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x86, NMI: NMI-selftest should handle the UP case properly 

If no remote cpus are online, then just quietly skip the remote
IPI test for now.

Signed-off-by: Don Zickus <dzickus@redhat.com>
Cc: andi@firstfloor.org
Cc: torvalds@linux-foundation.org
Cc: peterz@infradead.org
Cc: robert.richter@amd.com
Link: http://lkml.kernel.org/r/20111206180859.GR1669@redhat.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Don Zickus 2011-12-06 13:08:59 -05:00 committed by Ingo Molnar
parent 53b5650273
commit 565cbc3e93
1 changed files with 2 additions and 1 deletions
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3
arch/x86/kernel/nmi_selftest.c
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@ -90,7 +90,8 @@ static void remote_ipi(void)
{
cpumask_copy(to_cpumask(nmi_ipi_mask), cpu_online_mask);
cpumask_clear_cpu(smp_processor_id(), to_cpumask(nmi_ipi_mask));
test_nmi_ipi(to_cpumask(nmi_ipi_mask));
if (!cpumask_empty(nmi_ipi_mask))
test_nmi_ipi(to_cpumask(nmi_ipi_mask));
}
static void local_ipi(void)