linux-kernel - Re: [PATCH] Documentation: dt-bindings: Fix incorrect statement

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Date:   Fri, 4 Jun 2021 14:41:59 -0500
From:   Rob Herring <robh@...nel.org>
To:     Yanan Wang <wangyanan55@...wei.com>
Cc:     Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org,
        wanghaibin.wang@...wei.com
Subject: Re: [PATCH] Documentation: dt-bindings: Fix incorrect statement

On Fri, May 21, 2021 at 05:57:20PM +0800, Yanan Wang wrote:
> It's found when reading the Doc.

Please improve the subject so we have some clue as to what the change is 
and what it applies to.
 
> In a SMP system, the hierarchy of CPUs now can be defined through
> four not three entities (socket/cluster/core/thread), so correct
> the statement to avoid possible confusion.
> 
> Since we are already there, also drop an extra space and tweak
> the title alignment. No real context change at all.

Since already here, converting to schema would be preferred over trivial 
fixes.

> 
> Cc: Rob Herring <robh+dt@...nel.org>
> Cc: Paul Walmsley <paul.walmsley@...ive.com>
> Cc: Palmer Dabbelt <palmer@...belt.com>
> Cc: Albert Ou <aou@...s.berkeley.edu>
> Signed-off-by: Yanan Wang <wangyanan55@...wei.com>
> ---
>  Documentation/devicetree/bindings/cpu/cpu-topology.txt | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/cpu/cpu-topology.txt b/Documentation/devicetree/bindings/cpu/cpu-topology.txt
> index 9bd530a35d14..8b23a98c283c 100644
> --- a/Documentation/devicetree/bindings/cpu/cpu-topology.txt
> +++ b/Documentation/devicetree/bindings/cpu/cpu-topology.txt
> @@ -6,7 +6,7 @@ CPU topology binding description
>  1 - Introduction
>  ===========================================
>  
> -In a SMP system, the hierarchy of CPUs is defined through three entities that
> +In a SMP system, the hierarchy of CPUs is defined through four entities that
>  are used to describe the layout of physical CPUs in the system:
>  
>  - socket
> @@ -75,7 +75,7 @@ whose bindings are described in paragraph 3.
>  
>  The nodes describing the CPU topology (socket/cluster/core/thread) can
>  only be defined within the cpu-map node and every core/thread in the
> -system must be defined within the topology.  Any other configuration is
> +system must be defined within the topology. Any other configuration is
>  invalid and therefore must be ignored.
>  
>  ===========================================
> @@ -91,9 +91,9 @@ cpu-map child nodes which do not share a common parent node can have the same
>  name (ie same number N as other cpu-map child nodes at different device tree
>  levels) since name uniqueness will be guaranteed by the device tree hierarchy.
>  
> -===========================================
> +============================================
>  3 - socket/cluster/core/thread node bindings
> -===========================================
> +============================================
>  
>  Bindings for socket/cluster/cpu/thread nodes are defined as follows:
>  
> -- 
> 2.19.1