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ISO C99 and later do not support implicit function declarations Message-ID: <202609110857.T3uVHRo8-lkp@intel.com> User-Agent: s-nail v14.9.25 X-Rspam-User: X-Stat-Signature: 9zsm6txu913ku5o9dcikfgoku6bn17wi X-Rspamd-Queue-Id: E127814000C X-Rspamd-Server: rspam07 X-HE-Tag: 1789087126-543882 X-HE-Meta: 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 AutZO32G 5yELcKUMOXyx7HYn7fzI6yNN5MVJU2Zb9U+bV7+ZShGclnaahrRqMcz1ACZOYl9UfXdCjpqlvjHBbfI2rtDywzs5BiHHLNgw/AaBPNxf4ieSr/teCCTYYBndN0m71mPzUERdcCpjaQxOQDLLGx+CNO2pj1NIScnYNcWMQPrJx7nmbynV6Ef3g4xDvHLnL/y9uXoMO6qvmvkBlO6IdVuVV3ZujWtgUgQJNzFUgjgDtVlPej5s/F5+4Z1Qnstf3MWi+kz+ZZJFrCY5KKVVt4PFW8q5jNqIN05cq5SM8XGAIvr9y3Nz+yZX9ttLpjVnlIi3YnzHt5lCFZ+X/4SramFIkKxZd5yFx6/5pHl0pXM4eP/OINiY= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: tree: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-new head: 1f78f28a2945f9e856b4ea8428ac41a6788e4b67 commit: 88ef4ca76f70778f2f51c9e749dc9bcc607a2424 [/391] powerpc/mm: switch device DAX to shared tail vmemmap pages config: powerpc64-randconfig-002-20260911 (https://download.01.org/0day-ci/archive/20260911/202609110857.T3uVHRo8-lkp@intel.com/config) compiler: clang version 24.0.0git (https://github.com/llvm/llvm-project 96295a1412f9afbee9d4a3c2701e83f5a529a9cc) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260911/202609110857.T3uVHRo8-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 | Closes: https://lore.kernel.org/oe-kbuild-all/202609110857.T3uVHRo8-lkp@intel.com/ Note: the akpm-mm/mm-new HEAD 1f78f28a2945f9e856b4ea8428ac41a6788e4b67 builds fine. It only hurts bisectability. All errors (new ones prefixed by >>): >> arch/powerpc/mm/book3s64/radix_pgtable.c:1274:46: error: call to undeclared function 'device_zone'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 1274 | tail_page = vmemmap_shared_tail_page(order, device_zone(node)); | ^ arch/powerpc/mm/book3s64/radix_pgtable.c:1274:46: note: did you mean 'device_move'? include/linux/device.h:1209:5: note: 'device_move' declared here 1209 | int device_move(struct device *dev, struct device *new_parent, | ^ >> arch/powerpc/mm/book3s64/radix_pgtable.c:1274:46: error: incompatible integer to pointer conversion passing 'int' to parameter of type 'struct zone *' [-Wint-conversion] 1274 | tail_page = vmemmap_shared_tail_page(order, device_zone(node)); | ^~~~~~~~~~~~~~~~~ include/linux/vmemmap-optimization.h:89:72: note: passing argument to parameter 'zone' here 89 | struct page *vmemmap_shared_tail_page(unsigned int order, struct zone *zone); | ^ 2 errors generated. vim +/device_zone +1274 arch/powerpc/mm/book3s64/radix_pgtable.c 1253 1254 int __meminit vmemmap_populate_compound_pages(unsigned long start_pfn, 1255 unsigned long start, 1256 unsigned long end, int node, 1257 struct dev_pagemap *pgmap) 1258 { 1259 /* 1260 * we want to map things as base page size mapping so that 1261 * we can save space in vmemmap. We could have huge mapping 1262 * covering out both edges. 1263 */ 1264 unsigned long addr; 1265 unsigned long next; 1266 pgd_t *pgd; 1267 p4d_t *p4d; 1268 pud_t *pud; 1269 pmd_t *pmd; 1270 pte_t *pte; 1271 struct page *tail_page; 1272 unsigned int order = pfn_to_section_order(start_pfn); 1273 > 1274 tail_page = vmemmap_shared_tail_page(order, device_zone(node)); 1275 if (!tail_page) 1276 return -ENOMEM; 1277 1278 for (addr = start; addr < end; addr = next) { 1279 1280 pgd = pgd_offset_k(addr); 1281 p4d = p4d_offset(pgd, addr); 1282 pud = vmemmap_pud_alloc(p4d, node, addr); 1283 if (!pud) 1284 return -ENOMEM; 1285 pmd = vmemmap_pmd_alloc(pud, node, addr); 1286 if (!pmd) 1287 return -ENOMEM; 1288 1289 if (pmd_leaf(READ_ONCE(*pmd))) { 1290 /* existing huge mapping. Skip the range */ 1291 next = pmd_addr_end(addr, end); 1292 continue; 1293 } 1294 pte = vmemmap_pte_alloc(pmd, node, addr); 1295 if (!pte) 1296 return -ENOMEM; 1297 if (!pte_none(*pte)) { 1298 /* 1299 * This could be because we already have a compound 1300 * page whose VMEMMAP_RESERVE_NR pages were mapped and 1301 * this request fall in those pages. 1302 */ 1303 next = addr + PAGE_SIZE; 1304 continue; 1305 } else { 1306 unsigned long nr_pages = 1UL << order; 1307 unsigned long addr_pfn = page_to_pfn((struct page *)addr); 1308 unsigned long pfn_offset = addr_pfn - ALIGN_DOWN(addr_pfn, nr_pages); 1309 1310 /* 1311 * if the address is aligned to huge page size it is the 1312 * head mapping. 1313 */ 1314 if (pfn_offset == 0) { 1315 /* Populate the head page vmemmap page */ 1316 pte = radix__vmemmap_pte_populate(pmd, addr, node, NULL, NULL); 1317 if (!pte) 1318 return -ENOMEM; 1319 vmemmap_verify(pte, node, addr, addr + PAGE_SIZE); 1320 1321 /* 1322 * Populate the tail pages vmemmap page 1323 * It can fall in different pmd, hence 1324 * vmemmap_populate_address() 1325 */ 1326 pte = radix__vmemmap_populate_address(addr + PAGE_SIZE, node, NULL, NULL); 1327 if (!pte) 1328 return -ENOMEM; 1329 1330 next = addr + 2 * PAGE_SIZE; 1331 continue; 1332 } 1333 1334 pte = radix__vmemmap_pte_populate(pmd, addr, node, NULL, tail_page); 1335 if (!pte) 1336 return -ENOMEM; 1337 vmemmap_verify(pte, node, addr, addr + PAGE_SIZE); 1338 1339 next = addr + PAGE_SIZE; 1340 continue; 1341 } 1342 } 1343 return 0; 1344 } 1345 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki