ca KAMEZAWA Hiroyuki 2012-05-29 2783 } f0e45fb4da2974 Johannes Weiner 2020-06-03 2784 #endif d01dd17f1067ca KAMEZAWA Hiroyuki 2012-05-29 2785 :::::: The code at line 2775 was first introduced by commit :::::: 00501b531c4723972aa11d6d4ebcf8d6552007c8 mm: memcontrol: rewrite charge API :::::: TO: Johannes Weiner <hannes@xxxxxxxxxxx> :::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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