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* Merge tag 'acpi-4.8-rc1' of ↵Linus Torvalds2016-07-261-3/+4
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull ACPI updates from Rafael Wysocki: "The new feaures here are the support for ACPI overlays (allowing ACPI tables to be loaded at any time from EFI variables or via configfs) and the LPI (Low-Power Idle) support. Also notable is the ACPI-based NUMA support for ARM64. Apart from that we have two new drivers, for the DPTF (Dynamic Power and Thermal Framework) power participant device and for the Intel Broxton WhiskeyCove PMIC, some more PMIC-related changes, support for the Boot Error Record Table (BERT) in APEI and support for platform-initiated graceful shutdown. Plus two new pieces of documentation and usual assorted fixes and cleanups in quite a few places. Specifics: - Support for ACPI SSDT overlays allowing Secondary System Description Tables (SSDTs) to be loaded at any time from EFI variables or via configfs (Octavian Purdila, Mika Westerberg). - Support for the ACPI LPI (Low-Power Idle) feature introduced in ACPI 6.0 and allowing processor idle states to be represented in ACPI tables in a hierarchical way (with the help of Processor Container objects) and support for ACPI idle states management on ARM64, based on LPI (Sudeep Holla). - General improvements of ACPI support for NUMA and ARM64 support for ACPI-based NUMA (Hanjun Guo, David Daney, Robert Richter). - General improvements of the ACPI table upgrade mechanism and ARM64 support for that feature (Aleksey Makarov, Jon Masters). - Support for the Boot Error Record Table (BERT) in APEI and improvements of kernel messages printed by the error injection code (Huang Ying, Borislav Petkov). - New driver for the Intel Broxton WhiskeyCove PMIC operation region and support for the REGS operation region on Broxton, PMIC code cleanups (Bin Gao, Felipe Balbi, Paul Gortmaker). - New driver for the power participant device which is part of the Dynamic Power and Thermal Framework (DPTF) and DPTF-related code reorganization (Srinivas Pandruvada). - Support for the platform-initiated graceful shutdown feature introduced in ACPI 6.1 (Prashanth Prakash). - ACPI button driver update related to lid input events generated automatically on initialization and system resume that have been problematic for some time (Lv Zheng). - ACPI EC driver cleanups (Lv Zheng). - Documentation of the ACPICA release automation process and the in-kernel ACPI AML debugger (Lv Zheng). - New blacklist entry and two fixes for the ACPI backlight driver (Alex Hung, Arvind Yadav, Ralf Gerbig). - Cleanups of the ACPI pci_slot driver (Joe Perches, Paul Gortmaker). - ACPI CPPC code changes to make it more robust against possible defects in ACPI tables and new symbol definitions for PCC (Hoan Tran). - System reboot code modification to execute the ACPI _PTS (Prepare To Sleep) method in addition to _TTS (Ocean He). - ACPICA-related change to carry out lock ordering checks in ACPICA if ACPICA debug is enabled in the kernel (Lv Zheng). - Assorted minor fixes and cleanups (Andy Shevchenko, Baoquan He, Bhaktipriya Shridhar, Paul Gortmaker, Rafael Wysocki)" * tag 'acpi-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (71 commits) ACPI: enable ACPI_PROCESSOR_IDLE on ARM64 arm64: add support for ACPI Low Power Idle(LPI) drivers: firmware: psci: initialise idle states using ACPI LPI cpuidle: introduce CPU_PM_CPU_IDLE_ENTER macro for ARM{32, 64} arm64: cpuidle: drop __init section marker to arm_cpuidle_init ACPI / processor_idle: Add support for Low Power Idle(LPI) states ACPI / processor_idle: introduce ACPI_PROCESSOR_CSTATE ACPI / DPTF: move int340x_thermal.c to the DPTF folder ACPI / DPTF: Add DPTF power participant driver ACPI / lpat: make it explicitly non-modular ACPI / dock: make dock explicitly non-modular ACPI / PCI: make pci_slot explicitly non-modular ACPI / PMIC: remove modular references from non-modular code ACPICA: Linux: Enable ACPI_MUTEX_DEBUG for Linux kernel ACPI: Rename configfs.c to acpi_configfs.c to prevent link error ACPI / debugger: Add AML debugger documentation ACPI: Add documentation describing ACPICA release automation ACPI: add support for loading SSDTs via configfs ACPI: add support for configfs efi / ACPI: load SSTDs from EFI variables ...
