On 05/02/2013 02:33 AM, Nicolas Pitre wrote:
I'm delighted to announce that the Linaro Technical Steering Committee
has approved the release of the big.LITTLE in-kernel switcher (IKS) code
to the public.
So here it is:
Branch big.LITTLE-IKS-snapshot of
git://git.linaro.org/landing-teams/working/arm/kernel.git
Although this is a snapshot of our latest IKS code, it still needs some
minor tidying before it is submitted upstream. So please consider the
above as a temporary branch for people to look and play with, and not a
branch that we'll keep stable and maintain.
This code was also developed for and tested on the VExpress TC2
development platform. An MCPM backend and possibly a special cpufreq
clock driver are required for this code to be usable on other platforms.
The switcher concept is discussed here:
http://lwn.net/Articles/481055/
Porting documentation is available here:
https://wiki.linaro.org/projects/big.LITTLE.MP/Big.Little.Switcher/Docs/porting-guide
The switcher code description is available here (slightly out of date):
https://wiki.linaro.org/projects/big.LITTLE.MP/Big.Little.Switcher/Docs/in-kernel-code
And a review of the MCPM layer upon which IKS and HMP rely:
http://lwn.net/Articles/539082/
The core MCPM patches are queued for inclusion into the v3.10 mainline
kernel. The MCPM backend for TC2 and the IKS patches will tentatively
be submitted for v3.11.
It's good news; i will firstly study code and try it on our side, hope
later we can have more detailed discussion.
Really great work, Nico. :-)
Thx,
Leo Yan
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