Commit ef65d45c authored Nov 04, 2016 by Thomas Gleixner

s390/smp: Make cpu notifier symetric



There is no reason to remove the sysfs cpu files when the CPU is dead, they
can be removed when the cpu is prepared to go down. Doing it at
DOWN_PREPARE allows us to convert it to a symetric hotplug state in the
next step.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: linux-s390@vger.kernel.org
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20161104144140.lcee6kwmwlx37m7g@linutronix.de


Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

parent a4fc1bfc

arch/s390/kernel/smp.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -1056,9 +1056,10 @@ static int smp_cpu_notify(struct notifier_block *self, unsigned long action,

		switch (action & ~CPU_TASKS_FROZEN) {
		case CPU_ONLINE:
		case CPU_DOWN_FAILED:
		err = sysfs_create_group(&s->kobj, &cpu_online_attr_group);
		break;
		case CPU_DEAD:
		case CPU_DOWN_PREPARE:
		sysfs_remove_group(&s->kobj, &cpu_online_attr_group);
		break;
		}

Admin message