diff options
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/ttm/ttm_resource.c | 92 | ||||
| -rw-r--r-- | drivers/gpu/drm/xe/xe_vm.c | 4 | ||||
| -rw-r--r-- | include/drm/ttm/ttm_resource.h | 56 |
4 files changed, 135 insertions, 21 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c index 4e2391c83d7c..6293f3b54b4a 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c @@ -2422,6 +2422,8 @@ int amdgpu_vm_init(struct amdgpu_device *adev, struct amdgpu_vm *vm, if (r) return r; + ttm_lru_bulk_move_init(&vm->lru_bulk_move); + vm->is_compute_context = false; vm->use_cpu_for_update = !!(adev->vm_manager.vm_update_mode & @@ -2486,6 +2488,7 @@ error_free_root: error_free_delayed: dma_fence_put(vm->last_tlb_flush); dma_fence_put(vm->last_unlocked); + ttm_lru_bulk_move_fini(&adev->mman.bdev, &vm->lru_bulk_move); amdgpu_vm_fini_entities(vm); return r; @@ -2642,6 +2645,7 @@ void amdgpu_vm_fini(struct amdgpu_device *adev, struct amdgpu_vm *vm) } } + ttm_lru_bulk_move_fini(&adev->mman.bdev, &vm->lru_bulk_move); } /** diff --git a/drivers/gpu/drm/ttm/ttm_resource.c b/drivers/gpu/drm/ttm/ttm_resource.c index 9c8b6499edfb..b6a2daac5518 100644 --- a/drivers/gpu/drm/ttm/ttm_resource.c +++ b/drivers/gpu/drm/ttm/ttm_resource.c @@ -33,6 +33,53 @@ #include <drm/drm_util.h> +/* Detach the cursor from the bulk move list*/ +static void +ttm_resource_cursor_clear_bulk(struct ttm_resource_cursor *cursor) +{ + lockdep_assert_held(&cursor->man->bdev->lru_lock); + + cursor->bulk = NULL; + list_del_init(&cursor->bulk_link); +} + +/* Move the cursor to the end of the bulk move list it's in */ +static void ttm_resource_cursor_move_bulk_tail(struct ttm_lru_bulk_move *bulk, + struct ttm_resource_cursor *cursor) +{ + struct ttm_lru_bulk_move_pos *pos; + + lockdep_assert_held(&cursor->man->bdev->lru_lock); + + if (WARN_ON_ONCE(bulk != cursor->bulk)) { + list_del_init(&cursor->bulk_link); + return; + } + + pos = &bulk->pos[cursor->mem_type][cursor->priority]; + if (pos->last) + list_move(&cursor->hitch.link, &pos->last->lru.link); + ttm_resource_cursor_clear_bulk(cursor); +} + +/* Move all cursors attached to a bulk move to its end */ +static void ttm_bulk_move_adjust_cursors(struct ttm_lru_bulk_move *bulk) +{ + struct ttm_resource_cursor *cursor, *next; + + list_for_each_entry_safe(cursor, next, &bulk->cursor_list, bulk_link) + ttm_resource_cursor_move_bulk_tail(bulk, cursor); +} + +/* Remove a cursor from an empty bulk move list */ +static void ttm_bulk_move_drop_cursors(struct ttm_lru_bulk_move *bulk) +{ + struct ttm_resource_cursor *cursor, *next; + + list_for_each_entry_safe(cursor, next, &bulk->cursor_list, bulk_link) + ttm_resource_cursor_clear_bulk(cursor); +} + /** * ttm_resource_cursor_fini_locked() - Finalize the LRU list cursor usage * @cursor: The struct ttm_resource_cursor to finalize. @@ -45,6 +92,7 @@ void ttm_resource_cursor_fini_locked(struct ttm_resource_cursor *cursor) { lockdep_assert_held(&cursor->man->bdev->lru_lock); list_del_init(&cursor->hitch.link); + ttm_resource_cursor_clear_bulk(cursor); } /** @@ -73,10 +121,28 @@ void ttm_resource_cursor_fini(struct ttm_resource_cursor *cursor) void ttm_lru_bulk_move_init(struct ttm_lru_bulk_move *bulk) { memset(bulk, 0, sizeof(*bulk)); + INIT_LIST_HEAD(&bulk->cursor_list); } EXPORT_SYMBOL(ttm_lru_bulk_move_init); /** + * ttm_lru_bulk_move_fini - finalize a bulk move structure + * @bdev: The struct ttm_device + * @bulk: the structure to finalize + * + * Sanity checks that bulk moves don't have any + * resources left and hence no cursors attached. + */ +void ttm_lru_bulk_move_fini(struct ttm_device *bdev, + struct ttm_lru_bulk_move *bulk) +{ + spin_lock(&bdev->lru_lock); + ttm_bulk_move_drop_cursors(bulk); + spin_unlock(&bdev->lru_lock); +} +EXPORT_SYMBOL(ttm_lru_bulk_move_fini); + +/** * ttm_lru_bulk_move_tail - bulk move range of resources to the LRU tail. * * @bulk: bulk move structure @@ -88,6 +154,7 @@ void ttm_lru_bulk_move_tail(struct ttm_lru_bulk_move *bulk) { unsigned i, j; + ttm_bulk_move_adjust_cursors(bulk); for (i = 0; i < TTM_NUM_MEM_TYPES; ++i) { for (j = 0; j < TTM_MAX_BO_PRIORITY; ++j) { struct ttm_lru_bulk_move_pos *pos = &bulk->pos[i][j]; @@ -515,6 +582,28 @@ void ttm_resource_manager_debug(struct ttm_resource_manager *man, } EXPORT_SYMBOL(ttm_resource_manager_debug); +static void +ttm_resource_cursor_check_bulk(struct ttm_resource_cursor *cursor, + struct ttm_lru_item *next_lru) +{ + struct ttm_resource *next = ttm_lru_item_to_res(next_lru); + struct ttm_lru_bulk_move *bulk = NULL; + struct ttm_buffer_object *bo = next->bo; + + lockdep_assert_held(&cursor->man->bdev->lru_lock); + bulk = bo->bulk_move; + + if (cursor->bulk != bulk) { + if (bulk) { + list_move_tail(&cursor->bulk_link, &bulk->cursor_list); + cursor->mem_type = next->mem_type; + } else { + list_del_init(&cursor->bulk_link); + } + cursor->bulk = bulk; + } +} + /** * ttm_resource_manager_first() - Start iterating over the resources * of a resource manager @@ -535,6 +624,7 @@ ttm_resource_manager_first(struct ttm_resource_manager *man, cursor->priority = 0; cursor->man = man; ttm_lru_item_init(&cursor->hitch, TTM_LRU_HITCH); + INIT_LIST_HEAD(&cursor->bulk_link); list_add(&cursor->hitch.link, &man->lru[cursor->priority]); return ttm_resource_manager_next(cursor); @@ -559,6 +649,7 @@ ttm_resource_manager_next(struct ttm_resource_cursor *cursor) lru = &cursor->hitch; list_for_each_entry_continue(lru, &man->lru[cursor->priority], link) { if (ttm_lru_item_is_res(lru)) { + ttm_resource_cursor_check_bulk(cursor, lru); list_move(&cursor->hitch.link, &lru->link); return ttm_lru_item_to_res(lru); } @@ -568,6 +659,7 @@ ttm_resource_manager_next(struct ttm_resource_cursor *cursor) break; list_move(&cursor->hitch.link, &man->lru[cursor->priority]); + ttm_resource_cursor_clear_bulk(cursor); } ttm_resource_cursor_fini_locked(cursor); diff --git a/drivers/gpu/drm/xe/xe_vm.c b/drivers/gpu/drm/xe/xe_vm.c index 4aa3943e6f29..47b737f10e74 100644 --- a/drivers/gpu/drm/xe/xe_vm.c +++ b/drivers/gpu/drm/xe/xe_vm.c @@ -1252,6 +1252,8 @@ struct xe_vm *xe_vm_create(struct xe_device *xe, u32 flags) init_rwsem(&vm->userptr.notifier_lock); spin_lock_init(&vm->userptr.invalidated_lock); + ttm_lru_bulk_move_init(&vm->lru_bulk_move); + INIT_LIST_HEAD(&vm->preempt.exec_queues); vm->preempt.min_run_period_ms = 10; /* FIXME: Wire up to uAPI */ @@ -1369,6 +1371,7 @@ err_no_resv: mutex_destroy(&vm->snap_mutex); for_each_tile(tile, xe, id) xe_range_fence_tree_fini(&vm->rftree[id]); + ttm_lru_bulk_move_fini(&xe->ttm, &vm->lru_bulk_move); kfree(vm); if (!