Re: [PATCH 1/1] drivers: acpi: add CPU id to cooling device type of processor driver

Rafael J. Wysocki
2016-05-04T21:49:18Z

On Tue, May 3, 2016 at 7:04 AM, Eduardo Valentin <edubezval@gmail.com> wrote:
> Currently, in an ACPI based system, the processor driver registers
> one cooling device per processor. However, the cooling device type
> is the same for each processor. For example, on a system with four
> processors, the sysfs reading of each cooling device would look like:
> ebv@besouro ~ $ cat /sys/class/thermal/cooling_device*/type
> Processor
> Processor
> Processor
> Processor
>
> which turns out to fine. But, some parts of the thermal code may use
> type to identify participating devices in a thermal zone. Besides,
> adding notifications to user space may cause the production of messages
> that may confuse the listener.
>
> For this reason, this patch adds the processor ID cooling device type.
> After this change, the cooling device listing in the same previous example
> would look like this:
> ebv@besouro ~ $ cat /sys/class/thermal/cooling_device*/type
> Processor.0
> Processor.1
> Processor.2
> Processor.3
>
> allowing an easier identification of cooling device target.

Is it not going to confuse any user space scripts or similar?