linux-kernel - Re: [PATCH v2 0/9] CPU enable method based SMP/hotplug + MSM conversion

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Message-ID: <52CB2BDF.9040208@codeaurora.org>
Date:	Mon, 06 Jan 2014 14:19:11 -0800
From:	Stephen Boyd <sboyd@...eaurora.org>
To:	linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
	Mark Rutland <mark.rutland@....com>,
	Arnd Bergmann <arnd@...db.de>,
	Russell King <linux@....linux.org.uk>
CC:	David Brown <davidb@...eaurora.org>,
	Rohit Vaswani <rvaswani@...eaurora.org>,
	linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
	Kumar Gala <galak@...eaurora.org>
Subject: Re: [PATCH v2 0/9] CPU enable method based SMP/hotplug + MSM conversion

Ping? Can anyone take a look at the generic ARM and DT binding patches
and provide acks/reviews? I'd like to send this through arm-soc via the
MSM tree if possible.

On 12/23/13 16:39, Stephen Boyd wrote:
> This is a rework of patches sent a months back by Rohit[1].
> The goal of these patches is to add support for SMP and (basic)
> hotplug on MSM based SoCs. To get there, we add support for a
> generic way to hook in SMP/hotplug support code based on DT. To
> show how it's used, we convert the MSM8660 SMP support code over
> to the new method. After that we add support for the rest of the
> upstream MSM SoCs (note these patches are piled high on top of
> Rohit's patches to add 8074 support to MSM[2] and my follow ups[3,4],
> but this should only matter to the MSM maintainers).
>
> This is one of the last items of code that still requires us to have
> a mach directory and a machine descriptor. We should be able to move
> the hotplug/smp code out of mach directories if this approach is
> accepted.
>
> Changes since v1:
>  * Added pointers from cpu nodes to saw and acc nodes
>  * Squashed nr_cpus removal into reorganization patch
>  * Reworked bindings/documentation
>  * Rebased onto v3.13-rc4
>
> [1] https://lkml.org/lkml/2013/8/1/770
> [2] https://lkml.org/lkml/2013/10/17/520
> [3] https://lkml.org/lkml/2013/10/18/406
> [4] http://lkml.org/lkml/2013/10/28/501
>  
>
> Rohit Vaswani (6):
>   devicetree: bindings: Document Krait/Scorpion cpus and enable-method
>   ARM: msm: Remove pen_release usage
>   ARM: msm: Re-organize platsmp to make it extensible
>   ARM: msm: Add SMP support for KPSSv1
>   ARM: msm: Add SMP support for KPSSv2
>   ARM: dts: msm: Add nodes necessary for SMP boot
>
> Stephen Boyd (3):
>   devicetree: bindings: Document qcom,kpss-acc
>   devicetree: bindings: Document qcom,saw2 node
>   ARM: Introduce CPU_METHOD_OF_DECLARE() for cpu hotplug/smp
>
>  Documentation/devicetree/bindings/arm/cpus.txt     |  25 +-
>  .../devicetree/bindings/arm/msm/qcom,kpss-acc.txt  |  30 ++
>  .../devicetree/bindings/arm/msm/qcom,saw2.txt      |  35 ++
>  arch/arm/boot/dts/qcom-msm8660-surf.dts            |  24 ++
>  arch/arm/boot/dts/qcom-msm8960-cdp.dts             |  52 +++
>  arch/arm/boot/dts/qcom-msm8974.dtsi                |  69 ++++
>  arch/arm/include/asm/smp.h                         |   9 +
>  arch/arm/kernel/devtree.c                          |  40 +++
>  arch/arm/mach-msm/Makefile                         |   2 +-
>  arch/arm/mach-msm/board-dt.c                       |  14 -
>  arch/arm/mach-msm/common.h                         |   1 -
>  arch/arm/mach-msm/headsmp.S                        |  39 ---
>  arch/arm/mach-msm/hotplug.c                        |  31 +-
>  arch/arm/mach-msm/platsmp.c                        | 371 ++++++++++++++++-----
>  arch/arm/mach-msm/scm-boot.h                       |   8 +-
>  include/asm-generic/vmlinux.lds.h                  |  10 +
>  16 files changed, 595 insertions(+), 165 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/arm/msm/qcom,kpss-acc.txt
>  create mode 100644 Documentation/devicetree/bindings/arm/msm/qcom,saw2.txt
>  delete mode 100644 arch/arm/mach-msm/headsmp.S
>


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