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tools/power/cpupower: Add documentation for some recently introduced options

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The 'cpupower-set' tool has been enhanced with new features:

  commit f2ab555711 ("cpupower: Add EPP value change support")
  commit df8776b036 ("cpupower: Add support for amd_pstate mode change")
  commit eb426fc6bd ("cpupower: Add turbo-boost support in cpupower")

However, the corresponding manpage was never updated.

Add a basic description of these new options to the existing manpage.

Commit description updated to fix checkpatch errors: Shuah Khan

Signed-off-by: Tor Vic <torvic9@mailbox.org>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
This commit is contained in:
Tor Vic 2024-09-24 16:17:47 +02:00 committed by Shuah Khan
parent 9852d85ec9
commit 7043a9f77c
1 changed files with 36 additions and 2 deletions
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38
tools/power/cpupower/man/cpupower-set.1
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@ -3,7 +3,7 @@
cpupower\-set \- Set processor power related kernel or hardware configurations
.SH SYNOPSIS
.ft B
.B cpupower set [ \-b VAL ]
.B cpupower set [ \-b VAL | \-e POLICY | \-m MODE | \-t BOOL ]
.SH DESCRIPTION
@ -19,7 +19,7 @@ described in the Options sections.
Use \fBcpupower info \fP to read out current settings and whether they are
supported on the system at all.
.SH Options
.SH OPTIONS
.PP
\-\-perf-bias, \-b
.RS 4
@ -56,6 +56,40 @@ Use \fBcpupower -c all info -b\fP to verify.
This options needs the msr kernel driver (CONFIG_X86_MSR) loaded.
.RE
.PP
\-\-epp, \-e
.RS 4
Sets the energy performance policy preference on supported Intel or AMD
processors which use the Intel or AMD P-State cpufreq driver respectively.
Available policies can be found with
\fBcat /sys/devices/system/cpu/cpufreq/policy0/energy_performance_available_preferences\fP :
.RS 4
default performance balance_performance balance_power power
.RE
.RE
.PP
\-\-amd\-pstate\-mode, \-m
.RS 4
Sets the AMD P-State mode for supported AMD processors.
Available modes are "active", "guided" or "passive".
Refer to the AMD P-State kernel documentation for further information.
.RE
.PP
\-\-turbo\-boost, \-t
.RS 4
This option is used to enable or disable the turbo boost feature on
supported Intel and AMD processors.
This option takes as parameter either \fB1\fP to enable, or \fB0\fP to disable the feature.
.RE
.SH "SEE ALSO"
cpupower-info(1), cpupower-monitor(1), powertop(1)
.PP