linux

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History

Nathan Fontenot 3a3ecfdb60 cpupower: Add cpuid cap flag for MSR_AMD_HWCR support Remove the family check for accessing the MSR_AMD_HWCR MSR and replace it with a cpupower cap flag. This update also allows for the removal of the local cpupower_cpu_info variable in cpufreq_has_boost_support() since we no longer need it to check the family. Signed-off-by: Nathan Fontenot <nathan.fontenot@amd.com> Reviewed-by: Robert Richter <rrichter@amd.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>		2021-01-26 09:40:45 -07:00
..
bench	cpupower: add Makefile dependencies for install targets	2021-01-05 11:29:27 -07:00
debug	cpupowerutils: fix spelling mistake "dependant" -> "dependent"	2020-08-20 11:19:23 -06:00
lib	tools/power/cpupower: Read energy_perf_bias from sysfs	2020-11-16 17:42:12 +01:00
man	ACPI updates for 5.9-rc1	2020-08-03 20:37:22 -07:00
po
utils	cpupower: Add cpuid cap flag for MSR_AMD_HWCR support	2021-01-26 09:40:45 -07:00
.gitignore	.gitignore: add SPDX License Identifier	2020-03-25 11:50:48 +01:00
cpupower-completion.sh
Makefile	cpupower: add Makefile dependencies for install targets	2021-01-05 11:29:27 -07:00
README
ToDo	cpupower: ToDo: Update ToDo with ideas for per_cpu_schedule handling	2019-11-05 17:23:23 -07:00

README

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