Calling switch_to_kernel_context isn't needed if the engine PM reference
is taken while all contexts are pinned. By not calling
switch_to_kernel_context we save on issuing a request to the engine.
Signed-off-by: Matthew Brost <matthew.br...@intel.com>
---
drivers/gpu/drm/i915/gt/intel_engine_pm.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_pm.c
b/drivers/gpu/drm/i915/gt/intel_engine_pm.c
index ba6a9931c4e8..f8fab316e33d 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_pm.c
+++ b/drivers/gpu/drm/i915/gt/intel_engine_pm.c
@@ -162,6 +162,10 @@ static bool switch_to_kernel_context(struct
intel_engine_cs *engine)
unsigned long flags;
bool result = true;
+ /* No need to switch_to_kernel_context if GuC submission */
+ if (intel_engine_uses_guc(engine))
+ return true;
+
/* GPU is pointing to the void, as good as in the kernel context. */
if (intel_gt_is_wedged(engine->gt))
return true;
--
2.28.0
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