On Wed, Apr 08, 2015 at 03:42:07PM +0200, Cédric Le Goater wrote:
> The new OPAL device tree adds a few properties which can be used to add
> extra information on the sensor label.
>
> In the case of a cpu core sensor, the firmware exposes the physical
> identifier of the core in the "ibm,pir" property. The driver
> translates this identifier in a linux cpu number and prints out a
> range corresponding to the hardware threads of the core (as they
> share the same sensor).
>
> The numbering gives a hint on the localization of the core in the
> system (which socket, which chip).
>
> Signed-off-by: Cédric Le Goater <clg@xxxxxxxxxx>
> ---
>
> Changes since v3:
>
> - removed error message in case of an unknown physical cpu number
>
> Changes since v2:
>
> - fix bogus logical cpu retrieval
> - use 'threads_per_core' to print out cpu range
>
> Changes since v1:
>
> - check cpu validity before printing out the attribute label.
> if invalid, use a "phy" prefix to distinguish a linux cpu
> number from a physical cpu number.
>
> drivers/hwmon/ibmpowernv.c | 41 +++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 41 insertions(+)
>
> Index: linux.git/drivers/hwmon/ibmpowernv.c
> ===================================================================
> --- linux.git.orig/drivers/hwmon/ibmpowernv.c
> +++ linux.git/drivers/hwmon/ibmpowernv.c
> @@ -30,6 +30,7 @@
> #include <linux/platform_device.h>
> #include <asm/opal.h>
> #include <linux/err.h>
> +#include <asm/cputhreads.h>
>
> #define MAX_ATTR_LEN 32
> #define MAX_LABEL_LEN 64
> @@ -110,12 +111,52 @@ static ssize_t show_label(struct device
> return sprintf(buf, "%s\n", sdata->label);
> }
>
> +static int __init get_logical_cpu(unsigned int hwcpu)
> +{
> + int cpu;
> +
> + for_each_possible_cpu(cpu)
> + if (get_hard_smp_processor_id(cpu) == hwcpu)
drivers/hwmon/ibmpowernv.c: In function 'get_logical_cpu':
drivers/hwmon/ibmpowernv.c:119:38: warning: comparison between signed and
unsigned integer expressions [-Wsign-compare]
if (get_hard_smp_processor_id(cpu) == hwcpu)
^
Guenter
_______________________________________________
lm-sensors mailing list
lm-sensors@xxxxxxxxxxxxxx
http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
