workqueue: workqueue_cpu_callback() should be cpu_notifier instead of hotcpu_notifier
authorTejun Heo <tj@kernel.org>
Mon, 9 Aug 2010 09:50:34 +0000 (11:50 +0200)
committerTejun Heo <tj@kernel.org>
Mon, 9 Aug 2010 09:50:34 +0000 (11:50 +0200)
commitf6500947a9cbb81cfa07ff344f16955d9c6ebe61
tree6544ae45f39370fd35cb44076dc4628bd852bc19
parent38f51568005873a241a8ae6bf28c9ddd3f6a11ed
workqueue: workqueue_cpu_callback() should be cpu_notifier instead of hotcpu_notifier

Commit 6ee0578b (workqueue: mark init_workqueues as early_initcall)
made workqueue SMP initialization depend on workqueue_cpu_callback(),
which however was registered as hotcpu_notifier() and didn't get
called if CONFIG_HOTPLUG_CPU is not set.  This made gcwqs on non-boot
CPUs not create their initial workers leading to boot failures.  Fix
it by making it a cpu_notifier.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-and-bisected-by: walt <w41ter@gmail.com>
Tested-by: Markus Trippelsdorf <markus@trippelsdorf.de>
kernel/workqueue.c