this is a repost of version 7 of "CPUs capacity information for heterogeneous
systems" patchset  (please refer to previous postings to get some context).
I only added Juno r1 dts, as discussed off-line with Sudeep meanwhile (no code
changes at all, so that's why I'm saying this is a repost).
I'm reposting as I didn't receive any comment (despite pinging people) on the
original v7 posting (apart from Vincent acking patches 2 and 4, thanks!). I
then waited until merge window for 4.9 was closed.
I'm thus now assuming that everybody is OK with the patches and that they can
be queued for 4.10 (we certainly need this plumbing at this point). Please
speak if my assumption is wrong (and provide feedback! :).
Otherwise I'm going to:
- use Russell's patching system for patches 2 and 8
- ask Sudeep to pull patches 3,5,6 and 7
- ask Catalin/Will to pull patches 1,4 and 9
Do you think we might get into trouble splitting the merge process this way?
Please let me know how to proceed otherwise.
As per orginal v7 posting, patches high level description:
o 01/09 introduces documentation for the new optional DT binding
o [02-07]/09 add cpu-capacity attribute to TC2, Juno, Juno r1 and Juno r2 DTs
and provide parsing of such information at boot time
o [08-09]/09 introduce sysfs attribute
In case you would like to test this out, I updated the branch here:
This branch contains additional patches, useful to better understand how CPU
capacity information is actually used by the scheduler.
These patches also form the basis for Morten/Dietmar's "Clean-ups and
asymmetric cpu capacity support" series  (and the EAS stack in general).
 v1 - https://lkml.org/lkml/2015/11/23/391
v2 - https://lkml.org/lkml/2016/1/8/417
v3 - https://lkml.org/lkml/2016/2/3/405
v4 - https://lkml.org/lkml/2016/3/18/350
v5 - https://lkml.org/lkml/2016/6/15/291
v6 - https://lkml.org/lkml/2016/7/19/419
v7 - https://lkml.org/lkml/2016/9/5/409
Juri Lelli (9):
Documentation: arm: define DT cpu capacity-dmips-mhz bindings
arm: parse cpu capacity-dmips-mhz from DT
arm, dts: add TC2 cpu capacity-dmips-mhz information
arm64: parse cpu capacity-dmips-mhz from DT
arm64, dts: add Juno cpu capacity-dmips-mhz information
arm64, dts: add Juno r1 cpu capacity-dmips-mhz information
arm64, dts: add Juno r2 cpu capacity-dmips-mhz information
arm: add sysfs cpu_capacity attribute
arm64: add sysfs cpu_capacity attribute
.../devicetree/bindings/arm/cpu-capacity.txt | 236 +++++++++++++++++++++
Documentation/devicetree/bindings/arm/cpus.txt | 10 +
arch/arm/boot/dts/vexpress-v2p-ca15_a7.dts | 5 +
arch/arm/kernel/topology.c | 229 +++++++++++++++++++-
arch/arm64/boot/dts/arm/juno-r1.dts | 6 +
arch/arm64/boot/dts/arm/juno-r2.dts | 6 +
arch/arm64/boot/dts/arm/juno.dts | 6 +
arch/arm64/kernel/topology.c | 232 +++++++++++++++++++-
8 files changed, 728 insertions(+), 2 deletions(-)
create mode 100644 Documentation/devicetree/bindings/arm/cpu-capacity.txt