tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 661e504db04c6b7278737ee3a9116738536b4ed4 commit: b4601d096aac8ed26afa88ef8b249975b0530ca1 mm/slab: fix 'variable obj_exts set but not used' warning date: 10 days ago config: x86_64-sof-customedconfig-amd-defconfig (https://download.01.org/0day-ci/archive/20240705/202407050845.zNONqauD-lkp@xxxxxxxxx/config) compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240705/202407050845.zNONqauD-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/202407050845.zNONqauD-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): >> mm/slub.c:2077:1: error: unused function 'prepare_slab_obj_exts_hook' [-Werror,-Wunused-function] 2077 | prepare_slab_obj_exts_hook(struct kmem_cache *s, gfp_t flags, void *p) | ^~~~~~~~~~~~~~~~~~~~~~~~~~ 1 error generated. vim +/prepare_slab_obj_exts_hook +2077 mm/slub.c 0bedcc66d2a43a Vlastimil Babka 2023-10-03 2075 4b8736964640fe Suren Baghdasaryan 2024-03-21 2076 static inline struct slabobj_ext * 4b8736964640fe Suren Baghdasaryan 2024-03-21 @2077 prepare_slab_obj_exts_hook(struct kmem_cache *s, gfp_t flags, void *p) 3450a0e5a6fc4c Vlastimil Babka 2023-11-13 2078 { 4b8736964640fe Suren Baghdasaryan 2024-03-21 2079 return NULL; 4b8736964640fe Suren Baghdasaryan 2024-03-21 2080 } 3450a0e5a6fc4c Vlastimil Babka 2023-11-13 2081 :::::: The code at line 2077 was first introduced by commit :::::: 4b8736964640fe160724e7135dc62883bddcdace mm/slab: add allocation accounting into slab allocation and free paths :::::: TO: Suren Baghdasaryan <surenb@xxxxxxxxxx> :::::: CC: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
