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>
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@ -1056,9 +1056,10 @@ static int smp_cpu_notify(struct notifier_block *self, unsigned long action,
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switch (action & ~CPU_TASKS_FROZEN) {
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switch (action & ~CPU_TASKS_FROZEN) {
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case CPU_ONLINE:
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case CPU_ONLINE:
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case CPU_DOWN_FAILED:
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err = sysfs_create_group(&s->kobj, &cpu_online_attr_group);
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err = sysfs_create_group(&s->kobj, &cpu_online_attr_group);
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break;
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break;
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case CPU_DEAD:
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case CPU_DOWN_PREPARE:
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sysfs_remove_group(&s->kobj, &cpu_online_attr_group);
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sysfs_remove_group(&s->kobj, &cpu_online_attr_group);
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break;
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break;
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}
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}
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