Commit f48198d5 authored by Heiko Carstens's avatar Heiko Carstens Committed by Martin Schwidefsky
Browse files

[S390] vmur: add support for irq statistics 



Add support for VMUR I/O interrupt statistics in /proc/interrupts.

Signed-off-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent b8665172

arch/s390/include/asm/irq.h

+1 −0
Original line number Diff line number Diff line
@@ -21,6 +21,7 @@ enum interruption_class { 
	IOINT_C15,

	IOINT_C70,

	IOINT_TAP,

	IOINT_VMR,

	NMI_NMI,

	NR_IRQS,

};

arch/s390/kernel/irq.c

+1 −0
Original line number Diff line number Diff line
@@ -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" },

};

drivers/s390/char/vmur.c

+2 −0
Original line number Diff line number Diff line
@@ -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);