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Documentation: PM: Document intel_idle.table command line option

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Add the 'intel_idle.table' command line option description to the
intel_idle document in admin-guide.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
[ rjw: Subject adjustment, changelog edits]
Link: https://patch.msgid.link/20260205125354.632891-1-artem.bityutskiy@linux.intel.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Artem Bityutskiy 2026-02-05 12:53:54 +00:00 • committed by Rafael J. Wysocki
parent 9b1b3dcd28
commit c900e33e30
1 changed files with 11 additions and 0 deletions
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11
Documentation/admin-guide/pm/intel_idle.rst
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@ -260,6 +260,17 @@ mode to off when the CPU is in any one of the available idle states. This may
help performance of a sibling CPU at the expense of a slightly higher wakeup
latency for the idle CPU.
The ``table`` argument allows customization of idle state latency and target
residency. The syntax is a comma-separated list of ``name:latency:residency``
entries, where ``name`` is the idle state name, ``latency`` is the exit latency
in microseconds, and ``residency`` is the target residency in microseconds. It
is not necessary to specify all idle states; only those to be customized. For
example, ``C1:1:3,C6:50:100`` sets the exit latency and target residency for
C1 and C6 to 1/3 and 50/100 microseconds, respectively. Remaining idle states
keep their default values. The driver verifies that deeper idle states have
higher latency and target residency than shallower ones. Also, target
residency cannot be smaller than exit latency. If any of these conditions is
not met, the driver ignores the entire ``table`` parameter.
.. _intel-idle-core-and-package-idle-states: