diff options
Diffstat (limited to 'drivers/cpufreq/Kconfig.x86')
| -rw-r--r-- | drivers/cpufreq/Kconfig.x86 | 97 |
1 files changed, 76 insertions, 21 deletions
diff --git a/drivers/cpufreq/Kconfig.x86 b/drivers/cpufreq/Kconfig.x86 index 35f71825b7f3..2c5c228408bf 100644 --- a/drivers/cpufreq/Kconfig.x86 +++ b/drivers/cpufreq/Kconfig.x86 @@ -1,19 +1,22 @@ +# SPDX-License-Identifier: GPL-2.0-only # # x86 CPU Frequency scaling drivers # config X86_INTEL_PSTATE - bool "Intel P state control" - depends on X86 - select ACPI_PROCESSOR if ACPI - select ACPI_CPPC_LIB if X86_64 && ACPI && SCHED_MC_PRIO - help - This driver provides a P state for Intel core processors. + bool "Intel P state control" + depends on X86 + select ACPI_PROCESSOR if ACPI + select ACPI_CPPC_LIB if X86_64 && ACPI && SCHED_MC_PRIO + select CPU_FREQ_GOV_PERFORMANCE + select CPU_FREQ_GOV_SCHEDUTIL if SMP + help + This driver provides a P state for Intel core processors. The driver implements an internal governor and will become - the scaling driver and governor for Sandy bridge processors. + the scaling driver and governor for Sandy bridge processors. When this driver is enabled it will become the preferred - scaling driver for Sandy bridge processors. + scaling driver for Sandy bridge processors. If in doubt, say N. @@ -24,13 +27,63 @@ config X86_PCC_CPUFREQ This driver adds support for the PCC interface. For details, take a look at: - <file:Documentation/cpu-freq/pcc-cpufreq.txt>. + <file:Documentation/admin-guide/pm/cpufreq_drivers.rst>. To compile this driver as a module, choose M here: the module will be called pcc-cpufreq. If in doubt, say N. +config X86_AMD_PSTATE + bool "AMD Processor P-State driver" + depends on X86 && ACPI + select ACPI_PROCESSOR + select ACPI_CPPC_LIB if X86_64 + select CPU_FREQ_GOV_SCHEDUTIL if SMP + help + This driver adds a CPUFreq driver which utilizes a fine grain + processor performance frequency control range instead of legacy + performance levels. _CPC needs to be present in the ACPI tables + of the system. + + For details, take a look at: + <file:Documentation/admin-guide/pm/amd-pstate.rst>. + + If in doubt, say N. + +config X86_AMD_PSTATE_DEFAULT_MODE + int "AMD Processor P-State default mode" + depends on X86_AMD_PSTATE + default 3 if X86_AMD_PSTATE + range 1 4 + help + Select the default mode the amd-pstate driver will use on + supported hardware. + The value set has the following meanings: + 1 -> Disabled + 2 -> Passive + 3 -> Active (EPP) + 4 -> Guided + + For details, take a look at: + <file:Documentation/admin-guide/pm/amd-pstate.rst>. + +config X86_AMD_PSTATE_UT + tristate "selftest for AMD Processor P-State driver" + depends on X86 && ACPI_PROCESSOR + depends on X86_AMD_PSTATE + default n + help + This kernel module is used for testing. It's safe to say M here. + + It can also be built-in without X86_AMD_PSTATE enabled. + Currently, only tests for amd-pstate are supported. If X86_AMD_PSTATE + is set disabled, it can tell the users test can only run on amd-pstate + driver, please set X86_AMD_PSTATE enabled. + In the future, comparison tests will be added. It can set amd-pstate + disabled and set acpi-cpufreq enabled to run test cases, then compare + the test results. + config X86_ACPI_CPUFREQ tristate "ACPI Processor P-States driver" depends on ACPI_PROCESSOR @@ -59,20 +112,10 @@ config X86_ACPI_CPUFREQ_CPB By enabling this option the acpi_cpufreq driver provides the old entry in addition to the new boost ones, for compatibility reasons. -config X86_SFI_CPUFREQ - tristate "SFI Performance-States driver" - depends on X86_INTEL_MID && SFI - help - This adds a CPUFreq driver for some Silvermont based Intel Atom - architectures like Z34xx and Z35xx which enumerate processor - performance states through SFI. - - If in doubt, say N. - config ELAN_CPUFREQ tristate "AMD Elan SC400 and SC410" depends on MELAN - ---help--- + help This adds the CPUFreq driver for AMD Elan SC400 and SC410 processors. @@ -87,7 +130,7 @@ config ELAN_CPUFREQ config SC520_CPUFREQ tristate "AMD Elan SC520" depends on MELAN - ---help--- + help This adds the CPUFreq driver for AMD Elan SC520 processor. For details, take a look at <file:Documentation/cpu-freq/>. @@ -297,3 +340,15 @@ config X86_SPEEDSTEP_RELAXED_CAP_CHECK option lets the probing code bypass some of those checks if the parameter "relaxed_check=1" is passed to the module. +config CPUFREQ_ARCH_CUR_FREQ + default y + bool "Current frequency derived from HW provided feedback" + help + This determines whether the scaling_cur_freq sysfs attribute returns + the last requested frequency or a more precise value based on hardware + provided feedback (as architected counters). + Given that a more precise frequency can now be provided via the + cpuinfo_avg_freq attribute, by enabling this option, + scaling_cur_freq maintains the provision of a counter based frequency, + for compatibility reasons. + |