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

Work Items for functional completion:
https://wiki.linaro.org/projects/big.LITTLE.MP/WorkItems

Roadmap Cards:
Epic big.LITTLE MP card - http://cards.linaro.org/browse/CARD-190

Main Project page:
https://launchpad.net/linaro-big-little-system

Announcement

==============

Please welcome Serge Broslavsky as the new big.LITTLE project manager who will be taking over from David Zinman as the project moves forward. Serge will add this project on top of his duties as project manager for the Power Management team and the Virtualization project.

Development
=============

Big.LITTLE MP is following a two-track development:

A Reference (stable) patchset:

https://git.linaro.org/gitweb?p=arm/big.LITTLE/mp.git;a=shortlog;h=refs/heads/big-LITTLE-MP-master-v16

and an upstream (work in progress) patchset:

https://git.linaro.org/gitweb?p=arm/big.LITTLE/mp.git;a=shortlog;h=refs/heads/big-LITTLE-MP-upstream-v2

Automated benchmarking code is ready (reviewing), permissions to be added.

Authentication is being added to the API.
Still having dependency on Android/LAVA teams

Blueprint Update
-------------------------

https://blueprints.launchpad.net/linaro-big-little-system/+spec/big-little-mp-integration-tree

No issues, moving forward

https://blueprints.launchpad.net/linaro-big-little-system/+spec/cpuidle-add-cpu-specific-states-capability

Postpone to the next month.

https://blueprints.launchpad.net/linaro-big-little-system/+spec/small-task-packing-in-scheduler

Preparing a more aggressive packing small tasks patchset version

Discussion around fix patches (rt task issue and nr_busy_cpus issue): almost ok now

Prototype should be available this week

https://blueprints.launchpad.net/linaro-big-little-system/+spec/cpu-hot-plug-latency

kernel crash happens when test enables function trace; reported this issue and updated blueprint.

https://blueprints.launchpad.net/linaro-big-little-system/+spec/document-bl-customisation

produced a draft

https://blueprints.launchpad.net/linaro-big-little-system/+spec/sched-cooperation-with-dvfs

Long-lasting BP (6+ month to get something), just starting

QA
===

big.LITTLE MP LAVA Dashboard
http://validation.linaro.org/lava-server/dashboard/image-reports/linaro-android_vexpress-linaro-mp

Testing:

#Cases #Run Pass Fail Absolute pass rate

Regression 20 19 19 0 100 %
mpbasicsuite 14 10 10 0 100 %
mpcoresuite 10 6 5 1 90 %
mpextendedsuite 20 10 6 4 60 %
mploadbalance 2 2 2 0 100 %

http://lists.linaro.org/pipermail/linaro-dev/2013-April/015793.html

Bugs:
https://bugs.launchpad.net/linaro-big-little-system/+bugs?field.tag=bl-mp

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