drm/radeon: remove resource accounting v2

Use the one provided by TTM instead.

v2: drop new_mem parameter as well
Signed-off-by: Christian König <christian.koenig@amd.com>
Tested-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220214093439.2989-5-christian.koenig@amd.com

drivers/gpu/drm/radeon/radeon.h

@@ -2462,8 +2462,6 @@ struct radeon_device {
 	struct radeon_vm_manager	vm_manager;
 	struct mutex			gpu_clock_mutex;
 	/* memory stats */
-	atomic64_t			vram_usage;
-	atomic64_t			gtt_usage;
 	atomic64_t			num_bytes_moved;
 	atomic_t			gpu_reset_counter;
 	/* ACPI interface */

drivers/gpu/drm/radeon/radeon_kms.c

@@ -241,6 +241,7 @@ int radeon_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
 	struct drm_radeon_info *info = data;
 	struct radeon_mode_info *minfo = &rdev->mode_info;
 	uint32_t *value, value_tmp, *value_ptr, value_size;
+	struct ttm_resource_manager *man;
 	uint64_t value64;
 	struct drm_crtc *crtc;
 	int i, found;
@@ -550,12 +551,14 @@ int radeon_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
 	case RADEON_INFO_VRAM_USAGE:
 		value = (uint32_t*)&value64;
 		value_size = sizeof(uint64_t);
-		value64 = atomic64_read(&rdev->vram_usage);
+		man = ttm_manager_type(&rdev->mman.bdev, TTM_PL_VRAM);
+		value64 = ttm_resource_manager_usage(man);
 		break;
 	case RADEON_INFO_GTT_USAGE:
 		value = (uint32_t*)&value64;
 		value_size = sizeof(uint64_t);
-		value64 = atomic64_read(&rdev->gtt_usage);
+		man = ttm_manager_type(&rdev->mman.bdev, TTM_PL_TT);
+		value64 = ttm_resource_manager_usage(man);
 		break;
 	case RADEON_INFO_ACTIVE_CU_COUNT:
 		if (rdev->family >= CHIP_BONAIRE)

drivers/gpu/drm/radeon/radeon_object.c

@@ -49,27 +49,6 @@ static void radeon_bo_clear_surface_reg(struct radeon_bo *bo);
  * function are calling it.
  */
 
-static void radeon_update_memory_usage(struct ttm_buffer_object *bo,
-				       unsigned int mem_type, int sign)
-{
-	struct radeon_device *rdev = radeon_get_rdev(bo->bdev);
-
-	switch (mem_type) {
-	case TTM_PL_TT:
-		if (sign > 0)
-			atomic64_add(bo->base.size, &rdev->gtt_usage);
-		else
-			atomic64_sub(bo->base.size, &rdev->gtt_usage);
-		break;
-	case TTM_PL_VRAM:
-		if (sign > 0)
-			atomic64_add(bo->base.size, &rdev->vram_usage);
-		else
-			atomic64_sub(bo->base.size, &rdev->vram_usage);
-		break;
-	}
-}
-
 static void radeon_ttm_bo_destroy(struct ttm_buffer_object *tbo)
 {
 	struct radeon_bo *bo;
@@ -434,7 +413,9 @@ void radeon_bo_fini(struct radeon_device *rdev)
 static u64 radeon_bo_get_threshold_for_moves(struct radeon_device *rdev)
 {
 	u64 real_vram_size = rdev->mc.real_vram_size;
-	u64 vram_usage = atomic64_read(&rdev->vram_usage);
+	struct ttm_resource_manager *man =
+		ttm_manager_type(&rdev->mman.bdev, TTM_PL_VRAM);
+	u64 vram_usage = ttm_resource_manager_usage(man);
 
 	/* This function is based on the current VRAM usage.
 	 *
@@ -724,16 +705,10 @@ int radeon_bo_check_tiling(struct radeon_bo *bo, bool has_moved,
 	return radeon_bo_get_surface_reg(bo);
 }
 
