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authorSebastian Ott <sebott@linux.vnet.ibm.com>2011-10-30 18:16:54 +0400
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2011-10-30 18:16:44 +0400
commit65b4e403ac926f5196c2f28c4ec783d32dc322f0 (patch)
tree65db1f414961da1794ac7dfc452ea00fda9b6503 /drivers/s390/cio/chsc_sch.c
parentdad572e370138539ea45be9b53d168568e562565 (diff)
downloadlinux-65b4e403ac926f5196c2f28c4ec783d32dc322f0.tar.xz
[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>
Diffstat (limited to 'drivers/s390/cio/chsc_sch.c')
-rw-r--r--drivers/s390/cio/chsc_sch.c5
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",