After removing the pinning operations, the vmap/vunmap code as been reduced to what used to be an internal helper. Inline the helper to simplify the implementation.
Signed-off-by: Thomas Zimmermann tzimmermann@suse.de Acked-by: Christian König christian.koenig@amd.com --- drivers/gpu/drm/drm_gem_vram_helper.c | 52 +++++++++++---------------- 1 file changed, 20 insertions(+), 32 deletions(-)
diff --git a/drivers/gpu/drm/drm_gem_vram_helper.c b/drivers/gpu/drm/drm_gem_vram_helper.c index 276e8f8ea663..6159f5dc8f1f 100644 --- a/drivers/gpu/drm/drm_gem_vram_helper.c +++ b/drivers/gpu/drm/drm_gem_vram_helper.c @@ -378,36 +378,6 @@ int drm_gem_vram_unpin(struct drm_gem_vram_object *gbo) } EXPORT_SYMBOL(drm_gem_vram_unpin);
-static int drm_gem_vram_kmap_locked(struct drm_gem_vram_object *gbo, - struct dma_buf_map *map) -{ - int ret; - - ret = ttm_bo_vmap(&gbo->bo, &gbo->map); - if (ret) - return ret; - - *map = gbo->map; - - return 0; -} - -static void drm_gem_vram_kunmap_locked(struct drm_gem_vram_object *gbo, - struct dma_buf_map *map) -{ - struct drm_device *dev = gbo->bo.base.dev; - - if (drm_WARN_ON_ONCE(dev, !dma_buf_map_is_equal(&gbo->map, map))) - return; /* BUG: map not mapped from this BO */ - - /* - * Permanently mapping and unmapping buffers adds overhead from - * updating the page tables and creates debugging output. Therefore, - * we delay the actual unmap operation until the BO gets evicted - * from memory. See drm_gem_vram_bo_driver_move_notify(). - */ -} - /** * drm_gem_vram_vmap() - Pins and maps a GEM VRAM object into kernel address * space @@ -426,9 +396,17 @@ static void drm_gem_vram_kunmap_locked(struct drm_gem_vram_object *gbo, */ int drm_gem_vram_vmap(struct drm_gem_vram_object *gbo, struct dma_buf_map *map) { + int ret; + dma_resv_assert_held(gbo->bo.base.resv);
- return drm_gem_vram_kmap_locked(gbo, map); + ret = ttm_bo_vmap(&gbo->bo, &gbo->map); + if (ret) + return ret; + + *map = gbo->map; + + return 0; } EXPORT_SYMBOL(drm_gem_vram_vmap);
@@ -442,9 +420,19 @@ EXPORT_SYMBOL(drm_gem_vram_vmap); */ void drm_gem_vram_vunmap(struct drm_gem_vram_object *gbo, struct dma_buf_map *map) { + struct drm_device *dev = gbo->bo.base.dev; + dma_resv_assert_held(gbo->bo.base.resv);
- drm_gem_vram_kunmap_locked(gbo, map); + if (drm_WARN_ON_ONCE(dev, !dma_buf_map_is_equal(&gbo->map, map))) + return; /* BUG: map not mapped from this BO */ + + /* + * Permanently mapping and unmapping buffers adds overhead from + * updating the page tables and creates debugging output. Therefore, + * we delay the actual unmap operation until the BO gets evicted + * from memory. See drm_gem_vram_bo_driver_move_notify(). + */ } EXPORT_SYMBOL(drm_gem_vram_vunmap);