tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: d7b3af5a77e8d8da28f435f313e069aea5bcf172 commit: 30c80d3ed8d266bf42116b7f13dbb15b76989232 [4432/4710] powerpc/book3s64/radix: remove mmu_vmemmap_psize config: powerpc-pasemi_defconfig (https://download.01.org/0day-ci/archive/20230731/202307311138.bn4Pj1Ht-lkp@xxxxxxxxx/config) compiler: powerpc64-linux-gcc (GCC) 12.3.0 reproduce: (https://download.01.org/0day-ci/archive/20230731/202307311138.bn4Pj1Ht-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/202307311138.bn4Pj1Ht-lkp@xxxxxxxxx/ All errors (new ones prefixed by >>): >> arch/powerpc/mm/init_64.c:201:15: error: no previous prototype for '__vmemmap_populate' [-Werror=missing-prototypes] 201 | int __meminit __vmemmap_populate(unsigned long start, unsigned long end, int node, | ^~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors vim +/__vmemmap_populate +201 arch/powerpc/mm/init_64.c 200 > 201 int __meminit __vmemmap_populate(unsigned long start, unsigned long end, int node, 202 struct vmem_altmap *altmap) 203 { 204 bool altmap_alloc; 205 unsigned long page_size = 1 << mmu_psize_defs[mmu_vmemmap_psize].shift; 206 207 /* Align to the page size of the linear mapping. */ 208 start = ALIGN_DOWN(start, page_size); 209 210 pr_debug("vmemmap_populate %lx..%lx, node %d\n", start, end, node); 211 212 for (; start < end; start += page_size) { 213 void *p = NULL; 214 int rc; 215 216 /* 217 * This vmemmap range is backing different subsections. If any 218 * of that subsection is marked valid, that means we already 219 * have initialized a page table covering this range and hence 220 * the vmemmap range is populated. 221 */ 222 if (vmemmap_populated(start, page_size)) 223 continue; 224 225 /* 226 * Allocate from the altmap first if we have one. This may 227 * fail due to alignment issues when using 16MB hugepages, so 228 * fall back to system memory if the altmap allocation fail. 229 */ 230 if (altmap && !altmap_cross_boundary(altmap, start, page_size)) { 231 p = vmemmap_alloc_block_buf(page_size, node, altmap); 232 if (!p) 233 pr_debug("altmap block allocation failed, falling back to system memory"); 234 else 235 altmap_alloc = true; 236 } 237 if (!p) { 238 p = vmemmap_alloc_block_buf(page_size, node, NULL); 239 altmap_alloc = false; 240 } 241 if (!p) 242 return -ENOMEM; 243 244 if (vmemmap_list_populate(__pa(p), start, node)) { 245 /* 246 * If we don't populate vmemap list, we don't have 247 * the ability to free the allocated vmemmap 248 * pages in section_deactivate. Hence free them 249 * here. 250 */ 251 int nr_pfns = page_size >> PAGE_SHIFT; 252 unsigned long page_order = get_order(page_size); 253 254 if (altmap_alloc) 255 vmem_altmap_free(altmap, nr_pfns); 256 else 257 free_pages((unsigned long)p, page_order); 258 return -ENOMEM; 259 } 260 261 pr_debug(" * %016lx..%016lx allocated at %p\n", 262 start, start + page_size, p); 263 264 rc = vmemmap_create_mapping(start, page_size, __pa(p)); 265 if (rc < 0) { 266 pr_warn("%s: Unable to create vmemmap mapping: %d\n", 267 __func__, rc); 268 return -EFAULT; 269 } 270 } 271 272 return 0; 273 } 274 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
