Re: [PATCH v2 7/8] [PATCH 7/8] drivers/hwmon: Add a generic PECI hwmon client driver

[Miguel Ojeda]

On Thu, Feb 22, 2018 at 2:29 AM, Jae Hyun Yoo
<jae.hyun.yoo@xxxxxxxxxxxxxxx> wrote:
> On 2/21/2018 4:37 PM, Andrew Lunn wrote:
>>>
>>> But even with this change, it still needs to use delayed creation
>>> because BMC side kernel doesn't know how many DIMMs are populated on
>>> a remote server before the remote server completes its memory
>>> training and testing in BIOS, but it needs to check the remote
>>> server's CPU temperature as immediate as possible to make
>>> appropriate thermal control based on the remote CPU's temperature to
>>> avoid any critical thermal issue. What would be a better solution in
>>> this case?
>>
>>
>> You could change this driver so that it supports one DIMM.  Move the
>> 'hotplug' part into another driver which creates and destroys
>> instances of the hwmon DIMM device as the DIMMS come and go.
>>
>> Also, do you need to handle CPU hotplug? You could split the CPU
>> temperature part into a separate hwmon driver? And again create and
>> destroy devices as CPUs come and go?
>>
>>         Andrew
>>
>
> That seems like a possible option. I'll rewrite the hwmon driver again like
> that.
>
> Thanks for the good idea. :)

By the way, in the rewrite, please try to avoid the create*workqueue()
functions (they are deprecated :).

Cheers,
Miguel

>
> Jae