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[Blueprint idle-injector-hotplug-research] Research idle cycle injection versus hotplug

 

Blueprint changed by Serge Broslavsky:

Whiteboard changed:
  These items will not be done as cpuoffline is not seen as a way to do power savings upstream.
  [vincent-guittot] implement Ux500 support for CPUoffline: TODO
  [amitdanielk] implement Samsung support for CPUoffline: TODO
  [amitdanielk] analyze power savings with and without CPUoffline support: TODO
  
  Idle injector info:
  http://lwn.net/Articles/383368/
  http://thread.gmane.org/gmane.linux.kernel/973551
  
  Comparative analysis on SMP CPUidle versus SMP CPUidle + hotplug:
  Compare power savings on VDD_MPU using some benchmarks
  Compare power savings on ~VBAT using some benchmarks
  
  The item "forward port idle cycle injector patches to linaro-2.6.39: was
  BLOCKED", but in reality it will never happen.  Google has decided to
  drop these patches and not support them publicly.
  
- [daniel-lezcano, Jan 15th, 2013]  Intel has posted a patch series for "Intel power clamp": 
-     * http://lwn.net/Articles/524668/
+ [daniel-lezcano, 2013-01-15]  Intel has posted a patch series for "Intel power clamp":
+     * http://lwn.net/Articles/524668/
  It is worth study the approach as it could fit our needs to 'sync' the cpus for idling a package.
+ 
+ [ototo, 2013-02-01] Moving unfinished items to 2013.02.

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Research idle cycle injection versus hotplug
https://blueprints.launchpad.net/linaro-power-kernel/+spec/idle-injector-hotplug-research