drm/i915: Introduce a context barrier callback

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In the next patch, we will want to update live state within a context.
As this state may be in use by the GPU and we haven't been explicitly
tracking its activity, we instead attach it to a request we send down
the context setup with its new state and on retiring that request
cleanup the old state as we then know that it is no longer live.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190309160250.29324-1-chris@chris-wilson.co.uk

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Chris Wilson 2019-03-09 16:02:50 +00:00

parent 831ebf18d6

commit 85fddf0b00

2 changed files with 180 additions and 0 deletions

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74

drivers/gpu/drm/i915/i915_gem_context.c

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106

drivers/gpu/drm/i915/selftests/i915_gem_context.c

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