On 12/12/15 15:34, Chris Wilson wrote:
dma-buf provides a generic fence class for interoperation between
drivers. Internally we use the request structure as a fence, and so with
only a little bit of interfacing we can rebase those requests on top of
dma-buf fences. This will allow us, in the future, to pass those fences
back to userspace or between drivers.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx>
Cc: Daniel Vetter <daniel.vetter@xxxxxxxx>
---
drivers/gpu/drm/i915/i915_debugfs.c | 2 +-
drivers/gpu/drm/i915/i915_gem.c | 2 +-
drivers/gpu/drm/i915/i915_gem_request.c | 128 ++++++++++++++++++++++++++---
drivers/gpu/drm/i915/i915_gem_request.h | 25 ++----
drivers/gpu/drm/i915/i915_gpu_error.c | 2 +-
drivers/gpu/drm/i915/i915_guc_submission.c | 2 +-
drivers/gpu/drm/i915/intel_breadcrumbs.c | 3 +-
drivers/gpu/drm/i915/intel_lrc.c | 2 +-
drivers/gpu/drm/i915/intel_ringbuffer.c | 14 ++--
9 files changed, 140 insertions(+), 40 deletions(-)
This seems to be doing the same thing as John Harrison's patch
[PATCH 05/13] drm/i915: Convert requests to use struct fence
Likewise you both have a patch to remove lazy coherency, and various
other duplications:
[PATCH 06/13] drm/i915: Removed now redudant parameter to
i915_gem_request_completed()
[PATCH 08/13] drm/i915: Delay the freeing of requests until retire time
These will have to be unified; we just have to pick exactly how to make
each of these improvements.
.Dave.
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