Hi Sourav, kernel test robot noticed the following build errors: [auto build test ERROR on akpm-mm/mm-everything] [also build test ERROR on driver-core/driver-core-testing driver-core/driver-core-next driver-core/driver-core-linus linus/master v6.6-rc1 next-20230913] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Sourav-Panda/mm-report-per-page-metadata-information/20230914-013201 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20230913173000.4016218-2-souravpanda%40google.com patch subject: [PATCH v1 1/1] mm: report per-page metadata information config: um-defconfig (https://download.01.org/0day-ci/archive/20230914/202309140522.z5SLip5C-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/20230914/202309140522.z5SLip5C-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/202309140522.z5SLip5C-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): /usr/bin/ld: mm/mm_init.o: in function `alloc_node_mem_map': >> mm/mm_init.c:1660: undefined reference to `mod_node_early_perpage_metadata' /usr/bin/ld: mm/page_alloc.o: in function `setup_per_cpu_pageset': >> mm/page_alloc.c:5500: undefined reference to `writeout_early_perpage_metadata' collect2: error: ld returned 1 exit status vim +1660 mm/mm_init.c 1628 1629 #ifdef CONFIG_FLATMEM 1630 static void __init alloc_node_mem_map(struct pglist_data *pgdat) 1631 { 1632 unsigned long __maybe_unused start = 0; 1633 unsigned long __maybe_unused offset = 0; 1634 1635 /* Skip empty nodes */ 1636 if (!pgdat->node_spanned_pages) 1637 return; 1638 1639 start = pgdat->node_start_pfn & ~(MAX_ORDER_NR_PAGES - 1); 1640 offset = pgdat->node_start_pfn - start; 1641 /* ia64 gets its own node_mem_map, before this, without bootmem */ 1642 if (!pgdat->node_mem_map) { 1643 unsigned long size, end; 1644 struct page *map; 1645 1646 /* 1647 * The zone's endpoints aren't required to be MAX_ORDER 1648 * aligned but the node_mem_map endpoints must be in order 1649 * for the buddy allocator to function correctly. 1650 */ 1651 end = pgdat_end_pfn(pgdat); 1652 end = ALIGN(end, MAX_ORDER_NR_PAGES); 1653 size = (end - start) * sizeof(struct page); 1654 map = memmap_alloc(size, SMP_CACHE_BYTES, MEMBLOCK_LOW_LIMIT, 1655 pgdat->node_id, false); 1656 if (!map) 1657 panic("Failed to allocate %ld bytes for node %d memory map\n", 1658 size, pgdat->node_id); 1659 pgdat->node_mem_map = map + offset; > 1660 mod_node_early_perpage_metadata(pgdat->node_id, 1661 PAGE_ALIGN(size) >> PAGE_SHIFT); 1662 } 1663 pr_debug("%s: node %d, pgdat %08lx, node_mem_map %08lx\n", 1664 __func__, pgdat->node_id, (unsigned long)pgdat, 1665 (unsigned long)pgdat->node_mem_map); 1666 #ifndef CONFIG_NUMA 1667 /* 1668 * With no DISCONTIG, the global mem_map is just set as node 0's 1669 */ 1670 if (pgdat == NODE_DATA(0)) { 1671 mem_map = NODE_DATA(0)->node_mem_map; 1672 if (page_to_pfn(mem_map) != pgdat->node_start_pfn) 1673 mem_map -= offset; 1674 } 1675 #endif 1676 } 1677 #else 1678 static inline void alloc_node_mem_map(struct pglist_data *pgdat) { } 1679 #endif /* CONFIG_FLATMEM */ 1680 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
