We only need to flush the object once prior to starting the partial
tiling test as inside the test we explicitly maintain coherency.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
---
.../drm/i915/gem/selftests/i915_gem_mman.c | 21 ++++++++-----------
1 file changed, 9 insertions(+), 12 deletions(-)
diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
index 5db3327958fb..b92809418729 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_mman.c
@@ -98,6 +98,14 @@ static int check_partial_mapping(struct drm_i915_gem_object *obj,
GEM_BUG_ON(i915_gem_object_get_tiling(obj) != tile->tiling);
GEM_BUG_ON(i915_gem_object_get_stride(obj) != tile->stride);
+ i915_gem_object_lock(obj);
+ err = i915_gem_object_set_to_gtt_domain(obj, true);
+ i915_gem_object_unlock(obj);
+ if (err) {
+ pr_err("Failed to flush to GTT write domain; err=%d\n", err);
+ return err;
+ }
+
for_each_prime_number_from(page, 1, npages) {
struct i915_ggtt_view view =
compute_partial_view(obj, page, MIN_CHUNK_PAGES);
@@ -110,15 +118,6 @@ static int check_partial_mapping(struct drm_i915_gem_object *obj,
GEM_BUG_ON(view.partial.size > nreal);
cond_resched();
- i915_gem_object_lock(obj);
- err = i915_gem_object_set_to_gtt_domain(obj, true);
- i915_gem_object_unlock(obj);
- if (err) {
- pr_err("Failed to flush to GTT write domain; err=%d\n",
- err);
- return err;
- }
-
vma = i915_gem_object_ggtt_pin(obj, &view, 0, 0, PIN_MAPPABLE);
if (IS_ERR(vma)) {
pr_err("Failed to pin partial view: offset=%lu; err=%d\n",
@@ -144,9 +143,7 @@ static int check_partial_mapping(struct drm_i915_gem_object *obj,
if (offset >= obj->base.size)
continue;
- i915_gem_object_lock(obj);
- i915_gem_object_flush_write_domain(obj, ~I915_GEM_DOMAIN_CPU);
- i915_gem_object_unlock(obj);
+ i915_gem_flush_ggtt_writes(to_i915(obj->base.dev));
p = i915_gem_object_get_page(obj, offset >> PAGE_SHIFT);
cpu = kmap(p) + offset_in_page(offset);
--
2.20.1
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