drm/i915/gem: Wait until the context is finally retired before releasing engines

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If we want to percolate information back from the HW, up through the GEM
context, we need to wait until the intel_context is scheduled out for
the last time. This is handled by the retirement of the intel_context's
barrier, i.e. by listening to the pulse after the notional unpin. So
wait until the intel_context is finally retired before releasing the
engine, so that we can inspect the final context state and pass it on.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200406155840.1728-3-chris@chris-wilson.co.uk

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Chris Wilson 2020-04-06 16:58:40 +01:00

parent 3b0a05792e

commit e68296259c

1 changed files with 6 additions and 10 deletions

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

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