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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>
This commit is contained in:
Robin Getz 2009-02-04 16:49:45 +08:00 committed by Bryan Wu
parent 0be5893914
commit 3605fb0965
2 changed files with 8 additions and 1 deletions
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1
arch/blackfin/include/asm/pda.h
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@ -59,6 +59,7 @@ struct blackfin_pda { /* Per-processor Data Area */
unsigned long icplb_fault_addr;
unsigned long retx;
unsigned long seqstat;
unsigned int __nmi_count; /* number of times NMI asserted on this CPU */
};
extern struct blackfin_pda cpu_pda[];

8
arch/blackfin/kernel/irqchip.c
View File

@ -35,6 +35,7 @@
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <asm/trace.h>
#include <asm/pda.h>
static atomic_t irq_err_count;
static spinlock_t irq_controller_lock;
@ -91,8 +92,13 @@ int show_interrupts(struct seq_file *p, void *v)
seq_putc(p, '\n');
skip:
spin_unlock_irqrestore(&irq_desc[i].lock, flags);
} else if (i == NR_IRQS)
} else if (i == NR_IRQS) {
seq_printf(p, "NMI: ");
for_each_online_cpu(j)
seq_printf(p, "%10u ", cpu_pda[j].__nmi_count);
seq_printf(p, " CORE Non Maskable Interrupt\n");
seq_printf(p, "Err: %10u\n", atomic_read(&irq_err_count));
}
return 0;
}