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| author | Peter Oberparleiter <peter.oberparleiter@de.ibm.com> | 2011-10-30 15:16:04 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2011-10-30 15:16:15 +0100 |
| commit | de400d6b78d15a73023485f050bc6b1709dc7a79 (patch) | |
| tree | 2d2e7233a76982db4cf12ff0859054a33e46a911 /drivers/s390/cio/qdio_main.c | |
| parent | ce949717b559709423c1ef716a9db16d1dcadaed (diff) | |
| download | op-kernel-dev-de400d6b78d15a73023485f050bc6b1709dc7a79.zip op-kernel-dev-de400d6b78d15a73023485f050bc6b1709dc7a79.tar.gz | |
[S390] fix mismatch in summation of I/O IRQ statistics
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>
Diffstat (limited to 'drivers/s390/cio/qdio_main.c')
| -rw-r--r-- | drivers/s390/cio/qdio_main.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c index 6547ff4..7ded1b2 100644 --- a/drivers/s390/cio/qdio_main.c +++ b/drivers/s390/cio/qdio_main.c @@ -15,7 +15,6 @@ #include <linux/delay.h> #include <linux/gfp.h> #include <linux/io.h> -#include <linux/kernel_stat.h> #include <linux/atomic.h> #include <asm/debug.h> #include <asm/qdio.h> @@ -1128,7 +1127,6 @@ void qdio_int_handler(struct ccw_device *cdev, unsigned long intparm, return; } - kstat_cpu(smp_processor_id()).irqs[IOINT_QDI]++; if (irq_ptr->perf_stat_enabled) irq_ptr->perf_stat.qdio_int++; |
