linux-kernel - Re: [PATCH V2 00/11] hwmon: (coretemp) Fixes, improvements and support for large core count

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Date: Sat, 3 Feb 2024 05:40:10 +0000
From: "Zhang, Rui" <rui.zhang@...el.com>
To: "linux@...ck-us.net" <linux@...ck-us.net>, "jdelvare@...e.com"
	<jdelvare@...e.com>
CC: "Yu, Fenghua" <fenghua.yu@...el.com>, "Raj, Ashok" <ashok.raj@...el.com>,
	"linux-hwmon@...r.kernel.org" <linux-hwmon@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH V2 00/11] hwmon: (coretemp) Fixes, improvements and
 support for large core count

On Fri, 2024-02-02 at 10:15 -0800, Guenter Roeck wrote:
> On 2/2/24 01:21, Zhang Rui wrote:
> > Patch 1/11 is a bug fix that should be considered as stable
> > material.
> > Patch 2/11 fixes a user visible sysfs attribute name change.
> > Patch 3/11 is a quick fix to allow coretemp driver to probe more
> > than
> >             128 cores.
> > Patch 4/11 - 10/11 are a series of improvements aim to simplify the
> >             code logic and remove unnecessary macros, variables and
> >             structure fields, and make it easier for patch 11/11.
> > Patch 11/11 converts coretemp driver to use dynamic memory
> > allocation
> >             for core temp_data, so that it is easy to remove the
> >             hardcoded core count limitation when
> > _num_cores_per_package
> >             become available and reliable, which is WIP in
> >            
> > https://lore.kernel.org/all/20240118123127.055361964@linutronix.de/
> > 
> > I can split the first three patches into a separate patch set if
> > needed.
> > 
> > Patch seris V1 has been posted at
> > https://lore.kernel.org/all/20231127131651.476795-1-rui.zhang@intel.com/
> > 
> 
> Change log ?

Changes since V1:
 - Add two new fixes for issues found during code rewrite.
 - Reorder enum coretemp_attr_index to better represent the 
   relationship between each element and keep their value in ascending
   order. Suggested by Ashok.
 - Replace sensor_device_attribute with sensor_device_attribute.
   Suggested by Ashok.
 - Use a dynamic allocated array to save the per core temperature info
   instead of a list. Suggested by Guenter.
 - Simplify the logic for handling pkg temp_data and core temp_data
   and remove unused marcos.

thanks,
rui

> 
> Guenter
> 
> > thanks,
> > rui
> > 
> > ----------------------------------------------------------------
> > Zhang Rui (11):
> >        hwmon: (coretemp) Fix out-of-bounds memory access in
> > create_core_data()
> >        hwmon: (coretemp) Fix bogus core to attr mapping
> >        hwmon: (coretemp) Enlarge per package core count limit
> >        hwmon: (coretemp) Introduce enum for attr index
> >        hwmon: (coretemp) Remove unnecessary dependency of array
> > index
> >        hwmon: (coretemp) Replace sensor_device_attribute with
> > device_attribute
> >        hwmon: (coretemp) Remove redundant pdata->cpu_map[]
> >        hwmon: (coretemp) Abstract core_temp helpers
> >        hwmon: (coretemp) Split package temp_data and core temp_data
> >        hwmon: (coretemp) Remove redundant temp_data->is_pkg_data
> >        hwmon: (coretemp) Use dynamic allocated memory for core
> > temp_data
> > 
> >   drivers/hwmon/coretemp.c | 219 ++++++++++++++++++++++++++--------
> > -------------
> >   1 file changed, 120 insertions(+), 99 deletions(-)
> > 
> > 
> 
>