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authorRafael J. Wysocki <rjw@sisk.pl>2009-08-23 00:03:00 +0200
committerRafael J. Wysocki <rjw@sisk.pl>2009-08-23 00:03:00 +0200
commit8400146d0dc03590bba051399e4bb7e1cbf1c010 (patch)
tree4c0c88273ff31e5e5f51c10d8727acab460b57ec /arch/x86/kernel/apic/ipi.c
parent39cf0518d89d1f0af79554457c52adb5b12fa43c (diff)
parent3edf2fb9d80a46d6c32ba12547a42419845b4b76 (diff)
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Merge branch 'master' into for-linus
Diffstat (limited to 'arch/x86/kernel/apic/ipi.c')
-rw-r--r--arch/x86/kernel/apic/ipi.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kernel/apic/ipi.c b/arch/x86/kernel/apic/ipi.c
index dbf5445..6ef00ba 100644
--- a/arch/x86/kernel/apic/ipi.c
+++ b/arch/x86/kernel/apic/ipi.c
@@ -106,6 +106,9 @@ void default_send_IPI_mask_logical(const struct cpumask *cpumask, int vector)
unsigned long mask = cpumask_bits(cpumask)[0];
unsigned long flags;
+ if (WARN_ONCE(!mask, "empty IPI mask"))
+ return;
+
local_irq_save(flags);
WARN_ON(mask & ~cpumask_bits(cpu_online_mask)[0]);
__default_send_IPI_dest_field(mask, vector, apic->dest_logical);