| * tools/acpi: use CROSS_COMPILE to define prefixAndy Shevchenko2016-06-231-3/+4
| | | | | | | | | | | | | | | | CROSS_COMPILE can be considered as standard definition for toolchain prefix when cross-compiling. Use it here. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | tools/power turbostat: Replace MSR_NHM_TURBO_RATIO_LIMITSrinivas Pandruvada2016-07-072-2/+2
| | | | | | | | | | | | | | | | Replace MSR_NHM_TURBO_RATIO_LIMIT with MSR_TURBO_RATIO_LIMIT. Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | tools/turbostat: allow user to alter DESTDIR and PREFIXAndy Shevchenko2016-06-281-2/+2
|/ | | | | | | | | | | | When run make -C tools DESTDIR=/my/nice/dir turbostat_install get a message install: cannot create regular file '/usr/bin/turbostat': Permission denied Allow user to alter DESTDIR and PREFIX variables. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* Merge tag 'acpi-4.7-rc1' of ↵Linus Torvalds2016-05-167-43/+51
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull ACPI updates from Rafael Wysocki: "The new features here are ACPI 6.1 support (and some previously missing bits of ACPI 6.0 support) in ACPICA and two new drivers, a driver for the ACPI Generic Event Device (GED) feature introduced by ACPI 6.1 and the INT3406 thermal driver for display thermal management. Also the value returned by the _HRV (hardware revision) ACPI object will be exported to user space via sysfs now. In addition to that, ACPI on ARM64 will not depend on EXPERT any more. The rest is mostly fixes and cleanups and some code reorganization. Specifics: - In-kernel ACPICA code update to the upstream release 20160422 adding support for ACPI 6.1 along with some previously missing bits of ACPI 6.0 support, making a fair amount of fixes and cleanups and reducing divergences between the upstream ACPICA and the in-kernel code (Bob Moore, Lv Zheng, Al Stone, Aleksey Makarov, Will Miles) - ACPI Generic Event Device (GED) support and a fix for it (Sinan Kaya, Paul Gortmaker) - INT3406 thermal driver for display thermal management and ACPI backlight support code reorganization related to it (Aaron Lu, Arnd Bergmann) - Support for exporting the value returned by the _HRV (hardware revision) ACPI object via sysfs (Betty Dall) - Removal of the EXPERT dependency for ACPI on ARM64 (Mark Brown) - Rework of the handling of ACPI _OSI mechanism allowing the _OSI("Darwin") support to be overridden from the kernel command line among other things (Lv Zheng, Chen Yu) - Rework of the ACPI tables override mechanism to prepare it for the introduction of overlays support going forward (Lv Zheng, Rafael Wysocki) - Fixes related to the ECDT support and module-level execution of AML (Lv Zheng) - ACPI PCI interrupts management update to make it work better on ARM64 mostly (Sinan Kaya) - ACPI SRAT handling update to make the code process all entires in the table order regardless of the entry type (Lukasz Anaczkowski) - EFI power off support for full-hardware ACPI platforms that don't support ACPI S5 (Chen Yu) - Fixes and cleanups related to the ACPI core's sysfs interface (Dan Carpenter, Betty Dall) - acpi_dev_present() API rework to reduce possible confusion related to it (Lukas Wunner) - Removal of CLK_IS_ROOT from two ACPI drivers (Stephen Boyd)" * tag 'acpi-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (82 commits) ACPI / video: mark acpi_video_get_levels() inline Thermal / ACPI / video: add INT3406 thermal driver ACPI / GED: make evged.c explicitly non-modular ACPI / tables: Fix DSDT override mechanism ACPI / sysfs: fix error code in get_status() ACPICA: Update version to 20160422 ACPICA: Move all ASCII utilities to a common file ACPICA: ACPI 2.0, Hardware: Add access_width/bit_offset support for acpi_hw_write() ACPICA: ACPI 2.0, Hardware: Add access_width/bit_offset support in acpi_hw_read() ACPICA: Executer: Introduce a set of macros to handle bit width mask generation ACPICA: Hardware: Add optimized access bit width support ACPICA: Utilities: Add ACPI_IS_ALIGNED() macro ACPICA: Renamed some #defined flag constants for clarity ACPICA: ACPI 6.0, tools/iasl: Add support for new resource descriptors ACPICA: ACPI 6.0: Update _BIX support for new package element ACPICA: ACPI 6.1: Support for new PCCT subtable ACPICA: Refactor evaluate_object to reduce nesting ACPICA: Divergence: remove unwanted spaces for typedef ACPI,PCI,IRQ: remove SCI penalize function ACPI,PCI,IRQ: remove redundant code in acpi_irq_penalty_init() ..