(flags & XE_VM_FLAG_MIGRATION)) xe_pm_runtime_put(xe); @@ -1511,6 +1514,7 @@ static void xe_vm_free(struct drm_gpuvm *gpuvm) XE_WARN_ON(vm->pt_root[id]); trace_xe_vm_free(vm); + ttm_lru_bulk_move_fini(&xe->ttm, &vm->lru_bulk_move); kfree(vm); } diff --git a/include/drm/ttm/ttm_resource.h b/include/drm/ttm/ttm_resource.h index 8fac781f641e..571abb4861a6 100644 --- a/include/drm/ttm/ttm_resource.h +++ b/include/drm/ttm/ttm_resource.h @@ -270,26 +270,6 @@ ttm_lru_item_to_res(struct ttm_lru_item *item) } /** - * struct ttm_resource_cursor - * - * @man: The resource manager currently being iterated over. - * @hitch: A hitch list node inserted before the next resource - * to iterate over. - * @priority: the current priority - * - * Cursor to iterate over the resources in a manager. - */ -struct ttm_resource_cursor { - struct ttm_resource_manager *man; - struct ttm_lru_item hitch; - unsigned int priority; -}; - -void ttm_resource_cursor_fini_locked(struct ttm_resource_cursor *cursor); - -void ttm_resource_cursor_fini(struct ttm_resource_cursor *cursor); - -/** * struct ttm_lru_bulk_move_pos * * @first: first res in the bulk move range @@ -304,8 +284,9 @@ struct ttm_lru_bulk_move_pos { /** * struct ttm_lru_bulk_move - * * @pos: first/last lru entry for resources in the each domain/priority + * @cursor_list: The list of cursors currently traversing any of + * the sublists of @pos. Protected by the ttm device's lru_lock. * * Container for the current bulk move state. Should be used with * ttm_lru_bulk_move_init() and ttm_bo_set_bulk_move(). @@ -315,9 +296,40 @@ struct ttm_lru_bulk_move_pos { */ struct ttm_lru_bulk_move { struct ttm_lru_bulk_move_pos pos[TTM_NUM_MEM_TYPES][TTM_MAX_BO_PRIORITY]; + struct list_head cursor_list; }; /** + * struct ttm_resource_cursor + * @man: The resource manager currently being iterated over + * @hitch: A hitch list node inserted before the next resource + * to iterate over. + * @bulk_link: A list link for the list of cursors traversing the + * bulk sublist of @bulk. Protected by the ttm device's lru_lock. + * @bulk: Pointer to struct ttm_lru_bulk_move whose subrange @hitch is + * inserted to. NULL if none. Never dereference this pointer since + * the struct ttm_lru_bulk_move object pointed to might have been + * freed. The pointer is only for comparison. + * @mem_type: The memory type of the LRU list being traversed. + * This field is valid iff @bulk != NULL. + * @priority: the current priority + * + * Cursor to iterate over the resources in a manager. + */ +struct ttm_resource_cursor { + struct ttm_resource_manager *man; + struct ttm_lru_item hitch; + struct list_head bulk_link; + struct ttm_lru_bulk_move *bulk; + unsigned int mem_type; + unsigned int priority; +}; + +void ttm_resource_cursor_fini_locked(struct ttm_resource_cursor *cursor); + +void ttm_resource_cursor_fini(struct ttm_resource_cursor *cursor); + +/** * struct ttm_kmap_iter_iomap - Specialization for a struct io_mapping + * struct sg_table backed struct ttm_resource. * @base: Embedded struct ttm_kmap_iter providing the usage interface. @@ -405,6 +417,8 @@ ttm_resource_manager_cleanup(struct ttm_resource_manager *man) void ttm_lru_bulk_move_init(struct ttm_lru_bulk_move *bulk); void ttm_lru_bulk_move_tail(struct ttm_lru_bulk_move *bulk); +void ttm_lru_bulk_move_fini(struct ttm_device *bdev, + struct ttm_lru_bulk_move *bulk); void ttm_resource_add_bulk_move(struct ttm_resource *res, struct ttm_buffer_object *bo); |