tree:
https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git
queue-5.10
head: 9ced6633127bd25a94939777d9ecda54800859fc
commit: ce4ba942d630e0361a9272fc065ee6530bc1bdd7 [56/74] mm/memcg: set memcg when
splitting page
config: powerpc-randconfig-r002-20210318 (attached as .config)
compiler: clang version 13.0.0 (
https://github.com/llvm/llvm-project
6db3ab2903f42712f44000afb5aa467efbd25f35)
reproduce (this is a W=1 build):
wget
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O
~/bin/make.cross
chmod +x ~/bin/make.cross
# install powerpc cross compiling tool for clang build
# apt-get install binutils-powerpc-linux-gnu
#
https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git/c...
git remote add sashal-linux-stable
https://git.kernel.org/pub/scm/linux/kernel/git/sashal/linux-stable.git
git fetch --no-tags sashal-linux-stable queue-5.10
git checkout ce4ba942d630e0361a9272fc065ee6530bc1bdd7
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
All errors (new ones prefixed by >>):
> mm/page_alloc.c:3275:2: error: implicit declaration of function
'split_page_memcg' [-Werror,-Wimplicit-function-declaration]
split_page_memcg(page, 1 << order);
^
mm/page_alloc.c:3563:15: warning: no previous prototype for function
'should_fail_alloc_page' [-Wmissing-prototypes]
noinline bool should_fail_alloc_page(gfp_t gfp_mask, unsigned int order)
^
mm/page_alloc.c:3563:10: note: declare 'static' if the function is not intended
to be used outside of this translation unit
noinline bool should_fail_alloc_page(gfp_t gfp_mask, unsigned int order)
^
static
mm/page_alloc.c:6244:23: warning: no previous prototype for function
'memmap_init' [-Wmissing-prototypes]
void __meminit __weak memmap_init(unsigned long size, int nid,
^
mm/page_alloc.c:6244:1: note: declare 'static' if the function is not intended
to be used outside of this translation unit
void __meminit __weak memmap_init(unsigned long size, int nid,
^
static
2 warnings and 1 error generated.
vim +/split_page_memcg +3275 mm/page_alloc.c
3256
3257 /*
3258 * split_page takes a non-compound higher-order page, and splits it into
3259 * n (1<<order) sub-pages: page[0..n]
3260 * Each sub-page must be freed individually.
3261 *
3262 * Note: this is probably too low level an operation for use in drivers.
3263 * Please consult with lkml before using this in your driver.
3264 */
3265 void split_page(struct page *page, unsigned int order)
3266 {
3267 int i;
3268
3269 VM_BUG_ON_PAGE(PageCompound(page), page);
3270 VM_BUG_ON_PAGE(!page_count(page), page);
3271
3272 for (i = 1; i < (1 << order); i++)
3273 set_page_refcounted(page + i);
3274 split_page_owner(page, 1 << order);
3275 split_page_memcg(page, 1 << order);
3276 }
3277 EXPORT_SYMBOL_GPL(split_page);
3278
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org