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path: root/drivers/gpu/drm/i915/i915_mm.c (follow)
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2016-08-19drm/i915: Use remap_io_mapping() to prefault all PTE in a single passChris Wilson1-0/+84
Very old numbers indicate this is a 66% improvement when remapping the entire object for fence contention - due to the elimination of track_pfn_insert and its strcmp. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Testcase: igt/gem_fence_upload/performance Testcase: igt/gem_mmap_gtt Reviewed-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/20160819155428.1670-6-chris@chris-wilson.co.uk