Re: [PATCH v1 1/1] mm, slab: fold need_slab_obj_ext() into its only user
From: kernel test robot
Date: Thu Apr 24 2025 - 16:37:02 EST
Hi Andy,
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/Andy-Shevchenko/mm-slab-fold-need_slab_obj_ext-into-its-only-user/20250425-004842
base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link: https://lore.kernel.org/r/20250424164800.2658961-1-andriy.shevchenko%40linux.intel.com
patch subject: [PATCH v1 1/1] mm, slab: fold need_slab_obj_ext() into its only user
config: i386-buildonly-randconfig-001-20250425 (https://download.01.org/0day-ci/archive/20250425/202504250400.BLLCAX1T-lkp@xxxxxxxxx/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250425/202504250400.BLLCAX1T-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/202504250400.BLLCAX1T-lkp@xxxxxxxxx/
All errors (new ones prefixed by >>):
mm/slub.c: In function 'unaccount_slab':
>> mm/slub.c:2591:36: error: implicit declaration of function 'need_slab_obj_ext'; did you mean 'free_slab_obj_exts'? [-Werror=implicit-function-declaration]
2591 | if (memcg_kmem_online() || need_slab_obj_ext())
| ^~~~~~~~~~~~~~~~~
| free_slab_obj_exts
cc1: some warnings being treated as errors
vim +2591 mm/slub.c
0bedcc66d2a43a5 Vlastimil Babka 2023-10-03 2587
0bedcc66d2a43a5 Vlastimil Babka 2023-10-03 2588 static __always_inline void unaccount_slab(struct slab *slab, int order,
0bedcc66d2a43a5 Vlastimil Babka 2023-10-03 2589 struct kmem_cache *s)
0bedcc66d2a43a5 Vlastimil Babka 2023-10-03 2590 {
4b8736964640fe1 Suren Baghdasaryan 2024-03-21 @2591 if (memcg_kmem_online() || need_slab_obj_ext())
21c690a349baab8 Suren Baghdasaryan 2024-03-21 2592 free_slab_obj_exts(slab);
0bedcc66d2a43a5 Vlastimil Babka 2023-10-03 2593
0bedcc66d2a43a5 Vlastimil Babka 2023-10-03 2594 mod_node_page_state(slab_pgdat(slab), cache_vmstat_idx(s),
0bedcc66d2a43a5 Vlastimil Babka 2023-10-03 2595 -(PAGE_SIZE << order));
0bedcc66d2a43a5 Vlastimil Babka 2023-10-03 2596 }
0bedcc66d2a43a5 Vlastimil Babka 2023-10-03 2597
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki