tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 8433c776e1eb1371f5cd40b5fd3a61f9c7b7f3ad commit: a2d6e9c1a867bb9f13943cb8483e2ab85b630bcd [5933/6583] mm: page_ext: add an iteration API for page extensions config: i386-buildonly-randconfig-004-20250226 (https://download.01.org/0day-ci/archive/20250226/202502261733.Ma0eUGKJ-lkp@xxxxxxxxx/config) compiler: clang version 19.1.7 (https://github.com/llvm/llvm-project cd708029e0b2869e80abe31ddb175f7c35361f90) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250226/202502261733.Ma0eUGKJ-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/202502261733.Ma0eUGKJ-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): In file included from arch/x86/kernel/asm-offsets.c:14: In file included from include/linux/suspend.h:5: In file included from include/linux/swap.h:9: In file included from include/linux/memcontrol.h:21: In file included from include/linux/mm.h:8: In file included from include/linux/pgalloc_tag.h:12: >> include/linux/page_ext.h:131:20: error: call to undeclared function 'page_to_section'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 131 | iter->start_pfn = page_to_pfn(page); | ^ include/asm-generic/memory_model.h:64:21: note: expanded from macro 'page_to_pfn' 64 | #define page_to_pfn __page_to_pfn | ^ include/asm-generic/memory_model.h:47:14: note: expanded from macro '__page_to_pfn' 47 | int __sec = page_to_section(__pg); \ | ^ include/linux/page_ext.h:131:20: note: did you mean '__nr_to_section'? include/asm-generic/memory_model.h:64:21: note: expanded from macro 'page_to_pfn' 64 | #define page_to_pfn __page_to_pfn | ^ include/asm-generic/memory_model.h:47:14: note: expanded from macro '__page_to_pfn' 47 | int __sec = page_to_section(__pg); \ | ^ include/linux/mmzone.h:1907:35: note: '__nr_to_section' declared here 1907 | static inline struct mem_section *__nr_to_section(unsigned long nr) | ^ In file included from arch/x86/kernel/asm-offsets.c:14: In file included from include/linux/suspend.h:5: In file included from include/linux/swap.h:9: In file included from include/linux/memcontrol.h:21: >> include/linux/mm.h:1965:29: error: static declaration of 'page_to_section' follows non-static declaration 1965 | static inline unsigned long page_to_section(const struct page *page) | ^ include/linux/page_ext.h:131:20: note: previous implicit declaration is here 131 | iter->start_pfn = page_to_pfn(page); | ^ include/asm-generic/memory_model.h:64:21: note: expanded from macro 'page_to_pfn' 64 | #define page_to_pfn __page_to_pfn | ^ include/asm-generic/memory_model.h:47:14: note: expanded from macro '__page_to_pfn' 47 | int __sec = page_to_section(__pg); \ | ^ In file included from arch/x86/kernel/asm-offsets.c:14: In file included from include/linux/suspend.h:5: In file included from include/linux/swap.h:9: In file included from include/linux/memcontrol.h:21: In file included from include/linux/mm.h:2302: include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion] 518 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" | ~~~~~~~~~~~ ^ ~~~ 1 warning and 2 errors generated. make[3]: *** [scripts/Makefile.build:102: arch/x86/kernel/asm-offsets.s] Error 1 shuffle=1287424088 make[3]: Target 'prepare' not remade because of errors. make[2]: *** [Makefile:1264: prepare0] Error 2 shuffle=1287424088 make[2]: Target 'prepare' not remade because of errors. make[1]: *** [Makefile:251: __sub-make] Error 2 shuffle=1287424088 make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:251: __sub-make] Error 2 shuffle=1287424088 make: Target 'prepare' not remade because of errors. vim +/page_to_section +131 include/linux/page_ext.h 118 119 /** 120 * page_ext_iter_begin() - Prepare for iterating through page extensions. 121 * @iter: page extension iterator. 122 * @page: The page we're interested in. 123 * 124 * Must be called with RCU read lock taken. 125 * 126 * Return: NULL if no page_ext exists for this page. 127 */ 128 static inline struct page_ext *page_ext_iter_begin(struct page_ext_iter *iter, struct page *page) 129 { 130 iter->index = 0; > 131 iter->start_pfn = page_to_pfn(page); 132 iter->page_ext = lookup_page_ext(page); 133 134 return iter->page_ext; 135 } 136 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
