linux/tools/power/cpupower
Abhishek Goel d80a4ac208 cpupower : Handle set and info subcommands correctly
Cpupower tool has set and info options which are being used only by
x86 machines. This patch removes support for these two subcommands
from cpupower utility for POWER. Thus, these two subcommands will now be
available only for intel.
This removes the ambiguous error message while using set option in case
of using non-intel systems.

Without this patch on a POWER system:

root@ubuntu:~# cpupower info
System does not support Intel's performance bias setting

root@ubuntu:~# cpupower set -b 10
Error setting perf-bias value on CPU

With this patch on a POWER box:

root@ubuntu:~# cpupower info
Subcommand not supported on POWER

Same result for set subcommand.
This patch does not affect results on a intel box.

Signed-off-by: Abhishek Goel <huntbag@linux.vnet.ibm.com>
Acked-by: Thomas Renninger <trenn@suse.de>
Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2019-11-04 13:11:57 -07:00
..
bench cpupower: Add missing newline at end of file 2019-08-29 09:49:26 -06:00
debug kbuild: create *.mod with full directory path and remove MODVERDIR 2019-07-18 02:19:31 +09:00
lib treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 285 2019-06-05 17:36:37 +02:00
man cpupower: correct spelling of interval 2019-06-04 09:04:08 -06:00
po cpupower: update German translation 2019-08-29 10:18:52 -06:00
utils cpupower : Handle set and info subcommands correctly 2019-11-04 13:11:57 -07:00
.gitignore tools/power/cpupower: add libcpupower.so.0.0.1 to .gitignore 2017-11-09 10:52:22 -07:00
cpupower-completion.sh cpupower : Auto-completion for cpupower tool 2018-12-05 07:52:45 -07:00
Makefile tools/power/cpupower: fix 64bit detection when cross-compiling 2019-08-29 09:50:54 -06:00
README cpupower: Remove dead link to homepage, and update the targets built. 2014-05-17 00:36:36 +02:00
ToDo cpupower: Remove dead link to homepage, and update the targets built. 2014-05-17 00:36:36 +02:00

The cpupower package consists of the following elements:

requirements
------------

On x86 pciutils is needed at runtime (-lpci).
For compilation pciutils-devel (pci/pci.h) and a gcc version
providing cpuid.h is needed.
For both it's not explicitly checked for (yet).


libcpupower
----------

"libcpupower" is a library which offers a unified access method for userspace
tools and programs to the cpufreq core and drivers in the Linux kernel. This
allows for code reduction in userspace tools, a clean implementation of
the interaction to the cpufreq core, and support for both the sysfs and proc
interfaces [depending on configuration, see below].


compilation and installation
----------------------------

make
su
make install

should suffice on most systems. It builds libcpupower to put in
/usr/lib; cpupower, cpufreq-bench_plot.sh to put in /usr/bin; and
cpufreq-bench to put in /usr/sbin. If you want to set up the paths
differently and/or want to configure the package to your specific
needs, you need to open "Makefile" with an editor of your choice and
edit the block marked CONFIGURATION.


THANKS
------
Many thanks to Mattia Dongili who wrote the autotoolization and
libtoolization, the manpages and the italian language file for cpupower;
to Dave Jones for his feedback and his dump_psb tool; to Bruno Ducrot for his
powernow-k8-decode and intel_gsic tools as well as the french language file;
and to various others commenting on the previous (pre-)releases of 
cpupower.


        Dominik Brodowski