From: John Harrison <John.C.Harrison@xxxxxxxxx> There is a construct in the linux kernel called 'struct fence' that is intended to keep track of work that is executed on hardware. I.e. it solves the basic problem that the drivers 'struct drm_i915_gem_request' is trying to address. The request structure does quite a lot more than simply track the execution progress so is very definitely still required. However, the basic completion status side could be updated to use the ready made fence implementation and gain all the advantages that provides. Using the struct fence object also has the advantage that the fence can be used outside of the i915 driver (by other drivers or by userland applications). That is the basis of the dma-buff synchronisation API and allows asynchronous tracking of work completion. In this case, it allows applications to be signalled directly when a batch buffer completes without having to make an IOCTL call into the driver. This is work that was planned since the conversion of the driver from being seqno value based to being request structure based. This patch series does that work. [Patches against drm-intel-nightly tree fetched 15/07/2015] John Harrison (7): drm/i915: Convert requests to use struct fence drm/i915: Removed now redudant parameter to i915_gem_request_completed() drm/i915: Add per context timelines to fence object drm/i915: Delay the freeing of requests until retire time drm/i915: Interrupt driven fences drm/i915: Updated request structure tracing drm/i915: Add sync framework support to execbuff IOCTL Maarten Lankhorst (1): android: add sync_fence_create_dma Tvrtko Ursulin (1): staging/android/sync: Support sync points created from dma-fences drivers/gpu/drm/i915/i915_debugfs.c | 2 +- drivers/gpu/drm/i915/i915_drv.h | 73 +++--- drivers/gpu/drm/i915/i915_gem.c | 369 +++++++++++++++++++++++++++-- drivers/gpu/drm/i915/i915_gem_context.c | 15 +- drivers/gpu/drm/i915/i915_gem_execbuffer.c | 90 ++++++- drivers/gpu/drm/i915/i915_irq.c | 2 +- drivers/gpu/drm/i915/i915_trace.h | 7 +- drivers/gpu/drm/i915/intel_display.c | 4 +- drivers/gpu/drm/i915/intel_lrc.c | 12 + drivers/gpu/drm/i915/intel_pm.c | 6 +- drivers/gpu/drm/i915/intel_ringbuffer.c | 4 + drivers/gpu/drm/i915/intel_ringbuffer.h | 7 + drivers/staging/android/sync.c | 13 +- drivers/staging/android/sync.h | 12 +- drivers/staging/android/sync_debug.c | 42 ++-- include/uapi/drm/i915_drm.h | 16 +- 16 files changed, 583 insertions(+), 91 deletions(-) -- 1.9.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