| *---. Merge branches 'acpi-pci', 'acpi-misc' and 'acpi-tools'Rafael J. Wysocki2016-05-161-2/+2
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * acpi-pci: ACPI,PCI,IRQ: remove SCI penalize function ACPI,PCI,IRQ: remove redundant code in acpi_irq_penalty_init() ACPI,PCI,IRQ: reduce static IRQ array size to 16 ACPI,PCI,IRQ: reduce resource requirements * acpi-misc: ACPI / sysfs: fix error code in get_status() ACPI / device_sysfs: Clean up checkpatch errors ACPI / device_sysfs: Change _SUN and _STA show functions error return to EIO ACPI / device_sysfs: Add sysfs support for _HRV hardware revision arm64: defconfig: Enable ACPI ACPI / ARM64: Remove EXPERT dependency for ACPI on ARM64 ACPI / ARM64: Don't enable ACPI by default on ARM64 acer-wmi: Use acpi_dev_found() eeepc-wmi: Use acpi_dev_found() ACPI / utils: Rename acpi_dev_present() * acpi-tools: tools/power/acpi: close file only if it is open
| | | | * tools/power/acpi: close file only if it is openLv Zheng2016-04-091-2/+2
| | | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The logic on the test for a valid fd to close is incorrect. This was just a mistake and was pointed out by Colin Ian King. Link: https://patchwork.kernel.org/patch/8620201/ Original-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| * | | Merge back new ACPICA material for v4.7.Rafael J. Wysocki2016-05-066-41/+49
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| | * | ACPICA: Move all ASCII utilities to a common fileBob Moore2016-05-052-1/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ACPICA commit ba60e4500053010bf775d58f6f61febbdb94d817 New file is utascii.c Link: https://github.com/acpica/acpica/commit/ba60e450 Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| | * | ACPICA: Divergence: remove unwanted spaces for typedefLv Zheng2016-05-053-37/+36
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ACPICA commit b2294cae776f5a66a7697414b21949d307e6856f This patch removes unwanted spaces for typedef. This solution doesn't cover function types. Note that the linuxize result of this commit is very giant and should have many conflicts against the current Linux upstream. Thus it is required to modify the linuxize result of this commit and the commits around it manually in order to have them merged to the Linux upstream. Since this is very costy, we should do this only once, and if we can't ensure to do this only once, we need to revert the Linux code to the wrong indentation result before merging the linuxize result of this commit. Lv Zheng. Link: https://github.com/acpica/acpica/commit/b2294cae Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| | * | ACPICA: Utilities: Update for strtoul64 mergerBob Moore2016-04-052-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ACPICA commit 795e136d2ac77c1c8b091fba019b5fe36a44a323 Fixes a problem with the merger of the two internal versions of this function. Make the maximum integer width (32-bit or 64-bit) a parameter to the function so that it no longer exclusively uses the integer width specified in the DSDT/SSDT. ACPICA BZ 1260 Link: https://github.com/acpica/acpica/commit/795e136d Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| | * | ACPICA: Add support for QNX 6.6 platformWill Miles2016-04-051-1/+1
| | |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | ACPICA commit 37a1dec2391272251e59948c16c60713183ae78f Link: https://github.com/acpica/acpica/commit/37a1dec2 Signed-off-by: Will Miles <wmiles@sgl.com> Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Lv Zheng <lv.zheng@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | | cpupower: fix potential memory leakArjun Sreedharan2016-05-051-3/+5
| | | | | | | | | | | | | | | Signed-off-by: Thomas Renninger <trenn@suse.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | | cpupower: Add cpuidle parts into libraryThomas Renninger2016-04-2817-931/+1242
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This more or less is a renaming and moving of functions and should not introduce any functional change. cpupower was built from cpufrequtils (which had a C library providing easy access to cpu frequency platform info). In the meantime it got enhanced by quite some neat cpuidle userspace tools. Now the cpu idle functions have been separated and added to the cpupower.so library. So beside an already existing public header file: cpufreq.h cpupower now also exports these cpu idle functions in: cpuidle.h Here again pasted for better review of the interfaces: ====================================== int cpuidle_is_state_disabled(unsigned int cpu, unsigned int idlestate); int cpuidle_state_disable(unsigned int cpu, unsigned int idlestate, unsigned int disable); unsigned long cpuidle_state_latency(unsigned int cpu, unsigned int idlestate); unsigned long cpuidle_state_usage(unsigned int cpu, unsigned int idlestate); unsigned long long cpuidle_state_time(unsigned int cpu, unsigned int idlestate); char *cpuidle_state_name(unsigned int cpu, unsigned int idlestate); char *cpuidle_state_desc(unsigned int cpu, unsigned int idlestate); unsigned int cpuidle_state_count(unsigned int cpu); char *cpuidle_get_governor(void); char *cpuidle_get_driver(void); ====================================== Signed-off-by: Thomas Renninger <trenn@suse.