[S390] dasd: add support for irq statistics
Add support for DASD 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 28cfe59..082ef0c 100644
--- a/arch/s390/include/asm/irq.h
+++ b/arch/s390/include/asm/irq.h
@@ -17,6 +17,7 @@
EXTINT_IUC,
IOINT_QAI,
IOINT_QDI,
+ IOINT_DAS,
NMI_NMI,
NR_IRQS,
};
diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c
index 61d8098..313fe83 100644
--- a/arch/s390/kernel/irq.c
+++ b/arch/s390/kernel/irq.c
@@ -34,6 +34,7 @@
{.name = "IUC", .desc = "[EXT] IUCV" },
{.name = "QAI", .desc = "[I/O] QDIO Adapter Interrupt" },
{.name = "QDI", .desc = "[I/O] QDIO Interrupt" },
+ {.name = "DAS", .desc = "[I/O] DASD" },
{.name = "NMI", .desc = "[NMI] Machine Check" },
};
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index fb613d7..faa7d42 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -11,6 +11,7 @@
#define KMSG_COMPONENT "dasd"
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
+#include <linux/kernel_stat.h>
#include <linux/kmod.h>
#include <linux/init.h>
#include <linux/interrupt.h>
@@ -1076,6 +1077,7 @@
unsigned long long now;
int expires;
+ kstat_cpu(smp_processor_id()).irqs[IOINT_DAS]++;
if (IS_ERR(irb)) {
switch (PTR_ERR(irb)) {
case -EIO: