summaryrefslogtreecommitdiff
path: root/tools/power/cpupower
AgeCommit message (Collapse)Author
2012-10-03kbuild: Fix gcc -x syntaxJean Delvare
The correct syntax for gcc -x is "gcc -x assembler", not "gcc -xassembler". Even though the latter happens to work, the former is what is documented in the manual page and thus what gcc wrappers such as icecream do expect. This isn't a cosmetic change. The missing space prevents icecream from recognizing compilation tasks it can't handle, leading to silent kernel miscompilations. Besides me, credits go to Michael Matz and Dirk Mueller for investigating the miscompilation issue and tracking it down to this incorrect -x parameter syntax. Signed-off-by: Jean Delvare <jdelvare@suse.de> Acked-by: Ingo Molnar <mingo@kernel.org> Cc: stable@vger.kernel.org Cc: Bernhard Walle <bernhard@bwalle.de> Cc: Michal Marek <mmarek@suse.cz> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Michal Marek <mmarek@suse.cz>
2012-05-17sched: Remove stale power aware scheduling remnants and dysfunctional knobsPeter Zijlstra
It's been broken forever (i.e. it's not scheduling in a power aware fashion), as reported by Suresh and others sending patches, and nobody cares enough to fix it properly ... so remove it to make space free for something better. There's various problems with the code as it stands today, first and foremost the user interface which is bound to topology levels and has multiple values per level. This results in a state explosion which the administrator or distro needs to master and almost nobody does. Furthermore large configuration state spaces aren't good, it means the thing doesn't just work right because it's either under so many impossibe to meet constraints, or even if there's an achievable state workloads have to be aware of it precisely and can never meet it for dynamic workloads. So pushing this kind of decision to user-space was a bad idea even with a single knob - it's exponentially worse with knobs on every node of the topology. There is a proposal to replace the user interface with a single 3 state knob: sched_balance_policy := { performance, power, auto } where 'auto' would be the preferred default which looks at things like Battery/AC mode and possible cpufreq state or whatever the hw exposes to show us power use expectations - but there's been no progress on it in the past many months. Aside from that, the actual implementation of the various knobs is known to be broken. There have been sporadic attempts at fixing things but these always stop short of reaching a mergable state. Therefore this wholesale removal with the hopes of spurring people who care to come forward once again and work on a coherent replacement. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Vincent Guittot <vincent.guittot@linaro.org> Cc: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> Link: http://lkml.kernel.org/r/1326104915.2442.53.camel@twins Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-03-03cpupower tools: add install target to the debug tools' makefilesFranck Bui-Huu
Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2012-03-03cpupower tools: allow to build debug tools in a separate directory tooFranck Bui-Huu
Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2012-03-03cpupower: Fix broken mask valuesThomas Renninger
Signed-off-by: Thomas Renninger <trenn@suse.de> Tested-by: Dave Jones <davej@redhat.com> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2012-03-03cpupower tool: allow to build in a separate directoryFranck Bui-Huu
This patch allows cpupower tool to generate its output files in a seperate directory. This is now possible by passing the 'O=<path>' to the command line. This can be usefull for a normal user if the kernel source code is located in a read only location. This is patch stole some bits of the perf makefile. [linux@dominikbrodowski.net: fix commit message] Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2012-03-03cpupower tool: makefile: simplify the recipe used to generate cpupower.pot ↵Franck Bui-Huu
target Use the '-p' and '-o' switches to specify the pathname of the output file to xgettext(1). This avoids to move manually the output file if xgettext(1) succeeds. Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2012-03-03cpupower tool: remove use of undefined variables from the clean target of ↵Franck Bui-Huu
the top makefile UTIL_BINS and IDLE_OBJS variables are not defined at all, so there's no need to remove their content from the 'clean' target. Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2012-03-03cpupower: Fix linking with --as-neededOzan Çağlayan
Fix linking order to avoid undefined reference errors when using --as-needed linker flag. Signed-off-by: Ozan Çağlayan <ozan@pardus.org.tr> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2012-03-03cpupower: Remove unneeded code and by that fix a memleakThomas Renninger
Looks like some not needed debug code slipped in. Also this code: tmp = sysfs_get_idlestate_name(cpu, idlestates - 1); performs a strdup and the mem was not freed again. -> delete it. Signed-off-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2012-03-03cpupower: Fix number of idle statesThomas Renninger
The number of idle states was wrong. The POLL idle state (on X86) was missed out: Number of idle states: 4 Available idle states: C1-NHM C3-NHM C6-NHM While the POLL is not a real idle state, its statistics should still be shown. It's now also explained in a detailed manpage. This should fix a bug of missing the first idle state on other archs. Signed-off-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2012-03-03cpupower: Unify cpupower-frequency-* manpagesThomas Renninger
cpupower-frequency-* manpages slightly differed from the others. - Use uppercase letters in the title - Show cpupower Manual in the header - Remove Mattia from left down corner of the manpage, he is already listed as author - Remove --help, prints this message -> not needed Signed-off-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2012-03-03cpupower: Add cpupower-idle-info manpageThomas Renninger
The last missing manpage for cpupower tools. More info about other architecture's sleep state specialities would be great. Signed-off-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2012-03-03cpupower: AMD fam14h/Ontario monitor can also be used by fam12h cpusThomas Renninger
The name of the monitor is updated at runtime to the name of the CPU type. Signed-off-by: Thomas Renninger <trenn@suse.de> CC: Andreas Herrmann <herrmann.der.user@googlemail.com> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2012-03-03cpupower: Better interface for accessing AMD pci registersThomas Renninger
AMD's BKDG (Bios and Kernel Developers Guide) talks in the CPU spec of their CPU families about PCI registers defined by "device" (slot) and func(tion). Assuming that CPU specific configuration PCI devices are always on domain and bus zero a pci_slot_func_init() func which gets the slot and func of the desired PCI device passed looks like the most convenient way. This also obsoletes the PCI device id maintenance. Signed-off-by: Thomas Renninger <trenn@suse.de> CC: Andreas Herrmann <herrmann.der.user@googlemail.com> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2011-08-19cpupower: use man(1) when calling "cpupower help subcommand"Dominik Brodowski
Instead of printing something non-formatted to stdout, call man(1) to show the man page for the proper subcommand. Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2011-08-19cpupower: make NLS truly optionalDominik Brodowski
Loosely based on a patch for cpufrequtils, submittted by Sergey Dryabzhinsky <sergey.dryabzhinsky@gmail.com> and signed-off-by: Matt Turner <mattst88@gmail.com> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2011-08-19cpupower: fix Makefile typoDave Jones
Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2011-08-15cpupower: Make monitor command -c/--cpu awareThomas Renninger
This allows for example: cpupower -c 2-4,6 monitor -m Mperf |Mperf PKG |CORE|CPU | C0 | Cx | Freq 0| 8| 4| 2.42| 97.58| 1353 0| 16| 2| 14.38| 85.62| 1928 0| 24| 6| 1.76| 98.24| 1442 1| 16| 3| 15.53| 84.47| 1650 CPUs always get resorted for package, core then cpu id if it could get read out (or however you name these topology levels...). Still this is a nice way to keep the overview if a test binary is bound to a specific CPU or if one wants to show all CPUs inside a package or similar. Still missing: Do not measure not available cores to reduce the overhead and achieve better results. Signed-off-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2011-08-15cpupower: Better detect offlined CPUsThomas Renninger
Before, checking for offlined CPUs was done dirty and it was checked whether topology parsing returned -1 values. But this is a valid case on a Xen (and possibly other) kernels. Do proper online/offline checking, also take CONFIG_HOTPLUG_CPU option into account (no /sys/devices/../cpuX/online file). Signed-off-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2011-08-15cpupower: Do not show an empty Idle_Stats monitor if no idle driver is availableThomas Renninger
By taking error values of: sysfs_get_idlestate_count(..); into account. Signed-off-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2011-08-15cpupower: mperf monitor - Use TSC to calculate max frequency if possibleThomas Renninger
