If the whole GT is asleep, we know that each engine must also be asleep
and so we can quickly return without checking them all.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_pmu.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/i915/i915_pmu.c b/drivers/gpu/drm/i915/i915_pmu.c
index 5f2adfbf85be..00325471be90 100644
--- a/drivers/gpu/drm/i915/i915_pmu.c
+++ b/drivers/gpu/drm/i915/i915_pmu.c
@@ -312,6 +312,9 @@ engines_sample(struct intel_gt *gt, unsigned int period_ns)
if ((i915->pmu.enable & ENGINE_SAMPLE_MASK) == 0)
return;
+ if (!intel_gt_pm_is_awake(gt))
+ return;
+
for_each_engine(engine, gt, id) {
struct intel_engine_pmu *pmu = &engine->pmu;
spinlock_t *mmio_lock;
--
2.24.1
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