Lines Matching +full:system +full:- +full:clock +full:- +full:frequency
1 # SPDX-License-Identifier: GPL-2.0-only
2 menu "CPU Frequency scaling"
5 bool "CPU Frequency scaling"
7 CPU Frequency scaling allows you to change the clock speed of
9 the lower the CPU clock speed, the less power the CPU consumes.
12 clock speed, you need to either enable a dynamic cpufreq governor
16 <file:Documentation/admin-guide/pm/cpufreq.rst>.
31 bool "CPU frequency transition statistics"
33 Export CPU frequency statistics information through sysfs.
52 the frequency statically to the highest frequency supported by
60 the frequency statically to the lowest frequency supported by
68 you to set the CPU frequency manually or when a userspace
79 you to get a full dynamic frequency capable system by simply
80 loading your cpufreq low-level hardware driver.
92 you to get a full dynamic frequency capable system by simply
93 loading your cpufreq low-level hardware driver.
113 This cpufreq governor sets the frequency statically to the
114 highest available CPU frequency.
124 This cpufreq governor sets the frequency statically to the
125 lowest available CPU frequency.
133 tristate "'userspace' governor for userspace frequency scaling"
136 CPU frequency manually or when a userspace program shall
149 'ondemand' - This driver adds a dynamic cpufreq policy governor.
151 changes frequency based on the CPU utilization.
153 do fast frequency switching (i.e, very low latency frequency
160 <file:Documentation/admin-guide/pm/cpufreq.rst>.
169 'conservative' - this driver is rather similar to the 'ondemand'
172 environment. The frequency is gracefully increased and decreased
178 step-by-step latency issues between the minimum and maximum frequency
185 <file:Documentation/admin-guide/pm/cpufreq.rst>.
196 by the scheduler. It sets the CPU frequency to be proportional to
198 utilization is frequency-invariant, the new frequency is also
199 proportional to the maximum available frequency. If that is not the
200 case, it is proportional to the current frequency of the CPU. The
201 frequency tipping point is at utilization/capacity equal to 80% in
206 comment "CPU frequency scaling drivers"
214 This adds a generic DT based cpufreq driver for frequency management.
226 This adds a Rust based generic DT based cpufreq driver for frequency
240 frequency. If a VM does not support a virtualized FIE such as AMUs,
241 it updates the frequency scaling factor by polling host CPU frequency
242 to enable accurate Per-Entity Load Tracking for tasks running in the guest.
250 This adds a generic DT based cpufreq platdev driver for frequency
251 management. This creates a 'cpufreq-dt' platform device, on the
271 support for configurable CPU frequency.
282 support software configurable cpu frequency.
294 support software configurable cpu frequency.
296 Loongson-3 family processors support this feature.
303 tristate "UltraSPARC-III CPU Frequency driver"
305 This adds the CPUFreq driver for UltraSPARC-III processors.
310 tristate "UltraSPARC-IIe CPU Frequency driver"
312 This adds the CPUFreq driver for UltraSPARC-IIe processors.
319 tristate "SuperH CPU Frequency driver"
322 clock rate rounding through the clock framework can use this
332 tristate "CPU frequency scaling driver for Freescale QorIQ SoCs"
338 which are capable of changing the CPU's frequency dynamically.
358 bool "Frequency Invariance support for CPPC cpufreq driver"
363 This extends frequency invariance support in the CPPC cpufreq driver,