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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-09-04 22:27:24 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-09-04 22:27:24 +0200 |
| commit | f162626a038ec06da98ac38ce3d6bdbd715e9c5f (patch) | |
| tree | cce5ef725db1920f734c3c04049427ed7eea3447 /Documentation | |
| parent | Merge tag 'libata-5.9-2020-09-04' of git://git.kernel.dk/linux-block (diff) | |
| parent | Merge branch 'pm-cpufreq' (diff) | |
| download | linux-f162626a038ec06da98ac38ce3d6bdbd715e9c5f.tar.xz linux-f162626a038ec06da98ac38ce3d6bdbd715e9c5f.zip | |
Merge tag 'pm-5.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These fix reference counting in the operating performance points (OPP)
framework and address a few intel_pstate driver issues, mostly related
to switching driver operation modes and similar with hardware-managed
P-states (HWP) enabled.
Specifics:
- Fix reference counting of operating performance points (OPP) tables
(Viresh Kumar).
- Address intel_pstate driver interface issues, mostly related to
switching operation modes and handling CPU offline and online and
system-wide suspend/resume with hardware-managed P-states (HWP)
enabled (Rafael Wysocki).
- Fix the maximum frequency computation in the intel_pstate driver
with turbo P-states disabled by the platform firmware and HWP
enabled (Francisco Jerez)"
* tag 'pm-5.9-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: intel_pstate: Fix intel_pstate_get_hwp_max() for turbo disabled
cpufreq: intel_pstate: Free memory only when turning off
cpufreq: intel_pstate: Add ->offline and ->online callbacks
cpufreq: intel_pstate: Tweak the EPP sysfs interface
cpufreq: intel_pstate: Update cached EPP in the active mode
cpufreq: intel_pstate: Refuse to turn off with HWP enabled
opp: Don't drop reference for an OPP table that was never parsed
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/admin-guide/pm/intel_pstate.rst | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/Documentation/admin-guide/pm/intel_pstate.rst b/Documentation/admin-guide/pm/intel_pstate.rst index cdd1a9a7f9a2..5072e7064d13 100644 --- a/Documentation/admin-guide/pm/intel_pstate.rst +++ b/Documentation/admin-guide/pm/intel_pstate.rst @@ -123,7 +123,9 @@ Energy-Performance Bias (EPB) knob (otherwise), which means that the processor's internal P-state selection logic is expected to focus entirely on performance. This will override the EPP/EPB setting coming from the ``sysfs`` interface -(see `Energy vs Performance Hints`_ below). +(see `Energy vs Performance Hints`_ below). Moreover, any attempts to change +the EPP/EPB to a value different from 0 ("performance") via ``sysfs`` in this +configuration will be rejected. Also, in this configuration the range of P-states available to the processor's internal P-state selection logic is always restricted to the upper boundary |