Public bug reported:

To enable NVME APST (autonomous power state transitions) to conserve
NVME power consumption, this commit is required:

commit 034e7906211c18c230ef4da43a1c44796dd5b95e
Author: Andrew Lutomirski <[email protected]>
Date:   Tue Nov 29 17:11:52 2016 -0800

    PM / QoS: Export dev_pm_qos_update_user_latency_tolerance

    nvme wants a module parameter that overrides the default latency
    tolerance.  This makes it easy for nvme to reflect that default in
    sysfs.

    Signed-off-by: Andy Lutomirski <[email protected]>
    Signed-off-by: Rafael J. Wysocki <[email protected]>

It can be cleanly picked into Xenail and Yakkety kernel.

** Affects: linux (Ubuntu)
     Importance: Undecided
     Assignee: Kai-Heng Feng (kaihengfeng)
         Status: New


** Tags: originate-from-1659177 somerville

** Changed in: linux (Ubuntu)
     Assignee: (unassigned) => Kai-Heng Feng (kaihengfeng)

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https://bugs.launchpad.net/bugs/1666401

Title:
  Export symbol "dev_pm_qos_update_user_latency_tolerance"

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