[anolis-intel-cloud:devel-5.10 9/9] mm/khugepaged.c:109: warning: Function parameter or member 'nr_exec_vma' not described in 'mm_slot'

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

Hi Xu,

FYI, the error/warning still remains.

tree:   https://gitee.com/anolis/intel-cloud-kernel.git devel-5.10
head:   c858cdc0756d595fe5de0dd4c617f7b5a8971ec6
commit: 5c3c3afed0fd68c32fca885daf7c6fbf46007a25 [9/9] anolis: mm, thp: hugetext: accelerate khugepaged for hugetext vma
config: x86_64-allyesconfig (https://download.01.org/0day-ci/archive/20250410/202504100509.Zq5nrogK-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250410/202504100509.Zq5nrogK-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/202504100509.Zq5nrogK-lkp@intel.com/

All warnings (new ones prefixed by >>):

   mm/khugepaged.c:109: warning: Function parameter or member 'nr_pte_mapped_thp' not described in 'mm_slot'
   mm/khugepaged.c:109: warning: Function parameter or member 'pte_mapped_thp' not described in 'mm_slot'
>> mm/khugepaged.c:109: warning: Function parameter or member 'nr_exec_vma' not described in 'mm_slot'
>> mm/khugepaged.c:109: warning: Function parameter or member 'exec_vma' not described in 'mm_slot'
   mm/khugepaged.c:1493: warning: Function parameter or member 'mm' not described in 'collapse_pte_mapped_thp'
   mm/khugepaged.c:1493: warning: Function parameter or member 'addr' not described in 'collapse_pte_mapped_thp'
   mm/khugepaged.c:1695: warning: Function parameter or member 'mm' not described in 'collapse_file'
   mm/khugepaged.c:1695: warning: Function parameter or member 'file' not described in 'collapse_file'
   mm/khugepaged.c:1695: warning: Function parameter or member 'start' not described in 'collapse_file'
   mm/khugepaged.c:1695: warning: Function parameter or member 'hpage' not described in 'collapse_file'
   mm/khugepaged.c:1695: warning: Function parameter or member 'node' not described in 'collapse_file'


vim +109 mm/khugepaged.c

27e1f8273113ade Song Liu           2019-09-23   87  
b46e756f5e47031 Kirill A. Shutemov 2016-07-26   88  /**
b46e756f5e47031 Kirill A. Shutemov 2016-07-26   89   * struct mm_slot - hash lookup from mm to mm_slot
b46e756f5e47031 Kirill A. Shutemov 2016-07-26   90   * @hash: hash collision list
b46e756f5e47031 Kirill A. Shutemov 2016-07-26   91   * @mm_node: khugepaged scan list headed in khugepaged_scan.mm_head
b46e756f5e47031 Kirill A. Shutemov 2016-07-26   92   * @mm: the mm that this information is valid for
b46e756f5e47031 Kirill A. Shutemov 2016-07-26   93   */
b46e756f5e47031 Kirill A. Shutemov 2016-07-26   94  struct mm_slot {
b46e756f5e47031 Kirill A. Shutemov 2016-07-26   95  	struct hlist_node hash;
b46e756f5e47031 Kirill A. Shutemov 2016-07-26   96  	struct list_head mm_node;
b46e756f5e47031 Kirill A. Shutemov 2016-07-26   97  	struct mm_struct *mm;
27e1f8273113ade Song Liu           2019-09-23   98  
27e1f8273113ade Song Liu           2019-09-23   99  	/* pte-mapped THP in this mm */
27e1f8273113ade Song Liu           2019-09-23  100  	int nr_pte_mapped_thp;
27e1f8273113ade Song Liu           2019-09-23  101  	unsigned long pte_mapped_thp[MAX_PTE_MAPPED_THP];
5c3c3afed0fd68c Xu Yu              2021-08-19  102  
5c3c3afed0fd68c Xu Yu              2021-08-19  103  #ifdef CONFIG_HUGETEXT
5c3c3afed0fd68c Xu Yu              2021-08-19  104  #define MAX_EXEC_VMA       8
5c3c3afed0fd68c Xu Yu              2021-08-19  105  	/* exec vma vm_start in this mm */
5c3c3afed0fd68c Xu Yu              2021-08-19  106  	int nr_exec_vma;
5c3c3afed0fd68c Xu Yu              2021-08-19  107  	unsigned long exec_vma[MAX_EXEC_VMA];
5c3c3afed0fd68c Xu Yu              2021-08-19  108  #endif
b46e756f5e47031 Kirill A. Shutemov 2016-07-26 @109  };
b46e756f5e47031 Kirill A. Shutemov 2016-07-26  110  

:::::: The code at line 109 was first introduced by commit
:::::: b46e756f5e47031c67658ff036e5ffe27062fa43 thp: extract khugepaged from mm/huge_memory.c

:::::: TO: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
:::::: CC: Linus Torvalds <torvalds@linux-foundation.org>

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