tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: 20af1ca418d2c0b11bc2a1fe8c0c88f67bcc2a7e commit: 9ea89c8b43ac0de34c9542a97eaab901af02e5a8 [10511/10830] mm: make folio_pte_batch available outside of mm/memory.c config: sh-allyesconfig (https://download.01.org/0day-ci/archive/20240228/202402282343.FVkeq0Vs-lkp@xxxxxxxxx/config) compiler: sh4-linux-gcc (GCC) 13.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240228/202402282343.FVkeq0Vs-lkp@xxxxxxxxx/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@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202402282343.FVkeq0Vs-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): In file included from mm/filemap.c:51: mm/internal.h: In function 'folio_pte_batch': >> mm/internal.h:144:14: error: implicit declaration of function 'pte_batch_hint' [-Werror=implicit-function-declaration] 144 | nr = pte_batch_hint(start_ptep, pte); | ^~~~~~~~~~~~~~ >> mm/internal.h:145:50: error: implicit declaration of function 'pte_advance_pfn' [-Werror=implicit-function-declaration] 145 | expected_pte = __pte_batch_clear_ignored(pte_advance_pfn(pte, nr), flags); | ^~~~~~~~~~~~~~~ >> mm/internal.h:145:50: error: incompatible type for argument 1 of '__pte_batch_clear_ignored' 145 | expected_pte = __pte_batch_clear_ignored(pte_advance_pfn(pte, nr), flags); | ^~~~~~~~~~~~~~~~~~~~~~~~ | | | int mm/internal.h:95:53: note: expected 'pte_t' but argument is of type 'int' 95 | static inline pte_t __pte_batch_clear_ignored(pte_t pte, fpb_t flags) | ~~~~~~^~~ >> mm/internal.h:149:23: error: implicit declaration of function 'ptep_get' [-Werror=implicit-function-declaration] 149 | pte = ptep_get(ptep); | ^~~~~~~~ >> mm/internal.h:149:23: error: incompatible types when assigning to type 'pte_t' from type 'int' >> mm/internal.h:154:22: error: implicit declaration of function 'pte_same'; did you mean 'pte_page'? [-Werror=implicit-function-declaration] 154 | if (!pte_same(pte, expected_pte)) | ^~~~~~~~ | pte_page mm/internal.h:169:32: error: incompatible types when assigning to type 'pte_t' from type 'int' 169 | expected_pte = pte_advance_pfn(expected_pte, nr); | ^~~~~~~~~~~~~~~ cc1: some warnings being treated as errors -- In file included from lib/vsprintf.c:50: lib/../mm/internal.h: In function 'folio_pte_batch': >> lib/../mm/internal.h:144:14: error: implicit declaration of function 'pte_batch_hint' [-Werror=implicit-function-declaration] 144 | nr = pte_batch_hint(start_ptep, pte); | ^~~~~~~~~~~~~~ >> lib/../mm/internal.h:145:50: error: implicit declaration of function 'pte_advance_pfn' [-Werror=implicit-function-declaration] 145 | expected_pte = __pte_batch_clear_ignored(pte_advance_pfn(pte, nr), flags); | ^~~~~~~~~~~~~~~ >> lib/../mm/internal.h:145:50: error: incompatible type for argument 1 of '__pte_batch_clear_ignored' 145 | expected_pte = __pte_batch_clear_ignored(pte_advance_pfn(pte, nr), flags); | ^~~~~~~~~~~~~~~~~~~~~~~~ | | | int lib/../mm/internal.h:95:53: note: expected 'pte_t' but argument is of type 'int' 95 | static inline pte_t __pte_batch_clear_ignored(pte_t pte, fpb_t flags) | ~~~~~~^~~ >> lib/../mm/internal.h:149:23: error: implicit declaration of function 'ptep_get' [-Werror=implicit-function-declaration] 149 | pte = ptep_get(ptep); | ^~~~~~~~ >> lib/../mm/internal.h:149:23: error: incompatible types when assigning to type 'pte_t' from type 'int' >> lib/../mm/internal.h:154:22: error: implicit declaration of function 'pte_same'; did you mean 