[rgushchin:cleanup_kmem_api 5/8] mm/page_alloc.c:1162:3: error: implicit declaration of function '__memcg_kmem_uncharge_page'; did you mean 'memcg_kmem_uncharge_page'?

[rgushchin:cleanup_kmem_api 5/8] mm/page_alloc.c:1162:3: error: implicit declaration of function '__memcg_kmem_uncharge_page'; did you mean 'memcg_kmem_uncharge_page'?

[kbuild test robot]

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tree:   https://github.com/rgushchin/linux.git cleanup_kmem_api
head:   b095b055b2b4f875d593a65595d74db40370e2e3
commit: 8809a9e7cfa5525b7784111c123f80040f85f7c9 [5/8] mm: kmem: rename memcg_kmem_(un)charge() into memcg_kmem_(un)charge_page()
config: parisc-c3000_defconfig (attached as .config)
compiler: hppa-linux-gcc (GCC) 7.5.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 8809a9e7cfa5525b7784111c123f80040f85f7c9
        # save the attached .config to linux build tree
        GCC_VERSION=7.5.0 make.cross ARCH=parisc 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   mm/page_alloc.c: In function 'free_pages_prepare':
>> mm/page_alloc.c:1162:3: error: implicit declaration of function '__memcg_kmem_uncharge_page'; did you mean 'memcg_kmem_uncharge_page'? [-Werror=implicit-function-declaration]
      __memcg_kmem_uncharge_page(page, order);
      ^~~~~~~~~~~~~~~~~~~~~~~~~~
      memcg_kmem_uncharge_page
   In file included from include/linux/kernel.h:11:0,
                    from arch/parisc/include/asm/bug.h:5,
                    from include/linux/bug.h:5,
                    from include/linux/mmdebug.h:5,
                    from include/linux/mm.h:9,
                    from mm/page_alloc.c:19:
   mm/page_alloc.c: In function '__alloc_pages_nodemask':
>> mm/page_alloc.c:4780:15: error: implicit declaration of function '__memcg_kmem_charge_page'; did you mean 'memcg_kmem_charge_page'? [-Werror=implicit-function-declaration]
         unlikely(__memcg_kmem_charge_page(page, gfp_mask, order) != 0)) {
                  ^
   include/linux/compiler.h:78:42: note: in definition of macro 'unlikely'
    # define unlikely(x) __builtin_expect(!!(x), 0)
                                             ^
   cc1: some warnings being treated as errors

vim +1162 mm/page_alloc.c

  1127	
  1128	static __always_inline bool free_pages_prepare(struct page *page,
  1129						unsigned int order, bool check_free)
  1130	{
  1131		int bad = 0;
  1132	
  1133		VM_BUG_ON_PAGE(PageTail(page), page);
  1134	
  1135		trace_mm_page_free(page, order);
  1136	
  1137		/*
  1138		 * Check tail pages before head page information is cleared to
  1139		 * avoid checking PageCompound for order-0 pages.
  1140		 */
  1141		if (unlikely(order)) {
  1142			bool compound = PageCompound(page);
  1143			int i;
  1144	
  1145			VM_BUG_ON_PAGE(compound && compound_order(page) != order, page);
  1146	
  1147			if (compound)
  1148				ClearPageDoubleMap(page);
  1149			for (i = 1; i < (1 << order); i++) {
  1150				if (compound)
  1151					bad += free_tail_pages_check(page, page + i);
  1152				if (unlikely(free_pages_check(page + i))) {
  1153					bad++;
  1154					continue;
  1155				}
  1156				(page + i)->flags &= ~PAGE_FLAGS_CHECK_AT_PREP;
  1157			}
  1158		}
  1159		if (PageMappingFlags(page))
  1160			page->mapping = NULL;
  1161		if (memcg_kmem_enabled() && PageKmemcg(page))
> 1162			__memcg_kmem_uncharge_page(page, order);
  1163		if (check_free)
  1164			bad += free_pages_check(page);
  1165		if (bad)
  1166			return false;
  1167	
  1168		page_cpupid_reset_last(page);
  1169		page->flags &= ~PAGE_FLAGS_CHECK_AT_PREP;
  1170		reset_page_owner(page, order);
  1171	
  1172		if (!PageHighMem(page)) {
  1173			debug_check_no_locks_freed(page_address(page),
  1174						   PAGE_SIZE << order);
  1175			debug_check_no_obj_freed(page_address(page),
  1176						   PAGE_SIZE << order);
  1177		}
  1178		if (want_init_on_free())
  1179			kernel_init_free_pages(page, 1 << order);
  1180	
  1181		kernel_poison_pages(page, 1 << order, 0);
  1182		/*
  1183		 * arch_free_page() can make the page's contents inaccessible.  s390
  1184		 * does this.  So nothing which can access the page's contents should
  1185		 * happen after this.
  1186		 */
  1187		arch_free_page(page, order);
  1188	
  1189		if (debug_pagealloc_enabled())
  1190			kernel_map_pages(page, 1 << order, 0);
  1191	
  1192		kasan_free_nondeferred_pages(page, order);
  1193	
  1194		return true;
  1195	}
  1196	

---
0-DAY kernel test infrastructure                 Open Source Technology Center
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org Intel Corporation

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