[Skiboot] [PATCH 4/4] hwmon: (ibmpowernv) pretty print labels
Cedric Le Goater
clg at fr.ibm.com
Wed Apr 8 16:57:11 AEST 2015
Hello Guenter,
On 04/07/2015 09:22 PM, Guenter Roeck wrote:
> Hi Cedric,
>
> On Tue, Apr 07, 2015 at 08:03:46PM +0200, Cedric Le Goater wrote:
>>
>> on a P7 :
>>
>> # ppc64_cpu --info
>> Core 0: 0* 1* 2* 3*
>> Core 1: 4* 5* 6* 7*
>> Core 2: 8* 9* 10* 11*
>> Core 3: 12* 13* 14* 15*
>> Core 4: 16* 17* 18* 19*
>> Core 5: 20* 21* 22* 23*
>>
> How would the 'sensors' output look like on that system ?
> Wouldn't it be something like the following ?
>
> Core 0-7: +29.0°C
> Core 4-11: +29.0°C
yep.
>>> Also, how do you know that the range of CPU IDs is always 8 ?
>>
>> This is a shortcut. The code is for the ibmpowernv platform and assumes
>> that we are running on a P8 (8 hardware threads). It would be better to
>> use a "maximum threads per core" variable but I am not sure this is
>> available, as it is a tunable. I will look into it.
>>
> Tunable how ?
You can switch on and off threads.
> The core code must have some means to detect this number when it initialized
> CPU entries, or am I missing something ?
threads_per_core is what the code needs. v3 is on its way.
Thanks !
C.
More information about the Skiboot
mailing list