health 2.0: update readme to uninstall healthd

Test: none
Bug: 77541952

Change-Id: I44191f2d9f4a6d328c0ec96212c2add3b02874ca

diff --git a/health/2.0/README b/health/2.0/README
index 49b2b1ebc6dd2304b48228e671809942479ccd05..2281f989699e2ed0225ab2ca1bc4c27c91d4c541 100644 (file)
--- a/health/2.0/README
+++ b/health/2.0/README
@@ -1,11 +1,18 @@
 Upgrading from health@1.0 HAL
 
-0. Remove android.hardware.health@1.0* from PRDOUCT_PACKAGES
+0. Remove android.hardware.health@1.0* from PRODUCT_PACKAGES
    in device/<manufacturer>/<device>/device.mk
 
 1. If the device does not have a vendor-specific libhealthd AND does not
-   implement storage-related APIs, just add the following to PRODUCT_PACKAGES:
-   android.hardware.health@2.0-service
+   implement storage-related APIs, just do the following:
+
+    1.1 (recommended) To remove healthd from the build,
+        PRODUCT_PACKAGES += android.hardware.health@2.0-service.override
+        DEVICE_FRAMEWORK_MANIFEST_FILE += \
+            system/libhidl/vintfdata/manifest_healthd_exclude.xml
+    1.2 To keep healthd in the build,
+        PRODUCT_PACKAGES += android.hardware.health@2.0-service
+
    Otherwise, continue to Step 2.
 
 2. Create directory
@@ -45,8 +52,19 @@ cc_binary {
     ],
 
     header_libs: ["libhealthd_headers"],
+
+    // Uncomment the following to remove healthd from the build.
+    // overrides: [
+    //     "healthd",
+    // ],
 }
 
+    3.1 (recommended) To remove healthd from the build, keep "overrides"
+          section, and include the following in device.mk:
+            DEVICE_FRAMEWORK_MANIFEST_FILE += \
+                system/libhidl/vintfdata/manifest_healthd_exclude.xml
+    3.2 To keep healthd in the build, remove "overrides" section.
+
 4. Create device/<manufacturer>/<device>/health/android.hardware.health@2.0-service.<device>.rc
 
 service vendor.health-hal-2-0 /vendor/bin/hw/android.hardware.health@2.0-service.<device>