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>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 7f33e6af6ecb..c84060ce6bf8 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -642,9 +642,9 @@ i915_gem_shmem_pwrite(struct drm_device *dev,
                         if (partial_cacheline_write)
                                 drm_clflush_virt_range(vaddr + shmem_page_offset,
                                                        page_length);
-                        ret = __copy_from_user_inatomic(vaddr + shmem_page_offset,
-                                                        user_data,
-                                                        page_length);
+                        ret = __copy_from_user_inatomic_nocache(vaddr + shmem_page_offset,
+                                                                user_data,
+                                                                page_length);
                         if (needs_clflush_after)
                                 drm_clflush_virt_range(vaddr + shmem_page_offset,
                                                        page_length);