linux

History

Laura Abbott c25badc9ce cpupower: Correct return type of cpu_power_is_cpu_online() in cpufreq-set When converting to a shared library in `ac5a181d06` ("cpupower: Add cpuidle parts into library"), cpu_freq_cpu_exists() was converted to cpupower_is_cpu_online(). cpu_req_cpu_exists() returned 0 on success and -ENOSYS on failure whereas cpupower_is_cpu_online returns 1 on success. Check for the correct return value in cpufreq-set. Link: https://bugzilla.redhat.com/show_bug.cgi?id=1374212 Fixes: `ac5a181d06` (cpupower: Add cpuidle parts into library) Reported-by: Julian Seward <jseward@acm.org> Signed-off-by: Laura Abbott <labbott@redhat.com> Acked-by: Thomas Renninger <trenn@suse.com> Cc: 4.7+ <stable@vger.kernel.org> # 4.7+ Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>		2016-11-01 06:16:52 +01:00
..
bench	cpupower: fix potential memory leak	2016-05-05 01:19:38 +02:00
debug	Creating a common structure initialization pattern for struct option	2015-11-02 02:28:59 +01:00
lib	cpupower: Add cpuidle parts into library	2016-04-28 16:02:29 +02:00
man	Fix cpupower manpages "NAME" section	2016-04-28 16:02:29 +02:00
po	cpupowerutils - cpufrequtils extended with quite some features	2011-07-29 18:35:36 +02:00
utils	cpupower: Correct return type of cpu_power_is_cpu_online() in cpufreq-set	2016-11-01 06:16:52 +01:00
.gitignore	cpupower tools: Update .gitignore for files created in the debug directories	2012-11-27 23:07:18 +01:00
Makefile	cpupower: Add cpuidle parts into library	2016-04-28 16:02:29 +02:00
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

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