Assign different oom score to visible apps based on layer ordering.
Pass oom score in kernel's full range [-1000,1000] to lmkd directly
bug: 21411311
Change-Id: I0cab2aa46269a716ea613025d3b84fe7d04404bb
diff --git a/services/core/java/com/android/server/am/ActivityStackSupervisor.java b/services/core/java/com/android/server/am/ActivityStackSupervisor.java
index 2103b60..54ac58a 100644
--- a/services/core/java/com/android/server/am/ActivityStackSupervisor.java
+++ b/services/core/java/com/android/server/am/ActivityStackSupervisor.java
@@ -357,6 +357,9 @@
// It will be calculated when the default display gets added.
private int mDefaultMinimalSizeOfResizeableTask = -1;
+ // Whether tasks have moved and we need to rank the tasks before next OOM scoring
+ private boolean mTaskLayersChanged = true;
+
/**
* Description of a request to start a new activity, which has been held
* due to app switches being disabled.
@@ -3613,6 +3616,24 @@
}
}
+ void invalidateTaskLayers() {
+ mTaskLayersChanged = true;
+ }
+
+ void rankTaskLayersIfNeeded() {
+ if (!mTaskLayersChanged) {
+ return;
+ }
+ mTaskLayersChanged = false;
+ for (int displayNdx = 0; displayNdx < mActivityDisplays.size(); displayNdx++) {
+ final ArrayList<ActivityStack> stacks = mActivityDisplays.valueAt(displayNdx).mStacks;
+ int baseLayer = 0;
+ for (int stackNdx = stacks.size() - 1; stackNdx >= 0; --stackNdx) {
+ baseLayer += stacks.get(stackNdx).rankTaskLayers(baseLayer);
+ }
+ }
+ }
+
void clearOtherAppTimeTrackers(AppTimeTracker except) {
for (int displayNdx = mActivityDisplays.size() - 1; displayNdx >= 0; --displayNdx) {
final ArrayList<ActivityStack> stacks = mActivityDisplays.valueAt(displayNdx).mStacks;