And export the count to user space via /proc/interrupts.
Signed-off-by: Michael Cree <mcree@xxxxxxxxxxxx>
---
arch/alpha/include/asm/hw_irq.h | 1 +
arch/alpha/kernel/irq.c | 7 +++++--
2 files changed, 6 insertions(+), 2 deletions(-)
diff --git a/arch/alpha/include/asm/hw_irq.h b/arch/alpha/include/asm/hw_irq.h
index a37db0f..5050ac8 100644
--- a/arch/alpha/include/asm/hw_irq.h
+++ b/arch/alpha/include/asm/hw_irq.h
@@ -3,6 +3,7 @@
extern volatile unsigned long irq_err_count;
+DECLARE_PER_CPU(unsigned long, irq_pmi_count);
#ifdef CONFIG_ALPHA_GENERIC
#define ACTUAL_NR_IRQS alpha_mv.nr_irqs
diff --git a/arch/alpha/kernel/irq.c b/arch/alpha/kernel/irq.c
index 7f912ba..fe91298 100644
--- a/arch/alpha/kernel/irq.c
+++ b/arch/alpha/kernel/irq.c
@@ -31,6 +31,7 @@
#include <asm/uaccess.h>
volatile unsigned long irq_err_count;
+DEFINE_PER_CPU(unsigned long, irq_pmi_count);
void ack_bad_irq(unsigned int irq)
{
@@ -63,9 +64,7 @@ int irq_select_affinity(unsigned int irq)
int
show_interrupts(struct seq_file *p, void *v)
{
-#ifdef CONFIG_SMP
int j;
-#endif
int irq = *(loff_t *) v;
struct irqaction * action;
unsigned long flags;
@@ -112,6 +111,10 @@ unlock:
seq_printf(p, "%10lu ", cpu_data[j].ipi_count);
seq_putc(p, '\n');
#endif
+ seq_puts(p, "PMI: ");
+ for_each_online_cpu(j)
+ seq_printf(p, "%10lu ", per_cpu(irq_pmi_count, j));
+ seq_puts(p, " Performance Monitoring\n");
seq_printf(p, "ERR: %10lu\n", irq_err_count);
}
return 0;
--
1.7.0
--
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