linux-kernel - Re: [PATCH 0/7] Fix issues and factorize arm/arm64 capacity information code

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Date:   Mon, 30 Jan 2017 12:29:01 +0000
From:   Juri Lelli <juri.lelli@....com>
To:     linux-kernel@...r.kernel.org
Cc:     linux-pm@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        devicetree@...r.kernel.org, peterz@...radead.org,
        vincent.guittot@...aro.org, robh+dt@...nel.org,
        mark.rutland@....com, linux@....linux.org.uk, sudeep.holla@....com,
        lorenzo.pieralisi@....com, catalin.marinas@....com,
        will.deacon@....com, morten.rasmussen@....com,
        dietmar.eggemann@....com, broonie@...nel.org,
        gregkh@...uxfoundation.org
Subject: Re: [PATCH 0/7]  Fix issues and factorize arm/arm64 capacity
 information code

Hi,

ping.

I'd need more advice on this set, especially on how and if patch 6 could fly.

Thanks,

- Juri

On 19/01/17 14:37, Juri Lelli wrote:
> Hi,
> 
> arm and arm64 topology.c share a lot of code related to parsing of capacity
> information. This set of patches proposes a solution (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 5 patches are actually fixes for the current code.
> 
> Patch 6 is the actual refactoring.
> 
> Last patch removes one of the extern symbols by changing a bit the now common
> code. We still remain with some other externs, which are not nice. Moving them
> in some header file solves the issue, should I just create a new include/
> linux/arch_topology.h file and move them there?
> 
> The set is based on top of linux/master (4.10-rc4 fb1d8e0e2c50) and it is also
> available from:
> 
>  git://linux-arm.org/linux-jl.git upstream/default_caps_factorize
> 
> Best,
> 
> - Juri
> 
> Juri Lelli (7):
>   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
>   arm64: remove wrong CONFIG_PROC_SYSCTL ifdef
>   arm, arm64: factorize common cpu capacity default code
>   arm,arm64,drivers: reduce scope of cap_parsing_failed
> 
>  Documentation/ABI/testing/sysfs-devices-system-cpu |   7 +
>  Documentation/devicetree/bindings/arm/cpus.txt     |   4 +-
>  arch/arm/Kconfig                                   |   1 +
>  arch/arm/kernel/topology.c                         | 216 +------------------
>  arch/arm64/Kconfig                                 |   1 +
>  arch/arm64/kernel/topology.c                       | 218 +------------------
>  drivers/base/Kconfig                               |   8 +
>  drivers/base/Makefile                              |   1 +
>  drivers/base/arch_topology.c                       | 240 +++++++++++++++++++++
>  9 files changed, 269 insertions(+), 427 deletions(-)
>  create mode 100644 drivers/base/arch_topology.c
> 
> -- 
> 2.10.0
>