This is the upstream commit:
commit 1d64b655dc083df5c5ac39945ccbbc6532903bf1
Author: Dmitry Torokhov <[email protected]>
Date: Wed Feb 23 08:51:28 2011 -0800
Input: serio/gameport - use 'long' system workqueue
Commit 8ee294cd9def0004887da7f44b80563493b0a097 converted serio
subsystem event handling from using a dedicated thread to using
common workqueue. Unfortunately, this regressed our boot times,
due to the fact that serio jobs take long time to execute. While
the new concurrency managed workqueue code manages long-playing
works just fine and schedules additional workers as needed, such
works wreck havoc among remaining users of flush_scheduled_work().
To solve this problem let's move serio/gameport works from system_wq
to system_long_wq which nobody tries to flush.
Reported-and-tested-by: Hernando Torque <[email protected]>
Acked-by: Tejun Heo <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>
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https://bugs.launchpad.net/bugs/721389
Title:
Boot time regression 2.6.38
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