Hi Arunpravin, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on drm/drm-next] [also build test WARNING on drm-tip/drm-tip] [cannot apply to drm-intel/for-linux-next v5.17-rc6 next-20220301] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/0day-ci/linux/commits/Arunpravin/drm-amdgpu-add-drm-buddy-support-to-amdgpu/20220302-043936 base: git://anongit.freedesktop.org/drm/drm drm-next config: ia64-randconfig-r011-20220301 (https://download.01.org/0day-ci/archive/20220302/202203020700.yfCUTgQZ-lkp@xxxxxxxxx/config) compiler: ia64-linux-gcc (GCC) 11.2.0 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://github.com/0day-ci/linux/commit/22a06757ae067e29c09a9d95eaf2b9053833740f git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Arunpravin/drm-amdgpu-add-drm-buddy-support-to-amdgpu/20220302-043936 git checkout 22a06757ae067e29c09a9d95eaf2b9053833740f # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=ia64 SHELL=/bin/bash drivers/gpu/drm/amd/amdgpu/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c: In function 'amdgpu_vram_mgr_new': >> drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c:360:28: warning: variable 'mem_bytes' set but not used [-Wunused-but-set-variable] 360 | u64 vis_usage = 0, mem_bytes, max_bytes, min_page_size; | ^~~~~~~~~ vim +/mem_bytes +360 drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c 343 344 /** 345 * amdgpu_vram_mgr_new - allocate new ranges 346 * 347 * @man: TTM memory type manager 348 * @tbo: TTM BO we need this range for 349 * @place: placement flags and restrictions 350 * @res: the resulting mem object 351 * 352 * Allocate VRAM for the given BO. 353 */ 354 static int amdgpu_vram_mgr_new(struct ttm_resource_manager *man, 355 struct ttm_buffer_object *tbo, 356 const struct ttm_place *place, 357 struct ttm_resource **res) 358 { 359 unsigned long lpfn, pages_per_node, pages_left, pages; > 360 u64 vis_usage = 0, mem_bytes, max_bytes, min_page_size; 361 struct amdgpu_vram_mgr *mgr = to_vram_mgr(man); 362 struct amdgpu_device *adev = to_amdgpu_device(mgr); 363 struct amdgpu_vram_mgr_node *node; 364 struct drm_buddy *mm = &mgr->mm; 365 struct drm_buddy_block *block; 366 unsigned i; 367 int r; 368 369 lpfn = place->lpfn; 370 if (!lpfn) 371 lpfn = man->size >> PAGE_SHIFT; 372 373 max_bytes = adev->gmc.mc_vram_size; 374 if (tbo->type != ttm_bo_type_kernel) 375 max_bytes -= AMDGPU_VM_RESERVED_VRAM; 376 377 mem_bytes = tbo->base.size; 378 if (place->flags & TTM_PL_FLAG_CONTIGUOUS) { 379 pages_per_node = ~0ul; 380 } else { 381 #ifdef CONFIG_TRANSPARENT_HUGEPAGE 382 pages_per_node = HPAGE_PMD_NR; 383 #else 384 /* default to 2MB */ 385 pages_per_node = 2UL << (20UL - PAGE_SHIFT); 386 #endif 387 pages_per_node = max_t(uint32_t, pages_per_node, 388 tbo->page_alignment); 389 } 390 391 node = kzalloc(sizeof(*node), GFP_KERNEL); 392 if (!node) 393 return -ENOMEM; 394 395 ttm_resource_init(tbo, place, &node->base); 396 397 /* bail out quickly if there's likely not enough VRAM for this BO */ 398 if (ttm_resource_manager_usage(man) > max_bytes) { 399 r = -ENOSPC; 400 goto error_fini; 401 } 402 403 INIT_LIST_HEAD(&node->blocks); 404 405 if (place->flags & TTM_PL_FLAG_TOPDOWN) 406 node->flags |= DRM_BUDDY_TOPDOWN_ALLOCATION; 407 408 if (place->fpfn || lpfn != man->size >> PAGE_SHIFT) 409 /* Allocate blocks in desired range */ 410 node->flags |= DRM_BUDDY_RANGE_ALLOCATION; 411 412 BUG_ON(!node->base.num_pages); 413 pages_left = node->base.num_pages; 414 415 i = 0; 416 while (pages_left) { 417 if (tbo->page_alignment) 418 min_page_size = tbo->page_alignment << PAGE_SHIFT; 419 else 420 min_page_size = mgr->default_page_size; 421 422 /* Limit maximum size to 2GB due to SG table limitations */ 423 pages = min(pages_left, 2UL << (30 - PAGE_SHIFT)); 424 425 if (pages >= pages_per_node) 426 min_page_size = pages_per_node << PAGE_SHIFT; 427 428 if (place->flags & TTM_PL_FLAG_CONTIGUOUS) { 429 pages = roundup_pow_of_two(pages); 430 min_page_size = pages << PAGE_SHIFT; 431 432 if (pages > lpfn) 433 lpfn = pages; 434 } 435 436 BUG_ON(min_page_size < mm->chunk_size); 437 438 mutex_lock(&mgr->lock); 439 r = drm_buddy_alloc_blocks(mm, (u64)place->fpfn << PAGE_SHIFT, 440 (u64)lpfn << PAGE_SHIFT, 441 (u64)pages << PAGE_SHIFT, 442 min_page_size, 443 &node->blocks, 444 node->flags); 445 mutex_unlock(&mgr->lock); 446 if (unlikely(r)) 447 goto error_free_blocks; 448 449 ++i; 450 451 if (pages > pages_left) 452 pages_left = 0; 453 else 454 pages_left -= pages; 455 } 456 457 /* Free unused pages for contiguous allocation */ 458 if (place->flags & TTM_PL_FLAG_CONTIGUOUS) { 459 u64 actual_size = (u64)node->base.num_pages << PAGE_SHIFT; 460 461 mutex_lock(&mgr->lock); 462 drm_buddy_block_trim(mm, 463 actual_size, 464 &node->blocks); 465 mutex_unlock(&mgr->lock); 466 } 467 468 list_for_each_entry(block, &node->blocks, link) 469 vis_usage += amdgpu_vram_mgr_vis_size(adev, block); 470 471 block = amdgpu_get_node(&node->blocks); 472 if (!block) { 473 r = -EINVAL; 474 goto error_fini; 475 } 476 477 node->base.start = amdgpu_node_start(block) >> PAGE_SHIFT; 478 479 if (i == 1 && place->flags & TTM_PL_FLAG_CONTIGUOUS) 480 node->base.placement |= TTM_PL_FLAG_CONTIGUOUS; 481 482 if (adev->gmc.xgmi.connected_to_cpu) 483 node->base.bus.caching = ttm_cached; 484 else 485 node->base.bus.caching = ttm_write_combined; 486 487 atomic64_add(vis_usage, &mgr->vis_usage); 488 *res = &node->base; 489 return 0; 490 491 error_free_blocks: 492 mutex_lock(&mgr->lock); 493 drm_buddy_free_list(mm, &node->blocks); 494 mutex_unlock(&mgr->lock); 495 error_fini: 496 ttm_resource_fini(man, &node->base); 497 kfree(node); 498 499 return r; 500 } 501 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
