commit abce165ea1296a37d8df662a013c620e9b08be2c
author Ady Abraham <adyabr@google.com> Thu Feb 24 10:51:19 2022 -0800
committer Ady Abraham <adyabr@google.com> Thu Feb 24 20:10:44 2022 +0000
tree bb9c3d8e5b5effd5ba0537f6e77cd83a20773617
parent 41c0e3f765be8163e550b9ec0eb0c0d1bcc8a73d

SF: add trace for ExpensiveRendering

Bug: 221067687
Test: manual
Change-Id: Ic5d050d8e25cdf12f130206d47f3f0d7bf97fafc

services/surfaceflinger/DisplayHardware/PowerAdvisor.cpp

diff --git a/services/surfaceflinger/DisplayHardware/PowerAdvisor.cpp b/services/surfaceflinger/DisplayHardware/PowerAdvisor.cpp
index 6f02843..3dab389 100644
--- a/services/surfaceflinger/DisplayHardware/PowerAdvisor.cpp
+++ b/services/surfaceflinger/DisplayHardware/PowerAdvisor.cpp
@@ -16,6 +16,8 @@
 
 //#define LOG_NDEBUG 0
 
+#define ATRACE_TAG ATRACE_TAG_GRAPHICS
+
 #undef LOG_TAG
 #define LOG_TAG "PowerAdvisor"
 
@@ -27,6 +29,7 @@
 #include <android-base/properties.h>
 #include <utils/Log.h>
 #include <utils/Mutex.h>
+#include <utils/Trace.h>
 
 #include <android/hardware/power/1.3/IPower.h>
 #include <android/hardware/power/IPower.h>
@@ -70,6 +73,14 @@
     return timeout;
 }
 
+void traceExpensiveRendering(bool enabled) {
+    if (enabled) {
+        ATRACE_ASYNC_BEGIN("ExpensiveRendering", 0);
+    } else {
+        ATRACE_ASYNC_END("ExpensiveRendering", 0);
+    }
+}
+
 } // namespace
 
 PowerAdvisor::PowerAdvisor(SurfaceFlinger& flinger)
@@ -247,6 +258,9 @@
     bool setExpensiveRendering(bool enabled) override {
         ALOGV("HIDL setExpensiveRendering %s", enabled ? "T" : "F");
         auto ret = mPowerHal->powerHintAsync_1_3(PowerHint::EXPENSIVE_RENDERING, enabled);
+        if (ret.isOk()) {
+            traceExpensiveRendering(enabled);
+        }
         return ret.isOk();
     }
 
@@ -323,6 +337,9 @@
         }
 
         auto ret = mPowerHal->setMode(Mode::EXPENSIVE_RENDERING, enabled);
+        if (ret.isOk()) {
+            traceExpensiveRendering(enabled);
+        }
         return ret.isOk();
     }