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Blackfin arch: Add ability to count and display number of NMI interrupts
Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org> Signed-off-by: Bryan Wu <cooloney@kernel.org>
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@ -59,6 +59,7 @@ struct blackfin_pda { /* Per-processor Data Area */
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unsigned long icplb_fault_addr;
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unsigned long retx;
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unsigned long seqstat;
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unsigned int __nmi_count; /* number of times NMI asserted on this CPU */
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};
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extern struct blackfin_pda cpu_pda[];
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@ -35,6 +35,7 @@
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#include <linux/interrupt.h>
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#include <linux/irq.h>
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#include <asm/trace.h>
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#include <asm/pda.h>
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static atomic_t irq_err_count;
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static spinlock_t irq_controller_lock;
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@ -91,8 +92,13 @@ int show_interrupts(struct seq_file *p, void *v)
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seq_putc(p, '\n');
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skip:
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spin_unlock_irqrestore(&irq_desc[i].lock, flags);
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} else if (i == NR_IRQS)
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} else if (i == NR_IRQS) {
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seq_printf(p, "NMI: ");
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for_each_online_cpu(j)
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seq_printf(p, "%10u ", cpu_pda[j].__nmi_count);
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seq_printf(p, " CORE Non Maskable Interrupt\n");
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seq_printf(p, "Err: %10u\n", atomic_read(&irq_err_count));
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}
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return 0;
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}
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