drm/i915: Lift timeline ordering to await_dma_fence

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Currently we filter out repeated use of the same timeline in the low
level i915_gem_request_await_request(), after having added the
dependency on the old request. However, we can lift this to
i915_gem_request_await_dma_fence() (before the dependency is added)
using the observation that requests along the same timeline are
explicitly ordered via i915_add_request (along with the dependencies).

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170503093924.5320-3-chris@chris-wilson.co.uk

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Chris Wilson 2017-05-03 10:39:20 +01:00

parent 29ef3fa987

commit ceae14bd4c

1 changed files with 9 additions and 3 deletions

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drivers/gpu/drm/i915/i915_gem_request.c

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