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[S390] fix mismatch in summation of I/O IRQ statistics

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Current IRQ statistics support does not show detail counts for I/O
interrupts which are processed internally only. The result is a
summation count which is way off such as this one:

           CPU0       CPU1       CPU2
I/O:       1331        710        442
[...]
QAI:         15         16         16   [I/O] QDIO Adapter Interrupt
QDI:          1          0          0   [I/O] QDIO Interrupt
DAS:        706        645        381   [I/O] DASD
C15:         26         10          0   [I/O] 3215
C70:          0          0          0   [I/O] 3270
TAP:          0          0          0   [I/O] Tape
VMR:          0          0          0   [I/O] Unit Record Devices
LCS:          0          0          0   [I/O] LCS
CLW:          0          0          0   [I/O] CLAW
CTC:          0          0          0   [I/O] CTC
APB:          0          0          0   [I/O] AP Bus

Fix this by moving I/O interrupt accounting into the common I/O layer.

Signed-off-by: Peter Oberparleiter <peter.oberparleiter@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Peter Oberparleiter
2011-10-30 15:16:04 +01:00
committed by Martin Schwidefsky
parent ce949717b5
commit de400d6b78
20 changed files with 56 additions and 24 deletions
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2
drivers/s390/cio/io_sch.h
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@@ -4,6 +4,7 @@
#include <linux/types.h>
#include <asm/schid.h>
#include <asm/ccwdev.h>
#include <asm/irq.h>
#include "css.h"
#include "orb.h"
@@ -157,6 +158,7 @@ struct ccw_device_private {
struct list_head cmb_list; /* list of measured devices */
u64 cmb_start_time; /* clock value of cmb reset */
void *cmb_wait; /* deferred cmb enable/disable */
enum interruption_class int_class;
};
static inline int rsch(struct subchannel_id schid)