x86: add debug info for 32bit sparse_irq

so could figure out bugs where we get an interrupt, but vector_irq is
not initialized yet.

Signed-off-by: Yinghai Lu  <yhlu.kernel@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 2 insertions, 2 deletions

diff --git a/arch/x86/kernel/irq_32.c b/arch/x86/kernel/irq_32.c
index b51ffdcfa31a..cc929f2f84f1 100644
--- a/arch/x86/kernel/irq_32.c
+++ b/arch/x86/kernel/irq_32.c
@@ -237,8 +237,8 @@ unsigned int do_IRQ(struct pt_regs *regs)
 
         desc = irq_to_desc(irq);
         if (unlikely(!desc)) {
-                printk(KERN_EMERG "%s: cannot handle IRQ %d vector %#x\n",
-                                        __func__, irq, vector);
+                printk(KERN_EMERG "%s: cannot handle IRQ %d vector %#x cpu %d\n",
+                                        __func__, irq, vector, smp_processor_id());
                 BUG();
         }