linux-toradex.git/tools/power/cpupower, branch v4.4.35

Creating a common structure initialization pattern for struct option

2015-11-02T01:28:59+00:00

This patch tries to creates a common structure initialization
within the cpupower tool.

Previously the ``struct option`` was initialized
using `designated initializer` technique which was
not needed. There were conflicting initialization methods seen with

bench/main.c & others.

Signed-off-by: Sriram Raghunathan 
Signed-off-by: Thomas Renninger 
Signed-off-by: Rafael J. Wysocki

cpupower: Enable disabled Cstates if they are below max latency

2015-11-02T01:28:59+00:00

cpupower idle-set -D 
currently only disables all C-states that have a higher latency than the
specified . But if deep sleep states were already disabled and
have a lower latency, they should get enabled again.

For example:
This call:
cpupower idle-set -D 30
disables all C-states with a higher or equal latency than 30.
If one then calls:
cpupower idle-set -D 100
C-states with a latency between 30-99 will get enabled again with this patch
now. It is ensured that only C-states with a latency of 100 and higher are
disabled.

Signed-off-by: Thomas Renninger 
Signed-off-by: Rafael J. Wysocki

cpupower: Remove debug message when using cpupower idle-set -D switch

2015-11-02T01:28:59+00:00

Signed-off-by: Thomas Renninger 
Signed-off-by: Rafael J. Wysocki

cpupower: cpupower monitor reports uninitialized values for offline cpus

2015-11-02T01:28:59+00:00

[root@hp-dl980g7-02 linux]# cpupower monitor
...
5472|   0|   1|******|******|******|******|| 0.00|  0.00|  0.00|  0.00|  0.00 *is offline
10567|   0| 159|******|******|******|******||  0.00|  0.00|  0.00|  0.00|  0.00 *is offline
1661206560|859272560| 150|******|******|******|******|| 0.00|  0.00|  0.00|  0.00|  0.00 *is offline
1661206560|943093104| 140|******|******|******|******|| 0.00|  0.00|  0.00|  0.00|  0.00 *is offline

because of this cpupower also holds the incorrect value for the number
of physical packages in the machine

Changed cpupower to initialize the values of an offline cpu's socket and
core to -1, warn the user that one or more cpus is/are
offline and not print statistics for offline cpus.

This fix hides offlined cores where topology cannot be accessed.
With a recent kernel patch suggested from Prarit Bhargava it may be possible
that soft offlined cores' topology can still be parsed.
This patch would then show which cores in which package/socket are offline,
when sane toplogoy information is available.

Signed-off-by: Jacob Tanenbaum 
Signed-off-by: Thomas Renninger 
Signed-off-by: Rafael J. Wysocki

Merge tag 'pm+acpi-4.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

2015-09-02T02:45:46+00:00

Pull power management and ACPI updates from Rafael Wysocki:
"From the number of commits perspective, the biggest items are ACPICA
and cpufreq changes with the latter taking the lead (over 50 commits).

On the cpufreq front, there are many cleanups and minor fixes in the
core and governors, driver updates etc. We also have a new cpufreq
driver for Mediatek MT8173 chips.

ACPICA mostly updates its debug infrastructure and adds a number of
fixes and cleanups for a good measure.

The Operating Performance Points (OPP) framework is updated with new
DT bindings and support for them among other things.

We have a few updates of the generic power domains framework and a
reorganization of the ACPI device enumeration code and bus type
operations.

And a lot of fixes and cleanups all over.

Included is one branch from the MFD tree as it contains some
PM-related driver core and ACPI PM changes a few other commits are
based on.

Specifics:

- ACPICA update to upstream revision 20150818 including method
tracing extensions to allow more in-depth AML debugging in the
kernel and a number of assorted fixes and cleanups (Bob Moore, Lv
Zheng, Markus Elfring).

- ACPI sysfs code updates and a documentation update related to AML
method tracing (Lv Zheng).

- ACPI EC driver fix related to serialized evaluations of _Qxx
methods and ACPI tools updates allowing the EC userspace tool to be
built from the kernel source (Lv Zheng).

- ACPI processor driver updates preparing it for future introduction
of CPPC support and ACPI PCC mailbox driver updates (Ashwin
Chaugule).