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | | cpupowerutils: bench: trivial fix of spelling mistake on "average"Colin Ian King2016-04-282-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | fix spelling mistake, avarage -> average Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Thomas Renninger <trenn@suse.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | | Fix cpupower manpages "NAME" sectionMattia Dongili2016-04-284-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | The token before "-" should be the program name, no spaces allowed. See man(7) and lexgrog(1). Signed-off-by: Mattia Dongili <malattia@linux.it> Signed-off-by: Thomas Renninger <trenn@suse.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | | cpupower: bench: parse.c: fix several resource leaksColin Ian King2016-04-281-3/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The error handling in prepare_output has several issues with resource leaks. Ensure that filename is free'd and the directory stream DIR is closed before returning. Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Thomas Renninger <trenn@suse.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | | Honour user's LDFLAGSMattia Dongili2016-04-281-1/+1
|/ / | | | | | | | | | | Signed-off-by: Mattia Dongili <malattia@linux.it> Signed-off-by: Thomas Renninger <trenn@suse.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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*-. \ Merge branches 'pm-core', 'powercap' and 'pm-tools'Rafael J. Wysocki2016-04-081-10/+107
|\ \ \ | |_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * pm-core: PM / wakeirq: fix wakeirq setting after wakup re-configuration from sysfs PM / runtime: Document steps for device removal * powercap: powercap: intel_rapl: Add missing Haswell model * pm-tools: tools/power turbostat: work around RC6 counter wrap tools/power turbostat: initial KBL support tools/power turbostat: initial SKX support tools/power turbostat: decode BXT TSC frequency via CPUID tools/power turbostat: initial BXT support tools/power turbostat: print IRTL MSRs tools/power turbostat: SGX state should print only if --debug
| | * tools/power turbostat: work around RC6 counter wrapLen Brown2016-04-071-4/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Sometimes the rc6 sysfs counter spontaneously resets, causing turbostat prints a very large number as it tries to calcuate % = 100 * (old - new) / interval When we see (old > new), print ***.**% instead of a bogus huge number. Note that this detection is not fool-proof, as the counter could reset several times and still result in new > old. Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| | * tools/power turbostat: initial KBL supportLen Brown2016-04-071-0/+14
| | | | | | | | | | | | | | | | | | | | | KBL is similar to SKL Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| | * tools/power turbostat: initial SKX supportLen Brown2016-04-071-1/+8
| | | | | | | | | | | | | | | | | | | | | SKX has a lot in common with HSX Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| | * tools/power turbostat: decode BXT TSC frequency via CPUIDLen Brown2016-04-071-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Hard-code BXT ART to 19200MHz, so turbostat --debug can fully enumerate TSC: CPUID(0x15): eax_crystal: 3 ebx_tsc: 186 ecx_crystal_hz: 0 TSC: 1190 MHz (19200000 Hz * 186 / 3 / 1000000) Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| | * tools/power turbostat: initial BXT supportLen Brown2016-04-071-0/+9
| | | | | | | | | | | | | | | | | | | | | Broxton has a lot in common with SKL Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| | * tools/power turbostat: print IRTL MSRsLen Brown2016-04-071-3/+56
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some processors use the Interrupt Response Time Limit (IRTL) MSR value to describe the maximum IRQ response time latency for deep package C-states. (Though others have the register, but do not use it) Lets print it out to give insight into the cases where it is used. IRTL begain in SNB, with PC3/PC6/PC7, and HSW added PC8/PC9/PC10. Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
| | * tools/power turbostat: SGX state should print only if --debugLen Brown2016-04-071-1/+1
| | | | | | | | | | | | | | | | | | | | | The CPUID.SGX bit was printed, even if --debug was used Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
