linux/tools/power, branch v4.3

tools/power turbosat: update version number

2015-09-26T13:49:55Z

Signed-off-by: Len Brown

tools/power turbostat: SKL: Adjust for TSC difference from base frequency

2015-09-26T04:50:54Z

On a Skylake with 1500MHz base frequency, the TSC runs at 1512MHz. This is because the TSC is no longer in the n*100 MHz BCLK domain, but is now in the m*24MHz crystal clock domain. (24 MHz * 63 = 1512 MHz) This adds error to several calculations in turbostat, unless the TSC sample sizes are adjusted for this difference. Note that calculations in the time domain are immune from this issue, as the timing sub-system has already calibrated the TSC against a known wall clock. AVG_MHz = APERF_delta/measurement_interval need no adjustment. APERF_delta is in the BCLK domain, and measurement_interval is in the time domain. TSC_MHz = TSC_delta/measurement_interval needs no adjustment -- as we really do want to report the actual measured TSC delta here, and measurement_interval is in the accurate time domain. %Busy = MPERF_delta/TSC_delta needs adjustment to use TSC_BCLK_DOMAIN_delta. TSC_BCLK_DOMAIN_delta = TSC_delta * base_hz / tsc_hz Bzy_MHz = TSC_delta/APERF_delta/MPERF_delta/measurement_interval need adjustment as above. No other metrics in turbostat need to be adjusted. Before: CPU Avg_MHz %Busy Bzy_MHz TSC_MHz - 550 24.84 2216 1512 0 2191 98.73 2219 1514 2 0 0.01 2130 1512 1 9 0.43 2016 1512 3 2 0.08 2016 1512 After: CPU Avg_MHz %Busy Bzy_MHz TSC_MHz - 550 25.05 2198 1512 0 2190 99.62 2199 1512 2 0 0.01 2152 1512 1 9 0.46 2000 1512 3 2 0.10 2000 1512 Note that in this example, the "Before" Bzy_MHz was reported as exceeding the 2200 max turbo rate. Also, even a pinned spin loop would not be reported as over 99% busy. Signed-off-by: Len Brown

tools/power turbostat: KNL workaround for %Busy and Avg_MHz

2015-09-26T04:50:54Z

KNL increments APERF and MPERF every 1024 clocks. This is compliant with the architecture specification, which requires that only the ratio of APERF/MPERF need be valid. However, turbostat takes advantage of the fact that these two MSRs increment every un-halted clock at the actual and base frequency: AVG_MHz = APERF_delta/measurement_interval %Busy = MPERF_delta/TSC_delta This quirk is needed for these calculations to also work on KNL, which would otherwise show a value 1024x smaller than expected. Signed-off-by: Hubert Chrzaniuk Signed-off-by: Len Brown

tools/power turbostat: IVB Xeon: fix --debug regression

2015-09-26T04:50:48Z

Staring in Linux-4.3-rc1, commit 6fb3143b561c ("tools/power turbostat: dump CONFIG_TDP") touches MSR 0x648, which is not supported on IVB-Xeon. This results in "turbostat --debug" exiting on those systems: turbostat: /dev/cpu/2/msr offset 0x648 read failed: Input/output error Remove IVB-Xeon from the list of machines supporting with that MSR. Signed-off-by: Len Brown

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

2015-09-02T02:45:46Z

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) ...

Merge branches 'pm-tools' and 'powercap'

2015-09-01T13:54:30Z

* pm-tools: tools: cpupower: Fix error when running cpupower monitor tools/power turbostat: fix typo on DRAM column in Joules-mode cpupower: Do not change the frequency of offline cpu tools/power turbostat: fix parameter passing for forked command tools/power turbostat: dump CONFIG_TDP tools/power turbostat: cpu0 is no longer hard-coded, so update output tools/power turbostat: update turbostat(8) * powercap: powercap / RAPL: disable the 2nd power limit properly powercap / RAPL: Add support for Broadwell-H powercap / RAPL: Add support for Skylake H/S

tools: cpupower: Fix error when running cpupower monitor

2015-08-28T23:38:16Z

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

Merge branch 'turbostat' of https://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux into pm-tools

2015-08-24T21:10:02Z

Pull turbostat changes for v4.3 from Len Brown. * 'turbostat' of https://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux: tools/power turbostat: fix typo on DRAM column in Joules-mode tools/power turbostat: fix parameter passing for forked command tools/power turbostat: dump CONFIG_TDP tools/power turbostat: cpu0 is no longer hard-coded, so update output tools/power turbostat: update turbostat(8)

tools/power/acpi: Enable build for EC userspace tool

2015-07-31T21:39:31Z

This patch allows EC userspace tool to be built as an ACPI tool. Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki

tools/power/acpi: Add descend support in ACPI tools Makefile

2015-07-31T21:39:31Z

This patch splits tools/power/acpi/Makefile to support descend compling for ACPI tools. In this patch tools/ec related stuff is removed as it is originally not enabled. Also a missing .o (utnonansi.o) is added to the acpidump/Makefile. Signed-off-by: Lv Zheng Signed-off-by: Rafael J. Wysocki