'pte_page'? [-Werror=implicit-function-declaration] 154 | if (!pte_same(pte, expected_pte)) | ^~~~~~~~ | pte_page lib/../mm/internal.h:169:32: error: incompatible types when assigning to type 'pte_t' from type 'int' 169 | expected_pte = pte_advance_pfn(expected_pte, nr); | ^~~~~~~~~~~~~~~ lib/vsprintf.c: In function 'va_format': lib/vsprintf.c:1683:9: warning: function 'va_format' might be a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format] 1683 | buf += vsnprintf(buf, end > buf ? end - buf : 0, va_fmt->fmt, va); | ^~~ cc1: some warnings being treated as errors vim +/pte_batch_hint +144 mm/internal.h 94 > 95 static inline pte_t __pte_batch_clear_ignored(pte_t pte, fpb_t flags) 96 { 97 if (flags & FPB_IGNORE_DIRTY) 98 pte = pte_mkclean(pte); 99 if (likely(flags & FPB_IGNORE_SOFT_DIRTY)) 100 pte = pte_clear_soft_dirty(pte); 101 return pte_wrprotect(pte_mkold(pte)); 102 } 103 104 /** 105 * folio_pte_batch - detect a PTE batch for a large folio 106 * @folio: The large folio to detect a PTE batch for. 107 * @addr: The user virtual address the first page is mapped at. 108 * @start_ptep: Page table pointer for the first entry. 109 * @pte: Page table entry for the first page. 110 * @max_nr: The maximum number of table entries to consider. 111 * @flags: Flags to modify the PTE batch semantics. 112 * @any_writable: Optional pointer to indicate whether any entry except the 113 * first one is writable. 114 * 115 * Detect a PTE batch: consecutive (present) PTEs that map consecutive 116 * pages of the same large folio. 117 * 118 * All PTEs inside a PTE batch have the same PTE bits set, excluding the PFN, 119 * the accessed bit, writable bit, dirty bit (with FPB_IGNORE_DIRTY) and 120 * soft-dirty bit (with FPB_IGNORE_SOFT_DIRTY). 121 * 122 * start_ptep must map any page of the folio. max_nr must be at least one and 123 * must be limited by the caller so scanning cannot exceed a single page table. 124 * 125 * Return: the number of table entries in the batch. 126 */ 127 static inline int folio_pte_batch(struct folio *folio, unsigned long addr, 128 pte_t *start_ptep, pte_t pte, int max_nr, fpb_t flags, 129 bool *any_writable) 130 { 131 unsigned long folio_end_pfn = folio_pfn(folio) + folio_nr_pages(folio); 132 const pte_t *end_ptep = start_ptep + max_nr; 133 pte_t expected_pte, *ptep; 134 bool writable; 135 int nr; 136 137 if (any_writable) 138 *any_writable = false; 139 140 VM_WARN_ON_FOLIO(!pte_present(pte), folio); 141 VM_WARN_ON_FOLIO(!folio_test_large(folio) || max_nr < 1, folio); 142 VM_WARN_ON_FOLIO(page_folio(pfn_to_page(pte_pfn(pte))) != folio, folio); 143 > 144 nr = pte_batch_hint(start_ptep, pte); > 145 expected_pte = __pte_batch_clear_ignored(pte_advance_pfn(pte, nr), flags); 146 ptep = start_ptep + nr; 147 148 while (ptep < end_ptep) { > 149 pte = ptep_get(ptep); 150 if (any_writable) 151 writable = !!pte_write(pte); 152 pte = __pte_batch_clear_ignored(pte, flags); 153 > 154 if (!pte_same(pte, expected_pte)) 155 break; 156 157 /* 158 * Stop immediately once we reached the end of the folio. In 159 * corner cases the next PFN might fall into a different 160 * folio. 161 */ 162 if (pte_pfn(pte) >= folio_end_pfn) 163 break; 164 165 if (any_writable) 166 *any_writable |= writable; 167 168 nr = pte_batch_hint(ptep, pte); 169 expected_pte = pte_advance_pfn(expected_pte, nr); 170 ptep += nr; 171 } 172 173 return min(ptep - start_ptep, max_nr); 174 } 175 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
