From 053a04f68e086bc1780b5c3864471b75f53aaad5 Mon Sep 17 00:00:00 2001
From: Calin Juravle <calin@google.com>
Date: Thu, 3 May 2018 00:12:54 -0700
Subject: [PATCH] Create a common product config for boot image profiling

Test: manual
Bug: 73313191
Change-Id: Ia25e9dc84509be110feabfbd6d7596087d1e441d
---
 target/product/empty-preloaded-classes |  1 +
 target/product/empty-profile           |  1 +
 target/product/profile_boot_common.mk  | 38 ++++++++++++++++++++++++++
 3 files changed, 40 insertions(+)
 create mode 100644 target/product/empty-preloaded-classes
 create mode 100644 target/product/empty-profile
 create mode 100644 target/product/profile_boot_common.mk

diff --git a/target/product/empty-preloaded-classes b/target/product/empty-preloaded-classes
new file mode 100644
index 000000000..c2ff1e966
--- /dev/null
+++ b/target/product/empty-preloaded-classes
@@ -0,0 +1 @@
+# Empty preloaded-classes file for automated testing.
diff --git a/target/product/empty-profile b/target/product/empty-profile
new file mode 100644
index 000000000..c2ff1e966
--- /dev/null
+++ b/target/product/empty-profile
@@ -0,0 +1 @@
+# Empty preloaded-classes file for automated testing.
diff --git a/target/product/profile_boot_common.mk b/target/product/profile_boot_common.mk
new file mode 100644
index 000000000..c110509a0
--- /dev/null
+++ b/target/product/profile_boot_common.mk
@@ -0,0 +1,38 @@
+#
+# Copyright 2018 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# Use an empty profile to make non of the boot image be AOT compiled (for now).
+# Note that we could use a previous profile but we will miss the opportunity to
+# remove classes that are no longer in use.
+# Ideally we would just generate an empty boot.art but we don't have the build
+# support to separate the image from the compile code.
+PRODUCT_DEX_PREOPT_BOOT_IMAGE_PROFILE_LOCATION := build/target/product/empty-profile
+PRODUCT_DEX_PREOPT_BOOT_FLAGS := --count-hotness-in-compiled-code
+DEX_PREOPT_DEFAULT := nostripping
+
+# Use an empty preloaded-classes list.
+PRODUCT_COPY_FILES += \
+    build/target/product/empty-preloaded-classes:system/etc/preloaded-classes
+
+# Boot image property overrides.
+PRODUCT_PROPERTY_OVERRIDES += \
+    dalvik.vm.jitinitialsize=32m \
+    dalvik.vm.jitmaxsize=32m \
+    dalvik.vm.usejitprofiles=true \
+    dalvik.vm.hot-startup-method-samples=256 \
+    dalvik.vm.extra-opts=-Xps-profile-boot-class-path \
+    dalvik.vm.profilesystemserver=true \
+    dalvik.vm.profilebootimage=true