Which makes the implementation independent from cpufreq drivers. Therefore this would also work on a Xen kernel where the hypervisor is doing frequency switching and idle entering. Signed-off-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2011-08-15cpupower: avoid using symlinksAmerigo Wang
Reference the source directly, don't create symlinks. Signed-off-by: WANG Cong <amwang@redhat.com> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2011-07-29cpupower: Do detect IDA (opportunistic processor performance) via cpuidThomas Renninger
IA32-Intel Devel guide Volume 3A - 14.3.2.1 ------------------------------------------- ... Opportunistic processor performance operation can be disabled by setting bit 38 of IA32_MISC_ENABLES. This mechanism is intended for BIOS only. If IA32_MISC_ENABLES[38] is set, CPUID.06H:EAX[1] will return 0. Better detect things via cpuid, this cleans up the code a bit and the MSR parts were not working correctly anyway. Signed-off-by: Thomas Renninger <trenn@suse.de> CC: lenb@kernel.org CC: linux@dominikbrodowski.net CC: cpufreq@vger.kernel.org Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2011-07-29cpupower: Show Intel turbo ratio support via ./cpupower frequency-infoThomas Renninger
This adds the last piece missing from turbostat (if called with -v). It shows on Intel machines supporting Turbo Boost how many cores have to be active/idle to enter which boost mode (frequency). Whether the HW really enters these boost modes can be verified via ./cpupower monitor. Signed-off-by: Thomas Renninger <trenn@suse.de> CC: lenb@kernel.org CC: linux@dominikbrodowski.net CC: cpufreq@vger.kernel.org Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2011-07-29cpupowerutils: increase MAX_LINE_LENRoman Vasiyarov
larger sysfs data (>255 bytes) was truncated and thus used improperly [linux@dominikbrodowski.net: adapted to cpupowerutils] Signed-off-by: Roman Vasiyarov <rvasiyarov@gmail.com> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2011-07-29cpupower: Rename package from cpupowerutils to cpupowerThomas Renninger
Signed-off-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2011-07-29cpupowerutils: Rename: libcpufreq->libcpupowerThomas Renninger
[linux@dominikbrodowski.net: fix .gitignore] Signed-off-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2011-07-29cpupowerutils: use kernel version-derived version stringDominik Brodowski
As cpupowerutils is intended to be included into the kernel sources, use the kernel versioning instead of a custom version. The script utils/version-gen.sh is largely based on the script already found in tools/perf/util/PERF-VERSION-GEN . Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2011-07-29cpupowerutils: utils - ConfigStyle bugfixesDominik Brodowski
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2011-07-29cpupowerutils: helpers - ConfigStyle bugfixesDominik Brodowski
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2011-07-29cpupowerutils: idle_monitor - ConfigStyle bugfixesDominik Brodowski
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2011-07-29cpupowerutils: lib - ConfigStyle bugfixesDominik Brodowski
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2011-07-29cpupowerutils: bench - ConfigStyle bugfixesDominik Brodowski
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2011-07-29cpupowerutils: do not update po files on each and every compileDominik Brodowski
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2011-07-29cpupowerutils: remove ccdv, use kernel quiet/verbose mechanismDominik Brodowski
Use the quiet/verbose mechanism found in kernel tools, without relying on the special tool "ccdv" Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2011-07-29cpupowerutils: use COPYING, CREDITS from top-level directoryDominik Brodowski
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
2011-07-29cpupowerutils - cpufrequtils extended with quite some featuresDominik Brodowski
CPU power consumption vs performance tuning is no longer limited to CPU frequency switching anymore: deep sleep states, traditional dynamic frequency scaling and hidden turbo/boost frequencies are tied close together and depend on each other. The first two exist on different architectures like PPC, Itanium and ARM, the latter (so far) only on X86. On X86 the APU (CPU+GPU) will only run most efficiently if CPU and GPU has proper power management in place. Users and Developers want to have *one* tool to get an overview what their system supports and to monitor and debug CPU power management in detail. The tool should compile and work on as many architectures as possible. Once this tool stabilizes a bit, it is intended to replace the Intel-specific tools in tools/power/x86 Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>