[S390] 3215: add support for irq statistics

Add support for 3215 I/O interrupt statistics in /proc/interrupts.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

diff --git a/arch/s390/include/asm/irq.h b/arch/s390/include/asm/irq.h
index 082ef0c..d52533d 100644 (file)
--- a/arch/s390/include/asm/irq.h
+++ b/arch/s390/include/asm/irq.h
@@ -18,6 +18,7 @@ enum interruption_class {
        IOINT_QAI,
        IOINT_QDI,
        IOINT_DAS,
+       IOINT_C15,
        NMI_NMI,
        NR_IRQS,
 };

diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c
index 313fe83..e7914e4 100644 (file)
--- a/arch/s390/kernel/irq.c
+++ b/arch/s390/kernel/irq.c
@@ -35,6 +35,7 @@ static const struct irq_class intrclass_names[] = {
        {.name = "QAI", .desc = "[I/O] QDIO Adapter Interrupt" },
        {.name = "QDI", .desc = "[I/O] QDIO Interrupt" },
        {.name = "DAS", .desc = "[I/O] DASD" },
+       {.name = "C15", .desc = "[I/O] 3215" },
        {.name = "NMI", .desc = "[NMI] Machine Check" },
 };
 

diff --git a/drivers/s390/char/con3215.c b/drivers/s390/char/con3215.c
index 59ec073..3fb4335 100644 (file)
--- a/drivers/s390/char/con3215.c
+++ b/drivers/s390/char/con3215.c
@@ -9,6 +9,7 @@
  *           Dan Morrison, IBM Corporation <dmorriso@cse.buffalo.edu>
  */
 
+#include <linux/kernel_stat.h>
 #include <linux/module.h>
 #include <linux/types.h>
 #include <linux/kdev_t.h>
@@ -361,6 +362,7 @@ static void raw3215_irq(struct ccw_device *cdev, unsigned long intparm,
        int cstat, dstat;
        int count;
 
+       kstat_cpu(smp_processor_id()).irqs[IOINT_C15]++;
        raw = dev_get_drvdata(&cdev->dev);
        req = (struct raw3215_req *) intparm;
        cstat = irb->scsw.cmd.cstat;