From: John Harrison <John.C.Harrison@xxxxxxxxx> Work in progress for replacing seqno usage with requst structures. There is a general feeling that it is better to move away from using a simple integer 'seqno' value to track batch buffer completion. Instead, the request structure should be used. That provides for much more flexibility going forwards. Especially which things like a GPU scheduler (which can re-order batch buffers and hence seqnos after submission to the hardware), Android sync points and other such features which potentially make seqno usage more and more complex. The current set of patches do most of the seqno to request structure conversion. There are still a couple of direct seqno comparisons in the semaphore code. The final conversion of a seqno test into a 'completed' flag inside the request structure is still do to as well. Along with whatever changes are required to maintain such a flag. The patches are being posted now to make sure that the various people involved agree that it is heading in the right direction. [Patches against drm-intel-nightly tree fetched 11/09/2014] John Harrison (29): drm/i915: Remove redundant parameter to i915_gem_object_wait_rendering__tail() drm/i915: Ensure OLS & PLR are always in sync drm/i915: Add reference count to request structure drm/i915: Add helper functions to aid seqno -> request transition drm/i915: Replace last_[rwf]_seqno with last_[rwf]_req drm/i915: Convert i915_gem_ring_throttle to use requests drm/i915: Ensure requests stick around during waits drm/i915: Remove 'outstanding_lazy_seqno' drm/i915: Make 'i915_gem_check_olr' actually check by request not seqno drm/i915: Convert 'last_flip_req' to be a request not a seqno drm/i915: Convert i915_wait_seqno to i915_wait_request drm/i915: Convert __wait_seqno() to __wait_request() drm/i915: Remove obsolete seqno parameter from 'i915_add_request' drm/i915: Convert mmio_flip::seqno to struct request drm/i915: Add IRQ friendly request deference facility drm/i915: Convert 'flip_queued_seqno' into 'flip_queued_request' drm/i915: Convert trace functions from seqno to request drm/i915: Convert 'trace_irq' to use requests rather than seqnos drm/i915: Convert 'ring_idle()' to use requests not seqnos drm/i915: Connect requests to rings at creation not submission drm/i915: Convert 'i915_seqno_passed' calls into 'i915_gem_request_completed' drm/i915: Remove the now redundant 'obj->ring' drm/i915: Cache request completion status drm/i915: Zero fill the request structure drm/i915: Spinlock protection for request list drm/i915: Add uniq id to request structure for debugging drm/i915: Interrupt driven request completion drm/i915: Remove obsolete parameter to i915_gem_request_completed() WIP: Defer seqno allocation until actual hardware submission time drivers/gpu/drm/i915/i915_debugfs.c | 20 +- drivers/gpu/drm/i915/i915_drv.h | 89 ++++++- drivers/gpu/drm/i915/i915_gem.c | 356 +++++++++++++++++--------- drivers/gpu/drm/i915/i915_gem_context.c | 3 +- drivers/gpu/drm/i915/i915_gem_execbuffer.c | 10 +- drivers/gpu/drm/i915/i915_gem_gtt.h | 4 +- drivers/gpu/drm/i915/i915_gem_render_state.c | 2 +- drivers/gpu/drm/i915/i915_gem_tiling.c | 2 +- drivers/gpu/drm/i915/i915_gpu_error.c | 7 +- drivers/gpu/drm/i915/i915_irq.c | 14 +- drivers/gpu/drm/i915/i915_trace.h | 47 ++-- drivers/gpu/drm/i915/intel_display.c | 53 ++-- drivers/gpu/drm/i915/intel_drv.h | 4 +- drivers/gpu/drm/i915/intel_lrc.c | 59 +++-- drivers/gpu/drm/i915/intel_overlay.c | 24 +- drivers/gpu/drm/i915/intel_ringbuffer.c | 82 +++--- drivers/gpu/drm/i915/intel_ringbuffer.h | 25 +- 17 files changed, 505 insertions(+), 296 deletions(-) -- 1.7.9.5 _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
