https://wiki.linaro.org/projects/big.LITTLE.MP

Roadmap Cards
=============

http://cards.linaro.org/browse/CARD-34
Closeout
* A script has been created that emulates a big.LITTLE system on an
x86 system by tuning down 2 processors in a cluster to emulate the A7
processors.
* Simulation tools and corresponding descriptions are located at:
http://git.linaro.org/gitweb?p=people/rob_lee/asymm_cpu_emu.git.
* The perf record and playback feature allows a workload to be
defined, recorded and then played back later. This has been released
in 2012.07 LEB. It works in the mainline kernel as of 3.6-rc1
* A tools to create webkit-based web-browsing benchmarks was created
(http://git.linaro.org/gitweb?p=people/antipov/testbrowser.git;a=summary)
* update the card closeout related to the pending deliverables for the
simulator + workloads (mention that the simulator part was not
complete, and more mobile workloads should be defined) and create a
new card to handle that deliverable in Q3and create a new card for Q3
to cover these pending items


http://cards.linaro.org/browse/CARD-35
Closeout
* Hotplug optimizations are in the git tree:
git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq.git
review-wq-hotplug.
* Hotplug documentation is at:
https://wiki.linaro.org/WorkingGroups/PowerManagement/Doc/Hotplug#CPU_hotplug_on_latest_kernel
* Asymmetric support for ARM accepted by Russell and have been merged into 3.6
* Several cpuidle changes have already been accepted in mainline and
adding cpu-specific idle tables is being reviewed currently.


Blueprints
=========

https://blueprints.launchpad.net/linaro-power-kernel/+spec/perf-record-replay
- Broken in mainline, dmitry is working on fixing it.
- In progress

https://blueprints.launchpad.net/linaro-power-kernel/+spec/big.little.mp-hotplug-performance-improvements
- In progress

https://blueprints.launchpad.net/linaro-power-kernel/+spec/cpuidle-add-cpu-specific-states-capability
- In progress

https://blueprints.launchpad.net/linaro-power-kernel/+spec/cpuidle-upstream-improvements
- In progress

https://blueprints.launchpad.net/linaro-qa/+spec/sched-test-porting-to-android
- Started

Miscellaneous items
=================
Fastmodels:
 - Kerrnel boots
 - booting with all cores , bootwrapper config needs more work.
 - Not released with LT this cycle

Testplan
 - Dates need to be revised
 - Testing blueprints are being drafted.

Big-LITTLE-MP-v5 (together with the updated multiplatform topic) has
been merged into linux-linaro-core-tracking tree. The tag is
llct-20120814.0.
1. Removed from this merge:
   - cpuidle-next-v4 - Already in rc1
   - wq-hotplug-v1 - Already in rc1
   - arm-asymmetric-support-v3 - Only one patch not mailined others are dropped
2. Rebased over v3.6-rc1
3. Extra patch from Morten/Tixy
For a more complete list please see:
http://lists.linaro.org/pipermail/linaro-dev/2012-August/013125.html

Thomas Gleixner's CPU-hotplug-kthread infrastructure patches and
bugfixes by Paul McKenney have been accepted into tip


The project plan is at
https://docs.google.com/a/linaro.org/document/d/1XI9FaEd6dYfCEDezboF7gWtrTOmOrShUVoDOy1hr-5I/edit#


-- 
David Zinman
Linaro Release Manager | Project Manager
Linaro.org | Open source software for ARM SoCs

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