From: Dave Airlie Date: Mon, 7 Sep 2020 20:46:18 +0000 (+1000) Subject: drm/ttm: introduce ttm_bo_move_null X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=ecfe6953fa00115414a6fefe49023a1ebc187a98;p=uclinux-h8%2Flinux.git drm/ttm: introduce ttm_bo_move_null This pattern is cut-n-pasted across 4 drivers, switch it to a WARN_ON instead, as BUG_ON is considered a bad idea usually. Reviewed-by: Christian König Reviewed-by: Ben Skeggs Signed-off-by: Dave Airlie Link: https://patchwork.freedesktop.org/patch/msgid/20200907204630.1406528-2-airlied@gmail.com --- diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c index c6f4d9ede0e0..5f7a8e23ed9d 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c @@ -175,24 +175,6 @@ static int amdgpu_verify_access(struct ttm_buffer_object *bo, struct file *filp) } /** - * amdgpu_move_null - Register memory for a buffer object - * - * @bo: The bo to assign the memory to - * @new_mem: The memory to be assigned. - * - * Assign the memory from new_mem to the memory of the buffer object bo. - */ -static void amdgpu_move_null(struct ttm_buffer_object *bo, - struct ttm_resource *new_mem) -{ - struct ttm_resource *old_mem = &bo->mem; - - BUG_ON(old_mem->mm_node != NULL); - *old_mem = *new_mem; - new_mem->mm_node = NULL; -} - -/** * amdgpu_mm_node_addr - Compute the GPU relative offset of a GTT buffer. * * @bo: The bo to assign the memory to. @@ -676,7 +658,7 @@ static int amdgpu_bo_move(struct ttm_buffer_object *bo, bool evict, adev = amdgpu_ttm_adev(bo->bdev); if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) { - amdgpu_move_null(bo, new_mem); + ttm_bo_move_null(bo, new_mem); return 0; } if ((old_mem->mem_type == TTM_PL_TT && @@ -684,7 +666,7 @@ static int amdgpu_bo_move(struct ttm_buffer_object *bo, bool evict, (old_mem->mem_type == TTM_PL_SYSTEM && new_mem->mem_type == TTM_PL_TT)) { /* bind is enough */ - amdgpu_move_null(bo, new_mem); + ttm_bo_move_null(bo, new_mem); return 0; } if (old_mem->mem_type == AMDGPU_PL_GDS || @@ -694,7 +676,7 @@ static int amdgpu_bo_move(struct ttm_buffer_object *bo, bool evict, new_mem->mem_type == AMDGPU_PL_GWS || new_mem->mem_type == AMDGPU_PL_OA) { /* Nothing to save here */ - amdgpu_move_null(bo, new_mem); + ttm_bo_move_null(bo, new_mem); return 0; } diff --git a/drivers/gpu/drm/nouveau/nouveau_bo.c b/drivers/gpu/drm/nouveau/nouveau_bo.c index 83fdd169a27a..2c230e0b34da 100644 --- a/drivers/gpu/drm/nouveau/nouveau_bo.c +++ b/drivers/gpu/drm/nouveau/nouveau_bo.c @@ -993,9 +993,7 @@ nouveau_bo_move(struct ttm_buffer_object *bo, bool evict, /* Fake bo copy. */ if (old_reg->mem_type == TTM_PL_SYSTEM && !bo->ttm) { - BUG_ON(bo->mem.mm_node != NULL); - bo->mem = *new_reg; - new_reg->mm_node = NULL; + ttm_bo_move_null(bo, new_reg); goto out; } diff --git a/drivers/gpu/drm/qxl/qxl_ttm.c b/drivers/gpu/drm/qxl/qxl_ttm.c index 19b18ea38c34..b19b9641470c 100644 --- a/drivers/gpu/drm/qxl/qxl_ttm.c +++ b/drivers/gpu/drm/qxl/qxl_ttm.c @@ -158,16 +158,6 @@ static struct ttm_tt *qxl_ttm_tt_create(struct ttm_buffer_object *bo, return >t->ttm; } -static void qxl_move_null(struct ttm_buffer_object *bo, - struct ttm_resource *new_mem) -{ - struct ttm_resource *old_mem = &bo->mem; - - BUG_ON(old_mem->mm_node != NULL); - *old_mem = *new_mem; - new_mem->mm_node = NULL; -} - static int qxl_bo_move(struct ttm_buffer_object *bo, bool evict, struct ttm_operation_ctx *ctx, struct ttm_resource *new_mem) @@ -180,7 +170,7 @@ static int qxl_bo_move(struct ttm_buffer_object *bo, bool evict, return ret; if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) { - qxl_move_null(bo, new_mem); + ttm_bo_move_null(bo, new_mem); return 0; } return ttm_bo_move_memcpy(bo, ctx, new_mem); diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c index 375ffd4a56ab..155e7b971afa 100644 --- a/drivers/gpu/drm/radeon/radeon_ttm.c +++ b/drivers/gpu/drm/radeon/radeon_ttm.c @@ -148,16 +148,6 @@ static int radeon_verify_access(struct ttm_buffer_object *bo, struct file *filp) filp->private_data); } -static void radeon_move_null(struct ttm_buffer_object *bo, - struct ttm_resource *new_mem) -{ - struct ttm_resource *old_mem = &bo->mem; - - BUG_ON(old_mem->mm_node != NULL); - *old_mem = *new_mem; - new_mem->mm_node = NULL; -} - static int radeon_move_blit(struct ttm_buffer_object *bo, bool evict, bool no_wait_gpu, struct ttm_resource *new_mem, @@ -316,7 +306,7 @@ static int radeon_bo_move(struct ttm_buffer_object *bo, bool evict, rdev = radeon_get_rdev(bo->bdev); if (old_mem->mem_type == TTM_PL_SYSTEM && bo->ttm == NULL) { - radeon_move_null(bo, new_mem); + ttm_bo_move_null(bo, new_mem); return 0; } if ((old_mem->mem_type == TTM_PL_TT && @@ -324,7 +314,7 @@ static int radeon_bo_move(struct ttm_buffer_object *bo, bool evict, (old_mem->mem_type == TTM_PL_SYSTEM && new_mem->mem_type == TTM_PL_TT)) { /* bind is enough */ - radeon_move_null(bo, new_mem); + ttm_bo_move_null(bo, new_mem); return 0; } if (!rdev->ring[radeon_copy_ring_index(rdev)].ready || diff --git a/include/drm/ttm/ttm_bo_driver.h b/include/drm/ttm/ttm_bo_driver.h index a694388f7b13..ebba282667ba 100644 --- a/include/drm/ttm/ttm_bo_driver.h +++ b/include/drm/ttm/ttm_bo_driver.h @@ -521,6 +521,23 @@ static inline void ttm_bo_move_to_lru_tail_unlocked(struct ttm_buffer_object *bo } /** + * ttm_bo_move_null = assign memory for a buffer object. + * @bo: The bo to assign the memory to + * @new_mem: The memory to be assigned. + * + * Assign the memory from new_mem to the memory of the buffer object bo. + */ +static inline void ttm_bo_move_null(struct ttm_buffer_object *bo, + struct ttm_resource *new_mem) +{ + struct ttm_resource *old_mem = &bo->mem; + + WARN_ON(old_mem->mm_node != NULL); + *old_mem = *new_mem; + new_mem->mm_node = NULL; +} + +/** * ttm_bo_unreserve * * @bo: A pointer to a struct ttm_buffer_object.