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[S390] lcs: add support for irq statistics 

Add support for LCS 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>
This commit is contained in:
Heiko Carstens 2011-01-05 12:47:35 +01:00 committed by Martin Schwidefsky
parent f48198d592
commit 096a61682e
3 changed files with 4 additions and 0 deletions
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1
arch/s390/include/asm/irq.h
View File

@ -22,6 +22,7 @@ enum interruption_class {
IOINT_C70, IOINT_C70,
IOINT_TAP, IOINT_TAP,
IOINT_VMR, IOINT_VMR,
IOINT_LCS,
NMI_NMI, NMI_NMI,
NR_IRQS, NR_IRQS,
}; };

1
arch/s390/kernel/irq.c
View File

@ -39,6 +39,7 @@ static const struct irq_class intrclass_names[] = {
{.name = "C70", .desc = "[I/O] 3270" }, {.name = "C70", .desc = "[I/O] 3270" },
{.name = "TAP", .desc = "[I/O] Tape" }, {.name = "TAP", .desc = "[I/O] Tape" },
{.name = "VMR", .desc = "[I/O] Unit Record Devices" }, {.name = "VMR", .desc = "[I/O] Unit Record Devices" },
{.name = "LCS", .desc = "[I/O] LCS" },
{.name = "NMI", .desc = "[NMI] Machine Check" }, {.name = "NMI", .desc = "[NMI] Machine Check" },
}; };

2
drivers/s390/net/lcs.c
View File

@ -26,6 +26,7 @@
#define KMSG_COMPONENT "lcs" #define KMSG_COMPONENT "lcs"
#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
#include <linux/kernel_stat.h>
#include <linux/module.h> #include <linux/module.h>
#include <linux/if.h> #include <linux/if.h>
#include <linux/netdevice.h> #include <linux/netdevice.h>
@ -1396,6 +1397,7 @@ lcs_irq(struct ccw_device *cdev, unsigned long intparm, struct irb *irb)
int rc, index; int rc, index;
int cstat, dstat; int cstat, dstat;
kstat_cpu(smp_processor_id()).irqs[IOINT_LCS]++;
if (lcs_check_irb_error(cdev, irb)) if (lcs_check_irb_error(cdev, irb))
return; return;