summaryrefslogtreecommitdiff
path: root/Documentation/admin-guide/pm
diff options
context:
space:
mode:
authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2019-12-13 09:56:13 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2019-12-27 11:02:08 +0100
commit75a80267410e38ab76c4ceb39753f96d72113781 (patch)
tree08c172e0d40ae21128686957ec078065ef4bc1d0 /Documentation/admin-guide/pm
parent18734958e9bfbc055805d110a38dc76307eba742 (diff)
cpuidle: Allow idle states to be disabled by default
In certain situations it may be useful to prevent some idle states from being used by default while allowing user space to enable them later on. For this purpose, introduce a new state flag, CPUIDLE_FLAG_OFF, to mark idle states that should be disabled by default, make the core set CPUIDLE_STATE_DISABLED_BY_USER for those states at the initialization time and add a new state attribute in sysfs, "default_status", to inform user space of the initial status of the given idle state ("disabled" if CPUIDLE_FLAG_OFF is set for it, "enabled" otherwise). Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'Documentation/admin-guide/pm')
-rw-r--r--Documentation/admin-guide/pm/cpuidle.rst3
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/admin-guide/pm/cpuidle.rst b/Documentation/admin-guide/pm/cpuidle.rst
index e70b365dbc60..311cd7cc2b75 100644
--- a/Documentation/admin-guide/pm/cpuidle.rst
+++ b/Documentation/admin-guide/pm/cpuidle.rst
@@ -506,6 +506,9 @@ object corresponding to it, as follows:
``disable``
Whether or not this idle state is disabled.
+``default_status``
+ The default status of this state, "enabled" or "disabled".
+
``latency``
Exit latency of the idle state in microseconds.