diff mbox series

[RFC,94/97] drm/i915/guc: Don't call switch_to_kernel_context with GuC submission

Message ID 20210506191451.77768-95-matthew.brost@intel.com (mailing list archive)
State New, archived
Headers show
Series Basic GuC submission support in the i915 | expand

Commit Message

Matthew Brost May 6, 2021, 7:14 p.m. UTC
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.brost@intel.com>
 drivers/gpu/drm/i915/gt/intel_engine_pm.c | 4 ++++
 1 file changed, 4 insertions(+)
diff mbox series


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;