drm/i915/gem: Use a single chained reloc batches for a single execbuf

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As we can now keep chaining together a relocation batch to process any
number of relocations, we can keep building that relocation batch for
all of the target vma. This avoiding emitting a new request into the
ring for each target, consuming precious ring space and a potential
stall.

v2: Propagate the failure from submitting the relocation batch.

Testcase: igt/gem_exec_reloc/basic-wide-active
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/20200501192945.22215-2-chris@chris-wilson.co.uk

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Chris Wilson 2020-05-01 20:29:44 +01:00

parent 964a9b0f61

commit 0e97fbb080

1 changed files with 24 additions and 14 deletions

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drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c

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