Android memory
https://github.com/aosp-mirror/platform_system_core/blob/master/lmkd/lmkd.c
https://android.googlesource.com/platform/system/core/+/master/lmkd/README.md
https://habr.com/en/post/136154/
https://android.googlesource.com/platform/frameworks/base/+/47eb102/services/java/com/android/server/am/ProcessList.java?autodive=0%2F%2F#116
https://www.kernel.org/doc/gorman/html/understand/understand013.html
https://www.kernel.org/doc/html/v4.18/vm/page_owner.html