user/sven/linux.git/include/acpi/cppc_acpi.h, branch v5.4.155

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441

2019-06-05T15:37:17Z

Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation version 2 of the license extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 315 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Allison Randal Reviewed-by: Armijn Hemel Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190531190115.503150771@linutronix.de Signed-off-by: Greg Kroah-Hartman

ACPI / CPPC: Add a helper to get desired performance

2019-02-18T10:27:42Z

This patch add a helper to get the value of desired performance register. Signed-off-by: Xiongfeng Wang [ rjw: More white space ] Signed-off-by: Rafael J. Wysocki

x86/kernel: Fix more -Wmissing-prototypes warnings

2018-12-08T11:24:35Z

... with the goal of eventually enabling -Wmissing-prototypes by default. At least on x86. Make functions static where possible, otherwise add prototypes or make them visible through includes. asm/trace/ changes courtesy of Steven Rostedt . Signed-off-by: Borislav Petkov Reviewed-by: Masami Hiramatsu Reviewed-by: Ingo Molnar Acked-by: Rafael J. Wysocki # ACPI + cpufreq bits Cc: Andrew Banman Cc: Dimitri Sivanich Cc: "H. Peter Anvin" Cc: Ingo Molnar Cc: Masami Hiramatsu Cc: Mike Travis Cc: "Steven Rostedt (VMware)" Cc: Thomas Gleixner Cc: Yi Wang Cc: linux-acpi@vger.kernel.org

ACPI / CPPC: Add support for guaranteed performance

2018-10-16T08:33:38Z

The Continuous Performance Control package may contain an optional guaranteed performance field. Add support to read guaranteed performance from _CPC. Signed-off-by: Srinivas Pandruvada Signed-off-by: Rafael J. Wysocki

ACPI / CPPC: Add support for CPPC v3

2018-04-24T10:33:28Z

CPPC V3 introduces two new entries to make it easier to convert between abstract processor performance and frequency. The two new entries are lowest frequency and nominal frequency. These are the frequencies corresponding to lowest and nominal abstract performance. Add support to read the new entries and populate them as part of the CPPC performance capabilities which can be used by cpufreq drivers Signed-off-by: Prashanth Prakash Signed-off-by: Rafael J. Wysocki

ACPI / CPPC: add sysfs entries for CPPC perf capabilities

2017-04-18T21:37:50Z

Computed delivered performance using CPPC feedback counters are in the CPPC abstract scale, whereas cppc_cpufreq driver operates in KHz scale. Exposing the CPPC performance capabilities (highest,lowest, nominal, lowest non-linear) will allow userspace to figure out the conversion factor from CPPC abstract scale to KHz. Also rename ctr_wrap_time to wraparound_time so that show_cppc_data() macro will work with it. Signed-off-by: Prashanth Prakash Signed-off-by: Rafael J. Wysocki

ACPI / CPPC: Read lowest nonlinear perf in cppc_get_perf_caps()

2017-04-18T21:37:49Z

Read lowest non linear perf in cppc_get_perf_caps so that it can be exposed via sysfs to the usespace. Lowest non linear perf is the lowest performance level at which nonlinear power savings are achieved. Signed-off-by: Prashanth Prakash Signed-off-by: Rafael J. Wysocki

ACPI / CPPC: Add prefix cppc to cpudata structure name

2016-09-08T21:02:15Z

Since struct cpudata is defined in a header file, add prefix cppc_ to make it not a generic name. Otherwise it causes compile issue in locally define structure with the same name. Signed-off-by: Srinivas Pandruvada Signed-off-by: Rafael J. Wysocki

ACPI / CPPC: check for error bit in PCC status field

2016-08-30T23:02:34Z

PCC status field exposes an error bit(2) to indicate any errors during the execution of last comamnd. This patch checks the error bit before notifying success/failure to the cpufreq driver. Signed-off-by: Prashanth Prakash Signed-off-by: Rafael J. Wysocki

ACPI / CPPC: add sysfs support to compute delivered performance

2016-08-30T23:02:34Z

The CPPC tables contain entries for per CPU feedback counters which allows us to compute the delivered performance over a given interval of time. The math for delivered performance per the CPPCv5.0+ spec is: reference perf * delta(delivered perf ctr)/delta(ref perf ctr) Maintaining deltas of the counters in the kernel is messy, as it depends on when the reads are triggered. (e.g. via the cpufreq ->get() interface). Also the ->get() interace only returns one value, so cant return raw values. So instead, leave it to userspace to keep track of raw values and do its math for CPUs it cares about. delivered and reference perf counters are exposed via the same sysfs file to avoid the potential "skid", if these values are read individually from userspace. Signed-off-by: Prashanth Prakash Signed-off-by: Ashwin Chaugule Signed-off-by: Rafael J. Wysocki