linux-kernel - Re: [PATCH v3 2/5] powercap/drivers/dtpm: Create a registering system

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Message-ID: <bbafd2d8-ea89-5e96-5742-6d1a924e3649@arm.com>
Date:   Thu, 11 Mar 2021 10:23:11 +0000
From:   Lukasz Luba <lukasz.luba@....com>
To:     Daniel Lezcano <daniel.lezcano@...aro.org>
Cc:     rafael@...nel.org, linux-kernel@...r.kernel.org,
        linux-pm@...r.kernel.org
Subject: Re: [PATCH v3 2/5] powercap/drivers/dtpm: Create a registering system



On 3/10/21 11:02 AM, Daniel Lezcano wrote:
> A SoC can be differently structured depending on the platform and the
> kernel can not be aware of all the combinations, as well as the
> specific tweaks for a particular board.
> 
> The creation of the hierarchy must be delegated to userspace.
> 
> These changes provide a registering mechanism where the different
> subsystems will initialize their dtpm backends and register with a
> name the dtpm node in a list.
> 
> The next changes will provide an userspace interface to create
> hierachically the different nodes. Those will be created by name and

s/hierachically/hierarchically

> found via the list filled by the different subsystem.
> 
> If a specified name is not found in the list, it is assumed to be a
> virtual node which will have children and the default is to allocate
> such node.
> 
> When the node register in the list, the function will be dtpm_register
> where the previous semantic was to create the node. Thus, the
> functions are renamed to reflect their purpose.
> 
> Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
> ---
> 
>   V2:
>     - Fixed error code path by dropping lock
> ---
>   drivers/powercap/dtpm.c     | 161 ++++++++++++++++++++++++++++++++++--
>   drivers/powercap/dtpm_cpu.c |   4 +-
>   include/linux/dtpm.h        |  12 ++-
>   3 files changed, 164 insertions(+), 13 deletions(-)
> 

apart from the above, LGTM

Reviewed-by: Lukasz Luba <lukasz.luba@....com>