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/Linux-v5.4/Documentation/admin-guide/pm/
Dintel_pstate.rst5 ``intel_pstate`` CPU Performance Scaling Driver
16 ``intel_pstate`` is a part of the
20 may not be supported. [To understand ``intel_pstate`` it is necessary to know
24 For the processors supported by ``intel_pstate``, the P-state concept is broader
28 by ``intel_pstate`` internally follows the hardware specification (for details
32 ``intel_pstate`` maps its internal representation of P-states to frequencies too
34 practical for ``intel_pstate`` to supply the ``CPUFreq`` core with a table of
38 Since the hardware P-state selection interface used by ``intel_pstate`` is
40 CPUs. Consequently, if ``intel_pstate`` is in use, every ``CPUFreq`` policy
46 ``intel_pstate`` is not modular, so it cannot be unloaded, which means that the
[all …]
Dworking-state.rst12 intel_pstate
Dcpufreq.rst5 .. |intel_pstate| replace:: :doc:`intel_pstate <intel_pstate>` substdef
83 algorithms. That is done by the |intel_pstate| scaling driver.
182 As mentioned before, the |intel_pstate| scaling driver bypasses the scaling
184 Consequently, if |intel_pstate| is used, scaling governors are not attached to
188 governors, but in the |intel_pstate| case they both determine the P-state to
273 be attached to this policy or (if the |intel_pstate| scaling driver is
300 |intel_pstate| scaling driver is in use) the scaling algorithm
306 |intel_pstate| case), as indicated by the string written to this
627 |intel_pstate|).
/Linux-v5.4/tools/testing/selftests/intel_pstate/
Drun.sh69 max_perf_pct=$(cat /sys/devices/system/cpu/intel_pstate/max_perf_pct)
/Linux-v5.4/drivers/cpufreq/
Dintel_pstate.c1087 static struct cpufreq_driver intel_pstate; variable
1151 if (intel_pstate_driver == &intel_pstate) in store_max_perf_pct()
1185 if (intel_pstate_driver == &intel_pstate) in store_min_perf_pct()
2258 static struct cpufreq_driver intel_pstate = { variable
2470 static struct cpufreq_driver *default_driver = &intel_pstate;
2479 if (intel_pstate_driver == &intel_pstate) in intel_pstate_driver_cleanup()
2525 return sprintf(buf, "%s\n", intel_pstate_driver == &intel_pstate ? in intel_pstate_show_status()
2539 if (intel_pstate_driver == &intel_pstate) in intel_pstate_update_status()
2547 return intel_pstate_register_driver(&intel_pstate); in intel_pstate_update_status()
2759 intel_pstate.attr = hwp_cpufreq_attrs; in intel_pstate_init()
DMakefile44 obj-$(CONFIG_X86_INTEL_PSTATE) += intel_pstate.o
/Linux-v5.4/tools/testing/selftests/
DMakefile18 TARGETS += intel_pstate
/Linux-v5.4/Documentation/ABI/testing/
Dsysfs-devices-system-cpu309 What: /sys/devices/system/cpu/intel_pstate/max_perf_pct
310 /sys/devices/system/cpu/intel_pstate/min_perf_pct
311 /sys/devices/system/cpu/intel_pstate/no_turbo
331 Documentation/admin-guide/pm/intel_pstate.rst
/Linux-v5.4/Documentation/admin-guide/
Dkernel-parameters.txt1755 intel_pstate= [X86]
1757 Do not enable intel_pstate as the default
1760 Use intel_pstate as a scaling driver, but configure it
1766 Enable intel_pstate on systems that prohibit it by default
1767 in favor of acpi-cpufreq. Forcing the intel_pstate driver
1772 processors that aren't supported by the intel_pstate driver
1778 Only load intel_pstate on systems which support
/Linux-v5.4/
DMAINTAINERS4263 F: Documentation/admin-guide/pm/intel_pstate.rst
8426 F: drivers/cpufreq/intel_pstate.c