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x86/apic/uv: Fix the hotplug notifier

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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>
This commit is contained in:
Thomas Gleixner 2016-03-19 11:47:39 +01:00
parent a38f98735e
commit f47ab81aca
1 changed files with 2 additions and 1 deletions
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3
arch/x86/kernel/apic/x2apic_uv_x.c
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@ -792,7 +792,8 @@ static int uv_scir_cpu_notify(struct notifier_block *self, unsigned long action,
{ {
long cpu = (long)hcpu; long cpu = (long)hcpu;
switch (action) { switch (action & ~CPU_TASKS_FROZEN) {
case CPU_DOWN_FAILED:
case CPU_ONLINE: case CPU_ONLINE:
uv_heartbeat_enable(cpu); uv_heartbeat_enable(cpu);
break; break;