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Commit 3605fb09 authored by Robin Getz's avatar Robin Getz Committed by Bryan Wu
Browse files

Blackfin arch: Add ability to count and display number of NMI interrupts 



Signed-off-by: default avatarRobin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: default avatarBryan Wu <cooloney@kernel.org>
parent 0be58939

arch/blackfin/include/asm/pda.h

+1 −0
Original line number Diff line number Diff line
@@ -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[];

arch/blackfin/kernel/irqchip.c

+7 −1
Original line number Diff line number Diff line
@@ -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;

}