[openeuler:OLK-6.6 1359/15331] mm/share_pool.c:1226:21: error: implicit declaration of function 'huge_ptep_get'

[openeuler:OLK-6.6 1359/15331] mm/share_pool.c:1226:21: error: implicit declaration of function 'huge_ptep_get'

[kernel test robot]

Hi Wang,

FYI, the error/warning still remains.

tree:   https://gitee.com/openeuler/kernel.git OLK-6.6
head:   9d0af12b79bee784902822ddeec2e1a8cfc18524
commit: 549b1f40b56511536196f7522ffa4d7b3da42337 [1359/15331] mm/sharepool: Implement mg_sp_make_share_u2k()
config: arm64-randconfig-003-20241027 (https://download.01.org/0day-ci/archive/20241027/202410270650.btnHpujZ-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 14.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241027/202410270650.btnHpujZ-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/202410270650.btnHpujZ-lkp@intel.com/

All errors (new ones prefixed by >>):

   mm/share_pool.c: In function 'sp_hugetlb_entry':
>> mm/share_pool.c:1226:21: error: implicit declaration of function 'huge_ptep_get' [-Wimplicit-function-declaration]
    1226 |         pte_t pte = huge_ptep_get(ptep);
         |                     ^~~~~~~~~~~~~
>> mm/share_pool.c:1226:21: error: invalid initializer
   mm/share_pool.c: At top level:
   mm/share_pool.c:1005:13: warning: 'sp_area_put_locked' defined but not used [-Wunused-function]
    1005 | static void sp_area_put_locked(struct sp_area *spa)
         |             ^~~~~~~~~~~~~~~~~~
   mm/share_pool.c:944:24: warning: 'sp_area_get' defined but not used [-Wunused-function]
     944 | static struct sp_area *sp_area_get(struct sp_group *spg,
         |                        ^~~~~~~~~~~
   mm/share_pool.c:791:24: warning: 'sp_area_alloc' defined but not used [-Wunused-function]
     791 | static struct sp_area *sp_area_alloc(unsigned long size, unsigned long flags,
         |                        ^~~~~~~~~~~~~
   mm/share_pool.c:587:21: warning: 'spa_file' defined but not used [-Wunused-function]
     587 | static struct file *spa_file(struct sp_area *spa)
         |                     ^~~~~~~~
   mm/share_pool.c:582:22: warning: 'spa_size' defined but not used [-Wunused-function]
     582 | static unsigned long spa_size(struct sp_area *spa)
         |                      ^~~~~~~~
   mm/share_pool.c:497:13: warning: 'update_mem_usage_k2u' defined but not used [-Wunused-function]
     497 | static void update_mem_usage_k2u(unsigned long size, bool inc,
         |             ^~~~~~~~~~~~~~~~~~~~
   mm/share_pool.c:485:13: warning: 'update_mem_usage_alloc' defined but not used [-Wunused-function]
     485 | static void update_mem_usage_alloc(unsigned long size, bool inc,
         |             ^~~~~~~~~~~~~~~~~~~~~~
   mm/share_pool.c:438:12: warning: 'sp_group_setup_mapping_normal' defined but not used [-Wunused-function]
     438 | static int sp_group_setup_mapping_normal(struct mm_struct *mm, struct sp_group *spg)
         |            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   mm/share_pool.c:380:13: warning: 'sp_mapping_detach' defined but not used [-Wunused-function]
     380 | static void sp_mapping_detach(struct sp_group *spg, struct sp_mapping *spm)
         |             ^~~~~~~~~~~~~~~~~
   mm/share_pool.c:237:13: warning: 'meminfo_init' defined but not used [-Wunused-function]
     237 | static void meminfo_init(struct sp_meminfo *meminfo)
         |             ^~~~~~~~~~~~
   In file included from mm/share_pool.c:26:
   mm/share_pool.c:76:19: warning: 'sp_group_idr' defined but not used [-Wunused-variable]
      76 | static DEFINE_IDR(sp_group_idr);
         |                   ^~~~~~~~~~~~
   include/linux/idr.h:56:44: note: in definition of macro 'DEFINE_IDR'
      56 | #define DEFINE_IDR(name)        struct idr name = IDR_INIT(name)
         |                                            ^~~~
   mm/share_pool.c:73:12: warning: 'system_group_count' defined but not used [-Wunused-variable]
      73 | static int system_group_count;
         |            ^~~~~~~~~~~~~~~~~~


vim +/huge_ptep_get +1226 mm/share_pool.c

  1221	
  1222	static int sp_hugetlb_entry(pte_t *ptep, unsigned long hmask,
  1223				    unsigned long addr, unsigned long next,
  1224				    struct mm_walk *walk)
  1225	{
> 1226		pte_t pte = huge_ptep_get(ptep);
  1227		struct page *page = pte_page(pte);
  1228		struct sp_walk_data *sp_walk_data;
  1229	
  1230		if (unlikely(!pte_present(pte))) {
  1231			pr_debug("the page of addr %lx unexpectedly not in RAM\n", (unsigned long)addr);
  1232			return -EFAULT;
  1233		}
  1234	
  1235		sp_walk_data = walk->private;
  1236		get_page(page);
  1237		sp_walk_data->pages[sp_walk_data->page_count++] = page;
  1238		return 0;
  1239	}
  1240	

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