[S390] ctc: add support for irq statistics

Add support for CTC 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>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/s390/net/ctcm_main.c b/drivers/s390/net/ctcm_main.c
index 2c7d2d9be4d..4c284598592 100644
--- a/drivers/s390/net/ctcm_main.c
+++ b/drivers/s390/net/ctcm_main.c
@@ -24,6 +24,7 @@
 #define KMSG_COMPONENT "ctcm"
 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
 
+#include <linux/kernel_stat.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
@@ -1204,6 +1205,7 @@ static void ctcm_irq_handler(struct ccw_device *cdev,
         int cstat;
         int dstat;
 
+        kstat_cpu(smp_processor_id()).irqs[IOINT_CTC]++;
         CTCM_DBF_TEXT_(TRACE, CTC_DBF_DEBUG,
                 "Enter %s(%s)", CTCM_FUNTAIL, dev_name(&cdev->dev));