tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: b9011c7e671dbbf59bb753283ddfd03f0c9eb865 commit: 213d5092776345ad5d6e2efa36a6bfbe9899e8b3 [282/8423] drm/i915/ttm: Introduce a TTM i915 gem object backend config: i386-randconfig-r021-20210816 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 44d0a99a12ec7ead4d2f5ef649ba05b40f6d463d) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commi... git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 213d5092776345ad5d6e2efa36a6bfbe9899e8b3 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): ^ include/linux/pci.h:2154:69: warning: unused parameter 'dev' [-Wunused-parameter] static inline resource_size_t pci_iov_resource_size(struct pci_dev *dev, int resno) ^ include/linux/pci.h:2154:78: warning: unused parameter 'resno' [-Wunused-parameter] static inline resource_size_t pci_iov_resource_size(struct pci_dev *dev, int resno) ^ include/linux/pci.h:2156:61: warning: unused parameter 'dev' [-Wunused-parameter] static inline void pci_vf_drivers_autoprobe(struct pci_dev *dev, bool probe) { } ^ include/linux/pci.h:2156:71: warning: unused parameter 'probe' [-Wunused-parameter] static inline void pci_vf_drivers_autoprobe(struct pci_dev *dev, bool probe) { } ^ In file included from drivers/gpu/drm/i915/gem/i915_gem_ttm.c:9: In file included from drivers/gpu/drm/i915/i915_drv.h:84: In file included from drivers/gpu/drm/i915/gt/intel_engine.h:17: In file included from drivers/gpu/drm/i915/gt/intel_gt_types.h:18: In file included from drivers/gpu/drm/i915/gt/uc/intel_uc.h:9: drivers/gpu/drm/i915/gt/uc/intel_guc.h:109:59: warning: unused parameter 'guc' [-Wunused-parameter] static inline u32 intel_guc_ggtt_offset(struct intel_guc *guc, ^ In file included from drivers/gpu/drm/i915/gem/i915_gem_ttm.c:9: In file included from drivers/gpu/drm/i915/i915_drv.h:84: In file included from drivers/gpu/drm/i915/gt/intel_engine.h:17: In file included from drivers/gpu/drm/i915/gt/intel_gt_types.h:18: In file included from drivers/gpu/drm/i915/gt/uc/intel_uc.h:10: drivers/gpu/drm/i915/gt/uc/intel_guc_submission.h:24:72: warning: unused parameter 'guc' [-Wunused-parameter] static inline bool intel_guc_submission_is_supported(struct intel_guc *guc) ^ In file included from drivers/gpu/drm/i915/gem/i915_gem_ttm.c:9: In file included from drivers/gpu/drm/i915/i915_drv.h:101: drivers/gpu/drm/i915/i915_gpu_error.h:276:43: warning: unused parameter 'gt' [-Wunused-parameter] i915_capture_error_state(struct intel_gt *gt, intel_engine_mask_t engine_mask) ^ drivers/gpu/drm/i915/i915_gpu_error.h:276:67: warning: unused parameter 'engine_mask' [-Wunused-parameter] i915_capture_error_state(struct intel_gt *gt, intel_engine_mask_t engine_mask) ^ drivers/gpu/drm/i915/i915_gpu_error.h:281:50: warning: unused parameter 'i915' [-Wunused-parameter] i915_gpu_coredump_alloc(struct drm_i915_private *i915, gfp_t gfp) ^ drivers/gpu/drm/i915/i915_gpu_error.h:281:62: warning: unused parameter 'gfp' [-Wunused-parameter] i915_gpu_coredump_alloc(struct drm_i915_private *i915, gfp_t gfp) ^ drivers/gpu/drm/i915/i915_gpu_error.h:287:42: warning: unused parameter 'gt' [-Wunused-parameter] intel_gt_coredump_alloc(struct intel_gt *gt, gfp_t gfp) ^ drivers/gpu/drm/i915/i915_gpu_error.h:287:52: warning: unused parameter 'gfp' [-Wunused-parameter] intel_gt_coredump_alloc(struct intel_gt *gt, gfp_t gfp) ^ drivers/gpu/drm/i915/i915_gpu_error.h:293:53: warning: unused parameter 'engine' [-Wunused-parameter] intel_engine_coredump_alloc(struct intel_engine_cs *engine, gfp_t gfp) ^ drivers/gpu/drm/i915/i915_gpu_error.h:293:67: warning: unused parameter 'gfp' [-Wunused-parameter] intel_engine_coredump_alloc(struct intel_engine_cs *engine, gfp_t gfp) ^ drivers/gpu/drm/i915/i915_gpu_error.h:299:65: warning: unused parameter 'ee' [-Wunused-parameter] intel_engine_coredump_add_request(struct intel_engine_coredump *ee, ^ drivers/gpu/drm/i915/i915_gpu_error.h:300:28: warning: unused parameter 'rq' [-Wunused-parameter] struct i915_request *rq, ^ drivers/gpu/drm/i915/i915_gpu_error.h:301:13: warning: unused parameter 'gfp' [-Wunused-parameter] gfp_t gfp) ^ drivers/gpu/drm/i915/i915_gpu_error.h:307:61: warning: unused parameter 'ee' [-Wunused-parameter] intel_engine_coredump_add_vma(struct intel_engine_coredump *ee, ^ drivers/gpu/drm/i915/i915_gpu_error.h:308:43: warning: unused parameter 'capture' [-Wunused-parameter] struct intel_engine_capture_vma *capture, ^ drivers/gpu/drm/i915/i915_gpu_error.h:309:36: warning: unused parameter 'compress' [-Wunused-parameter] struct i915_vma_compress *compress) ^ drivers/gpu/drm/i915/i915_gpu_error.h:314:52: warning: unused parameter 'gt' [-Wunused-parameter] i915_vma_capture_prepare(struct intel_gt_coredump *gt) ^ drivers/gpu/drm/i915/i915_gpu_error.h:320:51: warning: unused parameter 'gt' [-Wunused-parameter] i915_vma_capture_finish(struct intel_gt_coredump *gt, ^ drivers/gpu/drm/i915/i915_gpu_error.h:321:30: warning: unused parameter 'compress' [-Wunused-parameter] struct i915_vma_compress *compress) ^ drivers/gpu/drm/i915/i915_gpu_error.h:326:50: warning: unused parameter 'error' [-Wunused-parameter] i915_error_state_store(struct i915_gpu_coredump *error) ^ drivers/gpu/drm/i915/i915_gpu_error.h:330:68: warning: unused parameter 'gpu' [-Wunused-parameter] static inline void i915_gpu_coredump_put(struct i915_gpu_coredump *gpu) ^ drivers/gpu/drm/i915/i915_gpu_error.h:335:49: warning: unused parameter 'i915' [-Wunused-parameter] i915_first_error_state(struct drm_i915_private *i915) ^ drivers/gpu/drm/i915/i915_gpu_error.h:340:68: warning: unused parameter 'i915' [-Wunused-parameter] static inline void i915_reset_error_state(struct drm_i915_private *i915) ^ drivers/gpu/drm/i915/i915_gpu_error.h:344:70: warning: unused parameter 'i915' [-Wunused-parameter] static inline void i915_disable_error_state(struct drm_i915_private *i915, ^ drivers/gpu/drm/i915/i915_gpu_error.h:345:14: warning: unused parameter 'err' [-Wunused-parameter] int err) ^ static void i915_ttm_evict_flags(struct ttm_buffer_object *bo, ^ static