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Add new mode for SCHED_FIFO on UI and RenderThreads.
authorTim Murray <timmurray@google.com>
Fri, 10 Jun 2016 17:03:20 +0000 (10:03 -0700)
committerTim Murray <timmurray@google.com>
Thu, 7 Jul 2016 19:55:31 +0000 (12:55 -0700)
commit33eb07f5759b85a5617f8057d8a335019c7d24dd
tree4f8d38df24b8c7c42cffd760fa1ef654b253c859
parentb89970e0fb11b71592e10570d387eac3bbb6f6d6
Add new mode for SCHED_FIFO on UI and RenderThreads.

Add a new mode, controlled by sys.use_fifo_ui property, that enables the
top app's UI and RenderThread to be SCHED_FIFO. This eliminates almost
all jank due to scheduling competition with non-UI critical
threads. This mode may not be suitable for all devices.

bug 24503801

Change-Id: I7b8a31830ad80f7efa00236928d5476998ed4e00
core/java/android/app/ActivityManagerNative.java
core/java/android/app/IActivityManager.java
core/java/android/os/Process.java
core/java/android/view/ThreadedRenderer.java
core/jni/android_view_ThreadedRenderer.cpp
libs/hwui/renderthread/RenderProxy.cpp
libs/hwui/renderthread/RenderProxy.h
services/core/java/com/android/server/am/ActivityManagerService.java
services/core/java/com/android/server/am/ProcessList.java
services/core/java/com/android/server/am/ProcessRecord.java