Re: [PATCH 26/49] drm/ttm: add wrapper to get manager from bdev.

[Christian König <christian.koenig@xxxxxxx>]

Am 31.07.20 um 06:04 schrieb Dave Airlie:
> From: Dave Airlie <airlied@xxxxxxxxxx>
>
> This will allow different abstractions later.

Mhm, I'm questioning if this is really worth it and not just overkill.

Running "sed -i 's/&bdev->man/bdev->man/'" on all drivers when we make 
the switch to a pointer should do it as well.

Christian.

> Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx>
> ---
>   drivers/gpu/drm/ttm/ttm_bo.c      | 34 +++++++++++++++----------------
>   drivers/gpu/drm/ttm/ttm_bo_util.c | 20 +++++++++---------
>   drivers/gpu/drm/ttm/ttm_bo_vm.c   |  2 +-
>   include/drm/ttm/ttm_bo_driver.h   |  6 ++++++
>   4 files changed, 34 insertions(+), 28 deletions(-)
>
> diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c
> index 07c653374f15..7c6389ea067f 100644
> --- a/drivers/gpu/drm/ttm/ttm_bo.c
> +++ b/drivers/gpu/drm/ttm/ttm_bo.c
> @@ -80,7 +80,7 @@ static inline int ttm_mem_type_from_place(const struct ttm_place *place,
>   static void ttm_mem_type_debug(struct ttm_bo_device *bdev, struct drm_printer *p,
>   			       int mem_type)
>   {
> -	struct ttm_mem_type_manager *man = &bdev->man[mem_type];
> +	struct ttm_mem_type_manager *man = ttm_manager_type(bdev, mem_type);
>   
>   	drm_printf(p, "    has_type: %d\n", man->has_type);
>   	drm_printf(p, "    use_type: %d\n", man->use_type);
> @@ -156,7 +156,7 @@ static void ttm_bo_add_mem_to_lru(struct ttm_buffer_object *bo,
>   	if (mem->placement & TTM_PL_FLAG_NO_EVICT)
>   		return;
>   
> -	man = &bdev->man[mem->mem_type];
> +	man = ttm_manager_type(bdev, mem->mem_type);
>   	list_add_tail(&bo->lru, &man->lru[bo->priority]);
>   
>   	if (man->use_tt && bo->ttm &&
> @@ -231,7 +231,7 @@ void ttm_bo_bulk_move_lru_tail(struct ttm_lru_bulk_move *bulk)
>   		dma_resv_assert_held(pos->first->base.resv);
>   		dma_resv_assert_held(pos->last->base.resv);
>   
> -		man = &pos->first->bdev->man[TTM_PL_TT];
> +		man = ttm_manager_type(pos->first->bdev, TTM_PL_TT);
>   		list_bulk_move_tail(&man->lru[i], &pos->first->lru,
>   				    &pos->last->lru);
>   	}
> @@ -246,7 +246,7 @@ void ttm_bo_bulk_move_lru_tail(struct ttm_lru_bulk_move *bulk)
>   		dma_resv_assert_held(pos->first->base.resv);
>   		dma_resv_assert_held(pos->last->base.resv);
>   
> -		man = &pos->first->bdev->man[TTM_PL_VRAM];
> +		man = ttm_manager_type(pos->first->bdev, TTM_PL_VRAM);
>   		list_bulk_move_tail(&man->lru[i], &pos->first->lru,
>   				    &pos->last->lru);
>   	}
> @@ -272,8 +272,8 @@ static int ttm_bo_handle_move_mem(struct ttm_buffer_object *bo,
>   				  struct ttm_operation_ctx *ctx)
>   {
>   	struct ttm_bo_device *bdev = bo->bdev;
> -	struct ttm_mem_type_manager *old_man = &bdev->man[bo->mem.mem_type];
> -	struct ttm_mem_type_manager *new_man = &bdev->man[mem->mem_type];
