I need a canary in a ttm-based atomic driver to make sure the
dma_fence_begin/end_signalling annotations actually work.
Cc: linux-me...@vger.kernel.org
Cc: linaro-mm-...@lists.linaro.org
Cc: linux-r...@vger.kernel.org
Cc: amd-...@lists.freedesktop.org
Cc: intel-...@lists.freedesktop.org
Cc: Chris Wilson <ch...@chris-wilson.co.uk>
Cc: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
Cc: Christian König <christian.koe...@amd.com>
Signed-off-by: Daniel Vetter <daniel.vet...@intel.com>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index ea0e039a667a..4469a8c96b08 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -57,6 +57,7 @@
#include "ivsrcid/ivsrcid_vislands30.h"
+#include <linux/module.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/version.h>
@@ -7109,6 +7110,9 @@ static void amdgpu_dm_atomic_commit_tail(struct
drm_atomic_state *state)
struct drm_connector_state *old_con_state, *new_con_state;
struct dm_crtc_state *dm_old_crtc_state, *dm_new_crtc_state;
int crtc_disable_count = 0;
+ bool fence_cookie;
+
+ fence_cookie = dma_fence_begin_signalling();
drm_atomic_helper_update_legacy_modeset_state(dev, state);
@@ -7389,6 +7393,8 @@ static void amdgpu_dm_atomic_commit_tail(struct
drm_atomic_state *state)
/* Signal HW programming completion */
drm_atomic_helper_commit_hw_done(state);
+ dma_fence_end_signalling(fence_cookie);
+
if (wait_for_vblank)
drm_atomic_helper_wait_for_flip_done(dev, state);
--
2.26.2
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