Resource: LCE12 Name: Android Mini Summit (overview) Date: 31-10-2012 Speaker: Zach Pfeffer and Christian Bejram

1. Android Mini Summit
LCE12 Copenhagen
Bella Center, Denmark
Wednesday, 2012/10/31
14:00 - 18:00 CET
8:00 AM Austin, Texas

2. Android Introductory Plenary
5 min
Zach Pfeffer
● Introduce the Android Mini-Summit
10 min
Christian Bejram
● ST-E's Android Effort
○ Slides:
■ https://docs.google.com/a/linaro.org/file/d/0B3pUtxWjZbP9dWJqOV9IU3E4djA/edit

3. Introduce the Android Mini-Summit
● Christian Bejram - ST-E's Android Effort
● Thomas Langås - Making Cotton Candy: Technical Challenges
● Vishal Bhoj - Android Benchmarking and Optimization Opportunities
● Michael Hope - Android Dalvik and V8 JIT Improvements
● Nicolas (nico) Pitre - Saving power in Android with big.LITTLE
● Jesse Barker - Graphics
● Deepak Saxena - Android Kernel Upstreaming
● Karim Yaghmour - Embedded Android
● ST-E Android Engineers - Android Productization Challenges at ST-
Ericsson
● Upstream to productization, productization to upstream - Zach Pfeffer
● Questions and Action Item Review - Zach Pfeffer

4. Android Introductory Plenary
10 min
Christian Bejram
● ST-E's Android Effort
○ Slides: https://docs.google.com/a/linaro.
org/file/d/0B3pUtxWjZbP9MzRjekVWNE5pUlk/edit

5. Android Lightning Talk
15 min
Thomas Langås, FXI Technologies
● Making Cotton Candy: Technical Challenges
○ Who is FXI Tech? Who am I?
○ What is the Cotton Candy?
○ Starting point for software
○ Discovering Linaro
■ Focus on kernel space instead of user space
■ Device tree vs. non-device tree kernel
■ Kernel versions
○ Mali GPU: OpenGLES2 source code access

6. Android Benchmarking and
Optimization Opportunities
30 min
Vishal Bhoj
● Talk about what was planned in Hong Kong and give a
summary
● Present current benchmark methodology and hotspot
benchmark results
● Discuss methodology
● Suggest specific optimization opportunities and
additional measurements and benchmarks
● Explore additional benchmarks

7. Android Dalvik and V8 JIT
Improvements
30 min
Michael Hope
● Discuss Dalvik's VM and JIT architecture
● Present OpenJDK vs Dalvik benchmark results running
http://math.nist.gov/scimark2/
● Discuss opportunities to optimize Dalivk and V8 JITs
● Discuss additional tools to find optimizations
● Plan next steps

8. Break
15 min

9. Saving power in Android with big.
LITTLE
15 min
Nicolas (nico) Pitre
● Overview of big.LITTLE
● Current plans
● Next steps

10. Graphics
30 min
Jesse Barker
● Quick ION overview
● Member platform support for ION/dmabuf
● Re-propose: Replace carve-out heaps with CMA heap
● fbdev to DRM/KMS (Laurent Pinchart and Rob Clark)
● Discuss piglit for Android

11. Break
15 min

12. Android Kernel Upstreaming
15 min
Deepak Saxena
● Status of the Android patchset in the upstream
● Plan for the future

13. Android Kernel Upstreaming
Feature Status
Wakelocks API merged, waiting for new Android userland
Ashmem Undergone many iterations since 2011, hope for 3.9 merge
Ram Console Merged upstream as pstore, waiting for new Android userland
Alarm Timers API merged, driver code changes in progress
FIQ Debugger Core merged as KGDB extension, remaining bit aiming for 3.8
Lowmem Killer Very active, requires rethinking Linux memory management
Key Reset Good progress, targeting 3.8 kernel
Monotonic EvDev Kernel changes upstream waiting for new Android userland
GPIO Timers No active development
ETM No active development
Netfilter Changes No active development
Binder No active development

14. Embedded Android
30 min
Karim Yaghmour (Remote)
● Why are new products using Android as a base?
● Discuss lowering barriers to development
● Discuss Android as an X app
● Discuss headless Android
● Create project list

15. Break
15 min

16. Android Productization Challenges at
ST-Ericsson
15 min
ST-E Android Engineers
● Discuss past issues in creating Android products
● Discuss new issues and get feedback

17. Upstream to productization,
productization to upstream
15 min
Zach Pfeffer
● Discuss how to streamline upstreaming and
productization synchronization

18. Questions and Action Item Review
15 min
Zach Pfeffer
● Answer questions
● Make sure Actions are recorded