* | | Merge tag 'pm+acpi-4.6-rc1-1' of ↵Linus Torvalds2016-03-162-193/+720
|\ \ \ | | |/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management and ACPI updates from Rafael Wysocki: "This time the majority of changes go into cpufreq and they are significant. First off, the way CPU frequency updates are triggered is different now. Instead of having to set up and manage a deferrable timer for each CPU in the system to evaluate and possibly change its frequency periodically, cpufreq governors set up callbacks to be invoked by the scheduler on a regular basis (basically on utilization updates). The "old" governors, "ondemand" and "conservative", still do all of their work in process context (although that is triggered by the scheduler now), but intel_pstate does it all in the callback invoked by the scheduler with no need for any additional asynchronous processing. Of course, this eliminates the overhead related to the management of all those timers, but also it allows the cpufreq governor code to be simplified quite a bit. On top of that, the common code and data structures used by the "ondemand" and "conservative" governors are cleaned up and made more straightforward and some long-standing and quite annoying problems are addressed. In particular, the handling of governor sysfs attributes is modified and the related locking becomes more fine grained which allows some concurrency problems to be avoided (particularly deadlocks with the core cpufreq code). In principle, the new mechanism for triggering frequency updates allows utilization information to be passed from the scheduler to cpufreq. Although the current code doesn't make use of it, in the works is a new cpufreq governor that will make decisions based on the scheduler's utilization data. That should allow the scheduler and cpufreq to work more closely together in the long run. In addition to the core and governor changes, cpufreq drivers are updated too. Fixes and optimizations go into intel_pstate, the cpufreq-dt driver is updated on top of some modification in the Operating Performance Points (OPP) framework and there are fixes and other updates in the powernv cpufreq driver. Apart from the cpufreq updates there is some new ACPICA material, including a fix for a problem introduced by previous ACPICA updates, and some less significant changes in the ACPI code, like CPPC code optimizations, ACPI processor driver cleanups and support for loading ACPI tables from initrd. Also updated are the generic power domains framework, the Intel RAPL power capping driver and the turbostat utility and we have a bunch of traditional assorted fixes and cleanups. Specifics: - Redesign of cpufreq governors and the intel_pstate driver to make them use callbacks invoked by the scheduler to trigger CPU frequency evaluation instead of using per-CPU deferrable timers for that purpose (Rafael Wysocki). - Reorganization and cleanup of cpufreq governor code to make it more straightforward and fix some concurrency problems in it (Rafael Wysocki, Viresh Kumar). - Cleanup and improvements of locking in the cpufreq core (Viresh Kumar). - Assorted cleanups in the cpufreq core (Rafael Wysocki, Viresh Kumar, Eric Biggers). - intel_pstate driver updates including fixes, optimizations and a modification to make it enable enable hardware-coordinated P-state selection (HWP) by default if supported by the processor (Philippe Longepe, Srinivas Pandruvada, Rafael Wysocki, Viresh Kumar, Felipe Franciosi). - Operating Performance Points (OPP) framework updates to improve its handling of voltage regulators and device clocks and updates of the cpufreq-dt driver on top of that (Viresh Kumar, Jon Hunter). - Updates of the powernv cpufreq driver to fix initialization and cleanup problems in it and correct its worker thread handling with respect to CPU offline, new powernv_throttle tracepoint (Shilpasri Bhat). - ACPI cpufreq driver optimization and cleanup (Rafael Wysocki). - ACPICA updates including one fix for a regression introduced by previos changes in the ACPICA code (Bob Moore, Lv Zheng, David Box, Colin Ian King). - Support for installing ACPI tables from initrd (Lv Zheng). - Optimizations of the ACPI CPPC code (Prashanth Prakash, Ashwin Chaugule). - Support for _HID(ACPI0010) devices (ACPI processor containers) and ACPI processor driver cleanups (Sudeep Holla). - Support for ACPI-based enumeration of the AMBA bus (Graeme Gregory, Aleksey Makarov). - Modification of the ACPI PCI IRQ management code to make it treat 255 in the Interrupt Line register as "not connected" on x86 (as per the specification) and avoid attempts to use that value as a valid interrupt vector (Chen Fan). - ACPI APEI fixes related to resource leaks (Josh Hunt). - Removal of modularity from a few ACPI drivers (BGRT, GHES, intel_pmic_crc) that cannot be built as modules in practice (Paul Gortmaker). - PNP framework