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(parent: ddcb57e) | patch
kthread_work: wake up worker only when the worker is idle
authorLai Jiangshan <laijs@cn.fujitsu.com>
Sat, 26 Jul 2014 04:03:59 +0000 (12:03 +0800)
committerTejun Heo <tj@kernel.org>
Mon, 28 Jul 2014 18:07:52 +0000 (14:07 -0400)
commited1403ec2bd463050e481cd29be40c504021676c
treedb9574ae09b6a593d8a3e239f532abf1dcfa7c3atree | snapshot
parentddcb57e2ed0a4d0de5aef06735dd9df98894f818commit | diff
kthread_work: wake up worker only when the worker is idle

If the worker is already executing a work item when another is queued,
we can safely skip wakeup without worrying about stalling queue thus
avoiding waking up the busy worker spuriously.  Spurious wakeups
should be fine but still isn't nice and avoiding it is trivial here.

tj: Updated description.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
kernel/kthread.c diff | blob | history
Unnamed repository; edit this file 'description' to name the repository.