Remove usages of the DISPLAY_JANK_REPORTED atom
This was originally experimental code for Android 11, but we haven't
used this and collection is not enabled.
This also won't work well on Pixel devices because of complicated
apex-reasons; SurfaceFlinger starts up before apex directories are
mounted which means that SurfaceFlinger cannot depend on any apex
modules, and we won't be able to resolve this dependency in Android 12.
Bug: 184393731
Test: builds
Change-Id: I563d41f38dd2d233f041dc52f823f12b4f5c5930
diff --git a/services/surfaceflinger/Android.bp b/services/surfaceflinger/Android.bp
index 470059a..c0eb277 100644
--- a/services/surfaceflinger/Android.bp
+++ b/services/surfaceflinger/Android.bp
@@ -60,7 +60,6 @@
"libnativewindow",
"libprocessgroup",
"libprotobuf-cpp-lite",
- "libstatslog",
"libsync",
"libtimestats",
"libui",
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index f7c9291..605fef0 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -1769,10 +1769,6 @@
if (frameMissed) {
mFrameMissedCount++;
mTimeStats->incrementMissedFrames();
- if (mMissedFrameJankCount == 0) {
- mMissedFrameJankStart = systemTime();
- }
- mMissedFrameJankCount++;
}
if (hwcFrameMissed) {
@@ -1804,37 +1800,6 @@
}
}
- // Our jank window is always at least 100ms since we missed a
- // frame...
- static constexpr nsecs_t kMinJankyDuration =
- std::chrono::duration_cast<std::chrono::nanoseconds>(100ms).count();
- // ...but if it's larger than 1s then we missed the trace cutoff.
- static constexpr nsecs_t kMaxJankyDuration =
- std::chrono::duration_cast<std::chrono::nanoseconds>(1s).count();
- nsecs_t jankDurationToUpload = -1;
- // If we're in a user build then don't push any atoms
- if (!mIsUserBuild && mMissedFrameJankCount > 0) {
- const auto display = ON_MAIN_THREAD(getDefaultDisplayDeviceLocked());
- // Only report jank when the display is on, as displays in DOZE
- // power mode may operate at a different frame rate than is
- // reported in their config, which causes noticeable (but less
- // severe) jank.
- if (display && display->getPowerMode() == hal::PowerMode::ON) {
- const nsecs_t currentTime = systemTime();
- const nsecs_t jankDuration = currentTime - mMissedFrameJankStart;
- if (jankDuration > kMinJankyDuration && jankDuration < kMaxJankyDuration) {
- jankDurationToUpload = jankDuration;
- }
-
- // We either reported a jank event or we missed the trace
- // window, so clear counters here.
- if (jankDuration > kMinJankyDuration) {
- mMissedFrameJankCount = 0;
- mMissedFrameJankStart = 0;
- }
- }
- }
-
if (mTracingEnabledChanged) {
mTracingEnabled = mTracing.isEnabled();
mTracingEnabledChanged = false;
@@ -1881,7 +1846,6 @@
refreshNeeded |= mRepaintEverything;
if (refreshNeeded && CC_LIKELY(mBootStage != BootStage::BOOTLOADER)) {
- mLastJankDuration = jankDurationToUpload;
// Signal a refresh if a transaction modified the window state,
// a new buffer was latched, or if HWC has requested a full
// repaint
@@ -2209,14 +2173,6 @@
const size_t appConnections = mScheduler->getEventThreadConnectionCount(mAppConnectionHandle);
mTimeStats->recordDisplayEventConnectionCount(sfConnections + appConnections);
- if (mLastJankDuration > 0) {
- ATRACE_NAME("Jank detected");
- const int32_t jankyDurationMillis = mLastJankDuration / (1000 * 1000);
- android::util::stats_write(android::util::DISPLAY_JANK_REPORTED, jankyDurationMillis,
- mMissedFrameJankCount);
- mLastJankDuration = -1;
- }
-
if (isDisplayConnected && !display->isPoweredOn()) {
return;
}
diff --git a/services/surfaceflinger/SurfaceFlinger.h b/services/surfaceflinger/SurfaceFlinger.h
index c57b180..8fdad68 100644
--- a/services/surfaceflinger/SurfaceFlinger.h
+++ b/services/surfaceflinger/SurfaceFlinger.h
@@ -1374,13 +1374,6 @@
// be any issues with a raw pointer referencing an invalid object.
std::unordered_set<Layer*> mOffscreenLayers;
- // Fields tracking the current jank event: when it started and how many
- // janky frames there are.
- nsecs_t mMissedFrameJankStart = 0;
- int32_t mMissedFrameJankCount = 0;
- // Positive if jank should be uploaded in postComposition
- nsecs_t mLastJankDuration = -1;
-
int mFrameRateFlexibilityTokenCount = 0;
sp<IBinder> mDebugFrameRateFlexibilityToken;