Hi Barry, kernel test robot noticed the following build warnings: [auto build test WARNING on akpm-mm/mm-everything] url: https://github.com/intel-lab-lkp/linux/commits/Barry-Song/mm-swap-introduce-swapcache_prepare_nr-and-swapcache_clear_nr-for-large-folios-swap-in/20240726-181412 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20240726094618.401593-5-21cnbao%40gmail.com patch subject: [PATCH v5 4/4] mm: Introduce per-thpsize swapin control policy config: x86_64-randconfig-121-20240727 (https://download.01.org/0day-ci/archive/20240727/202407271351.ffZPMT6W-lkp@xxxxxxxxx/config) compiler: gcc-11 (Ubuntu 11.4.0-4ubuntu1) 11.4.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240727/202407271351.ffZPMT6W-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/202407271351.ffZPMT6W-lkp@xxxxxxxxx/ sparse warnings: (new ones prefixed by >>) >> mm/huge_memory.c:83:15: sparse: sparse: symbol 'huge_anon_orders_swapin_always' was not declared. Should it be static? mm/huge_memory.c: note: in included file (through include/linux/smp.h, include/linux/lockdep.h, include/linux/spinlock.h, ...): include/linux/list.h:83:21: sparse: sparse: self-comparison always evaluates to true mm/huge_memory.c: note: in included file (through include/linux/mmzone.h, include/linux/gfp.h, include/linux/mm.h): include/linux/page-flags.h:235:46: sparse: sparse: self-comparison always evaluates to false include/linux/page-flags.h:235:46: sparse: sparse: self-comparison always evaluates to false mm/huge_memory.c:1867:20: sparse: sparse: context imbalance in 'madvise_free_huge_pmd' - unexpected unlock include/linux/page-flags.h:235:46: sparse: sparse: self-comparison always evaluates to false mm/huge_memory.c:1905:28: sparse: sparse: context imbalance in 'zap_huge_pmd' - unexpected unlock mm/huge_memory.c:2016:28: sparse: sparse: context imbalance in 'move_huge_pmd' - unexpected unlock mm/huge_memory.c:2156:20: sparse: sparse: context imbalance in 'change_huge_pmd' - unexpected unlock mm/huge_memory.c:2306:12: sparse: sparse: context imbalance in '__pmd_trans_huge_lock' - wrong count at exit mm/huge_memory.c:2323:12: sparse: sparse: context imbalance in '__pud_trans_huge_lock' - wrong count at exit mm/huge_memory.c:2347:28: sparse: sparse: context imbalance in 'zap_huge_pud' - unexpected unlock mm/huge_memory.c:2426:18: sparse: sparse: context imbalance in '__split_huge_zero_page_pmd' - unexpected unlock mm/huge_memory.c:2640:18: sparse: sparse: context imbalance in '__split_huge_pmd_locked' - unexpected unlock include/linux/page-flags.h:235:46: sparse: sparse: self-comparison always evaluates to false mm/huge_memory.c: note: in included file (through include/linux/smp.h, include/linux/lockdep.h, include/linux/spinlock.h, ...): include/linux/list.h:83:21: sparse: sparse: self-comparison always evaluates to true include/linux/list.h:83:21: sparse: sparse: self-comparison always evaluates to true mm/huge_memory.c: note: in included file (through include/linux/mmzone.h, include/linux/gfp.h, include/linux/mm.h): include/linux/page-flags.h:235:46: sparse: sparse: self-comparison always evaluates to false mm/huge_memory.c:3031:30: sparse: sparse: context imbalance in '__split_huge_page' - unexpected unlock mm/huge_memory.c:3306:17: sparse: sparse: context imbalance in 'split_huge_page_to_list_to_order' - different lock contexts for basic block mm/huge_memory.c: note: in included file (through include/linux/smp.h, include/linux/lockdep.h, include/linux/spinlock.h, ...): include/linux/list.h:83:21: sparse: sparse: self-comparison always evaluates to true mm/huge_memory.c: note: in included file (through include/linux/mmzone.h, include/linux/gfp.h, include/linux/mm.h): include/linux/page-flags.h:235:46: sparse: sparse: self-comparison always evaluates to false mm/huge_memory.c: note: in included file (through include/linux/smp.h, include/linux/lockdep.h, include/linux/spinlock.h, ...): include/linux/list.h:83:21: sparse: sparse: self-comparison always evaluates to true mm/huge_memory.c: note: in included file (through include/linux/mmzone.h, include/linux/gfp.h, include/linux/mm.h): include/linux/page-flags.h:235:46: sparse: sparse: self-comparison always evaluates to false include/linux/page-flags.h:235:46: sparse: sparse: self-comparison always evaluates to false vim +/huge_anon_orders_swapin_always +83 mm/huge_memory.c 51 52 /* 53 * By default, transparent hugepage support is disabled in order to avoid 54 * risking an increased memory footprint for applications that are not 55 * guaranteed to benefit from it. When transparent hugepage support is 56 * enabled, it is for all mappings, and khugepaged scans all mappings. 57 * Defrag is invoked by khugepaged hugepage allocations and by page faults 58 * for all hugepage allocations. 59 */ 60 unsigned long transparent_hugepage_flags __read_mostly = 61 #ifdef CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS 62 (1<<TRANSPARENT_HUGEPAGE_FLAG)| 63 #endif 64 #ifdef CONFIG_TRANSPARENT_HUGEPAGE_MADVISE 65 (1<<TRANSPARENT_HUGEPAGE_REQ_MADV_FLAG)| 66 #endif 67 (1<<TRANSPARENT_HUGEPAGE_DEFRAG_REQ_MADV_FLAG)| 68 (1<<TRANSPARENT_HUGEPAGE_DEFRAG_KHUGEPAGED_FLAG)| 69 (1<<TRANSPARENT_HUGEPAGE_USE_ZERO_PAGE_FLAG); 70 71 static struct shrinker *deferred_split_shrinker; 72 static unsigned long deferred_split_count(struct shrinker *shrink, 73 struct shrink_control *sc); 74 static unsigned long deferred_split_scan(struct shrinker *shrink, 75 struct shrink_control *sc); 76 77 static atomic_t huge_zero_refcount; 78 struct folio *huge_zero_folio __read_mostly; 79 unsigned long huge_zero_pfn __read_mostly = ~0UL; 80 unsigned long huge_anon_orders_always __read_mostly; 81 unsigned long huge_anon_orders_madvise __read_mostly; 82 unsigned long huge_anon_orders_inherit __read_mostly; > 83 unsigned long huge_anon_orders_swapin_always __read_mostly; 84 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
