Add init-mmd-prop.rc in case mmd is not built
The build flag RELEASE_MEMORY_MANAGEMENT_DAEMON will be eventually
enabled. If mmd is not built into the image, init-mmd-prop.rc sets
"mmd.enabled_aconfig" sysprop to unblock swapon_all execution.
Devices launching mmd in Trunkfood and Nextfood are supposed to execute
swapon_all command on "on property:mmd.enabled_aconfig=*" trigger.
On devices with mmd enabled, we need `mmd.enabled_aconfig` sysprop to be
empty by default, to let swapon_all command wait until aconfig flag
value is loaded to the system property.
Bug: 393481329
Test: manual
Change-Id: Iaba4cee2b5006a10403d5e03532bed008ab80019
diff --git a/rootdir/Android.bp b/rootdir/Android.bp
index 3204a9f..c0d31d9 100644
--- a/rootdir/Android.bp
+++ b/rootdir/Android.bp
@@ -118,6 +118,12 @@
}
prebuilt_etc {
+ name: "init-mmd-prop.rc",
+ src: "init-mmd-prop.rc",
+ sub_dir: "init",
+}
+
+prebuilt_etc {
name: "asan.options",
src: "asan.options",
}
diff --git a/rootdir/init-mmd-prop.rc b/rootdir/init-mmd-prop.rc
new file mode 100644
index 0000000..6e9191c
--- /dev/null
+++ b/rootdir/init-mmd-prop.rc
@@ -0,0 +1,19 @@
+on property:sys.boot_completed=1
+ # When mmd package is not included in the image, we need to initialize
+ # `mmd.enabled_aconfig` sysprop instead of `mmd --set-property`.
+ #
+ # This is because of the consideration for devices in Trunkfood and Nextfood
+ # under mmd being launched via AConfig flag. The devices set up zram with
+ # mmd if `mmd_enabled` AConfig flag is enabled, otherwise set up zram with
+ # swapon_all init command. Since AConfig does not support any init script
+ # integration, we use `mmd.enabled_aconfig` copied by `mmd --set-property`
+ # instead of AConfig flag itself and we need mmd.enabled_aconfig to be empty
+ # by default, to let swapon_all command wait until aconfig flag value is
+ # loaded to the system property.
+ # Devices in Trunkfood and Nextfood needs to execute swapon_all command on
+ # `on property:mmd.enabled_aconfig=*` trigger. So initializing
+ # `mmd.enabled_aconfig` sysprop is required on images without mmd package.
+ #
+ # Note that this init file must not be in the image if mmd is built into the
+ # image.
+ setprop mmd.enabled_aconfig false
\ No newline at end of file