On Wed, Aug 02, 2017 at 05:14:11PM +0200, Felix Schnizlein wrote:
> Create a new sysfs attribute group called 'info' for each
> online cpu. The cleaned up cpuinfo shows up in a sysfs
> subdirectory here: /sys/devices/system/cpu/cpu#/info.
> 
> Define preprocessor macros (CPUINFO_DEFINE_* and CPUINFO_ATTR) to make
> defining new sysfs attributes for cpuinfo more easy.
> 
> Add basic documentation for the info sysfs tree.
> 
> Signed-off-by: Felix Schnizlein <[email protected]>
> Signed-off-by: Thomas Renninger <[email protected]>
> ---
>  Documentation/ABI/testing/sysfs-devices-system-cpu | 17 ++++++++
>  arch/Kconfig                                       |  3 ++
>  drivers/base/Makefile                              |  1 +
>  drivers/base/cpuinfo.c                             | 48 
> ++++++++++++++++++++++
>  include/linux/cpuhotplug.h                         |  1 +
>  include/linux/cpuinfo.h                            | 43 +++++++++++++++++++
>  6 files changed, 113 insertions(+)
>  create mode 100644 drivers/base/cpuinfo.c
>  create mode 100644 include/linux/cpuinfo.h
> 
> diff --git a/Documentation/ABI/testing/sysfs-devices-system-cpu 
> b/Documentation/ABI/testing/sysfs-devices-system-cpu
> index f3d5817..fbaf165 100644
> --- a/Documentation/ABI/testing/sysfs-devices-system-cpu
> +++ b/Documentation/ABI/testing/sysfs-devices-system-cpu
> @@ -373,3 +373,20 @@ Contact: Linux kernel mailing list 
> <[email protected]>
>  Description: information about CPUs heterogeneity.
>  
>               cpu_capacity: capacity of cpu#.
> +
> +What:                /sys/devices/system/cpu/cpu#/info/
> +Date:                June 2017
> +Contact:     Linux kernel mailing list <[email protected]>
> +Description: Various information about the online cpu. Which attributes are
> +             available depends on the architecture, kernel configuration and
> +                cpu model.

tabs?

> +
> +What:                /sys/devices/system/cpu/cpu#/info/
> +             /sys/devices/system/cpu/cpu#/info/vendor_id
> +             /sys/devices/system/cpu/cpu#/info/cpu_family
> +             /sys/devices/system/cpu/cpu#/info/model
> +             /sys/devices/system/cpu/cpu#/info/model_name
> +             /sys/devices/system/cpu/cpu#/info/stepping
> +             /sys/devices/system/cpu/cpu#/info/flags
> +             /sys/devices/system/cpu/cpu#/info/bugs
> +             /sys/devices/system/cpu/cpu#/info/bogomips

Can you guarantee that all arches will be able to provide these?

thanks,

greg k-h

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