> +	struct ttm_mem_type_manager *old_man = ttm_manager_type(bdev, bo->mem.mem_type);
> +	struct ttm_mem_type_manager *new_man = ttm_manager_type(bdev, mem->mem_type);
>   	int ret;
>   
>   	ret = ttm_mem_io_lock(old_man, true);
> @@ -338,7 +338,7 @@ static int ttm_bo_handle_move_mem(struct ttm_buffer_object *bo,
>   	return 0;
>   
>   out_err:
> -	new_man = &bdev->man[bo->mem.mem_type];
> +	new_man = ttm_manager_type(bdev, bo->mem.mem_type);
>   	if (!new_man->use_tt) {
>   		ttm_tt_destroy(bo->ttm);
>   		bo->ttm = NULL;
> @@ -550,7 +550,7 @@ static void ttm_bo_release(struct kref *kref)
>   	struct ttm_buffer_object *bo =
>   	    container_of(kref, struct ttm_buffer_object, kref);
>   	struct ttm_bo_device *bdev = bo->bdev;
> -	struct ttm_mem_type_manager *man = &bdev->man[bo->mem.mem_type];
> +	struct ttm_mem_type_manager *man = ttm_manager_type(bdev, bo->mem.mem_type);
>   	size_t acc_size = bo->acc_size;
>   	int ret;
>   
> @@ -838,7 +838,7 @@ static int ttm_bo_mem_get(struct ttm_buffer_object *bo,
>   			  const struct ttm_place *place,
>   			  struct ttm_mem_reg *mem)
>   {
> -	struct ttm_mem_type_manager *man = &bo->bdev->man[mem->mem_type];
> +	struct ttm_mem_type_manager *man = ttm_manager_type(bo->bdev, mem->mem_type);
>   
>   	mem->mm_node = NULL;
>   	if (!man->func || !man->func->get_node)
> @@ -849,7 +849,7 @@ static int ttm_bo_mem_get(struct ttm_buffer_object *bo,
>   
>   void ttm_bo_mem_put(struct ttm_buffer_object *bo, struct ttm_mem_reg *mem)
>   {
> -	struct ttm_mem_type_manager *man = &bo->bdev->man[mem->mem_type];
> +	struct ttm_mem_type_manager *man = ttm_manager_type(bo->bdev, mem->mem_type);
>   
>   	if (!man->func || !man->func->put_node)
>   		return;
> @@ -906,7 +906,7 @@ static int ttm_bo_mem_force_space(struct ttm_buffer_object *bo,
>   				  struct ttm_operation_ctx *ctx)
>   {
>   	struct ttm_bo_device *bdev = bo->bdev;
> -	struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
> +	struct ttm_mem_type_manager *man = ttm_manager_type(bdev, mem->mem_type);
>   	struct ww_acquire_ctx *ticket;
>   	int ret;
>   
> @@ -996,7 +996,7 @@ static int ttm_bo_mem_placement(struct ttm_buffer_object *bo,
>   	if (ret)
>   		return ret;
>   
> -	man = &bdev->man[mem_type];
> +	man = ttm_manager_type(bdev, mem_type);
>   	if (!man->has_type || !man->use_type)
>   		return -EBUSY;
>   
> @@ -1059,7 +1059,7 @@ int ttm_bo_mem_space(struct ttm_buffer_object *bo,
>   		if (unlikely(ret))
>   			goto error;
>   
> -		man = &bdev->man[mem->mem_type];
> +		man = ttm_manager_type(bdev, mem->mem_type);
>   		ret = ttm_bo_add_move_fence(bo, man, mem, ctx->no_wait_gpu);
>   		if (unlikely(ret)) {
>   			ttm_bo_mem_put(bo, mem);
> @@ -1448,7 +1448,7 @@ EXPORT_SYMBOL(ttm_bo_force_list_clean);
>   
>   int ttm_bo_evict_mm(struct ttm_bo_device *bdev, unsigned mem_type)
>   {
> -	struct ttm_mem_type_manager *man = &bdev->man[mem_type];
> +	struct ttm_mem_type_manager *man = ttm_manager_type(bdev, mem_type);
