[S390] chsc_sch: add support for irq statistics

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

Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/s390/cio/chsc_sch.c b/drivers/s390/cio/chsc_sch.c
index e950f1ad4dd1..0c87b0fc7714 100644
--- a/drivers/s390/cio/chsc_sch.c
+++ b/drivers/s390/cio/chsc_sch.c
@@ -1,7 +1,7 @@
 /*
  * Driver for s390 chsc subchannels
  *
- * Copyright IBM Corp. 2008, 2009
+ * Copyright IBM Corp. 2008, 2011
  *
  * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com>
  *
@@ -12,6 +12,7 @@
 #include <linux/module.h>
 #include <linux/uaccess.h>
 #include <linux/miscdevice.h>
+#include <linux/kernel_stat.h>
 
 #include <asm/compat.h>
 #include <asm/cio.h>
@@ -56,6 +57,8 @@ static void chsc_subchannel_irq(struct subchannel *sch)
 
         CHSC_LOG(4, "irb");
         CHSC_LOG_HEX(4, irb, sizeof(*irb));
+        kstat_cpu(smp_processor_id()).irqs[IOINT_CSC]++;
+
         /* Copy irb to provided request and set done. */
         if (!request) {
                 CHSC_MSG(0, "Interrupt on sch 0.%x.%04x with no request\n",