tree:   git://git.cmpxchg.org/linux-mmotm.git master
head:   c64429bcc60a702f19f5cfdb5c39277863278a8c
commit: c2ae2ed329b6b540ea2cbf75a7d14f7ff194b296 [10/417] mm/page_alloc.c: don't offset memmap for flatmem
config: mn10300-asb2364_defconfig (attached as .config)
reproduce:
  wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
  chmod +x ~/bin/make.cross
  git checkout c2ae2ed329b6b540ea2cbf75a7d14f7ff194b296
  # save the attached .config to linux build tree
  make.cross ARCH=mn10300 

All error/warnings:

   mm/page_alloc.c: In function 'alloc_node_mem_map':
>> mm/page_alloc.c:5033:38: error: 'ARCH_PFN_OFFSET' undeclared (first use in this function)
        offset = pgdat->node_start_pfn - ARCH_PFN_OFFSET;
                                         ^
   mm/page_alloc.c:5033:38: note: each undeclared identifier is reported only once for each function it appears in

vim +/ARCH_PFN_OFFSET +5033 mm/page_alloc.c

  5027		 */
  5028		if (pgdat == NODE_DATA(0)) {
  5029			mem_map = NODE_DATA(0)->node_mem_map;
  5030	#if defined(CONFIG_HAVE_MEMBLOCK_NODE_MAP) || defined(CONFIG_FLATMEM)
  5031			if (page_to_pfn(mem_map) != pgdat->node_start_pfn) {
  5032				if (IS_ENABLED(CONFIG_HAVE_MEMBLOCK_NODE_MAP))
> 5033					offset = pgdat->node_start_pfn - ARCH_PFN_OFFSET;
  5034				mem_map -= offset;
  5035			}
  5036	#endif /* CONFIG_HAVE_MEMBLOCK_NODE_MAP || CONFIG_FLATMEM */

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0-DAY kernel test infrastructure                Open Source Technology Center
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