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[S390] vmur: add support for irq statistics 

Add support for VMUR 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>
hifive-unleashed-5.1
Heiko Carstens 2011-01-05 12:47:34 +01:00 committed by Martin Schwidefsky
parent b86651721f
commit f48198d592
3 changed files with 4 additions and 0 deletions
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1
arch/s390/include/asm/irq.h
View File

@ -21,6 +21,7 @@ enum interruption_class {
IOINT_C15,
IOINT_C70,
IOINT_TAP,
IOINT_VMR,
NMI_NMI,
NR_IRQS,
};

1
arch/s390/kernel/irq.c
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@ -38,6 +38,7 @@ static const struct irq_class intrclass_names[] = {
{.name = "C15", .desc = "[I/O] 3215" },
{.name = "C70", .desc = "[I/O] 3270" },
{.name = "TAP", .desc = "[I/O] Tape" },
{.name = "VMR", .desc = "[I/O] Unit Record Devices" },
{.name = "NMI", .desc = "[NMI] Machine Check" },
};

2
drivers/s390/char/vmur.c
View File

@ -11,6 +11,7 @@
#define KMSG_COMPONENT "vmur"
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
#include <linux/kernel_stat.h>
#include <linux/cdev.h>
#include <linux/slab.h>
@ -302,6 +303,7 @@ static void ur_int_handler(struct ccw_device *cdev, unsigned long intparm,
{
struct urdev *urd;
kstat_cpu(smp_processor_id()).irqs[IOINT_VMR]++;
TRACE("ur_int_handler: intparm=0x%lx cstat=%02x dstat=%02x res=%u\n",
intparm, irb->scsw.cmd.cstat, irb->scsw.cmd.dstat,
irb->scsw.cmd.count);