Commit f47ab81a authored Mar 19, 2016 by Thomas Gleixner

x86/apic/uv: Fix the hotplug notifier



The notifier is missing the CPU_DOWN_FAILED transition. That leaves the
heartbeat disabled when CPU_DOWN_PREPARE fails.

It also does not handle the FROZEN transition variants. That might not be an
issue for UV, but it's inconsistent.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Dimitri Sivanich <sivanich@sgi.com>

parent a38f9873

arch/x86/kernel/apic/x2apic_uv_x.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -792,7 +792,8 @@ static int uv_scir_cpu_notify(struct notifier_block *self, unsigned long action,
		{
		long cpu = (long)hcpu;

		switch (action) {
		switch (action & ~CPU_TASKS_FROZEN) {
		case CPU_DOWN_FAILED:
		case CPU_ONLINE:
		uv_heartbeat_enable(cpu);
		break;