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workqueue: workqueue_cpu_callback() should be cpu_notifier instead of hotcpu_notifier

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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>
This commit is contained in:
Tejun Heo 2010-08-09 11:50:34 +02:00
parent 38f5156800
commit f6500947a9
1 changed files with 1 additions and 1 deletions
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kernel/workqueue.c
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@ -3527,7 +3527,7 @@ static int __init init_workqueues(void)
unsigned int cpu; unsigned int cpu;
int i; int i;
hotcpu_notifier(workqueue_cpu_callback, CPU_PRI_WORKQUEUE); cpu_notifier(workqueue_cpu_callback, CPU_PRI_WORKQUEUE);
/* initialize gcwqs */ /* initialize gcwqs */
for_each_gcwq_cpu(cpu) { for_each_gcwq_cpu(cpu) {