[openeuler:openEuler-1.0-LTS 1544/1544] mm/share_pool.c:2263:24: error: implicit declaration of function 'hugetlb_alloc_hugepage'; did you mean 'vmalloc_hugepage'?

[kernel test robot <lkp@intel.com>]

Hi Ding,

FYI, the error/warning still remains.

tree:   https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS
head:   54ad6c4559d2bcbb5d7a03050b2f417a326a1ce2
commit: 4a280fac30d27ae2aff096f9f99aa12d50f83426 [1544/1544] ascend: share_pool: support share pool features for ascend platform
config: arm64-randconfig-r131-20250401 (https://download.01.org/0day-ci/archive/20250401/202504011702.UDJZ2vxB-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 11.5.0
reproduce: (https://download.01.org/0day-ci/archive/20250401/202504011702.UDJZ2vxB-lkp@intel.com/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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202504011702.UDJZ2vxB-lkp@intel.com/

All errors (new ones prefixed by >>):

   mm/share_pool.c:55:5: sparse: sparse: symbol 'enable_mdc_default_group' was not declared. Should it be static?
   mm/share_pool.c:172:6: sparse: sparse: symbol 'host_svm_sp_enable' was not declared. Should it be static?
   mm/share_pool.c:1542:21: sparse: sparse: undefined identifier 'huge_ptep_get'
   mm/share_pool.c:1542:34: sparse: sparse: invalid initializer
   mm/share_pool.c:2263:24: sparse: sparse: undefined identifier 'hugetlb_alloc_hugepage'
   mm/share_pool.c:236:28: sparse: sparse: context imbalance in 'spa_dec_usage' - unexpected unlock
   mm/share_pool.c: In function 'sp_hugetlb_entry':
   mm/share_pool.c:1542:21: error: implicit declaration of function 'huge_ptep_get' [-Werror=implicit-function-declaration]
    1542 |         pte_t pte = huge_ptep_get(ptep);
         |                     ^~~~~~~~~~~~~
   mm/share_pool.c:1542:21: error: invalid initializer
   mm/share_pool.c: In function 'sp_alloc_pages':
>> mm/share_pool.c:2263:24: error: implicit declaration of function 'hugetlb_alloc_hugepage'; did you mean 'vmalloc_hugepage'? [-Werror=implicit-function-declaration]
    2263 |                 return hugetlb_alloc_hugepage(NUMA_NO_NODE, HUGETLB_ALLOC_NONE);
         |                        ^~~~~~~~~~~~~~~~~~~~~~
         |                        vmalloc_hugepage
>> mm/share_pool.c:2263:61: error: 'HUGETLB_ALLOC_NONE' undeclared (first use in this function); did you mean 'HUGETLB_ANON_FILE'?
    2263 |                 return hugetlb_alloc_hugepage(NUMA_NO_NODE, HUGETLB_ALLOC_NONE);
         |                                                             ^~~~~~~~~~~~~~~~~~
         |                                                             HUGETLB_ANON_FILE
   mm/share_pool.c:2263:61: note: each undeclared identifier is reported only once for each function it appears in
   mm/share_pool.c:2266:1: warning: control reaches end of non-void function [-Wreturn-type]
    2266 | }
         | ^
   cc1: some warnings being treated as errors

sparse warnings: (new ones prefixed by >>)
   mm/share_pool.c:55:5: sparse: sparse: symbol 'enable_mdc_default_group' was not declared. Should it be static?
   mm/share_pool.c:172:6: sparse: sparse: symbol 'host_svm_sp_enable' was not declared. Should it be static?
   mm/share_pool.c:1542:21: sparse: sparse: undefined identifier 'huge_ptep_get'
>> mm/share_pool.c:1542:34: sparse: sparse: invalid initializer
   mm/share_pool.c:2263:24: sparse: sparse: undefined identifier 'hugetlb_alloc_hugepage'
   mm/share_pool.c:236:28: sparse: sparse: context imbalance in 'spa_dec_usage' - unexpected unlock
   mm/share_pool.c: In function 'sp_hugetlb_entry':
   mm/share_pool.c:1542:21: error: implicit declaration of function 'huge_ptep_get' [-Werror=implicit-function-declaration]
    1542 |         pte_t pte = huge_ptep_get(ptep);
         |                     ^~~~~~~~~~~~~
   mm/share_pool.c:1542:21: error: invalid initializer
   mm/share_pool.c: In function 'sp_alloc_pages':
   mm/share_pool.c:2263:24: error: implicit declaration of function 'hugetlb_alloc_hugepage'; did you mean 'vmalloc_hugepage'? [-Werror=implicit-function-declaration]
    2263 |                 return hugetlb_alloc_hugepage(NUMA_NO_NODE, HUGETLB_ALLOC_NONE);
         |                        ^~~~~~~~~~~~~~~~~~~~~~
         |                        vmalloc_hugepage
   mm/share_pool.c:2263:61: error: 'HUGETLB_ALLOC_NONE' undeclared (first use in this function); did you mean 'HUGETLB_ANON_FILE'?
    2263 |                 return hugetlb_alloc_hugepage(NUMA_NO_NODE, HUGETLB_ALLOC_NONE);
         |                                                             ^~~~~~~~~~~~~~~~~~
         |                                                             HUGETLB_ANON_FILE
   mm/share_pool.c:2263:61: note: each undeclared identifier is reported only once for each function it appears in
   mm/share_pool.c:2266:1: warning: control reaches end of non-void function [-Wreturn-type]
    2266 | }
         | ^
   cc1: some warnings being treated as errors

vim +2263 mm/share_pool.c

  2257	
  2258	
  2259	struct page *sp_alloc_pages(struct vm_struct *area, gfp_t mask,
  2260						  unsigned int page_order, int node)
  2261	{
  2262		if (area->flags & VM_HUGE_PAGES)
> 2263			return hugetlb_alloc_hugepage(NUMA_NO_NODE, HUGETLB_ALLOC_NONE);
  2264		else
  2265			return alloc_pages_node(node, mask, page_order);
  2266	}
  2267	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki