19 Jan, 2012
1 commit
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This includes initial support for the recently published ACPI 5.0 spec.
In particular, support for the "hardware-reduced" bit that eliminates
the dependency on legacy hardware.APEI has patches resulting from testing on real hardware.
Plus other random fixes.
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux: (52 commits)
acpi/apei/einj: Add extensions to EINJ from rev 5.0 of acpi spec
intel_idle: Split up and provide per CPU initialization func
ACPI processor: Remove unneeded variable passed by acpi_processor_hotadd_init V2
ACPI processor: Remove unneeded cpuidle_unregister_driver call
intel idle: Make idle driver more robust
intel_idle: Fix a cast to pointer from integer of different size warning in intel_idle
ACPI: kernel-parameters.txt : Add intel_idle.max_cstate
intel_idle: remove redundant local_irq_disable() call
ACPI processor: Fix error path, also remove sysdev link
ACPI: processor: fix acpi_get_cpuid for UP processor
intel_idle: fix API misuse
ACPI APEI: Convert atomicio routines
ACPI: Export interfaces for ioremapping/iounmapping ACPI registers
ACPI: Fix possible alignment issues with GAS 'address' references
ACPI, ia64: Use SRAT table rev to use 8bit or 16/32bit PXM fields (ia64)
ACPI, x86: Use SRAT table rev to use 8bit or 32bit PXM fields (x86/x86-64)
ACPI: Store SRAT table revision
ACPI, APEI, Resolve false conflict between ACPI NVS and APEI
ACPI, Record ACPI NVS regions
ACPI, APEI, EINJ, Refine the fix of resource conflict
...
18 Jan, 2012
1 commit
15 Dec, 2011
1 commit
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Field names were shortened: "pkg" is now "pk", "core" is now "cr"
Signed-off-by: Arun Thomas
Signed-off-by: Jiri Kosina
18 Nov, 2011
1 commit
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Signed-off-by: Len Brown
07 Nov, 2011
1 commit
19 Aug, 2011
3 commits
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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
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Loosely based on a patch for cpufrequtils, submittted by
Sergey Dryabzhinsky andsigned-off-by: Matt Turner
Signed-off-by: Dominik Brodowski -
Signed-off-by: Dave Jones
Signed-off-by: Dominik Brodowski
16 Aug, 2011
5 commits
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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| 1650CPUs 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
Signed-off-by: Dominik Brodowski -
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
Signed-off-by: Dominik Brodowski -
By taking error values of:
sysfs_get_idlestate_count(..);
into account.Signed-off-by: Thomas Renninger
Signed-off-by: Dominik Brodowski -
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
Signed-off-by: Dominik Brodowski -
Reference the source directly, don't create symlinks.
Signed-off-by: WANG Cong
Signed-off-by: Dominik Brodowski
03 Aug, 2011
2 commits
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* 'tools-release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-idle-2.6:
tools/power turbostat: fit output into 80 columns on snb-ep
tools/power x86_energy_perf_policy: fix print of uninitialized string -
Reduce columns for package number to 1.
