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| author | Artem Bityutskiy <artem.bityutskiy@linux.intel.com> | 2026-02-05 12:53:54 +0000 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2026-02-11 21:08:23 +0100 |
| commit | c900e33e30e9d32fe8cfc89202ee339f9a66aabc (patch) | |
| tree | 6257cda173ddc1d32a72bbce59d84d92d7a12869 | |
| parent | 9b1b3dcd28c271fc8c4a87e81860f3a34b6d29b7 (diff) | |
Documentation: PM: Document intel_idle.table command line option
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>
| -rw-r--r-- | Documentation/admin-guide/pm/intel_idle.rst | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Documentation/admin-guide/pm/intel_idle.rst b/Documentation/admin-guide/pm/intel_idle.rst index ed6f055d4b14..188d52cd26e8 100644 --- a/Documentation/admin-guide/pm/intel_idle.rst +++ b/Documentation/admin-guide/pm/intel_idle.rst @@ -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: |