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authorAndres Rodriguez <andresx7@gmail.com>2017-09-15 20:44:06 -0400
committerAlex Deucher <alexander.deucher@amd.com>2017-10-09 16:30:19 -0400
commit177ae09b5d699a5ebd1cafcee78889db968abf54 (patch)
treea05b42c1155df2dac688952df8378315a7849980 /include/uapi
parentb82485fd384a56c27fae44e649552eca6334237a (diff)
drm/amdgpu: introduce AMDGPU_GEM_CREATE_EXPLICIT_SYNC v2
Introduce a flag to signal that access to a BO will be synchronized through an external mechanism. Currently all buffers shared between contexts are subject to implicit synchronization. However, this is only required for protocols that currently don't support an explicit synchronization mechanism (DRI2/3). This patch introduces the AMDGPU_GEM_CREATE_EXPLICIT_SYNC, so that users can specify when it is safe to disable implicit sync. v2: only disable explicit sync in amdgpu_cs_ioctl Reviewed-by: Christian K├Ânig <christian.koenig@amd.com> Signed-off-by: Andres Rodriguez <andresx7@gmail.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'include/uapi')
-rw-r--r--include/uapi/drm/amdgpu_drm.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/uapi/drm/amdgpu_drm.h b/include/uapi/drm/amdgpu_drm.h
index 4c6e8c482ee4..b62484af8ccb 100644
--- a/include/uapi/drm/amdgpu_drm.h
+++ b/include/uapi/drm/amdgpu_drm.h
@@ -91,6 +91,8 @@ extern "C" {
#define AMDGPU_GEM_CREATE_VRAM_CONTIGUOUS (1 << 5)
/* Flag that BO is always valid in this VM */
#define AMDGPU_GEM_CREATE_VM_ALWAYS_VALID (1 << 6)
+/* Flag that BO sharing will be explicitly synchronized */
+#define AMDGPU_GEM_CREATE_EXPLICIT_SYNC (1 << 7)
struct drm_amdgpu_gem_create_in {
/** the requested memory size */

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