Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / Documentation / scsi / link_power_management_policy.txt

diff --git a/kernel/Documentation/scsi/link_power_management_policy.txt b/kernel/Documentation/scsi/link_power_management_policy.txt
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+This parameter allows the user to set the link (interface) power management.
+There are 3 possible options:
+
+Value                  Effect
+----------------------------------------------------------------------------
+min_power              Tell the controller to try to make the link use the
+                       least possible power when possible.  This may
+                       sacrifice some performance due to increased latency
+                       when coming out of lower power states.
+
+max_performance                Generally, this means no power management.  Tell
+                       the controller to have performance be a priority
+                       over power management.
+
+medium_power           Tell the controller to enter a lower power state
+                       when possible, but do not enter the lowest power
+                       state, thus improving latency over min_power setting.
+
+