If you can afford more than 9 packages,
you can also afford a terminal with more than 80 columns:-)Also shave a column also off the package C-states
Signed-off-by: Len Brown
30 Jul, 2011
15 commits
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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
CC: lenb@kernel.org
CC: linux@dominikbrodowski.net
CC: cpufreq@vger.kernel.org
Signed-off-by: Dominik Brodowski -
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
CC: lenb@kernel.org
CC: linux@dominikbrodowski.net
CC: cpufreq@vger.kernel.org
Signed-off-by: Dominik Brodowski -
larger sysfs data (>255 bytes) was truncated and thus used improperly
[linux@dominikbrodowski.net: adapted to cpupowerutils]
Signed-off-by: Roman Vasiyarov
Signed-off-by: Dominik Brodowski -
Signed-off-by: Thomas Renninger
Signed-off-by: Dominik Brodowski -
[linux@dominikbrodowski.net: fix .gitignore]
Signed-off-by: Thomas Renninger
Signed-off-by: Dominik 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
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Signed-off-by: Dominik Brodowski
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Signed-off-by: Dominik Brodowski
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Signed-off-by: Dominik Brodowski
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Signed-off-by: Dominik Brodowski
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Signed-off-by: Dominik Brodowski
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Signed-off-by: Dominik Brodowski
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Use the quiet/verbose mechanism found in kernel tools, without
relying on the special tool "ccdv"Signed-off-by: Dominik Brodowski
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Signed-off-by: Dominik Brodowski
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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/x86Signed-off-by: Dominik Brodowski
16 Jul, 2011
1 commit
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Looks like I was going to stick the brand string
in the verbose ouput, but didn't get around to it.Signed-off-by: Len Brown
04 Jul, 2011
1 commit
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dump only the counters which are active
Signed-off-by: Len Brown
26 Apr, 2011
1 commit
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Fast-forwarded to current state of Linus' tree as there are patches to be
applied for files that didn't exist on the old branch.
10 Apr, 2011
1 commit
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Signed-off-by: Justin P. Mattock
Signed-off-by: Jiri Kosina
31 Mar, 2011
1 commit
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Fixes generated by 'codespell' and manually reviewed.
Signed-off-by: Lucas De Marchi
11 Feb, 2011
2 commits
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Follow kernel coding style traditions more closely.
Delete typedef, re-name "per cpu counters" to
simply be counters etc.This patch changes no functionality.
Suggested-by: Thiago Farina
Signed-off-by: Len Brown -
bug could cause false positive on indicating
presence of invarient TSC or APERF support.Signed-off-by: Thomas Renninger
Signed-off-by: Len Brown
12 Jan, 2011
3 commits
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MSR_IA32_ENERGY_PERF_BIAS first became available on Westmere Xeon.
It is implemented in all Sandy Bridge processors -- mobile, desktop and server.
It is expected to become increasingly important in subsequent generations.x86_energy_perf_policy is a user-space utility to set the
hardware energy vs performance policy hint in the processor.
Most systems would benefit from "x86_energy_perf_policy normal"
at system startup, as the hardware default is maximum performance
at the expense of energy efficiency.See x86_energy_perf_policy.8 man page for more information.
Background:
Linux-2.6.36 added "epb" to /proc/cpuinfo to indicate
if an x86 processor supports MSR_IA32_ENERGY_PERF_BIAS,
without actually modifying the MSR.In March, 2010, Venkatesh Pallipadi proposed a small driver
that programmed MSR_IA32_ENERGY_PERF_BIAS, based on
the cpufreq governor in use. It also offered
a boot-time cmdline option to override.
http://lkml.org/lkml/2010/3/4/457
But hiding the hardware policy behind the
governor choice was deemed "kinda icky".In June, 2010, I proposed a generic user/kernel API to
generalize the power/performance policy trade-off.
"RFC: /sys/power/policy_preference"
http://lkml.org/lkml/2010/6/16/399
That is my preference for implementing this capability,
but I received no support on the list.So in September, 2010, I sent x86_energy_perf_policy.c to LKML,
a user-space utility that scribbles directly to the MSR.
http://lkml.org/lkml/2010/9/28/246Here is that same utility, after responding to some review feedback,
to live in tools/power/, where it is easily found.Signed-off-by: Len Brown
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turbostat is a Linux tool to observe proper operation
of Intel(R) Turbo Boost Technology.turbostat displays the actual processor frequency
on x86 processors that include APERF and MPERF MSRs.Note that turbostat is of limited utility on Linux
kernels 2.6.29 and older, as acpi_cpufreq cleared
APERF/MPERF up through that release.On Intel Core i3/i5/i7 (Nehalem) and newer processors,
turbostat also displays residency in idle power saving states,
which are necessary for diagnosing any cpuidle issues
that may have an effect on turbo-mode.See the turbostat.8 man page for example usage.
Signed-off-by: Len Brown