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| author | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2020-03-02 11:15:53 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2020-03-12 06:08:00 +0300 |
| commit | cbbc70a8cde7edb427b6cf00b3bc0f86181e2b4d (patch) | |
| tree | 8ff658f2e45c6da74d9150dff605c66f626c60c3 /Documentation/scsi/link_power_management_policy.rst | |
| parent | a88dc3ec2ca48d23c7761af02e1ceea731f609e9 (diff) | |
| download | linux-cbbc70a8cde7edb427b6cf00b3bc0f86181e2b4d.tar.xz | |
scsi: docs: convert link_power_management_policy.txt to ReST
Link: https://lore.kernel.org/r/c56177fdf046d80e0dec6031c4139cb4e8c39d31.1583136624.git.mchehab+huawei@kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'Documentation/scsi/link_power_management_policy.rst')
| -rw-r--r-- | Documentation/scsi/link_power_management_policy.rst | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/Documentation/scsi/link_power_management_policy.rst b/Documentation/scsi/link_power_management_policy.rst new file mode 100644 index 000000000000..64288dcf10f6 --- /dev/null +++ b/Documentation/scsi/link_power_management_policy.rst @@ -0,0 +1,25 @@ +.. SPDX-License-Identifier: GPL-2.0 + +========================== +Link Power Managent Policy +========================== + +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. +===================== ===================================================== |