Android Kernel Features

List of Kerenl features unique to Android

 * Binder - lightweight IPC
 * used instead of SysV IPC
 * ashmem - Android share memory
 * PMEM - Process memory allocator
 * logcat -
 * wakelock - used for power management
 * oom handling modifications?
 * alarm -

Resources
Jollen Chen's excellent presentation on system-level Android features, including an overview of kernel features unique to Android: (Parts in Chinese: http://www.slideshare.net/jollen/android-os-porting-introduction