From 76569faa62c46382e080c3e190c66e19515aae1c Mon Sep 17 00:00:00 2001
From: "Liu, Chuansheng" <chuansheng.liu@intel.com>
Date: Tue, 18 Feb 2014 10:28:45 +0800
Subject: [PATCH] PM / sleep: Asynchronous threads for resume_noirq

In analogy with commits 5af84b82701a and 97df8c12995, using
asynchronous threads can improve the overall resume_noirq time
significantly.

One typical case is:
In resume_noirq phase and for the PCI devices, the function
pci_pm_resume_noirq() will be called, and there is one d3_delay
(10ms) at least.

With the way of asynchronous threads, we just need wait d3_delay
time once in parallel for each calling, which saves much time to
resume quickly.

Signed-off-by: Chuansheng Liu <chuansheng.liu@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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