Messages in this thread Patch in this message | | | Date | Tue, 6 Dec 2011 12:25:40 -0800 | From | tip-bot for Don Zickus <> | Subject | [tip:x86/debug] x86, NMI: NMI-selftest should handle the UP case properly |
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Commit-ID: 565cbc3e934f221369a656b4469a044aa4c3f2a8 Gitweb: http://git.kernel.org/tip/565cbc3e934f221369a656b4469a044aa4c3f2a8 Author: Don Zickus <dzickus@redhat.com> AuthorDate: Tue, 6 Dec 2011 13:08:59 -0500 Committer: Ingo Molnar <mingo@elte.hu> CommitDate: Tue, 6 Dec 2011 21:02:39 +0100
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> --- arch/x86/kernel/nmi_selftest.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/arch/x86/kernel/nmi_selftest.c b/arch/x86/kernel/nmi_selftest.c index 572adb6..1e42a23 100644 --- a/arch/x86/kernel/nmi_selftest.c +++ b/arch/x86/kernel/nmi_selftest.c @@ -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)
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