int i915_ttm_move(struct ttm_buffer_object *bo, bool evict, ^ struct ttm_place *hop) ^ struct sg_table *st) ^ 1566 warnings and 1 error generated. vim +/bo +137 drivers/gpu/drm/i915/gem/i915_gem_ttm.c 136 138 struct ttm_placement *placement) 139 { 140 *placement = i915_sys_placement; 141 } 142 143 static int i915_ttm_move_notify(struct ttm_buffer_object *bo) 144 { 145 struct drm_i915_gem_object *obj = i915_ttm_to_gem(bo); 146 int ret; 147 148 ret = i915_gem_object_unbind(obj, I915_GEM_OBJECT_UNBIND_ACTIVE); 149 if (ret) 150 return ret; 151 152 ret = __i915_gem_object_put_pages(obj); 153 if (ret) 154 return ret; 155 156 return 0; 157 } 158 159 static void i915_ttm_free_cached_io_st(struct drm_i915_gem_object *obj) 160 { 161 if (obj->ttm.cached_io_st) { 162 sg_free_table(obj->ttm.cached_io_st); 163 kfree(obj->ttm.cached_io_st); 164 obj->ttm.cached_io_st = NULL; 165 } 166 } 167 168 static void i915_ttm_purge(struct drm_i915_gem_object *obj) 169 { 170 struct ttm_buffer_object *bo = i915_gem_to_ttm(obj); 171 struct ttm_operation_ctx ctx = { 172 .interruptible = true, 173 .no_wait_gpu = false, 174 }; 175 struct ttm_placement place = {}; 176 int ret; 177 178 if (obj->mm.madv == __I915_MADV_PURGED) 179 return; 180 181 /* TTM's purge interface. Note that we might be reentering. */ 182 ret = ttm_bo_validate(bo, &place, &ctx); 183 184 if (!ret) { 185 i915_ttm_free_cached_io_st(obj); 186 obj->mm.madv = __I915_MADV_PURGED; 187 } 188 } 189 190 static void i915_ttm_swap_notify(struct ttm_buffer_object *bo) 191 { 192 struct drm_i915_gem_object *obj = i915_ttm_to_gem(bo); 193 int ret = i915_ttm_move_notify(bo); 194 195 GEM_WARN_ON(ret); 196 GEM_WARN_ON(obj->ttm.cached_io_st); 197 if (!ret && obj->mm.madv != I915_MADV_WILLNEED) 198 i915_ttm_purge(obj); 199 } 200 201 static void i915_ttm_delete_mem_notify(struct ttm_buffer_object *bo) 202 { 203 struct drm_i915_gem_object *obj = i915_ttm_to_gem(bo); 204 205 if (likely(obj)) { 206 /* This releases all gem object bindings to the backend. */ 207 __i915_gem_free_object(obj); 208 } 209 } 210 211 static struct intel_memory_region * 212 i915_ttm_region(struct ttm_device *bdev, int ttm_mem_type) 213 { 214 struct drm_i915_private *i915 = container_of(bdev, typeof(*i915), bdev); 215 216 /* There's some room for optimization here... */ 217 GEM_BUG_ON(ttm_mem_type != I915_PL_SYSTEM && 218 ttm_mem_type < I915_PL_LMEM0); 219 if (ttm_mem_type == I915_PL_SYSTEM) 220 return intel_memory_region_lookup(i915, INTEL_MEMORY_SYSTEM, 221 0); 222 223 return intel_memory_region_lookup(i915, INTEL_MEMORY_LOCAL, 224 ttm_mem_type - I915_PL_LMEM0); 225 } 226 227 static struct sg_table *i915_ttm_tt_get_st(struct ttm_tt *ttm) 228 { 229 struct i915_ttm_tt *i915_tt = container_of(ttm, typeof(*i915_tt), ttm); 230 struct scatterlist *sg; 231 struct sg_table *st; 232 int ret; 233 234 if (i915_tt->cached_st) 235 return i915_tt->cached_st; 236 237 st = kzalloc(sizeof(*st), GFP_KERNEL); 238 if (!st) 239 return ERR_PTR(-ENOMEM); 240 241 sg = __sg_alloc_table_from_pages 242 (st, ttm->pages, ttm->num_pages, 0, 243 (unsigned long)ttm->num_pages << PAGE_SHIFT, 244 i915_sg_segment_size(), NULL, 0, GFP_KERNEL); 245 if (IS_ERR(sg)) { 246 kfree(st); 247 return ERR_CAST(sg); 248 } 249 250 ret = dma_map_sgtable(i915_tt->dev, st, DMA_BIDIRECTIONAL, 0); 251 if (ret) { 252 sg_free_table(st); 253 kfree(st); 254 return ERR_PTR(ret); 255 } 256 257 i915_tt->cached_st = st; 258 return st; 259 } 260 261 static struct sg_table * 262 i915_ttm_resource_get_st(struct drm_i915_gem_object *obj, 263 struct ttm_resource *res) 264 { 265 struct ttm_buffer_object *bo = i915_gem_to_ttm(obj); 266 struct ttm_resource_manager *man = 267 ttm_manager_type(bo->bdev, res->mem_type); 268 269 if (man->use_tt) 270 return i915_ttm_tt_get_st(bo->ttm); 271 272 return intel_region_ttm_node_to_st(obj->mm.region, res); 273 } 274 276 struct ttm_operation_ctx *ctx, 277 struct ttm_resource *dst_mem, 279 { 280 struct drm_i915_gem_object *obj = i915_ttm_to_gem(bo); 281 struct ttm_resource_manager *dst_man = 282 ttm_manager_type(bo->bdev, dst_mem->mem_type); 283 struct ttm_resource_manager *src_man = 284 ttm_manager_type(bo->bdev, bo->resource->mem_type); 285 struct intel_memory_region *dst_reg, *src_reg; 286 union { 287 struct ttm_kmap_iter_tt tt; 288 struct ttm_kmap_iter_iomap io; 289 } _dst_iter, _src_iter; 290 struct ttm_kmap_iter *dst_iter, *src_iter; 291 struct sg_table *dst_st; 292 int ret; 293 294 dst_reg = i915_ttm_region(bo->bdev, dst_mem->mem_type); 295 src_reg = i915_ttm_region(bo->bdev, bo->resource->mem_type); 296 GEM_BUG_ON(!dst_reg || !src_reg); 297 298 /* Sync for now. We could do the actual copy async. */ 299 ret = ttm_bo_wait_ctx(bo, ctx); 300 if (ret) 301 return ret; 302 303 ret = i915_ttm_move_notify(bo); 304 if (ret) 305 return ret; 306 307 if (obj->mm.madv != I915_MADV_WILLNEED) { 308 i915_ttm_purge(obj); 309 ttm_resource_free(bo, &dst_mem); 310 return 0; 311 } 312 313 /* Populate ttm with pages if needed. Typically system memory. */ 314 if (bo->ttm && (dst_man->use_tt || 315 (bo->ttm->page_flags & TTM_PAGE_FLAG_SWAPPED))) { 316 ret = ttm_tt_populate(bo->bdev, bo->ttm, ctx); 317 if (ret) 318 return ret; 319 } 320 321 dst_st = i915_ttm_resource_get_st(obj, dst_mem); 322 if (IS_ERR(dst_st)) 323 return PTR_ERR(dst_st); 324 325 /* If we start mapping GGTT, we can no longer use man::use_tt here. */ 326 dst_iter = dst_man->use_tt ? 327 ttm_kmap_iter_tt_init(&_dst_iter.tt, bo->ttm) : 328 ttm_kmap_iter_iomap_init(&_dst_iter.io, &dst_reg->iomap, 329 dst_st, dst_reg->region.start); 330 331 src_iter = src_man->use_tt ? 332 ttm_kmap_iter_tt_init(&_src_iter.tt, bo->ttm) : 333 ttm_kmap_iter_iomap_init(&_src_iter.io, &src_reg->iomap, 334 obj->ttm.cached_io_st, 335 src_reg->region.start); 336 337 ttm_move_memcpy(bo, dst_mem->num_pages, dst_iter, src_iter); 338 ttm_bo_move_sync_cleanup(bo, dst_mem); 339 i915_ttm_free_cached_io_st(obj); 340 341 if (!dst_man->use_tt) 342 obj->ttm.cached_io_st = dst_st; 343 344 return 0; 345 } 346 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org