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Commit 2e73c2cf authored by Sebastian Ott's avatar Sebastian Ott Committed by Martin Schwidefsky
Browse files

s390/eadm_sch: add support for irq statistics 



Add support for EADM interrupt statistics in /proc/interrupts.

Signed-off-by: default avatarSebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent eadb86ab

arch/s390/include/asm/irq.h

+1 −0
Original line number Diff line number Diff line
@@ -30,6 +30,7 @@ enum interruption_class { 
	IOINT_CLW,

	IOINT_CTC,

	IOINT_APB,

	IOINT_ADM,

	IOINT_CSC,

	NMI_NMI,

	NR_IRQS,

arch/s390/kernel/irq.c

+1 −0
Original line number Diff line number Diff line
@@ -55,6 +55,7 @@ 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 = "ADM", .desc = "[I/O] EADM Subchannel" },

	{.name = "CSC", .desc = "[I/O] CHSC Subchannel" },

	{.name = "NMI", .desc = "[NMI] Machine Check" },

};

drivers/s390/cio/eadm_sch.c

+3 −0
Original line number Diff line number Diff line
@@ -5,6 +5,7 @@ 
 * Author(s): Sebastian Ott <sebott@linux.vnet.ibm.com>

 */



#include <linux/kernel_stat.h>

#include <linux/workqueue.h>

#include <linux/spinlock.h>

#include <linux/device.h>
@@ -138,6 +139,8 @@ static void eadm_subchannel_irq(struct subchannel *sch) 
	EADM_LOG(6, "irq");

	EADM_LOG_HEX(6, irb, sizeof(*irb));



	kstat_cpu(smp_processor_id()).irqs[IOINT_ADM]++;



	if ((scsw->stctl & (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND))

	    && scsw->eswf == 1 && irb->esw.eadm.erw.r)

		error = -EIO;