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authorDave Airlie <airlied@redhat.com>2017-04-04 05:26:24 +0200
committerDave Airlie <airlied@redhat.com>2017-06-14 04:10:22 +0200
commite9083420bbacce27e43d418064d0d2dfb4b37aaa (patch)
treea539c575bae132fa2cc992ee53da4c04909e7fe1 /include/drm/drm_drv.h
parentMerge tag 'exynos-drm-next-for-v4.13' of git://git.kernel.org/pub/scm/linux/k... (diff)
downloadlinux-e9083420bbacce27e43d418064d0d2dfb4b37aaa.tar.xz
linux-e9083420bbacce27e43d418064d0d2dfb4b37aaa.zip
drm: introduce sync objects (v4)
Sync objects are new toplevel drm object, that contain a pointer to a fence. This fence can be updated via command submission ioctls via drivers. There is also a generic wait obj API modelled on the vulkan wait API (with code modelled on some amdgpu code). These objects can be converted to an opaque fd that can be passes between processes. v2: rename reference/unreference to put/get (Chris) fix leaked reference (David Zhou) drop mutex in favour of cmpxchg (Chris) v3: cleanups from danvet, rebase on drm_fops rename check fd_flags is 0 in ioctls. v4: export find/free, change replace fence to take a syncobj. In order to support lookup first, replace later semantics which seem in the end to be cleaner. Reviewed-by: Sean Paul <seanpaul@chromium.org> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'include/drm/drm_drv.h')
-rw-r--r--include/drm/drm_drv.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/drm/drm_drv.h b/include/drm/drm_drv.h
index 18f3181674e8..d855f9ae41a8 100644
--- a/include/drm/drm_drv.h
+++ b/include/drm/drm_drv.h
@@ -53,6 +53,7 @@ struct drm_mode_create_dumb;
#define DRIVER_RENDER 0x8000
#define DRIVER_ATOMIC 0x10000
#define DRIVER_KMS_LEGACY_CONTEXT 0x20000
+#define DRIVER_SYNCOBJ 0x40000
/**
* struct drm_driver - DRM driver structure