- ACPI interrupts enumeration fix for a regression related to the
handling of IRQ attribute conflicts between MADT and the ACPI
namespace (Jiang Liu).

- Fixes related to ACPI device PM (Mika Westerberg, Srinidhi
Kasagar).

- ACPI device registration code reorganization to separate the
sysfs-related code and bus type operations from the rest (Rafael J
Wysocki).

- Assorted cleanups in the ACPI core (Jarkko Nikula, Mathias Krause,
Andy Shevchenko, Rafael J Wysocki, Nicolas Iooss).

- ACPI cpufreq driver and ia64 cpufreq driver fixes and cleanups (Pan
Xinhui, Rafael J Wysocki).

- cpufreq core cleanups on top of the previous changes allowing it to
preseve its sysfs directories over system suspend/resume (Viresh
Kumar, Rafael J Wysocki, Sebastian Andrzej Siewior).

- cpufreq fixes and cleanups related to governors (Viresh Kumar).

- cpufreq updates (core and the cpufreq-dt driver) related to the
turbo/boost mode support (Viresh Kumar, Bartlomiej Zolnierkiewicz).

- New DT bindings for Operating Performance Points (OPP), support for
them in the OPP framework and in the cpufreq-dt driver plus related
OPP framework fixes and cleanups (Viresh Kumar).

- cpufreq powernv driver updates (Shilpasri G Bhat).

- New cpufreq driver for Mediatek MT8173 (Pi-Cheng Chen).

- Assorted cpufreq driver (speedstep-lib, sfi, integrator) cleanups
and fixes (Abhilash Jindal, Andrzej Hajda, Cristian Ardelean).

- intel_pstate driver updates including Skylake-S support, support
for enabling HW P-states per CPU and an additional vendor bypass
list entry (Kristen Carlson Accardi, Chen Yu, Ethan Zhao).

- cpuidle core fixes related to the handling of coupled idle states
(Xunlei Pang).

- intel_idle driver updates including Skylake Client support and
support for freeze-mode-specific idle states (Len Brown).

- Driver core updates related to power management (Andy Shevchenko,
Rafael J Wysocki).

- Generic power domains framework fixes and cleanups (Jon Hunter,
Geert Uytterhoeven, Rajendra Nayak, Ulf Hansson).

- Device PM QoS framework update to allow the latency tolerance
setting to be exposed to user space via sysfs (Mika Westerberg).

- devfreq support for PPMUv2 in Exynos5433 and a fix for an incorrect
exynos-ppmu DT binding (Chanwoo Choi, Javier Martinez Canillas).

- System sleep support updates (Alan Stern, Len Brown, SungEun Kim).

- rockchip-io AVS support updates (Heiko Stuebner).

- PM core clocks support fixup (Colin Ian King).

- Power capping RAPL driver update including support for Skylake H/S
and Broadwell-H (Radivoje Jovanovic, Seiichi Ikarashi).

- Generic device properties framework fixes related to the handling
of static (driver-provided) property sets (Andy Shevchenko).

- turbostat and cpupower updates (Len Brown, Shilpasri G Bhat,
Shreyas B Prabhu)"

* tag 'pm+acpi-4.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (180 commits)
cpufreq: speedstep-lib: Use monotonic clock
cpufreq: powernv: Increase the verbosity of OCC console messages
cpufreq: sfi: use kmemdup rather than duplicating its implementation
cpufreq: drop !cpufreq_driver check from cpufreq_parse_governor()
cpufreq: rename cpufreq_real_policy as cpufreq_user_policy
cpufreq: remove redundant 'policy' field from user_policy
cpufreq: remove redundant 'governor' field from user_policy
cpufreq: update user_policy.* on success
cpufreq: use memcpy() to copy policy
cpufreq: remove redundant CPUFREQ_INCOMPATIBLE notifier event
cpufreq: mediatek: Add MT8173 cpufreq driver
dt-bindings: mediatek: Add MT8173 CPU DVFS clock bindings
PM / Domains: Fix typo in description of genpd_dev_pm_detach()
PM / Domains: Remove unusable governor dummies
PM / Domains: Make pm_genpd_init() available to modules
PM / domains: Align column headers and data in pm_genpd_summary output
powercap / RAPL: disable the 2nd power limit properly
tools: cpupower: Fix error when running cpupower monitor
PM / OPP: Drop unlikely before IS_ERR(_OR_NULL)
PM / OPP: Fix static checker warning (broken 64bit big endian systems)
...

