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| author |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2018-12-05 23:45:34 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2018-12-11 12:08:44 +0100 |
| commit | 61cb5758d3c46bc1ba87694fefc0d9653613ce6b (patch) | |
| tree | 122cbd1c3de0c1c3bf4591fb975e4de6d4de3ca0 /Documentation/admin-guide | |
| parent | cpuidle: poll_state: Disregard disable idle states (diff) | |
| download | linux-dev-61cb5758d3c46bc1ba87694fefc0d9653613ce6b.tar.xz linux-dev-61cb5758d3c46bc1ba87694fefc0d9653613ce6b.zip | |
cpuidle: Add cpuidle.governor= command line parameter
Add cpuidle.governor= command line parameter to allow the default
cpuidle governor to be replaced.
That is useful, for example, if someone running a tickful kernel
wants to use the menu governor on it.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'Documentation/admin-guide')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 3 | ||||
| -rw-r--r-- | Documentation/admin-guide/pm/cpuidle.rst | 7 |
2 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 19f4423e70d9..60fb9913af48 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -674,6 +674,9 @@ cpuidle.off=1 [CPU_IDLE] disable the cpuidle sub-system + cpuidle.governor= + [CPU_IDLE] Name of the cpuidle governor to use. + cpufreq.off=1 [CPU_FREQ] disable the cpufreq sub-system diff --git a/Documentation/admin-guide/pm/cpuidle.rst b/Documentation/admin-guide/pm/cpuidle.rst index 80b4f26547ac..9a34484fd6e4 100644 --- a/Documentation/admin-guide/pm/cpuidle.rst +++ b/Documentation/admin-guide/pm/cpuidle.rst @@ -566,6 +566,13 @@ processors implementing the architecture (i.e. CPU instruction set) in question, however, so it is rather crude and not very energy-efficient. For this reason, it is not recommended for production use. +The ``cpuidle.governor=`` kernel command line switch allows the ``CPUIdle`` +governor to use to be specified. It has to be appended with a string matching +the name of an available governor (e.g. ``cpuidle.governor=menu``) and that +governor will be used instead of the default one. It is possible to force +the ``menu`` governor to be used on the systems that use the ``ladder`` governor +by default this way, for example. + The other kernel command line parameters controlling CPU idle time management described below are only relevant for the *x86* architecture and some of them affect Intel processors only. |