linux/tools/power/cpupower
Martin Kaistra 527b7779e5 cpupower: speed up generating git version string
The variable VERSION is expanded for every use of CFLAGS. This causes
"git describe" to get called multiple times on the kernel tree, which
can be quite slow.

The git revision does not change during build, so we can use simple
variable expansion to set VERSION.

Signed-off-by: Martin Kaistra <martin.kaistra@linutronix.de>
Acked-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2020-08-20 13:04:47 -06:00
..
bench cpupower: Add missing newline at end of file 2019-08-29 09:49:26 -06:00
debug cpupowerutils: fix spelling mistake "dependant" -> "dependent" 2020-08-20 11:19:23 -06:00
lib cpupower: Fix NULL but dereferenced coccicheck errors 2020-07-06 16:11:04 -06:00
man ACPI updates for 5.9-rc1 2020-08-03 20:37:22 -07:00
po cpupower: update German translation 2019-08-29 10:18:52 -06:00
utils cpupower: Fix comparing pointer to 0 coccicheck warns 2020-07-06 16:10:40 -06:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
cpupower-completion.sh cpupower : Auto-completion for cpupower tool 2018-12-05 07:52:45 -07:00
Makefile cpupower: speed up generating git version string 2020-08-20 13:04:47 -06:00
README cpupower: Remove dead link to homepage, and update the targets built. 2014-05-17 00:36:36 +02:00
ToDo cpupower: ToDo: Update ToDo with ideas for per_cpu_schedule handling 2019-11-05 17:23:23 -07:00

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