Make frames dropped be a jank type in Frametimeline
This allows the dropped frames to be accounted within frame timeline
missed frames metrics, without this, the metric tells there are no
missed frames when there are dropped frames.
Bug: 271031574
Test: Verified in traces
Change-Id: I838e0c10d4a92a4d5f753f020b57ea4e59fd0f8d
diff --git a/services/surfaceflinger/FrameTimeline/FrameTimeline.cpp b/services/surfaceflinger/FrameTimeline/FrameTimeline.cpp
index 925f111..40390de 100644
--- a/services/surfaceflinger/FrameTimeline/FrameTimeline.cpp
+++ b/services/surfaceflinger/FrameTimeline/FrameTimeline.cpp
@@ -140,6 +140,10 @@
janks.emplace_back("SurfaceFlinger Stuffing");
jankType &= ~JankType::SurfaceFlingerStuffing;
}
+ if (jankType & JankType::Dropped) {
+ janks.emplace_back("Dropped Frame");
+ jankType &= ~JankType::Dropped;
+ }
// jankType should be 0 if all types of jank were checked for.
LOG_ALWAYS_FATAL_IF(jankType != 0, "Unrecognized jank type value 0x%x", jankType);
@@ -264,6 +268,11 @@
protoJank |= FrameTimelineEvent::JANK_SF_STUFFING;
jankType &= ~JankType::SurfaceFlingerStuffing;
}
+ if (jankType & JankType::Dropped) {
+ // Jank dropped does not append to other janks, it fully overrides.
+ protoJank |= FrameTimelineEvent::JANK_DROPPED;
+ jankType &= ~JankType::Dropped;
+ }
// jankType should be 0 if all types of jank were checked for.
LOG_ALWAYS_FATAL_IF(jankType != 0, "Unrecognized jank type value 0x%x", jankType);
@@ -365,8 +374,7 @@
std::optional<int32_t> SurfaceFrame::getJankType() const {
std::scoped_lock lock(mMutex);
if (mPresentState == PresentState::Dropped) {
- // Return no jank if it's a dropped frame since we cannot attribute a jank to a it.
- return JankType::None;
+ return JankType::Dropped;
}
if (mActuals.presentTime == 0) {
// Frame hasn't been presented yet.
@@ -503,7 +511,8 @@
// We classify prediction expired as AppDeadlineMissed as the
// TokenManager::kMaxTokens we store is large enough to account for a
// reasonable app, so prediction expire would mean a huge scheduling delay.
- mJankType = JankType::AppDeadlineMissed;
+ mJankType = mPresentState != PresentState::Presented ? JankType::Dropped
+ : JankType::AppDeadlineMissed;
deadlineDelta = -1;
return;
}
@@ -594,17 +603,17 @@
mJankType |= displayFrameJankType;
}
}
+ if (mPresentState != PresentState::Presented) {
+ mJankType = JankType::Dropped;
+ // Since frame was not presented, lets drop any present value
+ mActuals.presentTime = 0;
+ }
}
void SurfaceFrame::onPresent(nsecs_t presentTime, int32_t displayFrameJankType, Fps refreshRate,
nsecs_t displayDeadlineDelta, nsecs_t displayPresentDelta) {
std::scoped_lock lock(mMutex);
- if (mPresentState != PresentState::Presented) {
- // No need to update dropped buffers
- return;
- }
-
mActuals.presentTime = presentTime;
nsecs_t deadlineDelta = 0;