From b86651721f18f40319efe94ed3eac2d26682e5b9 Mon Sep 17 00:00:00 2001
From: Heiko Carstens <heiko.carstens@de.ibm.com>
Date: Wed, 5 Jan 2011 12:47:33 +0100
Subject: [S390] tape: add support for irq statistics

Add support for ccw based tape 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>
---
 drivers/s390/char/tape_core.c | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'drivers/s390/char')

diff --git a/drivers/s390/char/tape_core.c b/drivers/s390/char/tape_core.c
index b3a3e8e8656e..7978a0adeaf3 100644
--- a/drivers/s390/char/tape_core.c
+++ b/drivers/s390/char/tape_core.c
@@ -14,6 +14,7 @@
 #define KMSG_COMPONENT "tape"
 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
 
+#include <linux/kernel_stat.h>
 #include <linux/module.h>
 #include <linux/init.h>	     // for kernel parameters
 #include <linux/kmod.h>	     // for requesting modules
@@ -1114,6 +1115,7 @@ __tape_do_irq (struct ccw_device *cdev, unsigned long intparm, struct irb *irb)
 	struct tape_request *request;
 	int rc;
 
+	kstat_cpu(smp_processor_id()).irqs[IOINT_TAP]++;
 	device = dev_get_drvdata(&cdev->dev);
 	if (device == NULL) {
 		return;
-- 
cgit v1.2.3-59-g8ed1b