update to make it treat ACPI_RESOURCE_TYPE_SERIAL_BUS as a valid resource type (Harb Abdulhamid). - New device ID (future AMD I2C controller) in the ACPI driver for AMD SoCs (APD) and in the designware I2C driver (Xiangliang Yu). - Assorted ACPI cleanups (Colin Ian King, Kaiyen Chang, Oleg Drokin). - cpuidle menu governor optimization to avoid a square root computation in it (Rasmus Villemoes). - Fix for potential use-after-free in the generic device properties framework (Heikki Krogerus). - Updates of the generic power domains (genpd) framework including support for multiple power states of a domain, fixes and debugfs output improvements (Axel Haslam, Jon Hunter, Laurent Pinchart, Geert Uytterhoeven). - Intel RAPL power capping driver updates to reduce IPI overhead in it (Jacob Pan). - System suspend/hibernation code cleanups (Eric Biggers, Saurabh Sengar). - Year 2038 fix for the process freezer (Abhilash Jindal). - turbostat utility updates including new features (decoding of more registers and CPUID fields, sub-second intervals support, GFX MHz and RC6 printout, --out command line option), fixes (syscall jitter detection and workaround, reductioin of the number of syscalls made, fixes related to Xeon x200 processors, compiler warning fixes) and cleanups (Len Brown, Hubert Chrzaniuk, Chen Yu)" * tag 'pm+acpi-4.6-rc1-1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (182 commits) tools/power turbostat: bugfix: TDP MSRs print bits fixing tools/power turbostat: correct output for MSR_NHM_SNB_PKG_CST_CFG_CTL dump tools/power turbostat: call __cpuid() instead of __get_cpuid() tools/power turbostat: indicate SMX and SGX support tools/power turbostat: detect and work around syscall jitter tools/power turbostat: show GFX%rc6 tools/power turbostat: show GFXMHz tools/power turbostat: show IRQs per CPU tools/power turbostat: make fewer systems calls tools/power turbostat: fix compiler warnings tools/power turbostat: add --out option for saving output in a file tools/power turbostat: re-name "%Busy" field to "Busy%" tools/power turbostat: Intel Xeon x200: fix turbo-ratio decoding tools/power turbostat: Intel Xeon x200: fix erroneous bclk value tools/power turbostat: allow sub-sec intervals ACPI / APEI: ERST: Fixed leaked resources in erst_init ACPI / APEI: Fix leaked resources intel_pstate: Do not skip samples partially intel_pstate: Remove freq calculation from intel_pstate_calc_busy() intel_pstate: Move intel_pstate_calc_busy() into get_target_pstate_use_performance() ...
| * | Merge branch 'turbostat' of ↵Rafael J. Wysocki2016-03-142-197/+724
| |\ \ | | |/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux into pm-tools Pull turbostat updates for 4.6 from Len Brown. * 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux: tools/power turbostat: bugfix: TDP MSRs print bits fixing tools/power turbostat: correct output for MSR_NHM_SNB_PKG_CST_CFG_CTL dump tools/power turbostat: call __cpuid() instead of __get_cpuid() tools/power turbostat: indicate SMX and SGX support tools/power turbostat: detect and work around syscall jitter tools/power turbostat: show GFX%rc6 tools/power turbostat: show GFXMHz tools/power turbostat: show IRQs per CPU tools/power turbostat: make fewer systems calls tools/power turbostat: fix compiler warnings tools/power turbostat: add --out option for saving output in a file tools/power turbostat: re-name "%Busy" field to "Busy%" tools/power turbostat: Intel Xeon x200: fix turbo-ratio decoding tools/power turbostat: Intel Xeon x200: fix erroneous bclk value tools/power turbostat: allow sub-sec intervals tools/power turbostat: Decode MSR_MISC_PWR_MGMT tools/power turbostat: decode HWP registers x86 msr-index: Simplify syntax for HWP fields tools/power turbostat: CPUID(0x16) leaf shows base, max, and bus frequency tools/power turbostat: decode more CPUID fields
| | * tools/power turbostat: bugfix: TDP MSRs print bits fixingChen Yu2016-03-131-10/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | MSR_CONFIG_TDP_NOMINAL: should print all 8 bits of base_ratio (bit 0:7) 0xFF MSR_CONFIG_TDP_LEVEL_1: should print all 15 bits of PKG_MIN_PWR_LVL1 (bit 48:62) 0x7FFF should print all 15 bits of PKG_MAX_PWR_LVL1 (bit 32:46) 0x7FFF should print all 8 bits of LVL1_RATIO (bit 16:23) 0xFF should print all 15 bits of PKG_TDP_LVL1 (bit 0:14) 0x7FFF And the same modification to MSR_CONFIG_TDP_LEVEL_2. MSR_TURBO_ACTIVATION_RATIO: should print all 8 bits of MAX_NON_TURBO_RATIO (bit 0:7) 0xFF Signed-off-by: Chen Yu <yu.c.chen@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
| | * tools/power turbostat: correct output for MSR_NHM_SNB_PKG_CST_CFG_CTL dumpLen Brown2016-03-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | MSR_NHM_SNB_PKG_CST_CFG_CTL: 0x1e008008 (...pkg-cstate-limit=0: unlimited) should print as MSR_NHM_SNB_PKG_CST_CFG_CTL: 0x1e008008 (...pkg-cstate-limit=8: unlimited) Signed-off-by: Len Brown <len.brown@intel.com>