>   
>   	if (mem_type == 0 || mem_type >= TTM_NUM_MEM_TYPES) {
>   		pr_err("Illegal memory manager memory type %u\n", mem_type);
> @@ -1551,7 +1551,7 @@ int ttm_bo_device_release(struct ttm_bo_device *bdev)
>   	unsigned i;
>   	struct ttm_mem_type_manager *man;
>   
> -	man = &bdev->man[TTM_PL_SYSTEM];
> +	man = ttm_manager_type(bdev, TTM_PL_SYSTEM);
>   	ttm_bo_disable_mm(man);
>   
>   	mutex_lock(&ttm_global_mutex);
> @@ -1578,7 +1578,7 @@ EXPORT_SYMBOL(ttm_bo_device_release);
>   
>   static void ttm_bo_init_sysman(struct ttm_bo_device *bdev)
>   {
> -	struct ttm_mem_type_manager *man = &bdev->man[TTM_PL_SYSTEM];
> +	struct ttm_mem_type_manager *man = ttm_manager_type(bdev, TTM_PL_SYSTEM);
>   
>   	/*
>   	 * Initialize the system memory buffer type.
> @@ -1642,7 +1642,7 @@ void ttm_bo_unmap_virtual_locked(struct ttm_buffer_object *bo)
>   void ttm_bo_unmap_virtual(struct ttm_buffer_object *bo)
>   {
>   	struct ttm_bo_device *bdev = bo->bdev;
> -	struct ttm_mem_type_manager *man = &bdev->man[bo->mem.mem_type];
> +	struct ttm_mem_type_manager *man = ttm_manager_type(bdev, bo->mem.mem_type);
>   
>   	ttm_mem_io_lock(man, false);
>   	ttm_bo_unmap_virtual_locked(bo);
> diff --git a/drivers/gpu/drm/ttm/ttm_bo_util.c b/drivers/gpu/drm/ttm/ttm_bo_util.c
> index 1f502be0b646..879c8ded0cd8 100644
> --- a/drivers/gpu/drm/ttm/ttm_bo_util.c
> +++ b/drivers/gpu/drm/ttm/ttm_bo_util.c
> @@ -129,7 +129,7 @@ static int ttm_mem_io_evict(struct ttm_mem_type_manager *man)
>   int ttm_mem_io_reserve(struct ttm_bo_device *bdev,
>   		       struct ttm_mem_reg *mem)
>   {
> -	struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
> +	struct ttm_mem_type_manager *man = ttm_manager_type(bdev, mem->mem_type);
>   	int ret;
>   
>   	if (mem->bus.io_reserved_count++)
> @@ -162,7 +162,7 @@ void ttm_mem_io_free(struct ttm_bo_device *bdev,
>   
>   int ttm_mem_io_reserve_vm(struct ttm_buffer_object *bo)
>   {
> -	struct ttm_mem_type_manager *man = &bo->bdev->man[bo->mem.mem_type];
> +	struct ttm_mem_type_manager *man = ttm_manager_type(bo->bdev, bo->mem.mem_type);
>   	struct ttm_mem_reg *mem = &bo->mem;
>   	int ret;
>   
> @@ -195,7 +195,7 @@ static int ttm_mem_reg_ioremap(struct ttm_bo_device *bdev,
>   			       struct ttm_mem_reg *mem,
>   			       void **virtual)
>   {
> -	struct ttm_mem_type_manager *man = &bdev->man[mem->mem_type];
> +	struct ttm_mem_type_manager *man = ttm_manager_type(bdev, mem->mem_type);
>   	int ret;
>   	void *addr;
>   
> @@ -232,7 +232,7 @@ static void ttm_mem_reg_iounmap(struct ttm_bo_device *bdev,
>   {
>   	struct ttm_mem_type_manager *man;
>   
> -	man = &bdev->man[mem->mem_type];
> +	man = ttm_manager_type(bdev, mem->mem_type);
>   
>   	if (virtual && mem->bus.addr == NULL)
>   		iounmap(virtual);
> @@ -303,7 +303,7 @@ int ttm_bo_move_memcpy(struct ttm_buffer_object *bo,
>   		       struct ttm_mem_reg *new_mem)
>   {
