drm/i915/gem: Try to flush pending unbind events

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If we cannot handle a vma within the unbind loop, try to flush the
pending events (i915_vma_parked, i915_vm_release) and try again. This
avoids a round trip to userspace that is not guaranteed to make forward
progress, as the events we wait upon require being idle.

References: cb6c3d45f9 ("drm/i915/gem: Avoid parking the vma as we unbind")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191204123556.3740002-1-chris@chris-wilson.co.uk

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Chris Wilson 2019-12-04 12:35:56 +00:00

parent cc662126b4

commit aa5e4453dc

1 changed files with 9 additions and 1 deletions

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drivers/gpu/drm/i915/i915_gem.c

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