| | * tools/power turbostat: call __cpuid() instead of __get_cpuid()Len Brown2016-03-131-7/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | turbostat already checks whether calling each cpuid leavf is legal, and it doesn't look at the function return value, so call the simpler gcc intrinsic __cpuid() instead of __get_cpuid(). syntax only, no functional change Signed-off-by: Len Brown <len.brown@intel.com>
| | * tools/power turbostat: indicate SMX and SGX supportLen Brown2016-03-131-1/+27
| | | | | | | | | | | | | | | | | | | | | SGX presence is related to a SKL power workaround, so lets show when that is enabled. Signed-off-by: Len Brown <len.brown@intel.com>
| | * tools/power turbostat: detect and work around syscall jitterLen Brown2016-03-131-1/+50
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The accuracy of Bzy_Mhz and Busy% depend on reading the TSC, APERF, and MPERF close together in time. When there is a very short measurement interval, or a large system is profoundly idle, the changes in APERF and MPERF may be very small. They can be small enough that an expensive interrupt between reading APERF and MPERF can cause the APERF/MPERF ratio to become inaccurate, resulting in invalid calculation and display of Bzy_MHz. A dummy APERF read of APERF makes this problem much more rare. Apparently this 1st systemn call after exiting a long stretch of idle is when we typically see expensive timer interrupts that cause large jitter. For the cases that dummy APERF read fails to prevent, we compare the latency of the APERF and MPERF reads. If they differ by more than 2x, we re-issue them. Signed-off-by: Len Brown <len.brown@intel.com>
| | * tools/power turbostat: show GFX%rc6Len Brown2016-03-131-0/+45
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The column "GFX%c6" show the percentage of time the GPU is in the "render C6" state, rc6. Deep package C-states on several systems depend on the GPU being in RC6. This information comes from the counter /sys/class/drm/card0/power/rc6_residency_ms, as read before and after the measurement interval. Signed-off-by: Len Brown <len.brown@intel.com>
| | * tools/power turbostat: show GFXMHzLen Brown2016-03-131-1/+49
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Under the column "GFXMHz", show a snapshot of this attribute: /sys/class/graphics/fb0/device/drm/card0/gt_cur_freq_mhz This is an instantaneous snapshot of what sysfs presents at the end of the measurement interval. turbostat does not average or otherwise perform any math on this value. Signed-off-by: Len Brown <len.brown@intel.com>
| | * tools/power turbostat: show IRQs per CPULen Brown2016-03-131-4/+122
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The new IRQ column shows how many interrupts have occurred on each CPU during the measurement inteval. This information comes from the difference between /proc/interrupts shapshots made before and after the measurement interval. The first row, the system summary, shows the sum of the IRQS for all CPUs during that interval. Signed-off-by: Len Brown <len.brown@intel.com>
| | * tools/power turbostat: make fewer systems callsLen Brown2016-03-131-10/+41
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | skip the open(2)/close(2) on each msr read by keeping the /dev/cpu/*/msr files open. The remaining read(2) is generally far fewer cycles than the removed open(2) system call. Signed-off-by: Len Brown <len.brown@intel.com>
| | * tools/power turbostat: fix compiler warningsLen Brown2016-03-131-4/+4
| | | | | | | | | | | | Signed-off-by: Len Brown <len.brown@intel.com>
| | * tools/power turbostat: add --out option for saving output in a fileLen Brown2016-03-132-135/+160
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | By default... Turbostat --debug gconfiguration info goes to stderr. In FORK mode, turbostat statistics go to stderr. In PERIODIC mode, turbostat statistics go to stdout. These defaults do not change, but an option "--out file" will send all output above only to the specified file. Signed-off-by: Len Brown <len.brown@intel.com>
| | * tools/power turbostat: re-name "%Busy" field to "Busy%"Len Brown2016-03-132-11/+11
| | | | | | | | | | | | | | | | | | | | | | | | some tools processing turbostat output have difficulty with items that begin with %... Reported-by: Jacob Pan <jacob.jun.pan@linux.intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
