[S390] qdio: add qdio interrupts to interrupt statistics

Count traditional qdio interrupts and adapter interrupts for qdio
in the interrupt statistics.
Signed-off-by: NJan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>

arch/s390/include/asm/irq.h

@@ -15,6 +15,8 @@ enum interruption_class {
 	EXTINT_VRT,
 	EXTINT_SCP,
 	EXTINT_IUC,
+	IOINT_QAI,
+	IOINT_QDI,
 	NMI_NMI,
 	NR_IRQS,
 };

arch/s390/kernel/irq.c

@@ -32,6 +32,8 @@ static const struct irq_class intrclass_names[] = {
 	{.name = "VRT", .desc = "[EXT] Virtio" },
 	{.name = "SCP", .desc = "[EXT] Service Call" },
 	{.name = "IUC", .desc = "[EXT] IUCV" },
+	{.name = "QAI", .desc = "[I/O] QDIO Adapter Interrupt" },
+	{.name = "QDI", .desc = "[I/O] QDIO Interrupt" },
 	{.name = "NMI", .desc = "[NMI] Machine Check" },
 };
 

drivers/s390/cio/qdio_main.c

@@ -14,6 +14,7 @@
 #include <linux/timer.h>
 #include <linux/delay.h>
 #include <linux/gfp.h>
+#include <linux/kernel_stat.h>
 #include <asm/atomic.h>
 #include <asm/debug.h>
 #include <asm/qdio.h>
@@ -970,6 +971,7 @@ void qdio_int_handler(struct ccw_device *cdev, unsigned long intparm,
 		return;
 	}
 
+	kstat_cpu(smp_processor_id()).irqs[IOINT_QDI]++;
 	if (irq_ptr->perf_stat_enabled)
 		irq_ptr->perf_stat.qdio_int++;
 

drivers/s390/cio/qdio_thinint.c

@@ -8,6 +8,7 @@
  */
 #include <linux/io.h>
 #include <linux/slab.h>
+#include <linux/kernel_stat.h>
 #include <asm/atomic.h>
 #include <asm/debug.h>
 #include <asm/qdio.h>
@@ -127,6 +128,7 @@ static void tiqdio_thinint_handler(void *alsi, void *data)
 	struct qdio_q *q;
 
 	last_ai_time = S390_lowcore.int_clock;
+	kstat_cpu(smp_processor_id()).irqs[IOINT_QAI]++;
 
 	/*
 	 * SVS only when needed: issue SVS to benefit from iqdio interrupt