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[PATCH v4 0/8] Fix issues and factorize arm/arm64 capacity information code


arm and arm64 topology.c share a lot of code related to parsing of capacity
information. This is v4 of a solution [1] (based on Will's, Catalin's and
Mark's off-line suggestions) to move such common code in a single place:
drivers/base/arch_topology.c (by creating such file and conditionally compiling
it for arm and arm64 only).

First 4 patches are actually fixes for the current code.

Patch 5 is the actual refactoring.

Patch 6 removes one of the extern symbols by changing a bit the now common

Patch 7 removes the remaining externs (as required by Russell during v1 review)
by creating a new header file include/linux/arch_topology.h and including that
from arm, arm64 and drivers.

Last patch addresses Dietmar's comments to v1 and adds a 'atd_' prefix to
interfaces exported by drivers code and used by arch (and potentially others in
the future).

Changes from v3:

 - rebase on top of 4.11-rc7
 - addressed Vincent's comment on patch 3/8
 - removed v3 6/9 as discussed with Russell
 - added Russell and Catalin's Acked-by

The set is based on top of linux/master (4.11-rc7 f61143c45077) and it is also
available from:

 git://linux-arm.org/linux-jl.git upstream/default_caps_factorize-v4


- Juri

[1] v1 - https://marc.info/?l=linux-kernel&m=148483680119355&w=2
    v2 - https://marc.info/?l=linux-kernel&m=148663344018205&w=2
    v3 - http://marc.info/?l=linux-kernel&m=149062080701399&w=2

Juri Lelli (8):
  Documentation: arm: fix wrong reference number in DT definition
  Documentation/ABI: add information about cpu_capacity
  arm: fix return value of parse_cpu_capacity
  arm: remove wrong CONFIG_PROC_SYSCTL ifdef
  arm, arm64: factorize common cpu capacity default code
  arm,arm64,drivers: reduce scope of cap_parsing_failed
  arm,arm64,drivers: move externs in a new header file
  arm,arm64,drivers: add a prefix to drivers arch_topology interfaces

 Documentation/ABI/testing/sysfs-devices-system-cpu |   7 +
 Documentation/devicetree/bindings/arm/cpus.txt     |   4 +-
 arch/arm/Kconfig                                   |   1 +
 arch/arm/kernel/topology.c                         | 221 +------------------
 arch/arm64/Kconfig                                 |   1 +
 arch/arm64/kernel/topology.c                       | 226 +------------------
 drivers/base/Kconfig                               |   8 +
 drivers/base/Makefile                              |   1 +
 drivers/base/arch_topology.c                       | 243 +++++++++++++++++++++
 include/linux/arch_topology.h                      |  17 ++
 10 files changed, 290 insertions(+), 439 deletions(-)
 create mode 100644 drivers/base/arch_topology.c
 create mode 100644 include/linux/arch_topology.h