drm/i915: use uncached writes in pwrite
It's around 20% faster. Tested-by: Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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@ -642,9 +642,9 @@ i915_gem_shmem_pwrite(struct drm_device *dev,
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if (partial_cacheline_write)
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drm_clflush_virt_range(vaddr + shmem_page_offset,
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page_length);
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ret = __copy_from_user_inatomic(vaddr + shmem_page_offset,
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user_data,
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page_length);
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ret = __copy_from_user_inatomic_nocache(vaddr + shmem_page_offset,
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user_data,
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page_length);
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if (needs_clflush_after)
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drm_clflush_virt_range(vaddr + shmem_page_offset,
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page_length);
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