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Commit f6500947 authored by Tejun Heo's avatar Tejun Heo
Browse files

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: default avatarTejun Heo <tj@kernel.org>
Reported-and-bisected-by: default avatarwalt <w41ter@gmail.com>
Tested-by: default avatarMarkus Trippelsdorf <markus@trippelsdorf.de>
parent 38f51568

kernel/workqueue.c

+1 −1
Original line number Diff line number Diff line
@@ -3527,7 +3527,7 @@ static int __init init_workqueues(void) 
	unsigned int cpu;

	int i;



	hotcpu_notifier(workqueue_cpu_callback, CPU_PRI_WORKQUEUE);

	cpu_notifier(workqueue_cpu_callback, CPU_PRI_WORKQUEUE);



	/* initialize gcwqs */

	for_each_gcwq_cpu(cpu) {