[S390] claw: add support for irq statistics

Add support for CLAW 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>

3 files changed, 4 insertions, 0 deletions

diff --git a/arch/s390/include/asm/irq.h b/arch/s390/include/asm/irq.h
index 6a455b8ea18b..2d5943c1c6a1 100644
--- a/arch/s390/include/asm/irq.h
+++ b/arch/s390/include/asm/irq.h
@@ -23,6 +23,7 @@ enum interruption_class {
         IOINT_TAP,
         IOINT_VMR,
         IOINT_LCS,
+        IOINT_CLW,
         NMI_NMI,
         NR_IRQS,
 };
diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c
index 4c6e071b7f92..406b539f61a9 100644
--- a/arch/s390/kernel/irq.c
+++ b/arch/s390/kernel/irq.c
@@ -40,6 +40,7 @@ static const struct irq_class intrclass_names[] = {
         {.name = "TAP", .desc = "[I/O] Tape" },
         {.name = "VMR", .desc = "[I/O] Unit Record Devices" },
         {.name = "LCS", .desc = "[I/O] LCS" },
+        {.name = "CLW", .desc = "[I/O] CLAW" },
         {.name = "NMI", .desc = "[NMI] Machine Check" },
 };
 
diff --git a/drivers/s390/net/claw.c b/drivers/s390/net/claw.c
index 8e4153d740f3..ce3a5c13ce0b 100644
--- a/drivers/s390/net/claw.c
+++ b/drivers/s390/net/claw.c
@@ -63,6 +63,7 @@
 
 #define KMSG_COMPONENT "claw"
 
+#include <linux/kernel_stat.h>
 #include <asm/ccwdev.h>
 #include <asm/ccwgroup.h>
 #include <asm/debug.h>
@@ -640,6 +641,7 @@ claw_irq_handler(struct ccw_device *cdev,
         struct claw_env  *p_env;
         struct chbk *p_ch_r=NULL;
 
+        kstat_cpu(smp_processor_id()).irqs[IOINT_CLW]++;
         CLAW_DBF_TEXT(4, trace, "clawirq");
         /* Bypass all 'unsolicited interrupts' */
         privptr = dev_get_drvdata(&cdev->dev);