From 3c9c998ffc90b24fdd58a18c04b5297797c15abf Mon Sep 17 00:00:00 2001
From: Makoto Onuki <omakoto@google.com>
Date: Wed, 17 Jan 2018 10:46:48 -0800
Subject: [PATCH] Make DEBUG_FPS_DIVISOR updatable via setting for possible
 experiments

Bug: 70982379
Test: Manual test with "settings put global fps_divisor 4" and reboot

Change-Id: I61437ede907fc387257bf9c07dab46f0032d4e1b
---
 core/java/android/provider/Settings.java                  | 8 ++++++++
 .../src/android/provider/SettingsBackupTest.java          | 1 +
 .../server/am/GlobalSettingsToPropertiesMapper.java       | 2 ++
 3 files changed, 11 insertions(+)

diff --git a/core/java/android/provider/Settings.java b/core/java/android/provider/Settings.java
index 850aedd517a91..ce35d16cf7a9e 100644
--- a/core/java/android/provider/Settings.java
+++ b/core/java/android/provider/Settings.java
@@ -9663,6 +9663,14 @@ public final class Settings {
         */
         public static final String SYS_VDSO = "sys_vdso";
 
+        /**
+         * An integer to reduce the FPS by this factor. Only for experiments. Need to reboot the
+         * device for this setting to take full effect.
+         *
+         * @hide
+         */
+        public static final String FPS_DEVISOR = "fps_divisor";
+
         /**
          * App standby (app idle) specific settings.
          * This is encoded as a key=value list, separated by commas. Ex:
diff --git a/core/tests/coretests/src/android/provider/SettingsBackupTest.java b/core/tests/coretests/src/android/provider/SettingsBackupTest.java
index 410bee025df4f..af668bdac958b 100644
--- a/core/tests/coretests/src/android/provider/SettingsBackupTest.java
+++ b/core/tests/coretests/src/android/provider/SettingsBackupTest.java
@@ -351,6 +351,7 @@ public class SettingsBackupTest {
                     Settings.Global.SYS_STORAGE_THRESHOLD_MAX_BYTES,
                     Settings.Global.SYS_STORAGE_THRESHOLD_PERCENTAGE,
                     Settings.Global.SYS_VDSO,
+                    Settings.Global.FPS_DEVISOR,
                     Settings.Global.TCP_DEFAULT_INIT_RWND,
                     Settings.Global.TETHER_DUN_APN,
                     Settings.Global.TETHER_DUN_REQUIRED,
diff --git a/services/core/java/com/android/server/am/GlobalSettingsToPropertiesMapper.java b/services/core/java/com/android/server/am/GlobalSettingsToPropertiesMapper.java
index c9afc17e1eb41..d6c6f96285a6f 100644
--- a/services/core/java/com/android/server/am/GlobalSettingsToPropertiesMapper.java
+++ b/services/core/java/com/android/server/am/GlobalSettingsToPropertiesMapper.java
@@ -23,6 +23,7 @@ import android.os.SystemProperties;
 import android.provider.Settings;
 import android.text.TextUtils;
 import android.util.Slog;
+import android.view.ThreadedRenderer;
 
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.util.Preconditions;
@@ -39,6 +40,7 @@ class GlobalSettingsToPropertiesMapper {
     //  List mapping entries in the following format:
     //  {Settings.Global.SETTING_NAME, "system_property_name"},
         {Settings.Global.SYS_VDSO, "sys.vdso"},
+        {Settings.Global.FPS_DEVISOR, ThreadedRenderer.DEBUG_FPS_DIVISOR},
     };