With gem requests reworked to only keep some memory around after
it's completed it's now mostly harmless to keep a reference to the
request until the state is destroyed. This makes it easy to hang
on to the request until the plane state is destroyed since it is
just a bunch of memory now.
On my 64-bits system a i915_gem_request is 352 bytes. With all
3 crtc's, each 4 planes enabled the total is 4224 bytes,
low enough not to optimize this case too much.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
Cc: Keith Packard <keithp@xxxxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxxx>
Cc: David Airlie <airlied@xxxxxxxx>
Cc: intel-gfx@xxxxxxxxxxxxxxxxxxxxx
Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx
Fixes: 849782575325 ("drm/i915: cleanup_plane_fb: also drop reference to current state wait_req")
---
drivers/gpu/drm/i915/intel_atomic_plane.c | 5 ++++-
drivers/gpu/drm/i915/intel_display.c | 6 ------
2 files changed, 4 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_atomic_plane.c b/drivers/gpu/drm/i915/intel_atomic_plane.c
index 7de7721f65bc..f98071a1dcc0 100644
--- a/drivers/gpu/drm/i915/intel_atomic_plane.c
+++ b/drivers/gpu/drm/i915/intel_atomic_plane.c
@@ -101,7 +101,10 @@ void
intel_plane_destroy_state(struct drm_plane *plane,
struct drm_plane_state *state)
{
- WARN_ON(state && to_intel_plane_state(state)->wait_req);
+ struct intel_plane_state *intel_state = to_intel_plane_state(state);
+
+ i915_gem_request_assign(&intel_state->wait_req, NULL);
+
drm_atomic_helper_plane_destroy_state(plane, state);
}
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index af45ee206239..774895288bcc 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -14063,17 +14063,11 @@ intel_cleanup_plane_fb(struct drm_plane *plane,
const struct drm_plane_state *old_state)
{
struct drm_device *dev = plane->dev;
- struct intel_plane_state *intel_state = to_intel_plane_state(plane->state);
struct drm_i915_gem_object *old_obj = intel_fb_obj(old_state->fb);
- struct intel_plane_state *old_intel_state =
- to_intel_plane_state(old_state);
if (old_obj && (plane->type != DRM_PLANE_TYPE_CURSOR ||
!INTEL_INFO(dev)->cursor_needs_physical))
intel_unpin_fb_obj(old_state->fb, old_state->rotation);
-
- i915_gem_request_assign(&intel_state->wait_req, NULL);
- i915_gem_request_assign(&old_intel_state->wait_req, NULL);
}
int
--
2.7.4
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