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[Blueprint pwr-sched-mc-study] Study sched_mc for Arm

 

Blueprint changed by Vincent Guittot:

Whiteboard changed:
  *Arm topology definition :
  MIPDR register provides all thread/core/package info for Arm topology description
  MPIDR register is accessed with MRC instruction
  map MPIDR info on kernel topology
  
  sched_mc uses topology description for creating sched_domain
  
  *Timer and irq migration
  available. need to check how/which pinned timer can impact power saving efficiency of sched_mc
  
  *sched_mc
  Default sched_domain init can be overwritten by arch specific one. Study if we need to define some arm specific
  initializations
  
  Work Items for 2011.07:
  [vincent-guittot] read MPIDR register on ST-Ericsson platforms: DONE
  [amitdanielk] read MPIDR register on Samsung platforms: DONE
  [vishwanath-bs] read MPIDR register on omap4 platforms: DONE
  [lorenzo-pieralisi] read MPIDR register on ELBA platforms: DONE
  [vincent-guittot] consolidate MPIDR register results: DONE
  [vincent-guittot] define scheduling topology for ARM: DONE
  [vincent-guittot] add default topology definition for Arm platform: DONE
  [vincent-guittot] test default topology definition for Arm platform: DONE
  
  Work Items for 2011.08
  [vincent-guittot] study impact flags and fields of struct sched_domain in scheduling policy: DONE
  [vincent-guittot] study the interest of adding some arm platform dedicated SD_XXX_INIT configuration: DONE
  
  these items were moved to https://blueprints.launchpad.net/linaro-pm-wg/+spec/sched-mc-for-arm
  [robertdavidlee] read MPIDR register on Freescale multi-core platforms: TODO
- [vincent-guittot] study the interest of changing topology with sched_mc mode: DONE
+ [vincent-guittot] study the interest of changing topology with sched_mc mode: TODO
  [vincent-guittot] study the pinned timer impact on sched_mc power mode: TODO
  [vincent-guittot] study the interest of using FDT for cpu topology definition: TODO

-- 
Study sched_mc for Arm
https://blueprints.launchpad.net/linaro-pm-wg/+spec/pwr-sched-mc-study