drm/nouveau: use shared fences for readable objects
nouveau keeps track in userspace whether a buffer is being
written to or being read, but it doesn't use that information.
Change this to allow multiple readers on the same bo.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Acked-by: Ben Skeggs <bskeggs@redhat.com>
diff --git a/drivers/gpu/drm/nouveau/nouveau_display.c b/drivers/gpu/drm/nouveau/nouveau_display.c
index ec1960a..a9ec525 100644
--- a/drivers/gpu/drm/nouveau/nouveau_display.c
+++ b/drivers/gpu/drm/nouveau/nouveau_display.c
@@ -658,7 +658,7 @@
spin_unlock_irqrestore(&dev->event_lock, flags);
/* Synchronize with the old framebuffer */
- ret = nouveau_fence_sync(old_bo, chan);
+ ret = nouveau_fence_sync(old_bo, chan, false);
if (ret)
goto fail;
@@ -722,7 +722,7 @@
goto fail_unpin;
/* synchronise rendering channel with the kernel's channel */
- ret = nouveau_fence_sync(new_bo, chan);
+ ret = nouveau_fence_sync(new_bo, chan, false);
if (ret) {
ttm_bo_unreserve(&new_bo->bo);
goto fail_unpin;
@@ -780,7 +780,7 @@
/* Update the crtc struct and cleanup */
crtc->primary->fb = fb;
- nouveau_bo_fence(old_bo, fence);
+ nouveau_bo_fence(old_bo, fence, false);
ttm_bo_unreserve(&old_bo->bo);
if (old_bo != new_bo)
nouveau_bo_unpin(old_bo);