-void radeon_bo_move_notify(struct ttm_buffer_object *bo,
-			   unsigned int old_type,
-			   struct ttm_resource *new_mem)
+void radeon_bo_move_notify(struct ttm_buffer_object *bo)
 {
 	struct radeon_bo *rbo;
 
-	radeon_update_memory_usage(bo, old_type, -1);
-	if (new_mem)
-		radeon_update_memory_usage(bo, new_mem->mem_type, 1);
-
 	if (!radeon_ttm_bo_is_radeon_bo(bo))
 		return;
 

drivers/gpu/drm/radeon/radeon_object.h

@@ -160,9 +160,7 @@ extern void radeon_bo_get_tiling_flags(struct radeon_bo *bo,
 				u32 *tiling_flags, u32 *pitch);
 extern int radeon_bo_check_tiling(struct radeon_bo *bo, bool has_moved,
 				bool force_drop);
-extern void radeon_bo_move_notify(struct ttm_buffer_object *bo,
-				  unsigned int old_type,
-				  struct ttm_resource *new_mem);
+extern void radeon_bo_move_notify(struct ttm_buffer_object *bo);
 extern vm_fault_t radeon_bo_fault_reserve_notify(struct ttm_buffer_object *bo);
 extern int radeon_bo_get_surface_reg(struct radeon_bo *bo);
 extern void radeon_bo_fence(struct radeon_bo *bo, struct radeon_fence *fence,

drivers/gpu/drm/radeon/radeon_ttm.c

@@ -199,7 +199,7 @@ static int radeon_bo_move(struct ttm_buffer_object *bo, bool evict,
 	struct ttm_resource *old_mem = bo->resource;
 	struct radeon_device *rdev;
 	struct radeon_bo *rbo;
-	int r, old_type;
+	int r;
 
 	if (new_mem->mem_type == TTM_PL_TT) {
 		r = radeon_ttm_tt_bind(bo->bdev, bo->ttm, new_mem);
@@ -216,9 +216,6 @@ static int radeon_bo_move(struct ttm_buffer_object *bo, bool evict,
 	if (WARN_ON_ONCE(rbo->tbo.pin_count > 0))
 		return -EINVAL;
 
-	/* Save old type for statistics update */
-	old_type = old_mem->mem_type;
-
 	rdev = radeon_get_rdev(bo->bdev);
 	if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) {
 		ttm_bo_move_null(bo, new_mem);
@@ -264,7 +261,7 @@ static int radeon_bo_move(struct ttm_buffer_object *bo, bool evict,
 out:
 	/* update statistics */
 	atomic64_add(bo->base.size, &rdev->num_bytes_moved);
-	radeon_bo_move_notify(bo, old_type, new_mem);
+	radeon_bo_move_notify(bo);
 	return 0;
 }
 
@@ -679,16 +676,6 @@ bool radeon_ttm_tt_is_readonly(struct radeon_device *rdev,
 	return !!(gtt->userflags & RADEON_GEM_USERPTR_READONLY);
 }
 
-static void
-radeon_bo_delete_mem_notify(struct ttm_buffer_object *bo)
-{
-	unsigned int old_type = TTM_PL_SYSTEM;
-
-	if (bo->resource)
-		old_type = bo->resource->mem_type;
-	radeon_bo_move_notify(bo, old_type, NULL);
-}
-
 static struct ttm_device_funcs radeon_bo_driver = {
 	.ttm_tt_create = &radeon_ttm_tt_create,
 	.ttm_tt_populate = &radeon_ttm_tt_populate,
@@ -697,7 +684,6 @@ static struct ttm_device_funcs radeon_bo_driver = {
 	.eviction_valuable = ttm_bo_eviction_valuable,
 	.evict_flags = &radeon_evict_flags,
 	.move = &radeon_bo_move,
-	.delete_mem_notify = &radeon_bo_delete_mem_notify,
 	.io_mem_reserve = &radeon_ttm_io_mem_reserve,
 };