Nicolas Pitre

29 April 2013 00:41

On Sun, 28 Apr 2013, Leo Yan wrote:

hi Nico & all,

Per Samsung has released their big.LITTLE phone, and the IKS code has been
release in its kernel's source code; so may be now it's good time for us to
know status of IKS from Linaro side:

One thing to note is the released IKS code from Samsung is based on very 
old code from a Linaro perspective i.e. dating from last August or so.  

1. What's the plan for Lianro to release iks related patches?

Due now mcpm related patches are pending for mainline's merge, unfortunately
iks is based on the mcpm patches; so when will u send iks patches to open
source's mailing list?

The MCPM patches have been accepted by Russell and will be merged into 
mainline during the next merge window.

There is a process in progress within Linaro for getting permission to 
publish the latest IKS code. I'll publish the code as soon as I have the 
green light.

On the other hand, do u have plan to merge iks related patches firstly to
Lianro ARM landing team's branch? if so, then it will not depend on mainline
and can be much more efficient.

The IKS patches are maintained on top of the ARM LT tree already.

2. Looked into Samsung's code, there have the cluster switching which is based
on iks (named ikcs); so now in your code base, do u have implemented related
functionality?

No.  That is not a feature you should be wishing for either.  I hope you 
won't need it.

This is rather unfortunate that Samsung had to do that due to hardware 
limitations.  And the way they implemented it is not optimal.


Nicolas

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Leo Yan

28 April 2013 02:07

hi Nico & all,

Per Samsung has released their big.LITTLE phone, and the IKS code has been release in its kernel's source code; so may be now it's good time for us to know status of IKS from Linaro side:

1. What's the plan for Lianro to release iks related patches?

Due now mcpm related patches are pending for mainline's merge, unfortunately iks is based on the mcpm patches; so when will u send iks patches to open source's mailing list?

On the other hand, do u have plan to merge iks related patches firstly to Lianro ARM landing team's branch? if so, then it will not depend on mainline and can be much more efficient.

2. Looked into Samsung's code, there have the cluster switching which is based on iks (named ikcs); so now in your code base, do u have implemented related functionality?