| | * tools/power turbostat: Intel Xeon x200: fix turbo-ratio decodingHubert Chrzaniuk2016-03-131-27/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Following changes have been made: - changed MSR_NHM_TURBO_RATIO_LIMIT to MSR_TURBO_RATIO_LIMIT in debug print for consistency with Developer Manual - updated definition of bitfields in MSR_TURBO_RATIO_LIMIT and appropriate parsing code - added x200 to list of architectures that do not support Nahlem compatible definition of MSR_TURBO_RATIO_LIMIT register (x200 has the register but bits definition is custom) - fixed typo in code that parses MSR_TURBO_RATIO_LIMIT (logical instead of bitwise operator) - changed MSR_TURBO_RATIO_LIMIT parsing algorithm so the print out had the same order as implementations for other platforms Signed-off-by: Hubert Chrzaniuk <hubert.chrzaniuk@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
| | * tools/power turbostat: Intel Xeon x200: fix erroneous bclk valueChrzaniuk, Hubert2016-03-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | x200 does not enable any way to programmatically obtain bus clock speed. Bclk for the architecture has a fixed value of 100 MHz. At the same time x200 cannot be included in has_snb_msrs since it does not support C7 idle state. prior to this patch, MHz values reported on this chip were erroneously calculated using bclk of 133MHz, causing MHz values to be reported 33% higher than actual. Signed-off-by: Hubert Chrzaniuk <hubert.chrzaniuk@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
| | * tools/power turbostat: allow sub-sec intervalsLen Brown2016-03-132-5/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | turbostat -i interval_sec will sample and display statistics every interval_sec. interval_sec used to be a whole number of seconds, but now we accept a decimal, as small as 0.001 sec (1 ms). Signed-off-by: Len Brown <len.brown@intel.com>
| | * tools/power turbostat: Decode MSR_MISC_PWR_MGMTLen Brown2016-02-171-0/+23
| | | | | | | | | | | | | | | | | | | | | This MSR is helpful to show if P-state HW coordination is enabled or disabled. Signed-off-by: Len Brown <len.brown@intel.com>
| | * tools/power turbostat: decode HWP registersLen Brown2016-02-171-6/+118
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | # turbostat --debug ... CPUID(6): ... HWP, HWPnotify, HWPwindow, HWPepp, HWPpkg ... ... cpu0: MSR_PM_ENABLE: 0x00000001 (HWP) cpu0: MSR_HWP_CAPABILITIES: 0x01050916 (high 0x16 guar 0x9 eff 0x5 low 0x1) cpu0: MSR_HWP_REQUEST: 0x80001604 (min 0x4 max 0x16 des 0x0 epp 0x80 window 0x0 pkg 0x0) cpu0: MSR_HWP_INTERRUPT: 0x00000001 (EN_Guaranteed_Perf_Change, Dis_Excursion_Min) cpu0: MSR_HWP_STATUS: 0x00000000 (No-Guaranteed_Perf_Change, No-Excursion_Min) Signed-off-by: Len Brown <len.brown@intel.com>
| | * tools/power turbostat: CPUID(0x16) leaf shows base, max, and bus frequencyLen Brown2016-02-171-5/+18
| | | | | | | | | | | | | | | | | | | | | | | | This CPUID leaf is available on Skylake: CPUID(0x16): base_mhz: 1500 max_mhz: 2200 bus_mhz: 100 Signed-off-by: Len Brown <len.brown@intel.com>
| | * tools/power turbostat: decode more CPUID fieldsLen Brown2016-02-171-1/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | for debugging, dump a few more fields: CPUID(1): SSE3 MONITOR EIST TM2 TSC MSR ACPI-TM TM cpu0: MSR_IA32_MISC_ENABLE: 0x00850089 (TCC EIST MONITOR) Signed-off-by: Len Brown <len.brown@intel.com>
* | | tools/power turbostat: fix various build warningsColin Ian King2016-03-031-4/+4
|/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When building with gcc 6 we're getting various build warnings that just require some trivial function declaration and call fixes: turbostat.c: In function ‘dump_cstate_pstate_config_info’: turbostat.c:1973:1: warning: type of ‘family’ defaults to ‘int’ dump_cstate_pstate_config_info(family, model) turbostat.c:1973:1: warning: type of ‘model’ defaults to ‘int’ turbostat.c: In function ‘get_tdp’: turbostat.c:2145:8: warning: type of ‘model’ defaults to ‘int’ double get_tdp(model) turbostat.c: In function ‘perf_limit_reasons_probe’: turbostat.c:2259:6: warning: type of ‘family’ defaults to ‘int’ void perf_limit_reasons_probe(family, model) turbostat.c:2259:6: warning: type of ‘model’ defaults to ‘int’ Signed-off-by: Colin Ian King <colin.king@canonical.com> Cc: Matt Fleming <matt@codeblueprint.co.uk> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/n/tip-wbicer8n0s9qe6ql8h9x478e@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | Merge branch 'pm-tools'Rafael J. Wysocki2016-01-211-0/+1
|\ \ | | | | | | | | | | | | * pm-tools: cpupower: Fix build error in cpufreq-info
| * | cpupower: Fix build error in cpufreq-infoShreyas B. Prabhu2016-01-191-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix the following build error by including limits.h - utils/cpufreq-info.c: In function ‘get_latency’: utils/cpufreq-info.c:437:29: error: ‘UINT_MAX’ undeclared (first use in this function) if (!latency || latency == UINT_MAX) { ^ Signed-off-by: Shreyas B. Prabhu <shreyas@linux.vnet.ibm.com> Fixes: e98f033f94f3 (cpupower: fix how "cpupower frequency-info" interprets latency) Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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