tools: cpupower: Fix error when running cpupower monitor

2015-08-28T23:38:16+00:00

get_cpu_topology() tries to get topology info from all cpus by reading
files in the topology sysfs dir. If a cpu is offlined, since it doesn't
have topology dir, this function fails and returns -1. This causes
functions relying on get_cpu_topology() to fail. For example-

$ cpupower monitor
Cannot read number of available processors

Fix this by skipping fetching topology info for offline cpus.

Signed-off-by: Shreyas B. Prabhu 
Reported-by: Pavaman Subramaniyam 
Acked-by: Thomas Renninger 
Signed-off-by: Rafael J. Wysocki

cpupower: Do not change the frequency of offline cpu

2015-07-23T18:40:51+00:00

Check if the cpu is online before changing the frequency/governor of
the cpu.

Reported-by: Pavaman Subramaniyam 
Signed-off-by: Shilpasri G Bhat 
Reviewed-by: Gautham R. Shenoy 
Acked-by: Thomas Renninger 
Signed-off-by: Rafael J. Wysocki

x86/asm/tsc: Rename native_read_tsc() to rdtsc()

2015-07-06T13:23:28+00:00

Now that there is no paravirt TSC, the "native" is
inappropriate. The function does RDTSC, so give it the obvious
name: rdtsc().

Suggested-by: Borislav Petkov 
Signed-off-by: Andy Lutomirski 
Signed-off-by: Borislav Petkov 
Cc: Andy Lutomirski 
Cc: Borislav Petkov 
Cc: Brian Gerst 
Cc: Denys Vlasenko 
Cc: H. Peter Anvin 
Cc: Huang Rui 
Cc: John Stultz 
Cc: Len Brown 
Cc: Linus Torvalds 
Cc: Peter Zijlstra 
Cc: Ralf Baechle 
Cc: Thomas Gleixner 
Cc: kvm ML 
Link: http://lkml.kernel.org/r/fd43e16281991f096c1e4d21574d9e1402c62d39.1434501121.git.luto@kernel.org
[ Ported it to v4.2-rc1. ]
Signed-off-by: Ingo Molnar

x86/asm/tsc: Replace rdtscll() with native_read_tsc()

2015-07-06T13:23:26+00:00

Now that the ->read_tsc() paravirt hook is gone, rdtscll() is
just a wrapper around native_read_tsc(). Unwrap it.

Signed-off-by: Andy Lutomirski 
Signed-off-by: Borislav Petkov 
Cc: Andy Lutomirski 
Cc: Borislav Petkov 
Cc: Brian Gerst 
Cc: Denys Vlasenko 
Cc: H. Peter Anvin 
Cc: Huang Rui 
Cc: John Stultz 
Cc: Len Brown 
Cc: Linus Torvalds 
Cc: Peter Zijlstra 
Cc: Ralf Baechle 
Cc: Thomas Gleixner 
Cc: kvm ML 
Link: http://lkml.kernel.org/r/d2449ae62c1b1fb90195bcfb19ef4a35883a04dc.1434501121.git.luto@kernel.org
Signed-off-by: Ingo Molnar

cpupower: mperf monitor: fix output in MAX_FREQ_SYSFS mode

2015-05-30T00:21:31+00:00

There is clearly wrong output when mperf monitor runs in MAX_FREQ_SYSFS mode:
average frequency shows in kHz unit (despite the intended output to be in MHz),
and percentages for C state information are all wrong (including high/negative
values shown).

The problem is that the max_frequency read on initialization isn't used where it
should have been used on mperf_get_count_percent (to estimate the number of
ticks in the given time period), and the value we read from sysfs is in kHz, so
we must divide it to get the MHz value to use in current calculations.

While at it, also I fixed another small issues in the debug output of
max_frequency value in mperf_get_count_freq.

Signed-off-by: Herton R. Krzesinski 
Acked-by: Thomas Renninger 
Signed-off-by: Rafael J. Wysocki