From: Lai Jiangshan <laijs@cn.fujitsu.com>
Date: Wed, 20 Mar 2013 17:52:30 +0000 (-0700)
Subject: workqueue: kick a worker in pwq_adjust_max_active()
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~125^2~28
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=951a078a5285ad31bc22e190616ad54b78fac992;p=pandora-kernel.git

workqueue: kick a worker in pwq_adjust_max_active()

If pwq_adjust_max_active() changes max_active from 0 to
saved_max_active, it needs to wakeup worker.  This is already done by
thaw_workqueues().

If pwq_adjust_max_active() increases max_active for an unbound wq,
while not strictly necessary for correctness, it's still desirable to
wake up a worker so that the requested concurrency level is reached
sooner.

Move wake_up_worker() call from thaw_workqueues() to
pwq_adjust_max_active() so that it can handle both of the above two
cases.  This also makes thaw_workqueues() simpler.

tj: Updated comments and description.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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