[PATCH v3 0/2] powerpc: add support for new hcall H_BEST_ENERGY

[Vaidyanathan Srinivasan]

Hi Ben,

The following series adds a kernel module for powerpc pseries platforms in
order to export platform energy management capabilities.

The module exports data from a new hypervisor call H_BEST_ENERGY.

Comments and suggestions made on the previous iteration of the patch
has been incorporated.

Changed in v3:

* Added more documentation in the cleanup patch
* Removed RFC tag, rebased and tested on 2.6.35-rc3
* Ready for inclusion in powerpc/next tree for further testing

Changes in v2:

[1] [RFC PATCH v2 0/2] powerpc: add support for new hcall H_BEST_ENERGY
http://lists.ozlabs.org/pipermail/linuxppc-dev/2010-May/082246.html

* Cleanup cpu/thread/core APIs
* Export APIs to module instead of threads_per_core
* Use of_find_node_by_path() instead of of_find_node_by_name()
* Error checking and whitespace cleanups

First version:
[2] [RFC] powerpc: add support for new hcall H_BEST_ENERGY
http://lists.ozlabs.org/pipermail/linuxppc-dev/2010-March/080796.html

Please review and include in powerpc/next tree for further testing.  I will
add the following enhancements incrementally:

* Detect h_call support from ibm,hypertas-functions
* Limit sysfs file creation only on hcall availability

This patch series will apply on 2.6.35-rc3 as well as powerpc/next tree.

Thanks,
Vaidy
---

Vaidyanathan Srinivasan (2):
      powerpc: cleanup APIs for cpu/thread/core mappings
      powerpc: add support for new hcall H_BEST_ENERGY


 arch/powerpc/include/asm/cputhreads.h           |   15 +
 arch/powerpc/include/asm/hvcall.h               |    3 
 arch/powerpc/kernel/smp.c                       |   19 +-
 arch/powerpc/mm/mmu_context_nohash.c            |   12 +
 arch/powerpc/platforms/pseries/Kconfig          |   10 +
 arch/powerpc/platforms/pseries/Makefile         |    1 
 arch/powerpc/platforms/pseries/pseries_energy.c |  258 +++++++++++++++++++++++
 7 files changed, 302 insertions(+), 16 deletions(-)
 create mode 100644 arch/powerpc/platforms/pseries/pseries_energy.c

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