>   	struct ttm_bo_device *bdev = bo->bdev;
> -	struct ttm_mem_type_manager *man = &bdev->man[new_mem->mem_type];
> +	struct ttm_mem_type_manager *man = ttm_manager_type(bdev, new_mem->mem_type);
>   	struct ttm_tt *ttm = bo->ttm;
>   	struct ttm_mem_reg *old_mem = &bo->mem;
>   	struct ttm_mem_reg old_copy = *old_mem;
> @@ -571,7 +571,7 @@ int ttm_bo_kmap(struct ttm_buffer_object *bo,
>   		struct ttm_bo_kmap_obj *map)
>   {
>   	struct ttm_mem_type_manager *man =
> -		&bo->bdev->man[bo->mem.mem_type];
> +		ttm_manager_type(bo->bdev, bo->mem.mem_type);
>   	unsigned long offset, size;
>   	int ret;
>   
> @@ -601,7 +601,7 @@ void ttm_bo_kunmap(struct ttm_bo_kmap_obj *map)
>   {
>   	struct ttm_buffer_object *bo = map->bo;
>   	struct ttm_mem_type_manager *man =
> -		&bo->bdev->man[bo->mem.mem_type];
> +		ttm_manager_type(bo->bdev, bo->mem.mem_type);
>   
>   	if (!map->virtual)
>   		return;
> @@ -634,7 +634,7 @@ int ttm_bo_move_accel_cleanup(struct ttm_buffer_object *bo,
>   			      struct ttm_mem_reg *new_mem)
>   {
>   	struct ttm_bo_device *bdev = bo->bdev;
> -	struct ttm_mem_type_manager *man = &bdev->man[new_mem->mem_type];
> +	struct ttm_mem_type_manager *man = ttm_manager_type(bdev, new_mem->mem_type);
>   	struct ttm_mem_reg *old_mem = &bo->mem;
>   	int ret;
>   	struct ttm_buffer_object *ghost_obj;
> @@ -697,8 +697,8 @@ int ttm_bo_pipeline_move(struct ttm_buffer_object *bo,
>   	struct ttm_bo_device *bdev = bo->bdev;
>   	struct ttm_mem_reg *old_mem = &bo->mem;
>   
> -	struct ttm_mem_type_manager *from = &bdev->man[old_mem->mem_type];
> -	struct ttm_mem_type_manager *to = &bdev->man[new_mem->mem_type];
> +	struct ttm_mem_type_manager *from = ttm_manager_type(bdev, old_mem->mem_type);
> +	struct ttm_mem_type_manager *to = ttm_manager_type(bdev, new_mem->mem_type);
>   
>   	int ret;
>   
> diff --git a/drivers/gpu/drm/ttm/ttm_bo_vm.c b/drivers/gpu/drm/ttm/ttm_bo_vm.c
> index 468a0eb9e632..5ae679184eb5 100644
> --- a/drivers/gpu/drm/ttm/ttm_bo_vm.c
> +++ b/drivers/gpu/drm/ttm/ttm_bo_vm.c
> @@ -282,7 +282,7 @@ vm_fault_t ttm_bo_vm_fault_reserved(struct vm_fault *vmf,
>   	vm_fault_t ret = VM_FAULT_NOPAGE;
>   	unsigned long address = vmf->address;
>   	struct ttm_mem_type_manager *man =
> -		&bdev->man[bo->mem.mem_type];
> +		ttm_manager_type(bdev, bo->mem.mem_type);
>   
>   	/*
>   	 * Refuse to fault imported pages. This should be handled
> diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h
> index 9d066529ca61..ec25451b503f 100644
> --- a/include/drm/ttm/ttm_bo_driver.h
> +++ b/include/drm/ttm/ttm_bo_driver.h
> @@ -444,6 +444,12 @@ struct ttm_bo_device {
>   	bool no_retry;
>   };
>   
> +static inline struct ttm_mem_type_manager *ttm_manager_type(struct ttm_bo_device *bdev,
> +							    int mem_type)
> +{
> +	return &bdev->man[mem_type];
> +}
> +
>   /**
>    * struct ttm_lru_bulk_move_pos
>    *

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