drm/i915: Assume exclusive access to objects inside resume

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Inside gtt_restore_mappings() we currently take the obj->resv->lock, but
in the future we need to avoid taking this fs-reclaim tainted lock as we
need to extend the coverage of the vm->mutex. Take advantage of the
single-threaded nature of the early resume phase, and do a single
wbinvd() to flush all the GTT objects en masse.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190819200705.3631-1-chris@chris-wilson.co.uk

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Chris Wilson 2019-08-19 21:07:05 +01:00

parent cc3375607d

commit 64b95df91f

1 changed files with 7 additions and 4 deletions

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drivers/gpu/drm/i915/i915_gem_gtt.c

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