[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>

2 files changed, 2 insertions, 0 deletions

diff --git a/arch/s390/include/asm/irq.h b/arch/s390/include/asm/irq.h
index 1f686059f293..eadfa9fc03ba 100644
--- a/arch/s390/include/asm/irq.h
+++ b/arch/s390/include/asm/irq.h
@@ -28,6 +28,7 @@ enum interruption_class {
         IOINT_CLW,
         IOINT_CTC,
         IOINT_APB,
+        IOINT_CSC,
         NMI_NMI,
         NR_IRQS,
 };
diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c
index d382f9db3df5..30faaef34457 100644
--- a/arch/s390/kernel/irq.c
+++ b/arch/s390/kernel/irq.c
@@ -53,6 +53,7 @@ static const struct irq_class intrclass_names[] = {
         {.name = "CLW", .desc = "[I/O] CLAW" },
         {.name = "CTC", .desc = "[I/O] CTC" },
         {.name = "APB", .desc = "[I/O] AP Bus" },
+        {.name = "CSC", .desc = "[I/O] CHSC Subchannel" },
         {.name = "NMI", .desc = "[NMI] Machine Check" },
 };