From: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Hold blitter engine power reference across the whole copy operation for
efficiency.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
---
drivers/gpu/drm/i915/gem/i915_gem_object.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_object.c b/drivers/gpu/drm/i915/gem/i915_gem_object.c
index 34bbefa6d67f..c84443e01ef1 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_object.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_object.c
@@ -1028,6 +1028,8 @@ int i915_window_blt_copy(struct drm_i915_gem_object *dst,
spin_unlock(&i915->mm.window_queue.lock);
+ intel_engine_pm_get(ce->engine);
+
do {
struct i915_request *rq;
long timeout;
@@ -1080,6 +1082,8 @@ int i915_window_blt_copy(struct drm_i915_gem_object *dst,
flush_work(&ce->engine->retire_work);
} while (remain);
+ intel_engine_pm_put(ce->engine);
+
spin_lock(&i915->mm.window_queue.lock);
src_vma->size = BLT_WINDOW_SZ;
dst_vma->size = BLT_WINDOW_SZ;
--
2.26.2
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