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| author | Ben Skeggs <bskeggs@redhat.com> | 2018-05-08 20:39:47 +1000 |
|---|---|---|
| committer | Ben Skeggs <bskeggs@redhat.com> | 2018-05-18 15:01:26 +1000 |
| commit | 470db8b78186efe840b6452c6c4934178058059e (patch) | |
| tree | 7fba44f4e2207f3c08f714021b3d077feacd04ab /drivers/gpu/drm/nouveau/nouveau_gem.c | |
| parent | 0db912af8f5ad4fa4dc08a9c8e411a10953c5403 (diff) | |
| download | linux-470db8b78186efe840b6452c6c4934178058059e.tar.bz2 | |
drm/nouveau/gem: tie deferred unmapping of buffers to VMA fence completion
As VMAs are per-client, unlike buffers, this allows us to avoid referencing
foreign fences (those that belong to another client/driver) from the client
deferred work handler, and prevent some not-fun race conditions that can be
triggered when a fence stalls.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_gem.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_gem.c | 17 |
1 files changed, 2 insertions, 15 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_gem.c b/drivers/gpu/drm/nouveau/nouveau_gem.c index 2016d9eb338e..300daee74209 100644 --- a/drivers/gpu/drm/nouveau/nouveau_gem.c +++ b/drivers/gpu/drm/nouveau/nouveau_gem.c @@ -115,25 +115,12 @@ nouveau_gem_object_delete_work(struct nouveau_cli_work *w) static void nouveau_gem_object_unmap(struct nouveau_bo *nvbo, struct nouveau_vma *vma) { - const bool mapped = nvbo->bo.mem.mem_type != TTM_PL_SYSTEM; - struct reservation_object *resv = nvbo->bo.resv; - struct reservation_object_list *fobj; + struct dma_fence *fence = vma->fence ? &vma->fence->base : NULL; struct nouveau_gem_object_unmap *work; - struct dma_fence *fence = NULL; - - fobj = reservation_object_get_list(resv); list_del_init(&vma->head); - if (fobj && fobj->shared_count > 1) - ttm_bo_wait(&nvbo->bo, false, false); - else if (fobj && fobj->shared_count == 1) - fence = rcu_dereference_protected(fobj->shared[0], - reservation_object_held(resv)); - else - fence = reservation_object_get_excl(nvbo->bo.resv); - - if (!fence || !mapped) { + if (!fence) { nouveau_gem_object_delete(vma); return; } |